ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
   8import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
   9
  10import android.Manifest;
  11import android.annotation.SuppressLint;
  12import android.app.Activity;
  13import android.app.Fragment;
  14import android.app.FragmentManager;
  15import android.app.PendingIntent;
  16import android.content.ActivityNotFoundException;
  17import android.content.Context;
  18import android.content.DialogInterface;
  19import android.content.Intent;
  20import android.content.IntentSender.SendIntentException;
  21import android.content.SharedPreferences;
  22import android.content.pm.PackageManager;
  23import android.net.Uri;
  24import android.os.Build;
  25import android.os.Bundle;
  26import android.os.Handler;
  27import android.os.SystemClock;
  28import android.preference.PreferenceManager;
  29import android.provider.MediaStore;
  30import android.text.Editable;
  31import android.text.TextUtils;
  32import android.util.Log;
  33import android.view.ContextMenu;
  34import android.view.ContextMenu.ContextMenuInfo;
  35import android.view.Gravity;
  36import android.view.LayoutInflater;
  37import android.view.Menu;
  38import android.view.MenuInflater;
  39import android.view.MenuItem;
  40import android.view.MotionEvent;
  41import android.view.View;
  42import android.view.View.OnClickListener;
  43import android.view.ViewGroup;
  44import android.view.inputmethod.EditorInfo;
  45import android.view.inputmethod.InputMethodManager;
  46import android.widget.AbsListView;
  47import android.widget.AbsListView.OnScrollListener;
  48import android.widget.AdapterView;
  49import android.widget.AdapterView.AdapterContextMenuInfo;
  50import android.widget.CheckBox;
  51import android.widget.ListView;
  52import android.widget.PopupMenu;
  53import android.widget.TextView.OnEditorActionListener;
  54import android.widget.Toast;
  55
  56import androidx.annotation.IdRes;
  57import androidx.annotation.NonNull;
  58import androidx.annotation.Nullable;
  59import androidx.annotation.StringRes;
  60import androidx.appcompat.app.AlertDialog;
  61import androidx.core.view.inputmethod.InputConnectionCompat;
  62import androidx.core.view.inputmethod.InputContentInfoCompat;
  63import androidx.databinding.DataBindingUtil;
  64import androidx.viewpager.widget.PagerAdapter;
  65import androidx.viewpager.widget.ViewPager;
  66
  67import com.cheogram.android.BobTransfer;
  68
  69import com.google.common.base.Optional;
  70import com.google.common.collect.ImmutableList;
  71
  72import org.jetbrains.annotations.NotNull;
  73
  74import java.net.URISyntaxException;
  75import java.util.ArrayList;
  76import java.util.Arrays;
  77import java.util.Collection;
  78import java.util.Collections;
  79import java.util.HashSet;
  80import java.util.Iterator;
  81import java.util.List;
  82import java.util.Map;
  83import java.util.Set;
  84import java.util.UUID;
  85import java.util.concurrent.atomic.AtomicBoolean;
  86
  87import eu.siacs.conversations.Config;
  88import eu.siacs.conversations.R;
  89import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  90import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  91import eu.siacs.conversations.databinding.FragmentConversationBinding;
  92import eu.siacs.conversations.entities.Account;
  93import eu.siacs.conversations.entities.Blockable;
  94import eu.siacs.conversations.entities.Contact;
  95import eu.siacs.conversations.entities.Conversation;
  96import eu.siacs.conversations.entities.Conversational;
  97import eu.siacs.conversations.entities.DownloadableFile;
  98import eu.siacs.conversations.entities.Message;
  99import eu.siacs.conversations.entities.MucOptions;
 100import eu.siacs.conversations.entities.MucOptions.User;
 101import eu.siacs.conversations.entities.Presence;
 102import eu.siacs.conversations.entities.Presences;
 103import eu.siacs.conversations.entities.ReadByMarker;
 104import eu.siacs.conversations.entities.Transferable;
 105import eu.siacs.conversations.entities.TransferablePlaceholder;
 106import eu.siacs.conversations.http.HttpDownloadConnection;
 107import eu.siacs.conversations.persistance.FileBackend;
 108import eu.siacs.conversations.services.MessageArchiveService;
 109import eu.siacs.conversations.services.QuickConversationsService;
 110import eu.siacs.conversations.services.XmppConnectionService;
 111import eu.siacs.conversations.ui.adapter.CommandAdapter;
 112import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
 113import eu.siacs.conversations.ui.adapter.MessageAdapter;
 114import eu.siacs.conversations.ui.util.ActivityResult;
 115import eu.siacs.conversations.ui.util.Attachment;
 116import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
 117import eu.siacs.conversations.ui.util.DateSeparator;
 118import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 119import eu.siacs.conversations.ui.util.ListViewUtils;
 120import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 121import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 122import eu.siacs.conversations.ui.util.PendingItem;
 123import eu.siacs.conversations.ui.util.PresenceSelector;
 124import eu.siacs.conversations.ui.util.ScrollState;
 125import eu.siacs.conversations.ui.util.SendButtonAction;
 126import eu.siacs.conversations.ui.util.SendButtonTool;
 127import eu.siacs.conversations.ui.util.ShareUtil;
 128import eu.siacs.conversations.ui.util.ViewUtil;
 129import eu.siacs.conversations.ui.widget.EditMessage;
 130import eu.siacs.conversations.utils.AccountUtils;
 131import eu.siacs.conversations.utils.Compatibility;
 132import eu.siacs.conversations.utils.GeoHelper;
 133import eu.siacs.conversations.utils.MessageUtils;
 134import eu.siacs.conversations.utils.NickValidityChecker;
 135import eu.siacs.conversations.utils.Patterns;
 136import eu.siacs.conversations.utils.PermissionUtils;
 137import eu.siacs.conversations.utils.QuickLoader;
 138import eu.siacs.conversations.utils.StylingHelper;
 139import eu.siacs.conversations.utils.TimeFrameUtils;
 140import eu.siacs.conversations.utils.UIHelper;
 141import eu.siacs.conversations.xml.Element;
 142import eu.siacs.conversations.xml.Namespace;
 143import eu.siacs.conversations.xmpp.Jid;
 144import eu.siacs.conversations.xmpp.XmppConnection;
 145import eu.siacs.conversations.xmpp.chatstate.ChatState;
 146import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 147import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 148import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 149import eu.siacs.conversations.xmpp.jingle.Media;
 150import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 151import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 152import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 153
 154public class ConversationFragment extends XmppFragment
 155        implements EditMessage.KeyboardListener,
 156                MessageAdapter.OnContactPictureLongClicked,
 157                MessageAdapter.OnContactPictureClicked {
 158
 159    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 160    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 161    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 162    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 163    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 164    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 165    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 166    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 167    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 168    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 169    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 170    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 171    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 172    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 173    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 174    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 175    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 176
 177    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 178    public static final String STATE_CONVERSATION_UUID =
 179            ConversationFragment.class.getName() + ".uuid";
 180    public static final String STATE_SCROLL_POSITION =
 181            ConversationFragment.class.getName() + ".scroll_position";
 182    public static final String STATE_PHOTO_URI =
 183            ConversationFragment.class.getName() + ".media_previews";
 184    public static final String STATE_MEDIA_PREVIEWS =
 185            ConversationFragment.class.getName() + ".take_photo_uri";
 186    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 187
 188    private final List<Message> messageList = new ArrayList<>();
 189    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 190    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 191    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 192    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 193    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 194    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 195    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 196    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 197    public Uri mPendingEditorContent = null;
 198    protected MessageAdapter messageListAdapter;
 199    protected CommandAdapter commandAdapter;
 200    private MediaPreviewAdapter mediaPreviewAdapter;
 201    private String lastMessageUuid = null;
 202    private Conversation conversation;
 203    private FragmentConversationBinding binding;
 204    private Toast messageLoaderToast;
 205    private ConversationsActivity activity;
 206    private boolean reInitRequiredOnStart = true;
 207    private final OnClickListener clickToMuc =
 208            new OnClickListener() {
 209
 210                @Override
 211                public void onClick(View v) {
 212                    ConferenceDetailsActivity.open(getActivity(), conversation);
 213                }
 214            };
 215    private final OnClickListener leaveMuc =
 216            new OnClickListener() {
 217
 218                @Override
 219                public void onClick(View v) {
 220                    activity.xmppConnectionService.archiveConversation(conversation);
 221                }
 222            };
 223    private final OnClickListener joinMuc =
 224            new OnClickListener() {
 225
 226                @Override
 227                public void onClick(View v) {
 228                    activity.xmppConnectionService.joinMuc(conversation);
 229                }
 230            };
 231
 232    private final OnClickListener acceptJoin =
 233            new OnClickListener() {
 234                @Override
 235                public void onClick(View v) {
 236                    conversation.setAttribute("accept_non_anonymous", true);
 237                    activity.xmppConnectionService.updateConversation(conversation);
 238                    activity.xmppConnectionService.joinMuc(conversation);
 239                }
 240            };
 241
 242    private final OnClickListener enterPassword =
 243            new OnClickListener() {
 244
 245                @Override
 246                public void onClick(View v) {
 247                    MucOptions muc = conversation.getMucOptions();
 248                    String password = muc.getPassword();
 249                    if (password == null) {
 250                        password = "";
 251                    }
 252                    activity.quickPasswordEdit(
 253                            password,
 254                            value -> {
 255                                activity.xmppConnectionService.providePasswordForMuc(
 256                                        conversation, value);
 257                                return null;
 258                            });
 259                }
 260            };
 261    private final OnScrollListener mOnScrollListener =
 262            new OnScrollListener() {
 263
 264                @Override
 265                public void onScrollStateChanged(AbsListView view, int scrollState) {
 266                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 267                        updateThreadFromLastMessage();
 268                        fireReadEvent();
 269                    }
 270                }
 271
 272                @Override
 273                public void onScroll(
 274                        final AbsListView view,
 275                        int firstVisibleItem,
 276                        int visibleItemCount,
 277                        int totalItemCount) {
 278                    toggleScrollDownButton(view);
 279                    synchronized (ConversationFragment.this.messageList) {
 280                        if (firstVisibleItem < 5
 281                                && conversation != null
 282                                && conversation.messagesLoaded.compareAndSet(true, false)
 283                                && messageList.size() > 0) {
 284                            long timestamp;
 285                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 286                                    && messageList.size() >= 2) {
 287                                timestamp = messageList.get(1).getTimeSent();
 288                            } else {
 289                                timestamp = messageList.get(0).getTimeSent();
 290                            }
 291                            activity.xmppConnectionService.loadMoreMessages(
 292                                    conversation,
 293                                    timestamp,
 294                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 295                                        @Override
 296                                        public void onMoreMessagesLoaded(
 297                                                final int c, final Conversation conversation) {
 298                                            if (ConversationFragment.this.conversation
 299                                                    != conversation) {
 300                                                conversation.messagesLoaded.set(true);
 301                                                return;
 302                                            }
 303                                            runOnUiThread(
 304                                                    () -> {
 305                                                        synchronized (messageList) {
 306                                                            final int oldPosition =
 307                                                                    binding.messagesView
 308                                                                            .getFirstVisiblePosition();
 309                                                            Message message = null;
 310                                                            int childPos;
 311                                                            for (childPos = 0;
 312                                                                    childPos + oldPosition
 313                                                                            < messageList.size();
 314                                                                    ++childPos) {
 315                                                                message =
 316                                                                        messageList.get(
 317                                                                                oldPosition
 318                                                                                        + childPos);
 319                                                                if (message.getType()
 320                                                                        != Message.TYPE_STATUS) {
 321                                                                    break;
 322                                                                }
 323                                                            }
 324                                                            final String uuid =
 325                                                                    message != null
 326                                                                            ? message.getUuid()
 327                                                                            : null;
 328                                                            View v =
 329                                                                    binding.messagesView.getChildAt(
 330                                                                            childPos);
 331                                                            final int pxOffset =
 332                                                                    (v == null) ? 0 : v.getTop();
 333                                                            ConversationFragment.this.conversation
 334                                                                    .populateWithMessages(
 335                                                                            ConversationFragment
 336                                                                                    .this
 337                                                                                    .messageList);
 338                                                            try {
 339                                                                updateStatusMessages();
 340                                                            } catch (IllegalStateException e) {
 341                                                                Log.d(
 342                                                                        Config.LOGTAG,
 343                                                                        "caught illegal state exception while updating status messages");
 344                                                            }
 345                                                            messageListAdapter
 346                                                                    .notifyDataSetChanged();
 347                                                            int pos =
 348                                                                    Math.max(
 349                                                                            getIndexOf(
 350                                                                                    uuid,
 351                                                                                    messageList),
 352                                                                            0);
 353                                                            binding.messagesView
 354                                                                    .setSelectionFromTop(
 355                                                                            pos, pxOffset);
 356                                                            if (messageLoaderToast != null) {
 357                                                                messageLoaderToast.cancel();
 358                                                            }
 359                                                            conversation.messagesLoaded.set(true);
 360                                                        }
 361                                                    });
 362                                        }
 363
 364                                        @Override
 365                                        public void informUser(final int resId) {
 366
 367                                            runOnUiThread(
 368                                                    () -> {
 369                                                        if (messageLoaderToast != null) {
 370                                                            messageLoaderToast.cancel();
 371                                                        }
 372                                                        if (ConversationFragment.this.conversation
 373                                                                != conversation) {
 374                                                            return;
 375                                                        }
 376                                                        messageLoaderToast =
 377                                                                Toast.makeText(
 378                                                                        view.getContext(),
 379                                                                        resId,
 380                                                                        Toast.LENGTH_LONG);
 381                                                        messageLoaderToast.show();
 382                                                    });
 383                                        }
 384                                    });
 385                        }
 386                    }
 387                }
 388            };
 389    private final EditMessage.OnCommitContentListener mEditorContentListener =
 390            new EditMessage.OnCommitContentListener() {
 391                @Override
 392                public boolean onCommitContent(
 393                        InputContentInfoCompat inputContentInfo,
 394                        int flags,
 395                        Bundle opts,
 396                        String[] contentMimeTypes) {
 397                    // try to get permission to read the image, if applicable
 398                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 399                            != 0) {
 400                        try {
 401                            inputContentInfo.requestPermission();
 402                        } catch (Exception e) {
 403                            Log.e(
 404                                    Config.LOGTAG,
 405                                    "InputContentInfoCompat#requestPermission() failed.",
 406                                    e);
 407                            Toast.makeText(
 408                                            getActivity(),
 409                                            activity.getString(
 410                                                    R.string.no_permission_to_access_x,
 411                                                    inputContentInfo.getDescription()),
 412                                            Toast.LENGTH_LONG)
 413                                    .show();
 414                            return false;
 415                        }
 416                    }
 417                    if (hasPermissions(
 418                            REQUEST_ADD_EDITOR_CONTENT,
 419                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 420                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 421                    } else {
 422                        mPendingEditorContent = inputContentInfo.getContentUri();
 423                    }
 424                    return true;
 425                }
 426            };
 427    private Message selectedMessage;
 428    private final OnClickListener mEnableAccountListener =
 429            new OnClickListener() {
 430                @Override
 431                public void onClick(View v) {
 432                    final Account account = conversation == null ? null : conversation.getAccount();
 433                    if (account != null) {
 434                        account.setOption(Account.OPTION_DISABLED, false);
 435                        activity.xmppConnectionService.updateAccount(account);
 436                    }
 437                }
 438            };
 439    private final OnClickListener mUnblockClickListener =
 440            new OnClickListener() {
 441                @Override
 442                public void onClick(final View v) {
 443                    v.post(() -> v.setVisibility(View.INVISIBLE));
 444                    if (conversation.isDomainBlocked()) {
 445                        BlockContactDialog.show(activity, conversation);
 446                    } else {
 447                        unblockConversation(conversation);
 448                    }
 449                }
 450            };
 451    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 452    private final OnClickListener mAddBackClickListener =
 453            new OnClickListener() {
 454
 455                @Override
 456                public void onClick(View v) {
 457                    final Contact contact = conversation == null ? null : conversation.getContact();
 458                    if (contact != null) {
 459                        activity.xmppConnectionService.createContact(contact, true);
 460                        activity.switchToContactDetails(contact);
 461                    }
 462                }
 463            };
 464    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 465    private final OnClickListener mAllowPresenceSubscription =
 466            new OnClickListener() {
 467                @Override
 468                public void onClick(View v) {
 469                    final Contact contact = conversation == null ? null : conversation.getContact();
 470                    if (contact != null) {
 471                        activity.xmppConnectionService.sendPresencePacket(
 472                                contact.getAccount(),
 473                                activity.xmppConnectionService
 474                                        .getPresenceGenerator()
 475                                        .sendPresenceUpdatesTo(contact));
 476                        hideSnackbar();
 477                    }
 478                }
 479            };
 480    protected OnClickListener clickToDecryptListener =
 481            new OnClickListener() {
 482
 483                @Override
 484                public void onClick(View v) {
 485                    PendingIntent pendingIntent =
 486                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 487                    if (pendingIntent != null) {
 488                        try {
 489                            getActivity()
 490                                    .startIntentSenderForResult(
 491                                            pendingIntent.getIntentSender(),
 492                                            REQUEST_DECRYPT_PGP,
 493                                            null,
 494                                            0,
 495                                            0,
 496                                            0);
 497                        } catch (SendIntentException e) {
 498                            Toast.makeText(
 499                                            getActivity(),
 500                                            R.string.unable_to_connect_to_keychain,
 501                                            Toast.LENGTH_SHORT)
 502                                    .show();
 503                            conversation
 504                                    .getAccount()
 505                                    .getPgpDecryptionService()
 506                                    .continueDecryption(true);
 507                        }
 508                    }
 509                    updateSnackBar(conversation);
 510                }
 511            };
 512    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 513    private final OnEditorActionListener mEditorActionListener =
 514            (v, actionId, event) -> {
 515                if (actionId == EditorInfo.IME_ACTION_SEND) {
 516                    InputMethodManager imm =
 517                            (InputMethodManager)
 518                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 519                    if (imm != null && imm.isFullscreenMode()) {
 520                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 521                    }
 522                    sendMessage();
 523                    return true;
 524                } else {
 525                    return false;
 526                }
 527            };
 528    private final OnClickListener mScrollButtonListener =
 529            new OnClickListener() {
 530
 531                @Override
 532                public void onClick(View v) {
 533                    stopScrolling();
 534                    setSelection(binding.messagesView.getCount() - 1, true);
 535                }
 536            };
 537    private final OnClickListener mSendButtonListener =
 538            new OnClickListener() {
 539
 540                @Override
 541                public void onClick(View v) {
 542                    Object tag = v.getTag();
 543                    if (tag instanceof SendButtonAction) {
 544                        SendButtonAction action = (SendButtonAction) tag;
 545                        switch (action) {
 546                            case TAKE_PHOTO:
 547                            case RECORD_VIDEO:
 548                            case SEND_LOCATION:
 549                            case RECORD_VOICE:
 550                            case CHOOSE_PICTURE:
 551                                attachFile(action.toChoice());
 552                                break;
 553                            case CANCEL:
 554                                if (conversation != null) {
 555                                    if (conversation.setCorrectingMessage(null)) {
 556                                        binding.textinput.setText("");
 557                                        binding.textinput.append(conversation.getDraftMessage());
 558                                        conversation.setDraftMessage(null);
 559                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 560                                        conversation.setNextCounterpart(null);
 561                                        binding.textinput.setText("");
 562                                    } else {
 563                                        binding.textinput.setText("");
 564                                    }
 565                                    updateChatMsgHint();
 566                                    updateSendButton();
 567                                    updateEditablity();
 568                                }
 569                                break;
 570                            default:
 571                                sendMessage();
 572                        }
 573                    } else {
 574                        sendMessage();
 575                    }
 576                }
 577            };
 578    private int completionIndex = 0;
 579    private int lastCompletionLength = 0;
 580    private String incomplete;
 581    private int lastCompletionCursor;
 582    private boolean firstWord = false;
 583    private Message mPendingDownloadableMessage;
 584
 585    private static ConversationFragment findConversationFragment(Activity activity) {
 586        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 587        if (fragment instanceof ConversationFragment) {
 588            return (ConversationFragment) fragment;
 589        }
 590        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 591        if (fragment instanceof ConversationFragment) {
 592            return (ConversationFragment) fragment;
 593        }
 594        return null;
 595    }
 596
 597    public static void startStopPending(Activity activity) {
 598        ConversationFragment fragment = findConversationFragment(activity);
 599        if (fragment != null) {
 600            fragment.messageListAdapter.startStopPending();
 601        }
 602    }
 603
 604    public static void downloadFile(Activity activity, Message message) {
 605        ConversationFragment fragment = findConversationFragment(activity);
 606        if (fragment != null) {
 607            fragment.startDownloadable(message);
 608        }
 609    }
 610
 611    public static void registerPendingMessage(Activity activity, Message message) {
 612        ConversationFragment fragment = findConversationFragment(activity);
 613        if (fragment != null) {
 614            fragment.pendingMessage.push(message);
 615        }
 616    }
 617
 618    public static void openPendingMessage(Activity activity) {
 619        ConversationFragment fragment = findConversationFragment(activity);
 620        if (fragment != null) {
 621            Message message = fragment.pendingMessage.pop();
 622            if (message != null) {
 623                fragment.messageListAdapter.openDownloadable(message);
 624            }
 625        }
 626    }
 627
 628    public static Conversation getConversation(Activity activity) {
 629        return getConversation(activity, R.id.secondary_fragment);
 630    }
 631
 632    private static Conversation getConversation(Activity activity, @IdRes int res) {
 633        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 634        if (fragment instanceof ConversationFragment) {
 635            return ((ConversationFragment) fragment).getConversation();
 636        } else {
 637            return null;
 638        }
 639    }
 640
 641    public static ConversationFragment get(Activity activity) {
 642        FragmentManager fragmentManager = activity.getFragmentManager();
 643        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 644        if (fragment instanceof ConversationFragment) {
 645            return (ConversationFragment) fragment;
 646        } else {
 647            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 648            return fragment instanceof ConversationFragment
 649                    ? (ConversationFragment) fragment
 650                    : null;
 651        }
 652    }
 653
 654    public static Conversation getConversationReliable(Activity activity) {
 655        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 656        if (conversation != null) {
 657            return conversation;
 658        }
 659        return getConversation(activity, R.id.main_fragment);
 660    }
 661
 662    private static boolean scrolledToBottom(AbsListView listView) {
 663        final int count = listView.getCount();
 664        if (count == 0) {
 665            return true;
 666        } else if (listView.getLastVisiblePosition() == count - 1) {
 667            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 668            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 669        } else {
 670            return false;
 671        }
 672    }
 673
 674    private void toggleScrollDownButton() {
 675        toggleScrollDownButton(binding.messagesView);
 676    }
 677
 678    private void toggleScrollDownButton(AbsListView listView) {
 679        if (conversation == null) {
 680            return;
 681        }
 682        if (scrolledToBottom(listView)) {
 683            lastMessageUuid = null;
 684            hideUnreadMessagesCount();
 685        } else {
 686            binding.scrollToBottomButton.setEnabled(true);
 687            binding.scrollToBottomButton.show();
 688            if (lastMessageUuid == null) {
 689                lastMessageUuid = conversation.getLatestMessage().getUuid();
 690            }
 691            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 692                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 693            }
 694        }
 695    }
 696
 697    private int getIndexOf(String uuid, List<Message> messages) {
 698        if (uuid == null) {
 699            return messages.size() - 1;
 700        }
 701        for (int i = 0; i < messages.size(); ++i) {
 702            if (uuid.equals(messages.get(i).getUuid())) {
 703                return i;
 704            } else {
 705                Message next = messages.get(i);
 706                while (next != null && next.wasMergedIntoPrevious()) {
 707                    if (uuid.equals(next.getUuid())) {
 708                        return i;
 709                    }
 710                    next = next.next();
 711                }
 712            }
 713        }
 714        return -1;
 715    }
 716
 717    private ScrollState getScrollPosition() {
 718        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 719        if (listView == null
 720                || listView.getCount() == 0
 721                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 722            return null;
 723        } else {
 724            final int pos = listView.getFirstVisiblePosition();
 725            final View view = listView.getChildAt(0);
 726            if (view == null) {
 727                return null;
 728            } else {
 729                return new ScrollState(pos, view.getTop());
 730            }
 731        }
 732    }
 733
 734    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 735        if (scrollPosition != null) {
 736
 737            this.lastMessageUuid = lastMessageUuid;
 738            if (lastMessageUuid != null) {
 739                binding.unreadCountCustomView.setUnreadCount(
 740                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 741            }
 742            // TODO maybe this needs a 'post'
 743            this.binding.messagesView.setSelectionFromTop(
 744                    scrollPosition.position, scrollPosition.offset);
 745            toggleScrollDownButton();
 746        }
 747    }
 748
 749    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 750        if (conversation == null) {
 751            return;
 752        }
 753        activity.xmppConnectionService.attachLocationToConversation(
 754                conversation,
 755                uri,
 756                new UiCallback<Message>() {
 757
 758                    @Override
 759                    public void success(Message message) {}
 760
 761                    @Override
 762                    public void error(int errorCode, Message object) {
 763                        // TODO show possible pgp error
 764                    }
 765
 766                    @Override
 767                    public void userInputRequired(PendingIntent pi, Message object) {}
 768                });
 769    }
 770
 771    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 772        if (conversation == null) {
 773            return;
 774        }
 775        final Toast prepareFileToast =
 776                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 777        prepareFileToast.show();
 778        activity.delegateUriPermissionsToService(uri);
 779        activity.xmppConnectionService.attachFileToConversation(
 780                conversation,
 781                uri,
 782                type,
 783                new UiInformableCallback<Message>() {
 784                    @Override
 785                    public void inform(final String text) {
 786                        hidePrepareFileToast(prepareFileToast);
 787                        runOnUiThread(() -> activity.replaceToast(text));
 788                    }
 789
 790                    @Override
 791                    public void success(Message message) {
 792                        runOnUiThread(() -> activity.hideToast());
 793                        hidePrepareFileToast(prepareFileToast);
 794                    }
 795
 796                    @Override
 797                    public void error(final int errorCode, Message message) {
 798                        hidePrepareFileToast(prepareFileToast);
 799                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 800                    }
 801
 802                    @Override
 803                    public void userInputRequired(PendingIntent pi, Message message) {
 804                        hidePrepareFileToast(prepareFileToast);
 805                    }
 806                });
 807    }
 808
 809    public void attachEditorContentToConversation(Uri uri) {
 810        mediaPreviewAdapter.addMediaPreviews(
 811                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 812        toggleInputMethod();
 813    }
 814
 815    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 816        if (conversation == null) {
 817            return;
 818        }
 819        final Toast prepareFileToast =
 820                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 821        prepareFileToast.show();
 822        activity.delegateUriPermissionsToService(uri);
 823        activity.xmppConnectionService.attachImageToConversation(
 824                conversation,
 825                uri,
 826                type,
 827                new UiCallback<Message>() {
 828
 829                    @Override
 830                    public void userInputRequired(PendingIntent pi, Message object) {
 831                        hidePrepareFileToast(prepareFileToast);
 832                    }
 833
 834                    @Override
 835                    public void success(Message message) {
 836                        hidePrepareFileToast(prepareFileToast);
 837                    }
 838
 839                    @Override
 840                    public void error(final int error, final Message message) {
 841                        hidePrepareFileToast(prepareFileToast);
 842                        final ConversationsActivity activity = ConversationFragment.this.activity;
 843                        if (activity == null) {
 844                            return;
 845                        }
 846                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 847                    }
 848                });
 849    }
 850
 851    private void hidePrepareFileToast(final Toast prepareFileToast) {
 852        if (prepareFileToast != null && activity != null) {
 853            activity.runOnUiThread(prepareFileToast::cancel);
 854        }
 855    }
 856
 857    private void sendMessage() {
 858        conversation.setUserSelectedThread(false);
 859        if (mediaPreviewAdapter.hasAttachments()) {
 860            commitAttachments();
 861            return;
 862        }
 863        final Editable text = this.binding.textinput.getText();
 864        final String body = text == null ? "" : text.toString();
 865        final Conversation conversation = this.conversation;
 866        if (body.length() == 0 || conversation == null) {
 867            return;
 868        }
 869        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 870            return;
 871        }
 872        final Message message;
 873        if (conversation.getCorrectingMessage() == null) {
 874            message = new Message(conversation, body, conversation.getNextEncryption());
 875            message.setThread(conversation.getThread());
 876            Message.configurePrivateMessage(message);
 877        } else {
 878            message = conversation.getCorrectingMessage();
 879            message.setBody(body);
 880            message.putEdited(message.getUuid(), message.getServerMsgId());
 881            message.setServerMsgId(null);
 882            message.setUuid(UUID.randomUUID().toString());
 883        }
 884        switch (conversation.getNextEncryption()) {
 885            case Message.ENCRYPTION_PGP:
 886                sendPgpMessage(message);
 887                break;
 888            default:
 889                sendMessage(message);
 890        }
 891    }
 892
 893    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 894        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 895                && trustKeysIfNeeded(requestCode);
 896    }
 897
 898    protected boolean trustKeysIfNeeded(int requestCode) {
 899        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 900        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 901        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 902        boolean hasUndecidedOwn =
 903                !axolotlService
 904                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 905                        .isEmpty();
 906        boolean hasUndecidedContacts =
 907                !axolotlService
 908                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 909                        .isEmpty();
 910        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 911        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 912        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 913        if (hasUndecidedOwn
 914                || hasUndecidedContacts
 915                || hasPendingKeys
 916                || hasNoTrustedKeys
 917                || hasUnaccepted
 918                || downloadInProgress) {
 919            axolotlService.createSessionsIfNeeded(conversation);
 920            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 921            String[] contacts = new String[targets.size()];
 922            for (int i = 0; i < contacts.length; ++i) {
 923                contacts[i] = targets.get(i).toString();
 924            }
 925            intent.putExtra("contacts", contacts);
 926            intent.putExtra(
 927                    EXTRA_ACCOUNT,
 928                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 929            intent.putExtra("conversation", conversation.getUuid());
 930            startActivityForResult(intent, requestCode);
 931            return true;
 932        } else {
 933            return false;
 934        }
 935    }
 936
 937    public void updateChatMsgHint() {
 938        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 939        if (conversation.getCorrectingMessage() != null) {
 940            this.binding.textInputHint.setVisibility(View.GONE);
 941            this.binding.textinput.setHint(R.string.send_corrected_message);
 942            binding.conversationViewPager.setCurrentItem(0);
 943        } else if (multi && conversation.getNextCounterpart() != null) {
 944            this.binding.textinput.setHint(R.string.send_message);
 945            this.binding.textInputHint.setVisibility(View.VISIBLE);
 946            this.binding.textInputHint.setText(
 947                    getString(
 948                            R.string.send_private_message_to,
 949                            conversation.getNextCounterpart().getResource()));
 950            binding.conversationViewPager.setCurrentItem(0);
 951        } else if (multi && !conversation.getMucOptions().participating()) {
 952            this.binding.textInputHint.setVisibility(View.GONE);
 953            this.binding.textinput.setHint(R.string.you_are_not_participating);
 954        } else {
 955            this.binding.textInputHint.setVisibility(View.GONE);
 956            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 957            getActivity().invalidateOptionsMenu();
 958        }
 959
 960        binding.messagesView.post(this::updateThreadFromLastMessage);
 961    }
 962
 963    public void setupIme() {
 964        this.binding.textinput.refreshIme();
 965    }
 966
 967    private void handleActivityResult(ActivityResult activityResult) {
 968        if (activityResult.resultCode == Activity.RESULT_OK) {
 969            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 970        } else {
 971            handleNegativeActivityResult(activityResult.requestCode);
 972        }
 973    }
 974
 975    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 976        switch (requestCode) {
 977            case REQUEST_TRUST_KEYS_TEXT:
 978                sendMessage();
 979                break;
 980            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 981                commitAttachments();
 982                break;
 983            case REQUEST_START_AUDIO_CALL:
 984                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 985                break;
 986            case REQUEST_START_VIDEO_CALL:
 987                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 988                break;
 989            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 990                final List<Attachment> imageUris =
 991                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 992                mediaPreviewAdapter.addMediaPreviews(imageUris);
 993                toggleInputMethod();
 994                break;
 995            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 996                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 997                if (takePhotoUri != null) {
 998                    mediaPreviewAdapter.addMediaPreviews(
 999                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
1000                    toggleInputMethod();
1001                } else {
1002                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
1003                }
1004                break;
1005            case ATTACHMENT_CHOICE_CHOOSE_FILE:
1006            case ATTACHMENT_CHOICE_RECORD_VIDEO:
1007            case ATTACHMENT_CHOICE_RECORD_VOICE:
1008                final Attachment.Type type =
1009                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
1010                                ? Attachment.Type.RECORDING
1011                                : Attachment.Type.FILE;
1012                final List<Attachment> fileUris =
1013                        Attachment.extractAttachments(getActivity(), data, type);
1014                mediaPreviewAdapter.addMediaPreviews(fileUris);
1015                toggleInputMethod();
1016                break;
1017            case ATTACHMENT_CHOICE_LOCATION:
1018                final double latitude = data.getDoubleExtra("latitude", 0);
1019                final double longitude = data.getDoubleExtra("longitude", 0);
1020                final int accuracy = data.getIntExtra("accuracy", 0);
1021                final Uri geo;
1022                if (accuracy > 0) {
1023                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1024                } else {
1025                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1026                }
1027                mediaPreviewAdapter.addMediaPreviews(
1028                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1029                toggleInputMethod();
1030                break;
1031            case REQUEST_INVITE_TO_CONVERSATION:
1032                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1033                if (invite != null) {
1034                    if (invite.execute(activity)) {
1035                        activity.mToast =
1036                                Toast.makeText(
1037                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1038                        activity.mToast.show();
1039                    }
1040                }
1041                break;
1042        }
1043    }
1044
1045    private void commitAttachments() {
1046        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1047        if (anyNeedsExternalStoragePermission(attachments)
1048                && !hasPermissions(
1049                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1050            return;
1051        }
1052        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1053            return;
1054        }
1055        final PresenceSelector.OnPresenceSelected callback =
1056                () -> {
1057                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1058                        final Attachment attachment = i.next();
1059                        if (attachment.getType() == Attachment.Type.LOCATION) {
1060                            attachLocationToConversation(conversation, attachment.getUri());
1061                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1062                            Log.d(
1063                                    Config.LOGTAG,
1064                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1065                            attachImageToConversation(
1066                                    conversation, attachment.getUri(), attachment.getMime());
1067                        } else {
1068                            Log.d(
1069                                    Config.LOGTAG,
1070                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1071                            attachFileToConversation(
1072                                    conversation, attachment.getUri(), attachment.getMime());
1073                        }
1074                    }
1075                    mediaPreviewAdapter.notifyDataSetChanged();
1076                    toggleInputMethod();
1077                };
1078        if (conversation == null
1079                || conversation.getMode() == Conversation.MODE_MULTI
1080                || Attachment.canBeSendInband(attachments)
1081                || (conversation.getAccount().httpUploadAvailable()
1082                        && FileBackend.allFilesUnderSize(
1083                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1084            callback.onPresenceSelected();
1085        } else {
1086            activity.selectPresence(conversation, callback);
1087        }
1088    }
1089
1090    private static boolean anyNeedsExternalStoragePermission(
1091            final Collection<Attachment> attachments) {
1092        for (final Attachment attachment : attachments) {
1093            if (attachment.getType() != Attachment.Type.LOCATION) {
1094                return true;
1095            }
1096        }
1097        return false;
1098    }
1099
1100    public void toggleInputMethod() {
1101        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1102        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1103        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1104        updateSendButton();
1105    }
1106
1107    private void handleNegativeActivityResult(int requestCode) {
1108        switch (requestCode) {
1109            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1110                if (pendingTakePhotoUri.clear()) {
1111                    Log.d(
1112                            Config.LOGTAG,
1113                            "cleared pending photo uri after negative activity result");
1114                }
1115                break;
1116        }
1117    }
1118
1119    @Override
1120    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1121        super.onActivityResult(requestCode, resultCode, data);
1122        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1123        if (activity != null && activity.xmppConnectionService != null) {
1124            handleActivityResult(activityResult);
1125        } else {
1126            this.postponedActivityResult.push(activityResult);
1127        }
1128    }
1129
1130    public void unblockConversation(final Blockable conversation) {
1131        activity.xmppConnectionService.sendUnblockRequest(conversation);
1132    }
1133
1134    @Override
1135    public void onAttach(Activity activity) {
1136        super.onAttach(activity);
1137        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1138        if (activity instanceof ConversationsActivity) {
1139            this.activity = (ConversationsActivity) activity;
1140        } else {
1141            throw new IllegalStateException(
1142                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1143        }
1144    }
1145
1146    @Override
1147    public void onDetach() {
1148        super.onDetach();
1149        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1150    }
1151
1152    @Override
1153    public void onCreate(Bundle savedInstanceState) {
1154        super.onCreate(savedInstanceState);
1155        setHasOptionsMenu(true);
1156    }
1157
1158    @Override
1159    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1160        menuInflater.inflate(R.menu.fragment_conversation, menu);
1161        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1162        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1163        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1164        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1165        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1166        final MenuItem menuCall = menu.findItem(R.id.action_call);
1167        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1168        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1169        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1170
1171        if (conversation != null) {
1172            if (conversation.getMode() == Conversation.MODE_MULTI) {
1173                menuContactDetails.setVisible(false);
1174                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1175                menuMucDetails.setTitle(
1176                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1177                                ? R.string.action_muc_details
1178                                : R.string.channel_details);
1179                menuCall.setVisible(false);
1180                menuOngoingCall.setVisible(false);
1181            } else {
1182                final XmppConnectionService service =
1183                        activity == null ? null : activity.xmppConnectionService;
1184                final Optional<OngoingRtpSession> ongoingRtpSession =
1185                        service == null
1186                                ? Optional.absent()
1187                                : service.getJingleConnectionManager()
1188                                        .getOngoingRtpConnection(conversation.getContact());
1189                if (ongoingRtpSession.isPresent()) {
1190                    menuOngoingCall.setVisible(true);
1191                    menuCall.setVisible(false);
1192                } else {
1193                    menuOngoingCall.setVisible(false);
1194                    final RtpCapability.Capability rtpCapability =
1195                            RtpCapability.check(conversation.getContact());
1196                    final boolean cameraAvailable =
1197                            activity != null && activity.isCameraFeatureAvailable();
1198                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1199                    menuVideoCall.setVisible(
1200                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1201                }
1202                menuContactDetails.setVisible(!this.conversation.withSelf());
1203                menuMucDetails.setVisible(false);
1204                menuInviteContact.setVisible(
1205                        service != null
1206                                && service.findConferenceServer(conversation.getAccount()) != null);
1207            }
1208            if (conversation.isMuted()) {
1209                menuMute.setVisible(false);
1210            } else {
1211                menuUnmute.setVisible(false);
1212            }
1213            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1214            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1215            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1216                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1217            } else {
1218                menuTogglePinned.setTitle(R.string.add_to_favorites);
1219            }
1220        }
1221        super.onCreateOptionsMenu(menu, menuInflater);
1222    }
1223
1224    @Override
1225    public View onCreateView(
1226            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1227        this.binding =
1228                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1229        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1230
1231        binding.textinput.addTextChangedListener(
1232                new StylingHelper.MessageEditorStyler(binding.textinput));
1233
1234        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1235        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1236
1237        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1238
1239        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1240        binding.messagesView.setOnScrollListener(mOnScrollListener);
1241        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1242        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1243        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1244        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1245        messageListAdapter.setOnContactPictureClicked(this);
1246        messageListAdapter.setOnContactPictureLongClicked(this);
1247        binding.messagesView.setAdapter(messageListAdapter);
1248
1249        registerForContextMenu(binding.messagesView);
1250
1251        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1252            this.binding.textinput.setCustomInsertionActionModeCallback(
1253                    new EditMessageActionModeCallback(this.binding.textinput));
1254        }
1255
1256        messageListAdapter.setOnMessageBoxClicked(message -> {
1257            setThread(message.getThread());
1258            conversation.setUserSelectedThread(true);
1259        });
1260
1261        binding.threadIdenticonLayout.setOnClickListener(v -> {
1262            boolean wasLocked = conversation.getLockThread();
1263            conversation.setLockThread(false);
1264            if (wasLocked) {
1265                conversation.setUserSelectedThread(false);
1266                refresh();
1267                updateThreadFromLastMessage();
1268            } else {
1269                newThread();
1270                conversation.setUserSelectedThread(true);
1271                newThreadTutorialToast("Switched to new thread");
1272            }
1273        });
1274
1275        binding.threadIdenticonLayout.setOnLongClickListener(v -> {
1276            boolean wasLocked = conversation.getLockThread();
1277            conversation.setLockThread(false);
1278            setThread(null);
1279            conversation.setUserSelectedThread(true);
1280            if (wasLocked) refresh();
1281            newThreadTutorialToast("Cleared thread");
1282            return true;
1283        });
1284
1285        return binding.getRoot();
1286    }
1287
1288    protected void newThreadTutorialToast(String s) {
1289        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1290        final int tutorialCount = p.getInt("thread_tutorial", 0);
1291        if (tutorialCount < 5) {
1292            Toast.makeText(activity, s, Toast.LENGTH_SHORT).show();
1293            p.edit().putInt("thread_tutorial", tutorialCount + 1).apply();
1294        }
1295    }
1296
1297    @Override
1298    public void onDestroyView() {
1299        super.onDestroyView();
1300        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1301        messageListAdapter.setOnContactPictureClicked(null);
1302        messageListAdapter.setOnContactPictureLongClicked(null);
1303        if (conversation != null) conversation.setupViewPager(null, null);
1304    }
1305
1306    private void quoteText(String text) {
1307        if (binding.textinput.isEnabled()) {
1308            binding.textinput.insertAsQuote(text);
1309            binding.textinput.requestFocus();
1310            InputMethodManager inputMethodManager =
1311                    (InputMethodManager)
1312                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1313            if (inputMethodManager != null) {
1314                inputMethodManager.showSoftInput(
1315                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1316            }
1317        }
1318    }
1319
1320    private void quoteMessage(Message message) {
1321        setThread(message.getThread());
1322        conversation.setUserSelectedThread(true);
1323        quoteText(MessageUtils.prepareQuote(message));
1324    }
1325
1326    private void setThread(Element thread) {
1327        this.conversation.setThread(thread);
1328        binding.threadIdenticon.setAlpha(0f);
1329        binding.threadIdenticonLock.setVisibility(this.conversation.getLockThread() ? View.VISIBLE : View.GONE);
1330        if (thread != null) {
1331            final String threadId = thread.getContent();
1332            if (threadId != null) {
1333                binding.threadIdenticon.setAlpha(1f);
1334                binding.threadIdenticon.setColor(UIHelper.getColorForName(threadId));
1335                binding.threadIdenticon.setHash(UIHelper.identiconHash(threadId));
1336            }
1337        }
1338    }
1339
1340    @Override
1341    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1342        // This should cancel any remaining click events that would otherwise trigger links
1343        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1344        synchronized (this.messageList) {
1345            super.onCreateContextMenu(menu, v, menuInfo);
1346            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1347            this.selectedMessage = this.messageList.get(acmi.position);
1348            populateContextMenu(menu);
1349        }
1350    }
1351
1352    private void populateContextMenu(ContextMenu menu) {
1353        final Message m = this.selectedMessage;
1354        final Transferable t = m.getTransferable();
1355        Message relevantForCorrection = m;
1356        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1357            relevantForCorrection = relevantForCorrection.next();
1358        }
1359        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1360
1361            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1362                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1363                return;
1364            }
1365
1366            if (m.getStatus() == Message.STATUS_RECEIVED
1367                    && t != null
1368                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1369                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1370                return;
1371            }
1372
1373            final boolean deleted = m.isDeleted();
1374            final boolean encrypted =
1375                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1376                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1377            final boolean receiving =
1378                    m.getStatus() == Message.STATUS_RECEIVED
1379                            && (t instanceof JingleFileTransferConnection
1380                                    || t instanceof HttpDownloadConnection);
1381            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1382            menu.setHeaderTitle(R.string.message_options);
1383            MenuItem openWith = menu.findItem(R.id.open_with);
1384            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1385            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1386            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1387            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1388            MenuItem retractMessage = menu.findItem(R.id.retract_message);
1389            MenuItem onlyThisThread = menu.findItem(R.id.only_this_thread);
1390            MenuItem shareWith = menu.findItem(R.id.share_with);
1391            MenuItem sendAgain = menu.findItem(R.id.send_again);
1392            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1393            MenuItem downloadFile = menu.findItem(R.id.download_file);
1394            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1395            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1396            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1397            onlyThisThread.setVisible(!conversation.getLockThread() && m.getThread() != null);
1398            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1399            final boolean showError =
1400                    m.getStatus() == Message.STATUS_SEND_FAILED
1401                            && m.getErrorMessage() != null
1402                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1403            if (!m.isFileOrImage()
1404                    && !encrypted
1405                    && !m.isGeoUri()
1406                    && !m.treatAsDownloadable()
1407                    && !unInitiatedButKnownSize
1408                    && t == null) {
1409                copyMessage.setVisible(true);
1410                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1411            }
1412            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1413                retryDecryption.setVisible(true);
1414            }
1415            if (!showError
1416                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1417                    && !m.isGeoUri()
1418                    && relevantForCorrection.isLastCorrectableMessage()
1419                    && m.getConversation() instanceof Conversation) {
1420                correctMessage.setVisible(true);
1421                if (!relevantForCorrection.getBody().equals("") && !relevantForCorrection.getBody().equals(" ")) retractMessage.setVisible(true);
1422            }
1423            if ((m.isFileOrImage() && !deleted && !receiving)
1424                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1425                            && !unInitiatedButKnownSize
1426                            && t == null) {
1427                shareWith.setVisible(true);
1428            }
1429            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1430                sendAgain.setVisible(true);
1431            }
1432            if (m.hasFileOnRemoteHost()
1433                    || m.isGeoUri()
1434                    || m.treatAsDownloadable()
1435                    || unInitiatedButKnownSize
1436                    || t instanceof HttpDownloadConnection) {
1437                copyUrl.setVisible(true);
1438            }
1439            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1440                downloadFile.setVisible(true);
1441                downloadFile.setTitle(
1442                        activity.getString(
1443                                R.string.download_x_file,
1444                                UIHelper.getFileDescriptionString(activity, m)));
1445            }
1446            final boolean waitingOfferedSending =
1447                    m.getStatus() == Message.STATUS_WAITING
1448                            || m.getStatus() == Message.STATUS_UNSEND
1449                            || m.getStatus() == Message.STATUS_OFFERED;
1450            final boolean cancelable =
1451                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1452            if (cancelable) {
1453                cancelTransmission.setVisible(true);
1454            }
1455            if (m.isFileOrImage() && !deleted && !cancelable) {
1456                final String path = m.getRelativeFilePath();
1457                if (path == null
1458                        || !path.startsWith("/")
1459                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1460                    deleteFile.setVisible(true);
1461                    deleteFile.setTitle(
1462                            activity.getString(
1463                                    R.string.delete_x_file,
1464                                    UIHelper.getFileDescriptionString(activity, m)));
1465                }
1466            }
1467            if (showError) {
1468                showErrorMessage.setVisible(true);
1469            }
1470            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1471            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1472                    || (mime != null && mime.startsWith("audio/"))) {
1473                openWith.setVisible(true);
1474            }
1475        }
1476    }
1477
1478    @Override
1479    public boolean onContextItemSelected(MenuItem item) {
1480        switch (item.getItemId()) {
1481            case R.id.share_with:
1482                ShareUtil.share(activity, selectedMessage);
1483                return true;
1484            case R.id.correct_message:
1485                correctMessage(selectedMessage);
1486                return true;
1487            case R.id.retract_message:
1488                new AlertDialog.Builder(activity)
1489                    .setTitle(R.string.retract_message)
1490                    .setMessage("Do you really want to retract this message?")
1491                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1492                        Message message = selectedMessage;
1493                        while (message.mergeable(message.next())) {
1494                            message = message.next();
1495                        }
1496                        message.setBody(" ");
1497                        message.putEdited(message.getUuid(), message.getServerMsgId());
1498                        message.setServerMsgId(null);
1499                        message.setUuid(UUID.randomUUID().toString());
1500                        sendMessage(message);
1501                    })
1502                    .setNegativeButton(R.string.no, null).show();
1503                return true;
1504            case R.id.copy_message:
1505                ShareUtil.copyToClipboard(activity, selectedMessage);
1506                return true;
1507            case R.id.quote_message:
1508                quoteMessage(selectedMessage);
1509                return true;
1510            case R.id.send_again:
1511                resendMessage(selectedMessage);
1512                return true;
1513            case R.id.copy_url:
1514                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1515                return true;
1516            case R.id.download_file:
1517                startDownloadable(selectedMessage);
1518                return true;
1519            case R.id.cancel_transmission:
1520                cancelTransmission(selectedMessage);
1521                return true;
1522            case R.id.retry_decryption:
1523                retryDecryption(selectedMessage);
1524                return true;
1525            case R.id.delete_file:
1526                deleteFile(selectedMessage);
1527                return true;
1528            case R.id.show_error_message:
1529                showErrorMessage(selectedMessage);
1530                return true;
1531            case R.id.open_with:
1532                openWith(selectedMessage);
1533                return true;
1534            case R.id.only_this_thread:
1535                conversation.setLockThread(true);
1536                setThread(selectedMessage.getThread());
1537                refresh();
1538                return true;
1539            default:
1540                return super.onContextItemSelected(item);
1541        }
1542    }
1543
1544    @Override
1545    public boolean onOptionsItemSelected(final MenuItem item) {
1546        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1547            return false;
1548        } else if (conversation == null) {
1549            return super.onOptionsItemSelected(item);
1550        }
1551        switch (item.getItemId()) {
1552            case R.id.encryption_choice_axolotl:
1553            case R.id.encryption_choice_pgp:
1554            case R.id.encryption_choice_none:
1555                handleEncryptionSelection(item);
1556                break;
1557            case R.id.attach_choose_picture:
1558            case R.id.attach_take_picture:
1559            case R.id.attach_record_video:
1560            case R.id.attach_choose_file:
1561            case R.id.attach_record_voice:
1562            case R.id.attach_location:
1563                handleAttachmentSelection(item);
1564                break;
1565            case R.id.action_search:
1566                startSearch();
1567                break;
1568            case R.id.action_archive:
1569                activity.xmppConnectionService.archiveConversation(conversation);
1570                break;
1571            case R.id.action_contact_details:
1572                activity.switchToContactDetails(conversation.getContact());
1573                break;
1574            case R.id.action_muc_details:
1575                ConferenceDetailsActivity.open(activity, conversation);
1576                break;
1577            case R.id.action_invite:
1578                startActivityForResult(
1579                        ChooseContactActivity.create(activity, conversation),
1580                        REQUEST_INVITE_TO_CONVERSATION);
1581                break;
1582            case R.id.action_clear_history:
1583                clearHistoryDialog(conversation);
1584                break;
1585            case R.id.action_mute:
1586                muteConversationDialog(conversation);
1587                break;
1588            case R.id.action_unmute:
1589                unMuteConversation(conversation);
1590                break;
1591            case R.id.action_block:
1592            case R.id.action_unblock:
1593                final Activity activity = getActivity();
1594                if (activity instanceof XmppActivity) {
1595                    BlockContactDialog.show((XmppActivity) activity, conversation);
1596                }
1597                break;
1598            case R.id.action_audio_call:
1599                checkPermissionAndTriggerAudioCall();
1600                break;
1601            case R.id.action_video_call:
1602                checkPermissionAndTriggerVideoCall();
1603                break;
1604            case R.id.action_ongoing_call:
1605                returnToOngoingCall();
1606                break;
1607            case R.id.action_toggle_pinned:
1608                togglePinned();
1609                break;
1610            case R.id.action_refresh_feature_discovery:
1611                refreshFeatureDiscovery();
1612                break;
1613            default:
1614                break;
1615        }
1616        return super.onOptionsItemSelected(item);
1617    }
1618
1619    private void startSearch() {
1620        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1621        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1622        startActivity(intent);
1623    }
1624
1625    private void returnToOngoingCall() {
1626        final Optional<OngoingRtpSession> ongoingRtpSession =
1627                activity.xmppConnectionService
1628                        .getJingleConnectionManager()
1629                        .getOngoingRtpConnection(conversation.getContact());
1630        if (ongoingRtpSession.isPresent()) {
1631            final OngoingRtpSession id = ongoingRtpSession.get();
1632            final Intent intent = new Intent(activity, RtpSessionActivity.class);
1633            intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, id.getAccount().getJid().asBareJid().toEscapedString());
1634            intent.putExtra(
1635                    RtpSessionActivity.EXTRA_ACCOUNT,
1636                    id.getAccount().getJid().asBareJid().toEscapedString());
1637            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1638            if (id instanceof AbstractJingleConnection.Id) {
1639                intent.setAction(Intent.ACTION_VIEW);
1640                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1641            } else if (id instanceof JingleConnectionManager.RtpSessionProposal) {
1642                if (((JingleConnectionManager.RtpSessionProposal) id).media.contains(Media.VIDEO)) {
1643                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1644                } else {
1645                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1646                }
1647            }
1648            activity.startActivity(intent);
1649        }
1650    }
1651
1652    private void refreshFeatureDiscovery() {
1653        for (Map.Entry<String, Presence> entry : conversation.getContact().getPresences().getPresencesMap().entrySet()) {
1654            Jid jid = conversation.getContact().getJid();
1655            if (!entry.getKey().equals("")) jid = jid.withResource(entry.getKey());
1656            activity.xmppConnectionService.fetchCaps(conversation.getAccount(), jid, entry.getValue(), () -> {
1657                if (activity == null) return;
1658                activity.runOnUiThread(() -> {
1659                    refresh();
1660                    refreshCommands();
1661                });
1662            });
1663        }
1664    }
1665
1666    private void togglePinned() {
1667        final boolean pinned =
1668                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1669        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1670        activity.xmppConnectionService.updateConversation(conversation);
1671        activity.invalidateOptionsMenu();
1672    }
1673
1674    private void checkPermissionAndTriggerAudioCall() {
1675        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1676            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1677            return;
1678        }
1679        final List<String> permissions;
1680        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1681            permissions =
1682                    Arrays.asList(
1683                            Manifest.permission.RECORD_AUDIO,
1684                            Manifest.permission.BLUETOOTH_CONNECT);
1685        } else {
1686            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1687        }
1688        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1689            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1690        }
1691    }
1692
1693    private void checkPermissionAndTriggerVideoCall() {
1694        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1695            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1696            return;
1697        }
1698        final List<String> permissions;
1699        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1700            permissions =
1701                    Arrays.asList(
1702                            Manifest.permission.RECORD_AUDIO,
1703                            Manifest.permission.CAMERA,
1704                            Manifest.permission.BLUETOOTH_CONNECT);
1705        } else {
1706            permissions =
1707                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1708        }
1709        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1710            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1711        }
1712    }
1713
1714    private void triggerRtpSession(final String action) {
1715        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy() != null) {
1716            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1717                    .show();
1718            return;
1719        }
1720        final Contact contact = conversation.getContact();
1721        if (contact.getPresences().anySupport(Namespace.JINGLE_MESSAGE)) {
1722            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1723        } else {
1724            final RtpCapability.Capability capability;
1725            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1726                capability = RtpCapability.Capability.VIDEO;
1727            } else {
1728                capability = RtpCapability.Capability.AUDIO;
1729            }
1730            PresenceSelector.selectFullJidForDirectRtpConnection(
1731                    activity,
1732                    contact,
1733                    capability,
1734                    fullJid -> {
1735                        triggerRtpSession(contact.getAccount(), fullJid, action);
1736                    });
1737        }
1738    }
1739
1740    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1741        final Intent intent = new Intent(activity, RtpSessionActivity.class);
1742        intent.setAction(action);
1743        intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, account.getJid().toEscapedString());
1744        intent.putExtra(RtpSessionActivity.EXTRA_WITH, with.toEscapedString());
1745        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1746        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
1747        startActivity(intent);
1748    }
1749
1750    private void handleAttachmentSelection(MenuItem item) {
1751        switch (item.getItemId()) {
1752            case R.id.attach_choose_picture:
1753                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1754                break;
1755            case R.id.attach_take_picture:
1756                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1757                break;
1758            case R.id.attach_record_video:
1759                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1760                break;
1761            case R.id.attach_choose_file:
1762                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1763                break;
1764            case R.id.attach_record_voice:
1765                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1766                break;
1767            case R.id.attach_location:
1768                attachFile(ATTACHMENT_CHOICE_LOCATION);
1769                break;
1770        }
1771    }
1772
1773    private void handleEncryptionSelection(MenuItem item) {
1774        if (conversation == null) {
1775            return;
1776        }
1777        final boolean updated;
1778        switch (item.getItemId()) {
1779            case R.id.encryption_choice_none:
1780                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1781                item.setChecked(true);
1782                break;
1783            case R.id.encryption_choice_pgp:
1784                if (activity.hasPgp()) {
1785                    if (conversation.getAccount().getPgpSignature() != null) {
1786                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1787                        item.setChecked(true);
1788                    } else {
1789                        updated = false;
1790                        activity.announcePgp(
1791                                conversation.getAccount(),
1792                                conversation,
1793                                null,
1794                                activity.onOpenPGPKeyPublished);
1795                    }
1796                } else {
1797                    activity.showInstallPgpDialog();
1798                    updated = false;
1799                }
1800                break;
1801            case R.id.encryption_choice_axolotl:
1802                Log.d(
1803                        Config.LOGTAG,
1804                        AxolotlService.getLogprefix(conversation.getAccount())
1805                                + "Enabled axolotl for Contact "
1806                                + conversation.getContact().getJid());
1807                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1808                item.setChecked(true);
1809                break;
1810            default:
1811                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1812                break;
1813        }
1814        if (updated) {
1815            activity.xmppConnectionService.updateConversation(conversation);
1816        }
1817        updateChatMsgHint();
1818        getActivity().invalidateOptionsMenu();
1819        activity.refreshUi();
1820    }
1821
1822    public void attachFile(final int attachmentChoice) {
1823        attachFile(attachmentChoice, true);
1824    }
1825
1826    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1827        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1828            if (!hasPermissions(
1829                    attachmentChoice,
1830                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1831                    Manifest.permission.RECORD_AUDIO)) {
1832                return;
1833            }
1834        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1835                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1836            if (!hasPermissions(
1837                    attachmentChoice,
1838                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1839                    Manifest.permission.CAMERA)) {
1840                return;
1841            }
1842        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1843            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1844                return;
1845            }
1846        }
1847        if (updateRecentlyUsed) {
1848            storeRecentlyUsedQuickAction(attachmentChoice);
1849        }
1850        final int encryption = conversation.getNextEncryption();
1851        final int mode = conversation.getMode();
1852        if (encryption == Message.ENCRYPTION_PGP) {
1853            if (activity.hasPgp()) {
1854                if (mode == Conversation.MODE_SINGLE
1855                        && conversation.getContact().getPgpKeyId() != 0) {
1856                    activity.xmppConnectionService
1857                            .getPgpEngine()
1858                            .hasKey(
1859                                    conversation.getContact(),
1860                                    new UiCallback<Contact>() {
1861
1862                                        @Override
1863                                        public void userInputRequired(
1864                                                PendingIntent pi, Contact contact) {
1865                                            startPendingIntent(pi, attachmentChoice);
1866                                        }
1867
1868                                        @Override
1869                                        public void success(Contact contact) {
1870                                            invokeAttachFileIntent(attachmentChoice);
1871                                        }
1872
1873                                        @Override
1874                                        public void error(int error, Contact contact) {
1875                                            activity.replaceToast(getString(error));
1876                                        }
1877                                    });
1878                } else if (mode == Conversation.MODE_MULTI
1879                        && conversation.getMucOptions().pgpKeysInUse()) {
1880                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1881                        Toast warning =
1882                                Toast.makeText(
1883                                        getActivity(),
1884                                        R.string.missing_public_keys,
1885                                        Toast.LENGTH_LONG);
1886                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1887                        warning.show();
1888                    }
1889                    invokeAttachFileIntent(attachmentChoice);
1890                } else {
1891                    showNoPGPKeyDialog(
1892                            false,
1893                            (dialog, which) -> {
1894                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1895                                activity.xmppConnectionService.updateConversation(conversation);
1896                                invokeAttachFileIntent(attachmentChoice);
1897                            });
1898                }
1899            } else {
1900                activity.showInstallPgpDialog();
1901            }
1902        } else {
1903            invokeAttachFileIntent(attachmentChoice);
1904        }
1905    }
1906
1907    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1908        try {
1909            activity.getPreferences()
1910                    .edit()
1911                    .putString(
1912                            RECENTLY_USED_QUICK_ACTION,
1913                            SendButtonAction.of(attachmentChoice).toString())
1914                    .apply();
1915        } catch (IllegalArgumentException e) {
1916            // just do not save
1917        }
1918    }
1919
1920    @Override
1921    public void onRequestPermissionsResult(
1922            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1923        final PermissionUtils.PermissionResult permissionResult =
1924                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1925        if (grantResults.length > 0) {
1926            if (allGranted(permissionResult.grantResults)) {
1927                switch (requestCode) {
1928                    case REQUEST_START_DOWNLOAD:
1929                        if (this.mPendingDownloadableMessage != null) {
1930                            startDownloadable(this.mPendingDownloadableMessage);
1931                        }
1932                        break;
1933                    case REQUEST_ADD_EDITOR_CONTENT:
1934                        if (this.mPendingEditorContent != null) {
1935                            attachEditorContentToConversation(this.mPendingEditorContent);
1936                        }
1937                        break;
1938                    case REQUEST_COMMIT_ATTACHMENTS:
1939                        commitAttachments();
1940                        break;
1941                    case REQUEST_START_AUDIO_CALL:
1942                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1943                        break;
1944                    case REQUEST_START_VIDEO_CALL:
1945                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1946                        break;
1947                    default:
1948                        attachFile(requestCode);
1949                        break;
1950                }
1951            } else {
1952                @StringRes int res;
1953                String firstDenied =
1954                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1955                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1956                    res = R.string.no_microphone_permission;
1957                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1958                    res = R.string.no_camera_permission;
1959                } else {
1960                    res = R.string.no_storage_permission;
1961                }
1962                Toast.makeText(
1963                                getActivity(),
1964                                getString(res, getString(R.string.app_name)),
1965                                Toast.LENGTH_SHORT)
1966                        .show();
1967            }
1968        }
1969        if (writeGranted(grantResults, permissions)) {
1970            if (activity != null && activity.xmppConnectionService != null) {
1971                activity.xmppConnectionService.getBitmapCache().evictAll();
1972                activity.xmppConnectionService.restartFileObserver();
1973            }
1974            refresh();
1975        }
1976    }
1977
1978    public void startDownloadable(Message message) {
1979        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1980            this.mPendingDownloadableMessage = message;
1981            return;
1982        }
1983        Transferable transferable = message.getTransferable();
1984        if (transferable != null) {
1985            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1986                createNewConnection(message);
1987                return;
1988            }
1989            if (!transferable.start()) {
1990                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1991                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1992                        .show();
1993            }
1994        } else if (message.treatAsDownloadable()
1995                || message.hasFileOnRemoteHost()
1996                || MessageUtils.unInitiatedButKnownSize(message)) {
1997            createNewConnection(message);
1998        } else {
1999            Log.d(
2000                    Config.LOGTAG,
2001                    message.getConversation().getAccount() + ": unable to start downloadable");
2002        }
2003    }
2004
2005    private void createNewConnection(final Message message) {
2006        if (!activity.xmppConnectionService.hasInternetConnection()) {
2007            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2008                    .show();
2009            return;
2010        }
2011        if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
2012            try {
2013                BobTransfer transfer = new BobTransfer.ForMessage(message, activity.xmppConnectionService);
2014                message.setTransferable(transfer);
2015                transfer.start();
2016            } catch (URISyntaxException e) {
2017                Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
2018            }
2019        } else {
2020            activity.xmppConnectionService
2021                    .getHttpConnectionManager()
2022                    .createNewDownloadConnection(message, true);
2023        }
2024    }
2025
2026    @SuppressLint("InflateParams")
2027    protected void clearHistoryDialog(final Conversation conversation) {
2028        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2029        builder.setTitle(getString(R.string.clear_conversation_history));
2030        final View dialogView =
2031                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
2032        final CheckBox endConversationCheckBox =
2033                dialogView.findViewById(R.id.end_conversation_checkbox);
2034        builder.setView(dialogView);
2035        builder.setNegativeButton(getString(R.string.cancel), null);
2036        builder.setPositiveButton(
2037                getString(R.string.confirm),
2038                (dialog, which) -> {
2039                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
2040                    if (endConversationCheckBox.isChecked()) {
2041                        this.activity.xmppConnectionService.archiveConversation(conversation);
2042                        this.activity.onConversationArchived(conversation);
2043                    } else {
2044                        activity.onConversationsListItemUpdated();
2045                        refresh();
2046                    }
2047                });
2048        builder.create().show();
2049    }
2050
2051    protected void muteConversationDialog(final Conversation conversation) {
2052        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
2053        builder.setTitle(R.string.disable_notifications);
2054        final int[] durations = activity.getResources().getIntArray(R.array.mute_options_durations);
2055        final CharSequence[] labels = new CharSequence[durations.length];
2056        for (int i = 0; i < durations.length; ++i) {
2057            if (durations[i] == -1) {
2058                labels[i] = activity.getString(R.string.until_further_notice);
2059            } else {
2060                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
2061            }
2062        }
2063        builder.setItems(
2064                labels,
2065                (dialog, which) -> {
2066                    final long till;
2067                    if (durations[which] == -1) {
2068                        till = Long.MAX_VALUE;
2069                    } else {
2070                        till = System.currentTimeMillis() + (durations[which] * 1000L);
2071                    }
2072                    conversation.setMutedTill(till);
2073                    activity.xmppConnectionService.updateConversation(conversation);
2074                    activity.onConversationsListItemUpdated();
2075                    refresh();
2076                    activity.invalidateOptionsMenu();
2077                });
2078        builder.create().show();
2079    }
2080
2081    private boolean hasPermissions(int requestCode, List<String> permissions) {
2082        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
2083            final List<String> missingPermissions = new ArrayList<>();
2084            for (String permission : permissions) {
2085                if (Config.ONLY_INTERNAL_STORAGE
2086                        && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2087                    continue;
2088                }
2089                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2090                    missingPermissions.add(permission);
2091                }
2092            }
2093            if (missingPermissions.size() == 0) {
2094                return true;
2095            } else {
2096                requestPermissions(
2097                        missingPermissions.toArray(new String[0]),
2098                        requestCode);
2099                return false;
2100            }
2101        } else {
2102            return true;
2103        }
2104    }
2105
2106    private boolean hasPermissions(int requestCode, String... permissions) {
2107        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2108    }
2109
2110    public void unMuteConversation(final Conversation conversation) {
2111        conversation.setMutedTill(0);
2112        this.activity.xmppConnectionService.updateConversation(conversation);
2113        this.activity.onConversationsListItemUpdated();
2114        refresh();
2115        this.activity.invalidateOptionsMenu();
2116    }
2117
2118    protected void invokeAttachFileIntent(final int attachmentChoice) {
2119        Intent intent = new Intent();
2120        boolean chooser = false;
2121        switch (attachmentChoice) {
2122            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2123                intent.setAction(Intent.ACTION_GET_CONTENT);
2124                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2125                intent.setType("image/*");
2126                chooser = true;
2127                break;
2128            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2129                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2130                break;
2131            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2132                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2133                pendingTakePhotoUri.push(uri);
2134                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2135                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2136                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2137                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2138                break;
2139            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2140                chooser = true;
2141                intent.setType("*/*");
2142                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2143                intent.addCategory(Intent.CATEGORY_OPENABLE);
2144                intent.setAction(Intent.ACTION_GET_CONTENT);
2145                break;
2146            case ATTACHMENT_CHOICE_RECORD_VOICE:
2147                intent = new Intent(getActivity(), RecordingActivity.class);
2148                break;
2149            case ATTACHMENT_CHOICE_LOCATION:
2150                intent = GeoHelper.getFetchIntent(activity);
2151                break;
2152        }
2153        final Context context = getActivity();
2154        if (context == null) {
2155            return;
2156        }
2157        try {
2158            if (chooser) {
2159                startActivityForResult(
2160                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2161                        attachmentChoice);
2162            } else {
2163                startActivityForResult(intent, attachmentChoice);
2164            }
2165        } catch (final ActivityNotFoundException e) {
2166            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2167        }
2168    }
2169
2170    @Override
2171    public void onResume() {
2172        super.onResume();
2173        binding.messagesView.post(this::fireReadEvent);
2174    }
2175
2176    private void fireReadEvent() {
2177        if (activity != null && this.conversation != null) {
2178            String uuid = getLastVisibleMessageUuid();
2179            if (uuid != null) {
2180                activity.onConversationRead(this.conversation, uuid);
2181            }
2182        }
2183    }
2184
2185    private void newThread() {
2186        Element thread = new Element("thread", "jabber:client");
2187        thread.setContent(UUID.randomUUID().toString());
2188        setThread(thread);
2189    }
2190
2191    private void updateThreadFromLastMessage() {
2192        if (this.conversation != null && !this.conversation.getUserSelectedThread() && TextUtils.isEmpty(binding.textinput.getText())) {
2193            Message message = getLastVisibleMessage();
2194            if (message == null) {
2195                newThread();
2196            } else {
2197                setThread(message.getThread());
2198            }
2199        }
2200    }
2201
2202    private String getLastVisibleMessageUuid() {
2203        Message message =  getLastVisibleMessage();
2204        return message == null ? null : message.getUuid();
2205    }
2206
2207    private Message getLastVisibleMessage() {
2208        if (binding == null) {
2209            return null;
2210        }
2211        synchronized (this.messageList) {
2212            int pos = binding.messagesView.getLastVisiblePosition();
2213            if (pos >= 0) {
2214                Message message = null;
2215                for (int i = pos; i >= 0; --i) {
2216                    try {
2217                        message = (Message) binding.messagesView.getItemAtPosition(i);
2218                    } catch (IndexOutOfBoundsException e) {
2219                        // should not happen if we synchronize properly. however if that fails we
2220                        // just gonna try item -1
2221                        continue;
2222                    }
2223                    if (message.getType() != Message.TYPE_STATUS) {
2224                        break;
2225                    }
2226                }
2227                if (message != null) {
2228                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2229                        message = message.next();
2230                    }
2231                    return message;
2232                }
2233            }
2234        }
2235        return null;
2236    }
2237
2238    private void openWith(final Message message) {
2239        if (message.isGeoUri()) {
2240            GeoHelper.view(getActivity(), message);
2241        } else {
2242            final DownloadableFile file =
2243                    activity.xmppConnectionService.getFileBackend().getFile(message);
2244            ViewUtil.view(activity, file);
2245        }
2246    }
2247
2248    private void showErrorMessage(final Message message) {
2249        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2250        builder.setTitle(R.string.error_message);
2251        final String errorMessage = message.getErrorMessage();
2252        final String[] errorMessageParts =
2253                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2254        final String displayError;
2255        if (errorMessageParts.length == 2) {
2256            displayError = errorMessageParts[1];
2257        } else {
2258            displayError = errorMessage;
2259        }
2260        builder.setMessage(displayError);
2261        builder.setNegativeButton(
2262                R.string.copy_to_clipboard,
2263                (dialog, which) -> {
2264                    activity.copyTextToClipboard(displayError, R.string.error_message);
2265                    Toast.makeText(
2266                                    activity,
2267                                    R.string.error_message_copied_to_clipboard,
2268                                    Toast.LENGTH_SHORT)
2269                            .show();
2270                });
2271        builder.setPositiveButton(R.string.confirm, null);
2272        builder.create().show();
2273    }
2274
2275    private void deleteFile(final Message message) {
2276        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2277        builder.setNegativeButton(R.string.cancel, null);
2278        builder.setTitle(R.string.delete_file_dialog);
2279        builder.setMessage(R.string.delete_file_dialog_msg);
2280        builder.setPositiveButton(
2281                R.string.confirm,
2282                (dialog, which) -> {
2283                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2284                        message.setDeleted(true);
2285                        activity.xmppConnectionService.evictPreview(message.getUuid());
2286                        activity.xmppConnectionService.updateMessage(message, false);
2287                        activity.onConversationsListItemUpdated();
2288                        refresh();
2289                    }
2290                });
2291        builder.create().show();
2292    }
2293
2294    private void resendMessage(final Message message) {
2295        if (message.isFileOrImage()) {
2296            if (!(message.getConversation() instanceof Conversation)) {
2297                return;
2298            }
2299            final Conversation conversation = (Conversation) message.getConversation();
2300            final DownloadableFile file =
2301                    activity.xmppConnectionService.getFileBackend().getFile(message);
2302            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2303                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2304                if (!message.hasFileOnRemoteHost()
2305                        && xmppConnection != null
2306                        && conversation.getMode() == Conversational.MODE_SINGLE
2307                        && !xmppConnection
2308                                .getFeatures()
2309                                .httpUpload(message.getFileParams().getSize())) {
2310                    activity.selectPresence(
2311                            conversation,
2312                            () -> {
2313                                message.setCounterpart(conversation.getNextCounterpart());
2314                                activity.xmppConnectionService.resendFailedMessages(message);
2315                                new Handler()
2316                                        .post(
2317                                                () -> {
2318                                                    int size = messageList.size();
2319                                                    this.binding.messagesView.setSelection(
2320                                                            size - 1);
2321                                                });
2322                            });
2323                    return;
2324                }
2325            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2326                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2327                return;
2328            } else {
2329                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2330                message.setDeleted(true);
2331                activity.xmppConnectionService.updateMessage(message, false);
2332                activity.onConversationsListItemUpdated();
2333                refresh();
2334                return;
2335            }
2336        }
2337        activity.xmppConnectionService.resendFailedMessages(message);
2338        new Handler()
2339                .post(
2340                        () -> {
2341                            int size = messageList.size();
2342                            this.binding.messagesView.setSelection(size - 1);
2343                        });
2344    }
2345
2346    private void cancelTransmission(Message message) {
2347        Transferable transferable = message.getTransferable();
2348        if (transferable != null) {
2349            transferable.cancel();
2350        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2351            activity.xmppConnectionService.markMessage(
2352                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2353        }
2354    }
2355
2356    private void retryDecryption(Message message) {
2357        message.setEncryption(Message.ENCRYPTION_PGP);
2358        activity.onConversationsListItemUpdated();
2359        refresh();
2360        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2361    }
2362
2363    public void privateMessageWith(final Jid counterpart) {
2364        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2365            activity.xmppConnectionService.sendChatState(conversation);
2366        }
2367        this.binding.textinput.setText("");
2368        this.conversation.setNextCounterpart(counterpart);
2369        updateChatMsgHint();
2370        updateSendButton();
2371        updateEditablity();
2372    }
2373
2374    private void correctMessage(Message message) {
2375        while (message.mergeable(message.next())) {
2376            message = message.next();
2377        }
2378        this.conversation.setCorrectingMessage(message);
2379        final Editable editable = binding.textinput.getText();
2380        this.conversation.setDraftMessage(editable.toString());
2381        this.binding.textinput.setText("");
2382        this.binding.textinput.append(message.getBody());
2383    }
2384
2385    private void highlightInConference(String nick) {
2386        final Editable editable = this.binding.textinput.getText();
2387        String oldString = editable.toString().trim();
2388        final int pos = this.binding.textinput.getSelectionStart();
2389        if (oldString.isEmpty() || pos == 0) {
2390            editable.insert(0, nick + ": ");
2391        } else {
2392            final char before = editable.charAt(pos - 1);
2393            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2394            if (before == '\n') {
2395                editable.insert(pos, nick + ": ");
2396            } else {
2397                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2398                    if (NickValidityChecker.check(
2399                            conversation,
2400                            Arrays.asList(
2401                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2402                        editable.insert(pos - 2, ", " + nick);
2403                        return;
2404                    }
2405                }
2406                editable.insert(
2407                        pos,
2408                        (Character.isWhitespace(before) ? "" : " ")
2409                                + nick
2410                                + (Character.isWhitespace(after) ? "" : " "));
2411                if (Character.isWhitespace(after)) {
2412                    this.binding.textinput.setSelection(
2413                            this.binding.textinput.getSelectionStart() + 1);
2414                }
2415            }
2416        }
2417    }
2418
2419    @Override
2420    public void startActivityForResult(Intent intent, int requestCode) {
2421        final Activity activity = getActivity();
2422        if (activity instanceof ConversationsActivity) {
2423            ((ConversationsActivity) activity).clearPendingViewIntent();
2424        }
2425        super.startActivityForResult(intent, requestCode);
2426    }
2427
2428    @Override
2429    public void onSaveInstanceState(@NotNull Bundle outState) {
2430        super.onSaveInstanceState(outState);
2431        if (conversation != null) {
2432            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2433            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2434            final Uri uri = pendingTakePhotoUri.peek();
2435            if (uri != null) {
2436                outState.putString(STATE_PHOTO_URI, uri.toString());
2437            }
2438            final ScrollState scrollState = getScrollPosition();
2439            if (scrollState != null) {
2440                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2441            }
2442            final ArrayList<Attachment> attachments =
2443                    mediaPreviewAdapter == null
2444                            ? new ArrayList<>()
2445                            : mediaPreviewAdapter.getAttachments();
2446            if (attachments.size() > 0) {
2447                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2448            }
2449        }
2450    }
2451
2452    @Override
2453    public void onActivityCreated(Bundle savedInstanceState) {
2454        super.onActivityCreated(savedInstanceState);
2455        if (savedInstanceState == null) {
2456            return;
2457        }
2458        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2459        ArrayList<Attachment> attachments =
2460                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2461        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2462        if (uuid != null) {
2463            QuickLoader.set(uuid);
2464            this.pendingConversationsUuid.push(uuid);
2465            if (attachments != null && attachments.size() > 0) {
2466                this.pendingMediaPreviews.push(attachments);
2467            }
2468            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2469            if (takePhotoUri != null) {
2470                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2471            }
2472            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2473        }
2474    }
2475
2476    @Override
2477    public void onStart() {
2478        super.onStart();
2479        if (this.reInitRequiredOnStart && this.conversation != null) {
2480            final Bundle extras = pendingExtras.pop();
2481            reInit(this.conversation, extras != null);
2482            if (extras != null) {
2483                processExtras(extras);
2484            }
2485        } else if (conversation == null
2486                && activity != null
2487                && activity.xmppConnectionService != null) {
2488            final String uuid = pendingConversationsUuid.pop();
2489            Log.d(
2490                    Config.LOGTAG,
2491                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2492                            + uuid);
2493            if (uuid != null) {
2494                findAndReInitByUuidOrArchive(uuid);
2495            }
2496        }
2497    }
2498
2499    @Override
2500    public void onStop() {
2501        super.onStop();
2502        final Activity activity = getActivity();
2503        messageListAdapter.unregisterListenerInAudioPlayer();
2504        if (activity == null || !activity.isChangingConfigurations()) {
2505            hideSoftKeyboard(activity);
2506            messageListAdapter.stopAudioPlayer();
2507        }
2508        if (this.conversation != null) {
2509            final String msg = this.binding.textinput.getText().toString();
2510            storeNextMessage(msg);
2511            updateChatState(this.conversation, msg);
2512            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2513        }
2514        this.reInitRequiredOnStart = true;
2515    }
2516
2517    private void updateChatState(final Conversation conversation, final String msg) {
2518        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2519        Account.State status = conversation.getAccount().getStatus();
2520        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2521            activity.xmppConnectionService.sendChatState(conversation);
2522        }
2523    }
2524
2525    private void saveMessageDraftStopAudioPlayer() {
2526        final Conversation previousConversation = this.conversation;
2527        if (this.activity == null || this.binding == null || previousConversation == null) {
2528            return;
2529        }
2530        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2531        final String msg = this.binding.textinput.getText().toString();
2532        storeNextMessage(msg);
2533        updateChatState(this.conversation, msg);
2534        messageListAdapter.stopAudioPlayer();
2535        mediaPreviewAdapter.clearPreviews();
2536        toggleInputMethod();
2537    }
2538
2539    public void reInit(final Conversation conversation, final Bundle extras) {
2540        QuickLoader.set(conversation.getUuid());
2541        final boolean changedConversation = this.conversation != conversation;
2542        if (changedConversation) {
2543            this.saveMessageDraftStopAudioPlayer();
2544        }
2545        this.clearPending();
2546        if (this.reInit(conversation, extras != null)) {
2547            if (extras != null) {
2548                processExtras(extras);
2549            }
2550            this.reInitRequiredOnStart = false;
2551        } else {
2552            this.reInitRequiredOnStart = true;
2553            pendingExtras.push(extras);
2554        }
2555        resetUnreadMessagesCount();
2556    }
2557
2558    private void reInit(Conversation conversation) {
2559        reInit(conversation, false);
2560    }
2561
2562    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2563        if (conversation == null) {
2564            return false;
2565        }
2566        final Conversation originalConversation = this.conversation;
2567        this.conversation = conversation;
2568        // once we set the conversation all is good and it will automatically do the right thing in
2569        // onStart()
2570        if (this.activity == null || this.binding == null) {
2571            return false;
2572        }
2573
2574        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2575            activity.onConversationArchived(this.conversation);
2576            return false;
2577        }
2578
2579        stopScrolling();
2580        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2581
2582        if (this.conversation.isRead() && hasExtras) {
2583            Log.d(Config.LOGTAG, "trimming conversation");
2584            this.conversation.trim();
2585        }
2586
2587        setupIme();
2588
2589        final boolean scrolledToBottomAndNoPending =
2590                this.scrolledToBottom() && pendingScrollState.peek() == null;
2591
2592        this.binding.textSendButton.setContentDescription(
2593                activity.getString(R.string.send_message_to_x, conversation.getName()));
2594        this.binding.textinput.setKeyboardListener(null);
2595        this.binding.textinput.setText("");
2596        final boolean participating =
2597                conversation.getMode() == Conversational.MODE_SINGLE
2598                        || conversation.getMucOptions().participating();
2599        if (participating) {
2600            this.binding.textinput.append(this.conversation.getNextMessage());
2601        }
2602        this.binding.textinput.setKeyboardListener(this);
2603        messageListAdapter.updatePreferences();
2604        refresh(false);
2605        activity.invalidateOptionsMenu();
2606        this.conversation.messagesLoaded.set(true);
2607        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2608
2609        if (hasExtras || scrolledToBottomAndNoPending) {
2610            resetUnreadMessagesCount();
2611            synchronized (this.messageList) {
2612                Log.d(Config.LOGTAG, "jump to first unread message");
2613                final Message first = conversation.getFirstUnreadMessage();
2614                final int bottom = Math.max(0, this.messageList.size() - 1);
2615                final int pos;
2616                final boolean jumpToBottom;
2617                if (first == null) {
2618                    pos = bottom;
2619                    jumpToBottom = true;
2620                } else {
2621                    int i = getIndexOf(first.getUuid(), this.messageList);
2622                    pos = i < 0 ? bottom : i;
2623                    jumpToBottom = false;
2624                }
2625                setSelection(pos, jumpToBottom);
2626            }
2627        }
2628
2629        this.binding.messagesView.post(this::fireReadEvent);
2630        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2631        // layout which might be unnecessary since we can *see* it
2632        activity.xmppConnectionService
2633                .getNotificationService()
2634                .setOpenConversation(this.conversation);
2635
2636        if (commandAdapter != null && conversation != originalConversation) {
2637            originalConversation.setupViewPager(null, null);
2638            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2639            refreshCommands();
2640        }
2641        if (commandAdapter == null && conversation != null) {
2642            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2643            commandAdapter = new CommandAdapter((XmppActivity) getActivity());
2644            binding.commandsView.setAdapter(commandAdapter);
2645            binding.commandsView.setOnItemClickListener((parent, view, position, id) -> {
2646                final Element command = commandAdapter.getItem(position);
2647                activity.startCommand(conversation.getAccount(), command.getAttributeAsJid("jid"), command.getAttribute("node"));
2648            });
2649            refreshCommands();
2650        }
2651
2652        return true;
2653    }
2654
2655    public void refreshForNewCaps() {
2656        refreshCommands();
2657    }
2658
2659    protected void refreshCommands() {
2660        if (commandAdapter == null) return;
2661
2662        Jid commandJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2663        if (commandJid == null) {
2664            conversation.hideViewPager();
2665        } else {
2666            conversation.showViewPager();
2667            activity.xmppConnectionService.fetchCommands(conversation.getAccount(), commandJid, (a, iq) -> {
2668                if (activity == null) return;
2669
2670                activity.runOnUiThread(() -> {
2671                    if (iq.getType() == IqPacket.TYPE.RESULT) {
2672                        binding.commandsViewProgressbar.setVisibility(View.GONE);
2673                        commandAdapter.clear();
2674                        for (Element child : iq.query().getChildren()) {
2675                            if (!"item".equals(child.getName()) || !Namespace.DISCO_ITEMS.equals(child.getNamespace())) continue;
2676                            commandAdapter.add(child);
2677                        }
2678                    }
2679
2680                    if (commandAdapter.getCount() < 1) conversation.hideViewPager();
2681                });
2682            });
2683        }
2684    }
2685
2686    private void resetUnreadMessagesCount() {
2687        lastMessageUuid = null;
2688        hideUnreadMessagesCount();
2689    }
2690
2691    private void hideUnreadMessagesCount() {
2692        if (this.binding == null) {
2693            return;
2694        }
2695        this.binding.scrollToBottomButton.setEnabled(false);
2696        this.binding.scrollToBottomButton.hide();
2697        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2698    }
2699
2700    private void setSelection(int pos, boolean jumpToBottom) {
2701        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2702        this.binding.messagesView.post(
2703                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2704        this.binding.messagesView.post(this::fireReadEvent);
2705    }
2706
2707    private boolean scrolledToBottom() {
2708        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2709    }
2710
2711    private void processExtras(final Bundle extras) {
2712        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2713        final String text = extras.getString(Intent.EXTRA_TEXT);
2714        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2715        final String node = extras.getString(ConversationsActivity.EXTRA_NODE);
2716        final String postInitAction =
2717                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2718        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2719        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2720        final boolean doNotAppend =
2721                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2722        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2723        final List<Uri> uris = extractUris(extras);
2724        if (uris != null && uris.size() > 0) {
2725            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2726                mediaPreviewAdapter.addMediaPreviews(
2727                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2728            } else {
2729                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2730                mediaPreviewAdapter.addMediaPreviews(
2731                        Attachment.of(getActivity(), cleanedUris, type));
2732            }
2733            toggleInputMethod();
2734            return;
2735        }
2736        if (nick != null) {
2737            if (pm) {
2738                Jid jid = conversation.getJid();
2739                try {
2740                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2741                    privateMessageWith(next);
2742                } catch (final IllegalArgumentException ignored) {
2743                    // do nothing
2744                }
2745            } else {
2746                final MucOptions mucOptions = conversation.getMucOptions();
2747                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2748                    highlightInConference(nick);
2749                }
2750            }
2751        } else {
2752            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2753                mediaPreviewAdapter.addMediaPreviews(
2754                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2755                toggleInputMethod();
2756                return;
2757            } else if (text != null && asQuote) {
2758                quoteText(text);
2759            } else {
2760                appendText(text, doNotAppend);
2761            }
2762        }
2763        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2764            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2765            return;
2766        }
2767        if ("message".equals(postInitAction)) {
2768            binding.conversationViewPager.post(() -> {
2769                binding.conversationViewPager.setCurrentItem(0);
2770            });
2771        }
2772        if ("command".equals(postInitAction)) {
2773            binding.conversationViewPager.post(() -> {
2774                PagerAdapter adapter = binding.conversationViewPager.getAdapter();
2775                if (adapter != null && adapter.getCount() > 1) {
2776                    binding.conversationViewPager.setCurrentItem(1);
2777                }
2778                final String jid = extras.getString(ConversationsActivity.EXTRA_JID);
2779                Jid commandJid = null;
2780                if (jid != null) {
2781                    try {
2782                        commandJid = Jid.of(jid);
2783                    } catch (final IllegalArgumentException e) { }
2784                }
2785                if (commandJid == null || !commandJid.isFullJid()) {
2786                    final Jid discoJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2787                    if (discoJid != null) commandJid = discoJid;
2788                }
2789                if (node != null && commandJid != null) {
2790                    conversation.startCommand(commandFor(commandJid, node), activity.xmppConnectionService);
2791                }
2792            });
2793            return;
2794        }
2795        final Message message =
2796                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2797        if (message != null) {
2798            startDownloadable(message);
2799        }
2800    }
2801
2802    private Element commandFor(final Jid jid, final String node) {
2803        if (commandAdapter != null) {
2804            for (int i = 0; i < commandAdapter.getCount(); i++) {
2805                Element command = commandAdapter.getItem(i);
2806                final String commandNode = command.getAttribute("node");
2807                if (commandNode == null || !commandNode.equals(node)) continue;
2808
2809                final Jid commandJid = command.getAttributeAsJid("jid");
2810                if (commandJid != null && !commandJid.asBareJid().equals(jid.asBareJid())) continue;
2811
2812                return command;
2813            }
2814        }
2815
2816        return new Element("command", Namespace.COMMANDS).setAttribute("name", node).setAttribute("node", node).setAttribute("jid", jid);
2817    }
2818
2819    private List<Uri> extractUris(final Bundle extras) {
2820        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2821        if (uris != null) {
2822            return uris;
2823        }
2824        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2825        if (uri != null) {
2826            return Collections.singletonList(uri);
2827        } else {
2828            return null;
2829        }
2830    }
2831
2832    private List<Uri> cleanUris(final List<Uri> uris) {
2833        final Iterator<Uri> iterator = uris.iterator();
2834        while (iterator.hasNext()) {
2835            final Uri uri = iterator.next();
2836            if (FileBackend.weOwnFile(uri)) {
2837                iterator.remove();
2838                Toast.makeText(
2839                                getActivity(),
2840                                R.string.security_violation_not_attaching_file,
2841                                Toast.LENGTH_SHORT)
2842                        .show();
2843            }
2844        }
2845        return uris;
2846    }
2847
2848    private boolean showBlockSubmenu(View view) {
2849        final Jid jid = conversation.getJid();
2850        final boolean showReject =
2851                !conversation.isWithStranger()
2852                        && conversation
2853                                .getContact()
2854                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2855        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2856        popupMenu.inflate(R.menu.block);
2857        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2858        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2859        popupMenu.setOnMenuItemClickListener(
2860                menuItem -> {
2861                    Blockable blockable;
2862                    switch (menuItem.getItemId()) {
2863                        case R.id.reject:
2864                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2865                                    conversation.getContact());
2866                            updateSnackBar(conversation);
2867                            return true;
2868                        case R.id.block_domain:
2869                            blockable =
2870                                    conversation
2871                                            .getAccount()
2872                                            .getRoster()
2873                                            .getContact(jid.getDomain());
2874                            break;
2875                        default:
2876                            blockable = conversation;
2877                    }
2878                    BlockContactDialog.show(activity, blockable);
2879                    return true;
2880                });
2881        popupMenu.show();
2882        return true;
2883    }
2884
2885    private void updateSnackBar(final Conversation conversation) {
2886        final Account account = conversation.getAccount();
2887        final XmppConnection connection = account.getXmppConnection();
2888        final int mode = conversation.getMode();
2889        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2890        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2891            return;
2892        }
2893        if (account.getStatus() == Account.State.DISABLED) {
2894            showSnackbar(
2895                    R.string.this_account_is_disabled,
2896                    R.string.enable,
2897                    this.mEnableAccountListener);
2898        } else if (conversation.isBlocked()) {
2899            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2900        } else if (contact != null
2901                && !contact.showInRoster()
2902                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2903            showSnackbar(
2904                    R.string.contact_added_you,
2905                    R.string.add_back,
2906                    this.mAddBackClickListener,
2907                    this.mLongPressBlockListener);
2908        } else if (contact != null
2909                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2910            showSnackbar(
2911                    R.string.contact_asks_for_presence_subscription,
2912                    R.string.allow,
2913                    this.mAllowPresenceSubscription,
2914                    this.mLongPressBlockListener);
2915        } else if (mode == Conversation.MODE_MULTI
2916                && !conversation.getMucOptions().online()
2917                && account.getStatus() == Account.State.ONLINE) {
2918            switch (conversation.getMucOptions().getError()) {
2919                case NICK_IN_USE:
2920                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2921                    break;
2922                case NO_RESPONSE:
2923                    showSnackbar(R.string.joining_conference, 0, null);
2924                    break;
2925                case SERVER_NOT_FOUND:
2926                    if (conversation.receivedMessagesCount() > 0) {
2927                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2928                    } else {
2929                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2930                    }
2931                    break;
2932                case REMOTE_SERVER_TIMEOUT:
2933                    if (conversation.receivedMessagesCount() > 0) {
2934                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2935                    } else {
2936                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2937                    }
2938                    break;
2939                case PASSWORD_REQUIRED:
2940                    showSnackbar(
2941                            R.string.conference_requires_password,
2942                            R.string.enter_password,
2943                            enterPassword);
2944                    break;
2945                case BANNED:
2946                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2947                    break;
2948                case MEMBERS_ONLY:
2949                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2950                    break;
2951                case RESOURCE_CONSTRAINT:
2952                    showSnackbar(
2953                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2954                    break;
2955                case KICKED:
2956                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2957                    break;
2958                case TECHNICAL_PROBLEMS:
2959                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
2960                    break;
2961                case UNKNOWN:
2962                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2963                    break;
2964                case INVALID_NICK:
2965                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2966                case SHUTDOWN:
2967                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2968                    break;
2969                case DESTROYED:
2970                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2971                    break;
2972                case NON_ANONYMOUS:
2973                    showSnackbar(
2974                            R.string.group_chat_will_make_your_jabber_id_public,
2975                            R.string.join,
2976                            acceptJoin);
2977                    break;
2978                default:
2979                    hideSnackbar();
2980                    break;
2981            }
2982        } else if (account.hasPendingPgpIntent(conversation)) {
2983            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2984        } else if (connection != null
2985                && connection.getFeatures().blocking()
2986                && conversation.countMessages() != 0
2987                && !conversation.isBlocked()
2988                && conversation.isWithStranger()) {
2989            showSnackbar(
2990                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2991        } else {
2992            hideSnackbar();
2993        }
2994    }
2995
2996    @Override
2997    public void refresh() {
2998        if (this.binding == null) {
2999            Log.d(
3000                    Config.LOGTAG,
3001                    "ConversationFragment.refresh() skipped updated because view binding was null");
3002            return;
3003        }
3004        if (this.conversation != null
3005                && this.activity != null
3006                && this.activity.xmppConnectionService != null) {
3007            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
3008                activity.onConversationArchived(this.conversation);
3009                return;
3010            }
3011        }
3012        this.refresh(true);
3013    }
3014
3015    private void refresh(boolean notifyConversationRead) {
3016        synchronized (this.messageList) {
3017            if (this.conversation != null) {
3018                conversation.populateWithMessages(this.messageList);
3019                updateSnackBar(conversation);
3020                updateStatusMessages();
3021                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
3022                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
3023                    binding.unreadCountCustomView.setUnreadCount(
3024                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
3025                }
3026                this.messageListAdapter.notifyDataSetChanged();
3027                updateChatMsgHint();
3028                if (notifyConversationRead && activity != null) {
3029                    binding.messagesView.post(this::fireReadEvent);
3030                }
3031                updateSendButton();
3032                updateEditablity();
3033            }
3034        }
3035    }
3036
3037    protected void messageSent() {
3038        mSendingPgpMessage.set(false);
3039        this.binding.textinput.setText("");
3040        if (conversation.setCorrectingMessage(null)) {
3041            this.binding.textinput.append(conversation.getDraftMessage());
3042            conversation.setDraftMessage(null);
3043        }
3044        storeNextMessage();
3045        updateChatMsgHint();
3046        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
3047        final boolean prefScrollToBottom =
3048                p.getBoolean(
3049                        "scroll_to_bottom",
3050                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
3051        if (prefScrollToBottom || scrolledToBottom()) {
3052            new Handler()
3053                    .post(
3054                            () -> {
3055                                int size = messageList.size();
3056                                this.binding.messagesView.setSelection(size - 1);
3057                            });
3058        }
3059    }
3060
3061    private boolean storeNextMessage() {
3062        return storeNextMessage(this.binding.textinput.getText().toString());
3063    }
3064
3065    private boolean storeNextMessage(String msg) {
3066        final boolean participating =
3067                conversation.getMode() == Conversational.MODE_SINGLE
3068                        || conversation.getMucOptions().participating();
3069        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
3070                && participating
3071                && this.conversation.setNextMessage(msg)) {
3072            this.activity.xmppConnectionService.updateConversation(this.conversation);
3073            return true;
3074        }
3075        return false;
3076    }
3077
3078    public void doneSendingPgpMessage() {
3079        mSendingPgpMessage.set(false);
3080    }
3081
3082    public long getMaxHttpUploadSize(Conversation conversation) {
3083        final XmppConnection connection = conversation.getAccount().getXmppConnection();
3084        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
3085    }
3086
3087    private void updateEditablity() {
3088        boolean canWrite =
3089                this.conversation.getMode() == Conversation.MODE_SINGLE
3090                        || this.conversation.getMucOptions().participating()
3091                        || this.conversation.getNextCounterpart() != null;
3092        this.binding.textinput.setFocusable(canWrite);
3093        this.binding.textinput.setFocusableInTouchMode(canWrite);
3094        this.binding.textSendButton.setEnabled(canWrite);
3095        this.binding.textinput.setCursorVisible(canWrite);
3096        this.binding.textinput.setEnabled(canWrite);
3097    }
3098
3099    public void updateSendButton() {
3100        boolean hasAttachments =
3101                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
3102        final Conversation c = this.conversation;
3103        final Presence.Status status;
3104        final String text =
3105                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
3106        final SendButtonAction action;
3107        if (hasAttachments) {
3108            action = SendButtonAction.TEXT;
3109        } else {
3110            action = SendButtonTool.getAction(getActivity(), c, text);
3111        }
3112        if (c.getAccount().getStatus() == Account.State.ONLINE) {
3113            if (activity != null
3114                    && activity.xmppConnectionService != null
3115                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
3116                status = Presence.Status.OFFLINE;
3117            } else if (c.getMode() == Conversation.MODE_SINGLE) {
3118                status = c.getContact().getShownStatus();
3119            } else {
3120                status =
3121                        c.getMucOptions().online()
3122                                ? Presence.Status.ONLINE
3123                                : Presence.Status.OFFLINE;
3124            }
3125        } else {
3126            status = Presence.Status.OFFLINE;
3127        }
3128        this.binding.textSendButton.setTag(action);
3129        final Activity activity = getActivity();
3130        if (activity != null) {
3131            this.binding.textSendButton.setImageResource(
3132                    SendButtonTool.getSendButtonImageResource(activity, action, status));
3133        }
3134
3135        if (hasAttachments || binding.textinput.getText().length() > 0) {
3136            binding.conversationViewPager.setCurrentItem(0);
3137        }
3138    }
3139
3140    protected void updateStatusMessages() {
3141        DateSeparator.addAll(this.messageList);
3142        if (showLoadMoreMessages(conversation)) {
3143            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
3144        }
3145        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3146            ChatState state = conversation.getIncomingChatState();
3147            if (state == ChatState.COMPOSING) {
3148                this.messageList.add(
3149                        Message.createStatusMessage(
3150                                conversation,
3151                                getString(R.string.contact_is_typing, conversation.getName())));
3152            } else if (state == ChatState.PAUSED) {
3153                this.messageList.add(
3154                        Message.createStatusMessage(
3155                                conversation,
3156                                getString(
3157                                        R.string.contact_has_stopped_typing,
3158                                        conversation.getName())));
3159            } else {
3160                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3161                    final Message message = this.messageList.get(i);
3162                    if (message.getType() != Message.TYPE_STATUS) {
3163                        if (message.getStatus() == Message.STATUS_RECEIVED) {
3164                            return;
3165                        } else {
3166                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
3167                                this.messageList.add(
3168                                        i + 1,
3169                                        Message.createStatusMessage(
3170                                                conversation,
3171                                                getString(
3172                                                        R.string.contact_has_read_up_to_this_point,
3173                                                        conversation.getName())));
3174                                return;
3175                            }
3176                        }
3177                    }
3178                }
3179            }
3180        } else {
3181            final MucOptions mucOptions = conversation.getMucOptions();
3182            final List<MucOptions.User> allUsers = mucOptions.getUsers();
3183            final Set<ReadByMarker> addedMarkers = new HashSet<>();
3184            ChatState state = ChatState.COMPOSING;
3185            List<MucOptions.User> users =
3186                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3187            if (users.size() == 0) {
3188                state = ChatState.PAUSED;
3189                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3190            }
3191            if (mucOptions.isPrivateAndNonAnonymous()) {
3192                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3193                    final Set<ReadByMarker> markersForMessage =
3194                            messageList.get(i).getReadByMarkers();
3195                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3196                    for (ReadByMarker marker : markersForMessage) {
3197                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3198                            addedMarkers.add(
3199                                    marker); // may be put outside this condition. set should do
3200                                             // dedup anyway
3201                            MucOptions.User user = mucOptions.findUser(marker);
3202                            if (user != null && !users.contains(user)) {
3203                                shownMarkers.add(user);
3204                            }
3205                        }
3206                    }
3207                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3208                    final Message statusMessage;
3209                    final int size = shownMarkers.size();
3210                    if (size > 1) {
3211                        final String body;
3212                        if (size <= 4) {
3213                            body =
3214                                    getString(
3215                                            R.string.contacts_have_read_up_to_this_point,
3216                                            UIHelper.concatNames(shownMarkers));
3217                        } else if (ReadByMarker.allUsersRepresented(
3218                                allUsers, markersForMessage, markerForSender)) {
3219                            body = getString(R.string.everyone_has_read_up_to_this_point);
3220                        } else {
3221                            body =
3222                                    getString(
3223                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3224                                            UIHelper.concatNames(shownMarkers, 3),
3225                                            size - 3);
3226                        }
3227                        statusMessage = Message.createStatusMessage(conversation, body);
3228                        statusMessage.setCounterparts(shownMarkers);
3229                    } else if (size == 1) {
3230                        statusMessage =
3231                                Message.createStatusMessage(
3232                                        conversation,
3233                                        getString(
3234                                                R.string.contact_has_read_up_to_this_point,
3235                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3236                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3237                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3238                    } else {
3239                        statusMessage = null;
3240                    }
3241                    if (statusMessage != null) {
3242                        this.messageList.add(i + 1, statusMessage);
3243                    }
3244                    addedMarkers.add(markerForSender);
3245                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3246                        break;
3247                    }
3248                }
3249            }
3250            if (users.size() > 0) {
3251                Message statusMessage;
3252                if (users.size() == 1) {
3253                    MucOptions.User user = users.get(0);
3254                    int id =
3255                            state == ChatState.COMPOSING
3256                                    ? R.string.contact_is_typing
3257                                    : R.string.contact_has_stopped_typing;
3258                    statusMessage =
3259                            Message.createStatusMessage(
3260                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3261                    statusMessage.setTrueCounterpart(user.getRealJid());
3262                    statusMessage.setCounterpart(user.getFullJid());
3263                } else {
3264                    int id =
3265                            state == ChatState.COMPOSING
3266                                    ? R.string.contacts_are_typing
3267                                    : R.string.contacts_have_stopped_typing;
3268                    statusMessage =
3269                            Message.createStatusMessage(
3270                                    conversation, getString(id, UIHelper.concatNames(users)));
3271                    statusMessage.setCounterparts(users);
3272                }
3273                this.messageList.add(statusMessage);
3274            }
3275        }
3276    }
3277
3278    private void stopScrolling() {
3279        long now = SystemClock.uptimeMillis();
3280        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3281        binding.messagesView.dispatchTouchEvent(cancel);
3282    }
3283
3284    private boolean showLoadMoreMessages(final Conversation c) {
3285        if (activity == null || activity.xmppConnectionService == null) {
3286            return false;
3287        }
3288        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3289        final MessageArchiveService service =
3290                activity.xmppConnectionService.getMessageArchiveService();
3291        return mam
3292                && (c.getLastClearHistory().getTimestamp() != 0
3293                        || (c.countMessages() == 0
3294                                && c.messagesLoaded.get()
3295                                && c.hasMessagesLeftOnServer()
3296                                && !service.queryInProgress(c)));
3297    }
3298
3299    private boolean hasMamSupport(final Conversation c) {
3300        if (c.getMode() == Conversation.MODE_SINGLE) {
3301            final XmppConnection connection = c.getAccount().getXmppConnection();
3302            return connection != null && connection.getFeatures().mam();
3303        } else {
3304            return c.getMucOptions().mamSupport();
3305        }
3306    }
3307
3308    protected void showSnackbar(
3309            final int message, final int action, final OnClickListener clickListener) {
3310        showSnackbar(message, action, clickListener, null);
3311    }
3312
3313    protected void showSnackbar(
3314            final int message,
3315            final int action,
3316            final OnClickListener clickListener,
3317            final View.OnLongClickListener longClickListener) {
3318        this.binding.snackbar.setVisibility(View.VISIBLE);
3319        this.binding.snackbar.setOnClickListener(null);
3320        this.binding.snackbarMessage.setText(message);
3321        this.binding.snackbarMessage.setOnClickListener(null);
3322        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3323        if (action != 0) {
3324            this.binding.snackbarAction.setText(action);
3325        }
3326        this.binding.snackbarAction.setOnClickListener(clickListener);
3327        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3328    }
3329
3330    protected void hideSnackbar() {
3331        this.binding.snackbar.setVisibility(View.GONE);
3332    }
3333
3334    protected void sendMessage(Message message) {
3335        activity.xmppConnectionService.sendMessage(message);
3336        messageSent();
3337    }
3338
3339    protected void sendPgpMessage(final Message message) {
3340        final XmppConnectionService xmppService = activity.xmppConnectionService;
3341        final Contact contact = message.getConversation().getContact();
3342        if (!activity.hasPgp()) {
3343            activity.showInstallPgpDialog();
3344            return;
3345        }
3346        if (conversation.getAccount().getPgpSignature() == null) {
3347            activity.announcePgp(
3348                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3349            return;
3350        }
3351        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3352            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3353        }
3354        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3355            if (contact.getPgpKeyId() != 0) {
3356                xmppService
3357                        .getPgpEngine()
3358                        .hasKey(
3359                                contact,
3360                                new UiCallback<Contact>() {
3361
3362                                    @Override
3363                                    public void userInputRequired(
3364                                            PendingIntent pi, Contact contact) {
3365                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3366                                    }
3367
3368                                    @Override
3369                                    public void success(Contact contact) {
3370                                        encryptTextMessage(message);
3371                                    }
3372
3373                                    @Override
3374                                    public void error(int error, Contact contact) {
3375                                        activity.runOnUiThread(
3376                                                () ->
3377                                                        Toast.makeText(
3378                                                                        activity,
3379                                                                        R.string
3380                                                                                .unable_to_connect_to_keychain,
3381                                                                        Toast.LENGTH_SHORT)
3382                                                                .show());
3383                                        mSendingPgpMessage.set(false);
3384                                    }
3385                                });
3386
3387            } else {
3388                showNoPGPKeyDialog(
3389                        false,
3390                        (dialog, which) -> {
3391                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3392                            xmppService.updateConversation(conversation);
3393                            message.setEncryption(Message.ENCRYPTION_NONE);
3394                            xmppService.sendMessage(message);
3395                            messageSent();
3396                        });
3397            }
3398        } else {
3399            if (conversation.getMucOptions().pgpKeysInUse()) {
3400                if (!conversation.getMucOptions().everybodyHasKeys()) {
3401                    Toast warning =
3402                            Toast.makeText(
3403                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3404                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3405                    warning.show();
3406                }
3407                encryptTextMessage(message);
3408            } else {
3409                showNoPGPKeyDialog(
3410                        true,
3411                        (dialog, which) -> {
3412                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3413                            message.setEncryption(Message.ENCRYPTION_NONE);
3414                            xmppService.updateConversation(conversation);
3415                            xmppService.sendMessage(message);
3416                            messageSent();
3417                        });
3418            }
3419        }
3420    }
3421
3422    public void encryptTextMessage(Message message) {
3423        activity.xmppConnectionService
3424                .getPgpEngine()
3425                .encrypt(
3426                        message,
3427                        new UiCallback<Message>() {
3428
3429                            @Override
3430                            public void userInputRequired(PendingIntent pi, Message message) {
3431                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3432                            }
3433
3434                            @Override
3435                            public void success(Message message) {
3436                                // TODO the following two call can be made before the callback
3437                                getActivity().runOnUiThread(() -> messageSent());
3438                            }
3439
3440                            @Override
3441                            public void error(final int error, Message message) {
3442                                getActivity()
3443                                        .runOnUiThread(
3444                                                () -> {
3445                                                    doneSendingPgpMessage();
3446                                                    Toast.makeText(
3447                                                                    getActivity(),
3448                                                                    error == 0
3449                                                                            ? R.string
3450                                                                                    .unable_to_connect_to_keychain
3451                                                                            : error,
3452                                                                    Toast.LENGTH_SHORT)
3453                                                            .show();
3454                                                });
3455                            }
3456                        });
3457    }
3458
3459    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
3460        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
3461        builder.setIconAttribute(android.R.attr.alertDialogIcon);
3462        if (plural) {
3463            builder.setTitle(getString(R.string.no_pgp_keys));
3464            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3465        } else {
3466            builder.setTitle(getString(R.string.no_pgp_key));
3467            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3468        }
3469        builder.setNegativeButton(getString(R.string.cancel), null);
3470        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3471        builder.create().show();
3472    }
3473
3474    public void appendText(String text, final boolean doNotAppend) {
3475        if (text == null) {
3476            return;
3477        }
3478        final Editable editable = this.binding.textinput.getText();
3479        String previous = editable == null ? "" : editable.toString();
3480        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3481            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3482                    .show();
3483            return;
3484        }
3485        if (UIHelper.isLastLineQuote(previous)) {
3486            text = '\n' + text;
3487        } else if (previous.length() != 0
3488                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3489            text = " " + text;
3490        }
3491        this.binding.textinput.append(text);
3492    }
3493
3494    @Override
3495    public boolean onEnterPressed(final boolean isCtrlPressed) {
3496        if (isCtrlPressed || enterIsSend()) {
3497            sendMessage();
3498            return true;
3499        }
3500        return false;
3501    }
3502
3503    private boolean enterIsSend() {
3504        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3505        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3506    }
3507
3508    public boolean onArrowUpCtrlPressed() {
3509        final Message lastEditableMessage =
3510                conversation == null ? null : conversation.getLastEditableMessage();
3511        if (lastEditableMessage != null) {
3512            correctMessage(lastEditableMessage);
3513            return true;
3514        } else {
3515            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3516                    .show();
3517            return false;
3518        }
3519    }
3520
3521    @Override
3522    public void onTypingStarted() {
3523        final XmppConnectionService service =
3524                activity == null ? null : activity.xmppConnectionService;
3525        if (service == null) {
3526            return;
3527        }
3528        final Account.State status = conversation.getAccount().getStatus();
3529        if (status == Account.State.ONLINE
3530                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3531            service.sendChatState(conversation);
3532        }
3533        runOnUiThread(this::updateSendButton);
3534    }
3535
3536    @Override
3537    public void onTypingStopped() {
3538        final XmppConnectionService service =
3539                activity == null ? null : activity.xmppConnectionService;
3540        if (service == null) {
3541            return;
3542        }
3543        final Account.State status = conversation.getAccount().getStatus();
3544        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3545            service.sendChatState(conversation);
3546        }
3547    }
3548
3549    @Override
3550    public void onTextDeleted() {
3551        final XmppConnectionService service =
3552                activity == null ? null : activity.xmppConnectionService;
3553        if (service == null) {
3554            return;
3555        }
3556        final Account.State status = conversation.getAccount().getStatus();
3557        if (status == Account.State.ONLINE
3558                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3559            service.sendChatState(conversation);
3560        }
3561        if (storeNextMessage()) {
3562            runOnUiThread(
3563                    () -> {
3564                        if (activity == null) {
3565                            return;
3566                        }
3567                        activity.onConversationsListItemUpdated();
3568                    });
3569        }
3570        runOnUiThread(this::updateSendButton);
3571    }
3572
3573    @Override
3574    public void onTextChanged() {
3575        if (conversation != null && conversation.getCorrectingMessage() != null) {
3576            runOnUiThread(this::updateSendButton);
3577        }
3578    }
3579
3580    @Override
3581    public boolean onTabPressed(boolean repeated) {
3582        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3583            return false;
3584        }
3585        if (repeated) {
3586            completionIndex++;
3587        } else {
3588            lastCompletionLength = 0;
3589            completionIndex = 0;
3590            final String content = this.binding.textinput.getText().toString();
3591            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3592            int start =
3593                    lastCompletionCursor > 0
3594                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3595                            : 0;
3596            firstWord = start == 0;
3597            incomplete = content.substring(start, lastCompletionCursor);
3598        }
3599        List<String> completions = new ArrayList<>();
3600        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3601            String name = user.getName();
3602            if (name != null && name.startsWith(incomplete)) {
3603                completions.add(name + (firstWord ? ": " : " "));
3604            }
3605        }
3606        Collections.sort(completions);
3607        if (completions.size() > completionIndex) {
3608            String completion = completions.get(completionIndex).substring(incomplete.length());
3609            this.binding
3610                    .textinput
3611                    .getEditableText()
3612                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3613            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3614            lastCompletionLength = completion.length();
3615        } else {
3616            completionIndex = -1;
3617            this.binding
3618                    .textinput
3619                    .getEditableText()
3620                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3621            lastCompletionLength = 0;
3622        }
3623        return true;
3624    }
3625
3626    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3627        try {
3628            getActivity()
3629                    .startIntentSenderForResult(
3630                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
3631        } catch (final SendIntentException ignored) {
3632        }
3633    }
3634
3635    @Override
3636    public void onBackendConnected() {
3637        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3638        String uuid = pendingConversationsUuid.pop();
3639        if (uuid != null) {
3640            if (!findAndReInitByUuidOrArchive(uuid)) {
3641                return;
3642            }
3643        } else {
3644            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3645                clearPending();
3646                activity.onConversationArchived(conversation);
3647                return;
3648            }
3649        }
3650        ActivityResult activityResult = postponedActivityResult.pop();
3651        if (activityResult != null) {
3652            handleActivityResult(activityResult);
3653        }
3654        clearPending();
3655    }
3656
3657    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3658        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3659        if (conversation == null) {
3660            clearPending();
3661            activity.onConversationArchived(null);
3662            return false;
3663        }
3664        reInit(conversation);
3665        ScrollState scrollState = pendingScrollState.pop();
3666        String lastMessageUuid = pendingLastMessageUuid.pop();
3667        List<Attachment> attachments = pendingMediaPreviews.pop();
3668        if (scrollState != null) {
3669            setScrollPosition(scrollState, lastMessageUuid);
3670        }
3671        if (attachments != null && attachments.size() > 0) {
3672            Log.d(Config.LOGTAG, "had attachments on restore");
3673            mediaPreviewAdapter.addMediaPreviews(attachments);
3674            toggleInputMethod();
3675        }
3676        return true;
3677    }
3678
3679    private void clearPending() {
3680        if (postponedActivityResult.clear()) {
3681            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3682            if (pendingTakePhotoUri.clear()) {
3683                Log.e(Config.LOGTAG, "cleared pending photo uri");
3684            }
3685        }
3686        if (pendingScrollState.clear()) {
3687            Log.e(Config.LOGTAG, "cleared scroll state");
3688        }
3689        if (pendingConversationsUuid.clear()) {
3690            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3691        }
3692        if (pendingMediaPreviews.clear()) {
3693            Log.e(Config.LOGTAG, "cleared pending media previews");
3694        }
3695    }
3696
3697    public Conversation getConversation() {
3698        return conversation;
3699    }
3700
3701    @Override
3702    public void onContactPictureLongClicked(View v, final Message message) {
3703        final String fingerprint;
3704        if (message.getEncryption() == Message.ENCRYPTION_PGP
3705                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3706            fingerprint = "pgp";
3707        } else {
3708            fingerprint = message.getFingerprint();
3709        }
3710        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3711        final Contact contact = message.getContact();
3712        if (message.getStatus() <= Message.STATUS_RECEIVED
3713                && (contact == null || !contact.isSelf())) {
3714            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3715                final Jid cp = message.getCounterpart();
3716                if (cp == null || cp.isBareJid()) {
3717                    return;
3718                }
3719                final Jid tcp = message.getTrueCounterpart();
3720                final User userByRealJid =
3721                        tcp != null
3722                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3723                                : null;
3724                final User user =
3725                        userByRealJid != null
3726                                ? userByRealJid
3727                                : conversation.getMucOptions().findUserByFullJid(cp);
3728                popupMenu.inflate(R.menu.muc_details_context);
3729                final Menu menu = popupMenu.getMenu();
3730                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3731                        activity, menu, conversation, user);
3732                popupMenu.setOnMenuItemClickListener(
3733                        menuItem ->
3734                                MucDetailsContextMenuHelper.onContextItemSelected(
3735                                        menuItem, user, activity, fingerprint));
3736            } else {
3737                popupMenu.inflate(R.menu.one_on_one_context);
3738                popupMenu.setOnMenuItemClickListener(
3739                        item -> {
3740                            switch (item.getItemId()) {
3741                                case R.id.action_contact_details:
3742                                    activity.switchToContactDetails(
3743                                            message.getContact(), fingerprint);
3744                                    break;
3745                                case R.id.action_show_qr_code:
3746                                    activity.showQrCode(
3747                                            "xmpp:"
3748                                                    + message.getContact()
3749                                                            .getJid()
3750                                                            .asBareJid()
3751                                                            .toEscapedString());
3752                                    break;
3753                            }
3754                            return true;
3755                        });
3756            }
3757        } else {
3758            popupMenu.inflate(R.menu.account_context);
3759            final Menu menu = popupMenu.getMenu();
3760            menu.findItem(R.id.action_manage_accounts)
3761                    .setVisible(QuickConversationsService.isConversations());
3762            popupMenu.setOnMenuItemClickListener(
3763                    item -> {
3764                        final XmppActivity activity = this.activity;
3765                        if (activity == null) {
3766                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3767                            return true;
3768                        }
3769                        switch (item.getItemId()) {
3770                            case R.id.action_show_qr_code:
3771                                activity.showQrCode(conversation.getAccount().getShareableUri());
3772                                break;
3773                            case R.id.action_account_details:
3774                                activity.switchToAccount(
3775                                        message.getConversation().getAccount(), fingerprint);
3776                                break;
3777                            case R.id.action_manage_accounts:
3778                                AccountUtils.launchManageAccounts(activity);
3779                                break;
3780                        }
3781                        return true;
3782                    });
3783        }
3784        popupMenu.show();
3785    }
3786
3787    @Override
3788    public void onContactPictureClicked(Message message) {
3789        setThread(message.getThread());
3790        conversation.setUserSelectedThread(true);
3791
3792        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3793        if (received) {
3794            if (message.getConversation() instanceof Conversation
3795                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3796                Jid tcp = message.getTrueCounterpart();
3797                Jid user = message.getCounterpart();
3798                if (user != null && !user.isBareJid()) {
3799                    final MucOptions mucOptions =
3800                            ((Conversation) message.getConversation()).getMucOptions();
3801                    if (mucOptions.participating()
3802                            || ((Conversation) message.getConversation()).getNextCounterpart()
3803                                    != null) {
3804                        if (!mucOptions.isUserInRoom(user)
3805                                && mucOptions.findUserByRealJid(
3806                                                tcp == null ? null : tcp.asBareJid())
3807                                        == null) {
3808                            Toast.makeText(
3809                                            getActivity(),
3810                                            activity.getString(
3811                                                    R.string.user_has_left_conference,
3812                                                    user.getResource()),
3813                                            Toast.LENGTH_SHORT)
3814                                    .show();
3815                        }
3816                        highlightInConference(user.getResource());
3817                    } else {
3818                        Toast.makeText(
3819                                        getActivity(),
3820                                        R.string.you_are_not_participating,
3821                                        Toast.LENGTH_SHORT)
3822                                .show();
3823                    }
3824                }
3825            }
3826        }
3827    }
3828
3829    private Activity requireActivity() {
3830        final Activity activity = getActivity();
3831        if (activity == null) {
3832            throw new IllegalStateException("Activity not attached");
3833        }
3834        return activity;
3835    }
3836}