ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
   8import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
   9
  10import android.Manifest;
  11import android.annotation.SuppressLint;
  12import android.app.Activity;
  13import android.app.Fragment;
  14import android.app.FragmentManager;
  15import android.app.PendingIntent;
  16import android.content.ActivityNotFoundException;
  17import android.content.Context;
  18import android.content.DialogInterface;
  19import android.content.Intent;
  20import android.content.IntentSender.SendIntentException;
  21import android.content.SharedPreferences;
  22import android.content.pm.PackageManager;
  23import android.net.Uri;
  24import android.os.Build;
  25import android.os.Bundle;
  26import android.os.Environment;
  27import android.os.Handler;
  28import android.os.storage.StorageManager;
  29import android.os.SystemClock;
  30import android.preference.PreferenceManager;
  31import android.provider.MediaStore;
  32import android.text.Editable;
  33import android.text.TextUtils;
  34import android.util.Log;
  35import android.view.ContextMenu;
  36import android.view.ContextMenu.ContextMenuInfo;
  37import android.view.Gravity;
  38import android.view.LayoutInflater;
  39import android.view.Menu;
  40import android.view.MenuInflater;
  41import android.view.MenuItem;
  42import android.view.MotionEvent;
  43import android.view.View;
  44import android.view.View.OnClickListener;
  45import android.view.ViewGroup;
  46import android.view.inputmethod.EditorInfo;
  47import android.view.inputmethod.InputMethodManager;
  48import android.widget.AbsListView;
  49import android.widget.AbsListView.OnScrollListener;
  50import android.widget.AdapterView;
  51import android.widget.AdapterView.AdapterContextMenuInfo;
  52import android.widget.CheckBox;
  53import android.widget.ListView;
  54import android.widget.PopupMenu;
  55import android.widget.TextView.OnEditorActionListener;
  56import android.widget.Toast;
  57
  58import androidx.activity.OnBackPressedCallback;
  59import androidx.annotation.IdRes;
  60import androidx.annotation.NonNull;
  61import androidx.annotation.Nullable;
  62import androidx.annotation.StringRes;
  63import androidx.appcompat.app.AlertDialog;
  64import androidx.core.view.inputmethod.InputConnectionCompat;
  65import androidx.core.view.inputmethod.InputContentInfoCompat;
  66import androidx.databinding.DataBindingUtil;
  67import androidx.documentfile.provider.DocumentFile;
  68import androidx.viewpager.widget.PagerAdapter;
  69import androidx.viewpager.widget.ViewPager;
  70
  71import com.cheogram.android.BobTransfer;
  72
  73import com.google.common.base.Optional;
  74import com.google.common.collect.ImmutableList;
  75
  76import org.jetbrains.annotations.NotNull;
  77
  78import java.io.File;
  79import java.net.URISyntaxException;
  80import java.util.ArrayList;
  81import java.util.Arrays;
  82import java.util.Collection;
  83import java.util.Collections;
  84import java.util.HashSet;
  85import java.util.Iterator;
  86import java.util.List;
  87import java.util.Map;
  88import java.util.Set;
  89import java.util.UUID;
  90import java.util.concurrent.atomic.AtomicBoolean;
  91
  92import eu.siacs.conversations.Config;
  93import eu.siacs.conversations.R;
  94import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  95import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  96import eu.siacs.conversations.databinding.FragmentConversationBinding;
  97import eu.siacs.conversations.entities.Account;
  98import eu.siacs.conversations.entities.Blockable;
  99import eu.siacs.conversations.entities.Contact;
 100import eu.siacs.conversations.entities.Conversation;
 101import eu.siacs.conversations.entities.Conversational;
 102import eu.siacs.conversations.entities.DownloadableFile;
 103import eu.siacs.conversations.entities.Message;
 104import eu.siacs.conversations.entities.MucOptions;
 105import eu.siacs.conversations.entities.MucOptions.User;
 106import eu.siacs.conversations.entities.Presence;
 107import eu.siacs.conversations.entities.Presences;
 108import eu.siacs.conversations.entities.ReadByMarker;
 109import eu.siacs.conversations.entities.Transferable;
 110import eu.siacs.conversations.entities.TransferablePlaceholder;
 111import eu.siacs.conversations.http.HttpDownloadConnection;
 112import eu.siacs.conversations.persistance.FileBackend;
 113import eu.siacs.conversations.services.MessageArchiveService;
 114import eu.siacs.conversations.services.QuickConversationsService;
 115import eu.siacs.conversations.services.XmppConnectionService;
 116import eu.siacs.conversations.ui.adapter.CommandAdapter;
 117import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
 118import eu.siacs.conversations.ui.adapter.MessageAdapter;
 119import eu.siacs.conversations.ui.util.ActivityResult;
 120import eu.siacs.conversations.ui.util.Attachment;
 121import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
 122import eu.siacs.conversations.ui.util.DateSeparator;
 123import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 124import eu.siacs.conversations.ui.util.ListViewUtils;
 125import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 126import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 127import eu.siacs.conversations.ui.util.PendingItem;
 128import eu.siacs.conversations.ui.util.PresenceSelector;
 129import eu.siacs.conversations.ui.util.ScrollState;
 130import eu.siacs.conversations.ui.util.SendButtonAction;
 131import eu.siacs.conversations.ui.util.SendButtonTool;
 132import eu.siacs.conversations.ui.util.ShareUtil;
 133import eu.siacs.conversations.ui.util.ViewUtil;
 134import eu.siacs.conversations.ui.widget.EditMessage;
 135import eu.siacs.conversations.utils.AccountUtils;
 136import eu.siacs.conversations.utils.Compatibility;
 137import eu.siacs.conversations.utils.GeoHelper;
 138import eu.siacs.conversations.utils.MessageUtils;
 139import eu.siacs.conversations.utils.NickValidityChecker;
 140import eu.siacs.conversations.utils.Patterns;
 141import eu.siacs.conversations.utils.PermissionUtils;
 142import eu.siacs.conversations.utils.QuickLoader;
 143import eu.siacs.conversations.utils.StylingHelper;
 144import eu.siacs.conversations.utils.TimeFrameUtils;
 145import eu.siacs.conversations.utils.UIHelper;
 146import eu.siacs.conversations.xml.Element;
 147import eu.siacs.conversations.xml.Namespace;
 148import eu.siacs.conversations.xmpp.Jid;
 149import eu.siacs.conversations.xmpp.XmppConnection;
 150import eu.siacs.conversations.xmpp.chatstate.ChatState;
 151import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 152import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 153import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 154import eu.siacs.conversations.xmpp.jingle.Media;
 155import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 156import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 157import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 158
 159public class ConversationFragment extends XmppFragment
 160        implements EditMessage.KeyboardListener,
 161                MessageAdapter.OnContactPictureLongClicked,
 162                MessageAdapter.OnContactPictureClicked {
 163
 164    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 165    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 166    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 167    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 168    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 169    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 170    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 171    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 172    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 173    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 174    public static final int REQUEST_SAVE_STICKER = 0x215;
 175    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 176    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 177    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 178    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 179    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 180    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 181    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 182
 183    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 184    public static final String STATE_CONVERSATION_UUID =
 185            ConversationFragment.class.getName() + ".uuid";
 186    public static final String STATE_SCROLL_POSITION =
 187            ConversationFragment.class.getName() + ".scroll_position";
 188    public static final String STATE_PHOTO_URI =
 189            ConversationFragment.class.getName() + ".media_previews";
 190    public static final String STATE_MEDIA_PREVIEWS =
 191            ConversationFragment.class.getName() + ".take_photo_uri";
 192    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 193
 194    private final List<Message> messageList = new ArrayList<>();
 195    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 196    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 197    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 198    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 199    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 200    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 201    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 202    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 203    public Uri mPendingEditorContent = null;
 204    protected MessageAdapter messageListAdapter;
 205    protected CommandAdapter commandAdapter;
 206    private MediaPreviewAdapter mediaPreviewAdapter;
 207    private String lastMessageUuid = null;
 208    private Conversation conversation;
 209    private FragmentConversationBinding binding;
 210    private Toast messageLoaderToast;
 211    private ConversationsActivity activity;
 212    private boolean reInitRequiredOnStart = true;
 213    private int identiconWidth = -1;
 214    private File savingAsSticker = null;
 215    private String savingAsStickerName = null;
 216    private final OnClickListener clickToMuc =
 217            new OnClickListener() {
 218
 219                @Override
 220                public void onClick(View v) {
 221                    ConferenceDetailsActivity.open(getActivity(), conversation);
 222                }
 223            };
 224    private final OnClickListener leaveMuc =
 225            new OnClickListener() {
 226
 227                @Override
 228                public void onClick(View v) {
 229                    activity.xmppConnectionService.archiveConversation(conversation);
 230                }
 231            };
 232    private final OnClickListener joinMuc =
 233            new OnClickListener() {
 234
 235                @Override
 236                public void onClick(View v) {
 237                    activity.xmppConnectionService.joinMuc(conversation);
 238                }
 239            };
 240
 241    private final OnClickListener acceptJoin =
 242            new OnClickListener() {
 243                @Override
 244                public void onClick(View v) {
 245                    conversation.setAttribute("accept_non_anonymous", true);
 246                    activity.xmppConnectionService.updateConversation(conversation);
 247                    activity.xmppConnectionService.joinMuc(conversation);
 248                }
 249            };
 250
 251    private final OnClickListener enterPassword =
 252            new OnClickListener() {
 253
 254                @Override
 255                public void onClick(View v) {
 256                    MucOptions muc = conversation.getMucOptions();
 257                    String password = muc.getPassword();
 258                    if (password == null) {
 259                        password = "";
 260                    }
 261                    activity.quickPasswordEdit(
 262                            password,
 263                            value -> {
 264                                activity.xmppConnectionService.providePasswordForMuc(
 265                                        conversation, value);
 266                                return null;
 267                            });
 268                }
 269            };
 270    private final OnScrollListener mOnScrollListener =
 271            new OnScrollListener() {
 272
 273                @Override
 274                public void onScrollStateChanged(AbsListView view, int scrollState) {
 275                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 276                        updateThreadFromLastMessage();
 277                        fireReadEvent();
 278                    }
 279                }
 280
 281                @Override
 282                public void onScroll(
 283                        final AbsListView view,
 284                        int firstVisibleItem,
 285                        int visibleItemCount,
 286                        int totalItemCount) {
 287                    toggleScrollDownButton(view);
 288                    synchronized (ConversationFragment.this.messageList) {
 289                        if (firstVisibleItem < 5
 290                                && conversation != null
 291                                && conversation.messagesLoaded.compareAndSet(true, false)
 292                                && messageList.size() > 0) {
 293                            long timestamp;
 294                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 295                                    && messageList.size() >= 2) {
 296                                timestamp = messageList.get(1).getTimeSent();
 297                            } else {
 298                                timestamp = messageList.get(0).getTimeSent();
 299                            }
 300                            activity.xmppConnectionService.loadMoreMessages(
 301                                    conversation,
 302                                    timestamp,
 303                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 304                                        @Override
 305                                        public void onMoreMessagesLoaded(
 306                                                final int c, final Conversation conversation) {
 307                                            if (ConversationFragment.this.conversation
 308                                                    != conversation) {
 309                                                conversation.messagesLoaded.set(true);
 310                                                return;
 311                                            }
 312                                            runOnUiThread(
 313                                                    () -> {
 314                                                        synchronized (messageList) {
 315                                                            final int oldPosition =
 316                                                                    binding.messagesView
 317                                                                            .getFirstVisiblePosition();
 318                                                            Message message = null;
 319                                                            int childPos;
 320                                                            for (childPos = 0;
 321                                                                    childPos + oldPosition
 322                                                                            < messageList.size();
 323                                                                    ++childPos) {
 324                                                                message =
 325                                                                        messageList.get(
 326                                                                                oldPosition
 327                                                                                        + childPos);
 328                                                                if (message.getType()
 329                                                                        != Message.TYPE_STATUS) {
 330                                                                    break;
 331                                                                }
 332                                                            }
 333                                                            final String uuid =
 334                                                                    message != null
 335                                                                            ? message.getUuid()
 336                                                                            : null;
 337                                                            View v =
 338                                                                    binding.messagesView.getChildAt(
 339                                                                            childPos);
 340                                                            final int pxOffset =
 341                                                                    (v == null) ? 0 : v.getTop();
 342                                                            ConversationFragment.this.conversation
 343                                                                    .populateWithMessages(
 344                                                                            ConversationFragment
 345                                                                                    .this
 346                                                                                    .messageList);
 347                                                            try {
 348                                                                updateStatusMessages();
 349                                                            } catch (IllegalStateException e) {
 350                                                                Log.d(
 351                                                                        Config.LOGTAG,
 352                                                                        "caught illegal state exception while updating status messages");
 353                                                            }
 354                                                            messageListAdapter
 355                                                                    .notifyDataSetChanged();
 356                                                            int pos =
 357                                                                    Math.max(
 358                                                                            getIndexOf(
 359                                                                                    uuid,
 360                                                                                    messageList),
 361                                                                            0);
 362                                                            binding.messagesView
 363                                                                    .setSelectionFromTop(
 364                                                                            pos, pxOffset);
 365                                                            if (messageLoaderToast != null) {
 366                                                                messageLoaderToast.cancel();
 367                                                            }
 368                                                            conversation.messagesLoaded.set(true);
 369                                                        }
 370                                                    });
 371                                        }
 372
 373                                        @Override
 374                                        public void informUser(final int resId) {
 375
 376                                            runOnUiThread(
 377                                                    () -> {
 378                                                        if (messageLoaderToast != null) {
 379                                                            messageLoaderToast.cancel();
 380                                                        }
 381                                                        if (ConversationFragment.this.conversation
 382                                                                != conversation) {
 383                                                            return;
 384                                                        }
 385                                                        messageLoaderToast =
 386                                                                Toast.makeText(
 387                                                                        view.getContext(),
 388                                                                        resId,
 389                                                                        Toast.LENGTH_LONG);
 390                                                        messageLoaderToast.show();
 391                                                    });
 392                                        }
 393                                    });
 394                        }
 395                    }
 396                }
 397            };
 398    private final EditMessage.OnCommitContentListener mEditorContentListener =
 399            new EditMessage.OnCommitContentListener() {
 400                @Override
 401                public boolean onCommitContent(
 402                        InputContentInfoCompat inputContentInfo,
 403                        int flags,
 404                        Bundle opts,
 405                        String[] contentMimeTypes) {
 406                    // try to get permission to read the image, if applicable
 407                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 408                            != 0) {
 409                        try {
 410                            inputContentInfo.requestPermission();
 411                        } catch (Exception e) {
 412                            Log.e(
 413                                    Config.LOGTAG,
 414                                    "InputContentInfoCompat#requestPermission() failed.",
 415                                    e);
 416                            Toast.makeText(
 417                                            getActivity(),
 418                                            activity.getString(
 419                                                    R.string.no_permission_to_access_x,
 420                                                    inputContentInfo.getDescription()),
 421                                            Toast.LENGTH_LONG)
 422                                    .show();
 423                            return false;
 424                        }
 425                    }
 426                    if (hasPermissions(
 427                            REQUEST_ADD_EDITOR_CONTENT,
 428                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 429                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 430                    } else {
 431                        mPendingEditorContent = inputContentInfo.getContentUri();
 432                    }
 433                    return true;
 434                }
 435            };
 436    private Message selectedMessage;
 437    private final OnClickListener mEnableAccountListener =
 438            new OnClickListener() {
 439                @Override
 440                public void onClick(View v) {
 441                    final Account account = conversation == null ? null : conversation.getAccount();
 442                    if (account != null) {
 443                        account.setOption(Account.OPTION_DISABLED, false);
 444                        activity.xmppConnectionService.updateAccount(account);
 445                    }
 446                }
 447            };
 448    private final OnClickListener mUnblockClickListener =
 449            new OnClickListener() {
 450                @Override
 451                public void onClick(final View v) {
 452                    v.post(() -> v.setVisibility(View.INVISIBLE));
 453                    if (conversation.isDomainBlocked()) {
 454                        BlockContactDialog.show(activity, conversation);
 455                    } else {
 456                        unblockConversation(conversation);
 457                    }
 458                }
 459            };
 460    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 461    private final OnClickListener mAddBackClickListener =
 462            new OnClickListener() {
 463
 464                @Override
 465                public void onClick(View v) {
 466                    final Contact contact = conversation == null ? null : conversation.getContact();
 467                    if (contact != null) {
 468                        activity.xmppConnectionService.createContact(contact, true);
 469                        activity.switchToContactDetails(contact);
 470                    }
 471                }
 472            };
 473    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 474    private final OnClickListener mAllowPresenceSubscription =
 475            new OnClickListener() {
 476                @Override
 477                public void onClick(View v) {
 478                    final Contact contact = conversation == null ? null : conversation.getContact();
 479                    if (contact != null) {
 480                        activity.xmppConnectionService.sendPresencePacket(
 481                                contact.getAccount(),
 482                                activity.xmppConnectionService
 483                                        .getPresenceGenerator()
 484                                        .sendPresenceUpdatesTo(contact));
 485                        hideSnackbar();
 486                    }
 487                }
 488            };
 489    protected OnClickListener clickToDecryptListener =
 490            new OnClickListener() {
 491
 492                @Override
 493                public void onClick(View v) {
 494                    PendingIntent pendingIntent =
 495                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 496                    if (pendingIntent != null) {
 497                        try {
 498                            getActivity()
 499                                    .startIntentSenderForResult(
 500                                            pendingIntent.getIntentSender(),
 501                                            REQUEST_DECRYPT_PGP,
 502                                            null,
 503                                            0,
 504                                            0,
 505                                            0);
 506                        } catch (SendIntentException e) {
 507                            Toast.makeText(
 508                                            getActivity(),
 509                                            R.string.unable_to_connect_to_keychain,
 510                                            Toast.LENGTH_SHORT)
 511                                    .show();
 512                            conversation
 513                                    .getAccount()
 514                                    .getPgpDecryptionService()
 515                                    .continueDecryption(true);
 516                        }
 517                    }
 518                    updateSnackBar(conversation);
 519                }
 520            };
 521    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 522    private final OnEditorActionListener mEditorActionListener =
 523            (v, actionId, event) -> {
 524                if (actionId == EditorInfo.IME_ACTION_SEND) {
 525                    InputMethodManager imm =
 526                            (InputMethodManager)
 527                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 528                    if (imm != null && imm.isFullscreenMode()) {
 529                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 530                    }
 531                    sendMessage();
 532                    return true;
 533                } else {
 534                    return false;
 535                }
 536            };
 537    private final OnClickListener mScrollButtonListener =
 538            new OnClickListener() {
 539
 540                @Override
 541                public void onClick(View v) {
 542                    stopScrolling();
 543                    setSelection(binding.messagesView.getCount() - 1, true);
 544                }
 545            };
 546    private final OnClickListener mSendButtonListener =
 547            new OnClickListener() {
 548
 549                @Override
 550                public void onClick(View v) {
 551                    Object tag = v.getTag();
 552                    if (tag instanceof SendButtonAction) {
 553                        SendButtonAction action = (SendButtonAction) tag;
 554                        switch (action) {
 555                            case TAKE_PHOTO:
 556                            case RECORD_VIDEO:
 557                            case SEND_LOCATION:
 558                            case RECORD_VOICE:
 559                            case CHOOSE_PICTURE:
 560                                attachFile(action.toChoice());
 561                                break;
 562                            case CANCEL:
 563                                if (conversation != null) {
 564                                    if (conversation.setCorrectingMessage(null)) {
 565                                        binding.textinput.setText("");
 566                                        binding.textinput.append(conversation.getDraftMessage());
 567                                        conversation.setDraftMessage(null);
 568                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 569                                        conversation.setNextCounterpart(null);
 570                                        binding.textinput.setText("");
 571                                    } else {
 572                                        binding.textinput.setText("");
 573                                    }
 574                                    updateChatMsgHint();
 575                                    updateSendButton();
 576                                    updateEditablity();
 577                                }
 578                                break;
 579                            default:
 580                                sendMessage();
 581                        }
 582                    } else {
 583                        sendMessage();
 584                    }
 585                }
 586            };
 587    private OnBackPressedCallback backPressedLeaveSingleThread = new OnBackPressedCallback(false) {
 588        @Override
 589        public void handleOnBackPressed() {
 590            conversation.setLockThread(false);
 591            this.setEnabled(false);
 592            conversation.setUserSelectedThread(false);
 593            refresh();
 594            updateThreadFromLastMessage();
 595        }
 596    };
 597    private int completionIndex = 0;
 598    private int lastCompletionLength = 0;
 599    private String incomplete;
 600    private int lastCompletionCursor;
 601    private boolean firstWord = false;
 602    private Message mPendingDownloadableMessage;
 603
 604    private static ConversationFragment findConversationFragment(Activity activity) {
 605        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 606        if (fragment instanceof ConversationFragment) {
 607            return (ConversationFragment) fragment;
 608        }
 609        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 610        if (fragment instanceof ConversationFragment) {
 611            return (ConversationFragment) fragment;
 612        }
 613        return null;
 614    }
 615
 616    public static void startStopPending(Activity activity) {
 617        ConversationFragment fragment = findConversationFragment(activity);
 618        if (fragment != null) {
 619            fragment.messageListAdapter.startStopPending();
 620        }
 621    }
 622
 623    public static void downloadFile(Activity activity, Message message) {
 624        ConversationFragment fragment = findConversationFragment(activity);
 625        if (fragment != null) {
 626            fragment.startDownloadable(message);
 627        }
 628    }
 629
 630    public static void registerPendingMessage(Activity activity, Message message) {
 631        ConversationFragment fragment = findConversationFragment(activity);
 632        if (fragment != null) {
 633            fragment.pendingMessage.push(message);
 634        }
 635    }
 636
 637    public static void openPendingMessage(Activity activity) {
 638        ConversationFragment fragment = findConversationFragment(activity);
 639        if (fragment != null) {
 640            Message message = fragment.pendingMessage.pop();
 641            if (message != null) {
 642                fragment.messageListAdapter.openDownloadable(message);
 643            }
 644        }
 645    }
 646
 647    public static Conversation getConversation(Activity activity) {
 648        return getConversation(activity, R.id.secondary_fragment);
 649    }
 650
 651    private static Conversation getConversation(Activity activity, @IdRes int res) {
 652        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 653        if (fragment instanceof ConversationFragment) {
 654            return ((ConversationFragment) fragment).getConversation();
 655        } else {
 656            return null;
 657        }
 658    }
 659
 660    public static ConversationFragment get(Activity activity) {
 661        FragmentManager fragmentManager = activity.getFragmentManager();
 662        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 663        if (fragment instanceof ConversationFragment) {
 664            return (ConversationFragment) fragment;
 665        } else {
 666            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 667            return fragment instanceof ConversationFragment
 668                    ? (ConversationFragment) fragment
 669                    : null;
 670        }
 671    }
 672
 673    public static Conversation getConversationReliable(Activity activity) {
 674        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 675        if (conversation != null) {
 676            return conversation;
 677        }
 678        return getConversation(activity, R.id.main_fragment);
 679    }
 680
 681    private static boolean scrolledToBottom(AbsListView listView) {
 682        final int count = listView.getCount();
 683        if (count == 0) {
 684            return true;
 685        } else if (listView.getLastVisiblePosition() == count - 1) {
 686            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 687            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 688        } else {
 689            return false;
 690        }
 691    }
 692
 693    private void toggleScrollDownButton() {
 694        toggleScrollDownButton(binding.messagesView);
 695    }
 696
 697    private void toggleScrollDownButton(AbsListView listView) {
 698        if (conversation == null) {
 699            return;
 700        }
 701        if (scrolledToBottom(listView)) {
 702            lastMessageUuid = null;
 703            hideUnreadMessagesCount();
 704        } else {
 705            binding.scrollToBottomButton.setEnabled(true);
 706            binding.scrollToBottomButton.show();
 707            if (lastMessageUuid == null) {
 708                lastMessageUuid = conversation.getLatestMessage().getUuid();
 709            }
 710            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 711                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 712            }
 713        }
 714    }
 715
 716    private int getIndexOf(String uuid, List<Message> messages) {
 717        if (uuid == null) {
 718            return messages.size() - 1;
 719        }
 720        for (int i = 0; i < messages.size(); ++i) {
 721            if (uuid.equals(messages.get(i).getUuid())) {
 722                return i;
 723            } else {
 724                Message next = messages.get(i);
 725                while (next != null && next.wasMergedIntoPrevious()) {
 726                    if (uuid.equals(next.getUuid())) {
 727                        return i;
 728                    }
 729                    next = next.next();
 730                }
 731            }
 732        }
 733        return -1;
 734    }
 735
 736    private ScrollState getScrollPosition() {
 737        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 738        if (listView == null
 739                || listView.getCount() == 0
 740                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 741            return null;
 742        } else {
 743            final int pos = listView.getFirstVisiblePosition();
 744            final View view = listView.getChildAt(0);
 745            if (view == null) {
 746                return null;
 747            } else {
 748                return new ScrollState(pos, view.getTop());
 749            }
 750        }
 751    }
 752
 753    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 754        if (scrollPosition != null) {
 755
 756            this.lastMessageUuid = lastMessageUuid;
 757            if (lastMessageUuid != null) {
 758                binding.unreadCountCustomView.setUnreadCount(
 759                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 760            }
 761            // TODO maybe this needs a 'post'
 762            this.binding.messagesView.setSelectionFromTop(
 763                    scrollPosition.position, scrollPosition.offset);
 764            toggleScrollDownButton();
 765        }
 766    }
 767
 768    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 769        if (conversation == null) {
 770            return;
 771        }
 772        activity.xmppConnectionService.attachLocationToConversation(
 773                conversation,
 774                uri,
 775                new UiCallback<Message>() {
 776
 777                    @Override
 778                    public void success(Message message) {}
 779
 780                    @Override
 781                    public void error(int errorCode, Message object) {
 782                        // TODO show possible pgp error
 783                    }
 784
 785                    @Override
 786                    public void userInputRequired(PendingIntent pi, Message object) {}
 787                });
 788    }
 789
 790    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 791        if (conversation == null) {
 792            return;
 793        }
 794        final Toast prepareFileToast =
 795                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 796        prepareFileToast.show();
 797        activity.delegateUriPermissionsToService(uri);
 798        activity.xmppConnectionService.attachFileToConversation(
 799                conversation,
 800                uri,
 801                type,
 802                new UiInformableCallback<Message>() {
 803                    @Override
 804                    public void inform(final String text) {
 805                        hidePrepareFileToast(prepareFileToast);
 806                        runOnUiThread(() -> activity.replaceToast(text));
 807                    }
 808
 809                    @Override
 810                    public void success(Message message) {
 811                        runOnUiThread(() -> activity.hideToast());
 812                        hidePrepareFileToast(prepareFileToast);
 813                    }
 814
 815                    @Override
 816                    public void error(final int errorCode, Message message) {
 817                        hidePrepareFileToast(prepareFileToast);
 818                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 819                    }
 820
 821                    @Override
 822                    public void userInputRequired(PendingIntent pi, Message message) {
 823                        hidePrepareFileToast(prepareFileToast);
 824                    }
 825                });
 826    }
 827
 828    public void attachEditorContentToConversation(Uri uri) {
 829        mediaPreviewAdapter.addMediaPreviews(
 830                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 831        toggleInputMethod();
 832    }
 833
 834    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 835        if (conversation == null) {
 836            return;
 837        }
 838        final Toast prepareFileToast =
 839                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 840        prepareFileToast.show();
 841        activity.delegateUriPermissionsToService(uri);
 842        activity.xmppConnectionService.attachImageToConversation(
 843                conversation,
 844                uri,
 845                type,
 846                new UiCallback<Message>() {
 847
 848                    @Override
 849                    public void userInputRequired(PendingIntent pi, Message object) {
 850                        hidePrepareFileToast(prepareFileToast);
 851                    }
 852
 853                    @Override
 854                    public void success(Message message) {
 855                        hidePrepareFileToast(prepareFileToast);
 856                    }
 857
 858                    @Override
 859                    public void error(final int error, final Message message) {
 860                        hidePrepareFileToast(prepareFileToast);
 861                        final ConversationsActivity activity = ConversationFragment.this.activity;
 862                        if (activity == null) {
 863                            return;
 864                        }
 865                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 866                    }
 867                });
 868    }
 869
 870    private void hidePrepareFileToast(final Toast prepareFileToast) {
 871        if (prepareFileToast != null && activity != null) {
 872            activity.runOnUiThread(prepareFileToast::cancel);
 873        }
 874    }
 875
 876    private void sendMessage() {
 877        conversation.setUserSelectedThread(false);
 878        if (mediaPreviewAdapter.hasAttachments()) {
 879            commitAttachments();
 880            return;
 881        }
 882        final Editable text = this.binding.textinput.getText();
 883        final String body = text == null ? "" : text.toString();
 884        final Conversation conversation = this.conversation;
 885        if (body.length() == 0 || conversation == null) {
 886            return;
 887        }
 888        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 889            return;
 890        }
 891        final Message message;
 892        if (conversation.getCorrectingMessage() == null) {
 893            message = new Message(conversation, body, conversation.getNextEncryption());
 894            message.setThread(conversation.getThread());
 895            Message.configurePrivateMessage(message);
 896        } else {
 897            message = conversation.getCorrectingMessage();
 898            message.setBody(body);
 899            message.putEdited(message.getUuid(), message.getServerMsgId());
 900            message.setServerMsgId(null);
 901            message.setUuid(UUID.randomUUID().toString());
 902        }
 903        switch (conversation.getNextEncryption()) {
 904            case Message.ENCRYPTION_PGP:
 905                sendPgpMessage(message);
 906                break;
 907            default:
 908                sendMessage(message);
 909        }
 910    }
 911
 912    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 913        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 914                && trustKeysIfNeeded(requestCode);
 915    }
 916
 917    protected boolean trustKeysIfNeeded(int requestCode) {
 918        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 919        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 920        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 921        boolean hasUndecidedOwn =
 922                !axolotlService
 923                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 924                        .isEmpty();
 925        boolean hasUndecidedContacts =
 926                !axolotlService
 927                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 928                        .isEmpty();
 929        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 930        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 931        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 932        if (hasUndecidedOwn
 933                || hasUndecidedContacts
 934                || hasPendingKeys
 935                || hasNoTrustedKeys
 936                || hasUnaccepted
 937                || downloadInProgress) {
 938            axolotlService.createSessionsIfNeeded(conversation);
 939            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 940            String[] contacts = new String[targets.size()];
 941            for (int i = 0; i < contacts.length; ++i) {
 942                contacts[i] = targets.get(i).toString();
 943            }
 944            intent.putExtra("contacts", contacts);
 945            intent.putExtra(
 946                    EXTRA_ACCOUNT,
 947                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 948            intent.putExtra("conversation", conversation.getUuid());
 949            startActivityForResult(intent, requestCode);
 950            return true;
 951        } else {
 952            return false;
 953        }
 954    }
 955
 956    public void updateChatMsgHint() {
 957        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 958        if (conversation.getCorrectingMessage() != null) {
 959            this.binding.textInputHint.setVisibility(View.GONE);
 960            this.binding.textinput.setHint(R.string.send_corrected_message);
 961            binding.conversationViewPager.setCurrentItem(0);
 962        } else if (multi && conversation.getNextCounterpart() != null) {
 963            this.binding.textinput.setHint(R.string.send_message);
 964            this.binding.textInputHint.setVisibility(View.VISIBLE);
 965            this.binding.textInputHint.setText(
 966                    getString(
 967                            R.string.send_private_message_to,
 968                            conversation.getNextCounterpart().getResource()));
 969            binding.conversationViewPager.setCurrentItem(0);
 970        } else if (multi && !conversation.getMucOptions().participating()) {
 971            this.binding.textInputHint.setVisibility(View.GONE);
 972            this.binding.textinput.setHint(R.string.you_are_not_participating);
 973        } else {
 974            this.binding.textInputHint.setVisibility(View.GONE);
 975            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 976            getActivity().invalidateOptionsMenu();
 977        }
 978
 979        binding.messagesView.post(this::updateThreadFromLastMessage);
 980    }
 981
 982    public void setupIme() {
 983        this.binding.textinput.refreshIme();
 984    }
 985
 986    private void handleActivityResult(ActivityResult activityResult) {
 987        if (activityResult.resultCode == Activity.RESULT_OK) {
 988            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 989        } else {
 990            handleNegativeActivityResult(activityResult.requestCode);
 991        }
 992    }
 993
 994    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 995        switch (requestCode) {
 996            case REQUEST_SAVE_STICKER:
 997                final DocumentFile df = DocumentFile.fromTreeUri(activity, data.getData());
 998                final File f = savingAsSticker;
 999                final String existingName = savingAsStickerName;
1000                savingAsSticker = null;
1001                savingAsStickerName = null;
1002                activity.quickEdit(existingName, R.string.sticker_name, (name) -> {
1003                    try {
1004                        activity.xmppConnectionService.getFileBackend().copyFileToDocumentFile(activity, f, df, name);
1005                    } catch (final FileBackend.FileCopyException e) {
1006                        Toast.makeText(activity, e.getResId(), Toast.LENGTH_SHORT).show();
1007                        return null;
1008                    }
1009
1010                    Toast.makeText(activity, "Sticker saved", Toast.LENGTH_SHORT).show();
1011                    return null;
1012                });
1013                break;
1014            case REQUEST_TRUST_KEYS_TEXT:
1015                sendMessage();
1016                break;
1017            case REQUEST_TRUST_KEYS_ATTACHMENTS:
1018                commitAttachments();
1019                break;
1020            case REQUEST_START_AUDIO_CALL:
1021                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1022                break;
1023            case REQUEST_START_VIDEO_CALL:
1024                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1025                break;
1026            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1027                final List<Attachment> imageUris =
1028                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
1029                mediaPreviewAdapter.addMediaPreviews(imageUris);
1030                toggleInputMethod();
1031                break;
1032            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1033                final Uri takePhotoUri = pendingTakePhotoUri.pop();
1034                if (takePhotoUri != null) {
1035                    mediaPreviewAdapter.addMediaPreviews(
1036                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
1037                    toggleInputMethod();
1038                } else {
1039                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
1040                }
1041                break;
1042            case ATTACHMENT_CHOICE_CHOOSE_FILE:
1043            case ATTACHMENT_CHOICE_RECORD_VIDEO:
1044            case ATTACHMENT_CHOICE_RECORD_VOICE:
1045                final Attachment.Type type =
1046                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
1047                                ? Attachment.Type.RECORDING
1048                                : Attachment.Type.FILE;
1049                final List<Attachment> fileUris =
1050                        Attachment.extractAttachments(getActivity(), data, type);
1051                mediaPreviewAdapter.addMediaPreviews(fileUris);
1052                toggleInputMethod();
1053                break;
1054            case ATTACHMENT_CHOICE_LOCATION:
1055                final double latitude = data.getDoubleExtra("latitude", 0);
1056                final double longitude = data.getDoubleExtra("longitude", 0);
1057                final int accuracy = data.getIntExtra("accuracy", 0);
1058                final Uri geo;
1059                if (accuracy > 0) {
1060                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1061                } else {
1062                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1063                }
1064                mediaPreviewAdapter.addMediaPreviews(
1065                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1066                toggleInputMethod();
1067                break;
1068            case REQUEST_INVITE_TO_CONVERSATION:
1069                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1070                if (invite != null) {
1071                    if (invite.execute(activity)) {
1072                        activity.mToast =
1073                                Toast.makeText(
1074                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1075                        activity.mToast.show();
1076                    }
1077                }
1078                break;
1079        }
1080    }
1081
1082    private void commitAttachments() {
1083        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1084        if (anyNeedsExternalStoragePermission(attachments)
1085                && !hasPermissions(
1086                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1087            return;
1088        }
1089        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1090            return;
1091        }
1092        final PresenceSelector.OnPresenceSelected callback =
1093                () -> {
1094                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1095                        final Attachment attachment = i.next();
1096                        if (attachment.getType() == Attachment.Type.LOCATION) {
1097                            attachLocationToConversation(conversation, attachment.getUri());
1098                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1099                            Log.d(
1100                                    Config.LOGTAG,
1101                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1102                            attachImageToConversation(
1103                                    conversation, attachment.getUri(), attachment.getMime());
1104                        } else {
1105                            Log.d(
1106                                    Config.LOGTAG,
1107                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1108                            attachFileToConversation(
1109                                    conversation, attachment.getUri(), attachment.getMime());
1110                        }
1111                    }
1112                    mediaPreviewAdapter.notifyDataSetChanged();
1113                    toggleInputMethod();
1114                };
1115        if (conversation == null
1116                || conversation.getMode() == Conversation.MODE_MULTI
1117                || Attachment.canBeSendInband(attachments)
1118                || (conversation.getAccount().httpUploadAvailable()
1119                        && FileBackend.allFilesUnderSize(
1120                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1121            callback.onPresenceSelected();
1122        } else {
1123            activity.selectPresence(conversation, callback);
1124        }
1125    }
1126
1127    private static boolean anyNeedsExternalStoragePermission(
1128            final Collection<Attachment> attachments) {
1129        for (final Attachment attachment : attachments) {
1130            if (attachment.getType() != Attachment.Type.LOCATION) {
1131                return true;
1132            }
1133        }
1134        return false;
1135    }
1136
1137    public void toggleInputMethod() {
1138        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1139        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1140        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1141        updateSendButton();
1142    }
1143
1144    private void handleNegativeActivityResult(int requestCode) {
1145        switch (requestCode) {
1146            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1147                if (pendingTakePhotoUri.clear()) {
1148                    Log.d(
1149                            Config.LOGTAG,
1150                            "cleared pending photo uri after negative activity result");
1151                }
1152                break;
1153        }
1154    }
1155
1156    @Override
1157    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1158        super.onActivityResult(requestCode, resultCode, data);
1159        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1160        if (activity != null && activity.xmppConnectionService != null) {
1161            handleActivityResult(activityResult);
1162        } else {
1163            this.postponedActivityResult.push(activityResult);
1164        }
1165    }
1166
1167    public void unblockConversation(final Blockable conversation) {
1168        activity.xmppConnectionService.sendUnblockRequest(conversation);
1169    }
1170
1171    @Override
1172    public void onAttach(Activity activity) {
1173        super.onAttach(activity);
1174        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1175        if (activity instanceof ConversationsActivity) {
1176            this.activity = (ConversationsActivity) activity;
1177        } else {
1178            throw new IllegalStateException(
1179                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1180        }
1181    }
1182
1183    @Override
1184    public void onDetach() {
1185        super.onDetach();
1186        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1187    }
1188
1189    @Override
1190    public void onCreate(Bundle savedInstanceState) {
1191        super.onCreate(savedInstanceState);
1192        setHasOptionsMenu(true);
1193        activity.getOnBackPressedDispatcher().addCallback(backPressedLeaveSingleThread);
1194    }
1195
1196    @Override
1197    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1198        menuInflater.inflate(R.menu.fragment_conversation, menu);
1199        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1200        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1201        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1202        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1203        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1204        final MenuItem menuCall = menu.findItem(R.id.action_call);
1205        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1206        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1207        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1208
1209        if (conversation != null) {
1210            if (conversation.getMode() == Conversation.MODE_MULTI) {
1211                menuContactDetails.setVisible(false);
1212                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1213                menuMucDetails.setTitle(
1214                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1215                                ? R.string.action_muc_details
1216                                : R.string.channel_details);
1217                menuCall.setVisible(false);
1218                menuOngoingCall.setVisible(false);
1219            } else {
1220                final XmppConnectionService service =
1221                        activity == null ? null : activity.xmppConnectionService;
1222                final Optional<OngoingRtpSession> ongoingRtpSession =
1223                        service == null
1224                                ? Optional.absent()
1225                                : service.getJingleConnectionManager()
1226                                        .getOngoingRtpConnection(conversation.getContact());
1227                if (ongoingRtpSession.isPresent()) {
1228                    menuOngoingCall.setVisible(true);
1229                    menuCall.setVisible(false);
1230                } else {
1231                    menuOngoingCall.setVisible(false);
1232                    final RtpCapability.Capability rtpCapability =
1233                            RtpCapability.check(conversation.getContact());
1234                    final boolean cameraAvailable =
1235                            activity != null && activity.isCameraFeatureAvailable();
1236                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1237                    menuVideoCall.setVisible(
1238                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1239                }
1240                menuContactDetails.setVisible(!this.conversation.withSelf());
1241                menuMucDetails.setVisible(false);
1242                menuInviteContact.setVisible(
1243                        service != null
1244                                && service.findConferenceServer(conversation.getAccount()) != null);
1245            }
1246            if (conversation.isMuted()) {
1247                menuMute.setVisible(false);
1248            } else {
1249                menuUnmute.setVisible(false);
1250            }
1251            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1252            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1253            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1254                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1255            } else {
1256                menuTogglePinned.setTitle(R.string.add_to_favorites);
1257            }
1258        }
1259        super.onCreateOptionsMenu(menu, menuInflater);
1260    }
1261
1262    @Override
1263    public View onCreateView(
1264            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1265        this.binding =
1266                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1267        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1268
1269        binding.textinput.addTextChangedListener(
1270                new StylingHelper.MessageEditorStyler(binding.textinput));
1271
1272        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1273        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1274
1275        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1276
1277        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1278        binding.messagesView.setOnScrollListener(mOnScrollListener);
1279        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1280        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1281        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1282        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1283        messageListAdapter.setOnContactPictureClicked(this);
1284        messageListAdapter.setOnContactPictureLongClicked(this);
1285        binding.messagesView.setAdapter(messageListAdapter);
1286
1287        registerForContextMenu(binding.messagesView);
1288
1289        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1290            this.binding.textinput.setCustomInsertionActionModeCallback(
1291                    new EditMessageActionModeCallback(this.binding.textinput));
1292        }
1293
1294        messageListAdapter.setOnMessageBoxClicked(message -> {
1295            setThread(message.getThread());
1296            conversation.setUserSelectedThread(true);
1297        });
1298
1299        binding.threadIdenticonLayout.setOnClickListener(v -> {
1300            boolean wasLocked = conversation.getLockThread();
1301            conversation.setLockThread(false);
1302            backPressedLeaveSingleThread.setEnabled(false);
1303            if (wasLocked) {
1304                conversation.setUserSelectedThread(false);
1305                refresh();
1306                updateThreadFromLastMessage();
1307            } else {
1308                newThread();
1309                conversation.setUserSelectedThread(true);
1310                newThreadTutorialToast("Switched to new thread");
1311            }
1312        });
1313
1314        binding.threadIdenticonLayout.setOnLongClickListener(v -> {
1315            boolean wasLocked = conversation.getLockThread();
1316            conversation.setLockThread(false);
1317            backPressedLeaveSingleThread.setEnabled(false);
1318            setThread(null);
1319            conversation.setUserSelectedThread(true);
1320            if (wasLocked) refresh();
1321            newThreadTutorialToast("Cleared thread");
1322            return true;
1323        });
1324
1325        return binding.getRoot();
1326    }
1327
1328    protected void newThreadTutorialToast(String s) {
1329        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1330        final int tutorialCount = p.getInt("thread_tutorial", 0);
1331        if (tutorialCount < 5) {
1332            Toast.makeText(activity, s, Toast.LENGTH_SHORT).show();
1333            p.edit().putInt("thread_tutorial", tutorialCount + 1).apply();
1334        }
1335    }
1336
1337    @Override
1338    public void onDestroyView() {
1339        super.onDestroyView();
1340        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1341        messageListAdapter.setOnContactPictureClicked(null);
1342        messageListAdapter.setOnContactPictureLongClicked(null);
1343        if (conversation != null) conversation.setupViewPager(null, null);
1344    }
1345
1346    private void quoteText(String text) {
1347        if (binding.textinput.isEnabled()) {
1348            binding.textinput.insertAsQuote(text);
1349            binding.textinput.requestFocus();
1350            InputMethodManager inputMethodManager =
1351                    (InputMethodManager)
1352                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1353            if (inputMethodManager != null) {
1354                inputMethodManager.showSoftInput(
1355                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1356            }
1357        }
1358    }
1359
1360    private void quoteMessage(Message message) {
1361        setThread(message.getThread());
1362        conversation.setUserSelectedThread(true);
1363        quoteText(MessageUtils.prepareQuote(message));
1364    }
1365
1366    private void setThread(Element thread) {
1367        this.conversation.setThread(thread);
1368        binding.threadIdenticon.setAlpha(0f);
1369        binding.threadIdenticonLock.setVisibility(this.conversation.getLockThread() ? View.VISIBLE : View.GONE);
1370        if (thread != null) {
1371            final String threadId = thread.getContent();
1372            if (threadId != null) {
1373                binding.threadIdenticon.setAlpha(1f);
1374                binding.threadIdenticon.setColor(UIHelper.getColorForName(threadId));
1375                binding.threadIdenticon.setHash(UIHelper.identiconHash(threadId));
1376            }
1377        }
1378        updateSendButton();
1379    }
1380
1381    @Override
1382    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1383        // This should cancel any remaining click events that would otherwise trigger links
1384        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1385        synchronized (this.messageList) {
1386            super.onCreateContextMenu(menu, v, menuInfo);
1387            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1388            this.selectedMessage = this.messageList.get(acmi.position);
1389            populateContextMenu(menu);
1390        }
1391    }
1392
1393    private void populateContextMenu(ContextMenu menu) {
1394        final Message m = this.selectedMessage;
1395        final Transferable t = m.getTransferable();
1396        Message relevantForCorrection = m;
1397        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1398            relevantForCorrection = relevantForCorrection.next();
1399        }
1400        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1401
1402            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1403                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1404                return;
1405            }
1406
1407            if (m.getStatus() == Message.STATUS_RECEIVED
1408                    && t != null
1409                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1410                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1411                return;
1412            }
1413
1414            final boolean deleted = m.isDeleted();
1415            final boolean encrypted =
1416                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1417                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1418            final boolean receiving =
1419                    m.getStatus() == Message.STATUS_RECEIVED
1420                            && (t instanceof JingleFileTransferConnection
1421                                    || t instanceof HttpDownloadConnection);
1422            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1423            MenuItem openWith = menu.findItem(R.id.open_with);
1424            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1425            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1426            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1427            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1428            MenuItem retractMessage = menu.findItem(R.id.retract_message);
1429            MenuItem onlyThisThread = menu.findItem(R.id.only_this_thread);
1430            MenuItem shareWith = menu.findItem(R.id.share_with);
1431            MenuItem sendAgain = menu.findItem(R.id.send_again);
1432            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1433            MenuItem saveAsSticker = menu.findItem(R.id.save_as_sticker);
1434            MenuItem downloadFile = menu.findItem(R.id.download_file);
1435            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1436            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1437            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1438            onlyThisThread.setVisible(!conversation.getLockThread() && m.getThread() != null);
1439            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1440            final boolean showError =
1441                    m.getStatus() == Message.STATUS_SEND_FAILED
1442                            && m.getErrorMessage() != null
1443                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1444            if (!encrypted && !m.getBody().equals("")) {
1445                copyMessage.setVisible(true);
1446                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1447            }
1448            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1449                retryDecryption.setVisible(true);
1450            }
1451            if (!showError
1452                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1453                    && !m.isGeoUri()
1454                    && relevantForCorrection.isLastCorrectableMessage()
1455                    && m.getConversation() instanceof Conversation) {
1456                correctMessage.setVisible(true);
1457                if (!relevantForCorrection.getBody().equals("") && !relevantForCorrection.getBody().equals(" ")) retractMessage.setVisible(true);
1458            }
1459            if ((m.isFileOrImage() && !deleted && !receiving)
1460                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1461                            && !unInitiatedButKnownSize
1462                            && t == null) {
1463                shareWith.setVisible(true);
1464            }
1465            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1466                sendAgain.setVisible(true);
1467            }
1468            if (m.hasFileOnRemoteHost()
1469                    || m.isGeoUri()
1470                    || m.treatAsDownloadable()
1471                    || unInitiatedButKnownSize
1472                    || t instanceof HttpDownloadConnection) {
1473                copyUrl.setVisible(true);
1474            }
1475            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1476                downloadFile.setVisible(true);
1477                downloadFile.setTitle(
1478                        activity.getString(
1479                                R.string.download_x_file,
1480                                UIHelper.getFileDescriptionString(activity, m)));
1481            }
1482            final boolean waitingOfferedSending =
1483                    m.getStatus() == Message.STATUS_WAITING
1484                            || m.getStatus() == Message.STATUS_UNSEND
1485                            || m.getStatus() == Message.STATUS_OFFERED;
1486            final boolean cancelable =
1487                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1488            if (cancelable) {
1489                cancelTransmission.setVisible(true);
1490            }
1491            if (m.isFileOrImage() && !deleted && !cancelable) {
1492                final String path = m.getRelativeFilePath();
1493                if (path == null
1494                        || !path.startsWith("/")
1495                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1496                    saveAsSticker.setVisible(true);
1497                    deleteFile.setVisible(true);
1498                    deleteFile.setTitle(
1499                            activity.getString(
1500                                    R.string.delete_x_file,
1501                                    UIHelper.getFileDescriptionString(activity, m)));
1502                }
1503            }
1504            if (showError) {
1505                showErrorMessage.setVisible(true);
1506            }
1507            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1508            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1509                    || (mime != null && mime.startsWith("audio/"))) {
1510                openWith.setVisible(true);
1511            }
1512        }
1513    }
1514
1515    @Override
1516    public boolean onContextItemSelected(MenuItem item) {
1517        switch (item.getItemId()) {
1518            case R.id.share_with:
1519                ShareUtil.share(activity, selectedMessage);
1520                return true;
1521            case R.id.correct_message:
1522                correctMessage(selectedMessage);
1523                return true;
1524            case R.id.retract_message:
1525                new AlertDialog.Builder(activity)
1526                    .setTitle(R.string.retract_message)
1527                    .setMessage("Do you really want to retract this message?")
1528                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1529                        Message message = selectedMessage;
1530                        while (message.mergeable(message.next())) {
1531                            message = message.next();
1532                        }
1533                        message.setBody(" ");
1534                        message.putEdited(message.getUuid(), message.getServerMsgId());
1535                        message.setServerMsgId(null);
1536                        message.setUuid(UUID.randomUUID().toString());
1537                        sendMessage(message);
1538                    })
1539                    .setNegativeButton(R.string.no, null).show();
1540                return true;
1541            case R.id.copy_message:
1542                ShareUtil.copyToClipboard(activity, selectedMessage);
1543                return true;
1544            case R.id.quote_message:
1545                quoteMessage(selectedMessage);
1546                return true;
1547            case R.id.send_again:
1548                resendMessage(selectedMessage);
1549                return true;
1550            case R.id.copy_url:
1551                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1552                return true;
1553            case R.id.save_as_sticker:
1554                saveAsSticker(selectedMessage);
1555                return true;
1556            case R.id.download_file:
1557                startDownloadable(selectedMessage);
1558                return true;
1559            case R.id.cancel_transmission:
1560                cancelTransmission(selectedMessage);
1561                return true;
1562            case R.id.retry_decryption:
1563                retryDecryption(selectedMessage);
1564                return true;
1565            case R.id.delete_file:
1566                deleteFile(selectedMessage);
1567                return true;
1568            case R.id.show_error_message:
1569                showErrorMessage(selectedMessage);
1570                return true;
1571            case R.id.open_with:
1572                openWith(selectedMessage);
1573                return true;
1574            case R.id.only_this_thread:
1575                conversation.setLockThread(true);
1576                backPressedLeaveSingleThread.setEnabled(true);
1577                setThread(selectedMessage.getThread());
1578                refresh();
1579                return true;
1580            default:
1581                return super.onContextItemSelected(item);
1582        }
1583    }
1584
1585    @Override
1586    public boolean onOptionsItemSelected(final MenuItem item) {
1587        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1588            return false;
1589        } else if (conversation == null) {
1590            return super.onOptionsItemSelected(item);
1591        }
1592        switch (item.getItemId()) {
1593            case R.id.encryption_choice_axolotl:
1594            case R.id.encryption_choice_pgp:
1595            case R.id.encryption_choice_none:
1596                handleEncryptionSelection(item);
1597                break;
1598            case R.id.attach_choose_picture:
1599            case R.id.attach_take_picture:
1600            case R.id.attach_record_video:
1601            case R.id.attach_choose_file:
1602            case R.id.attach_record_voice:
1603            case R.id.attach_location:
1604                handleAttachmentSelection(item);
1605                break;
1606            case R.id.action_search:
1607                startSearch();
1608                break;
1609            case R.id.action_archive:
1610                activity.xmppConnectionService.archiveConversation(conversation);
1611                break;
1612            case R.id.action_contact_details:
1613                activity.switchToContactDetails(conversation.getContact());
1614                break;
1615            case R.id.action_muc_details:
1616                ConferenceDetailsActivity.open(activity, conversation);
1617                break;
1618            case R.id.action_invite:
1619                startActivityForResult(
1620                        ChooseContactActivity.create(activity, conversation),
1621                        REQUEST_INVITE_TO_CONVERSATION);
1622                break;
1623            case R.id.action_clear_history:
1624                clearHistoryDialog(conversation);
1625                break;
1626            case R.id.action_mute:
1627                muteConversationDialog(conversation);
1628                break;
1629            case R.id.action_unmute:
1630                unMuteConversation(conversation);
1631                break;
1632            case R.id.action_block:
1633            case R.id.action_unblock:
1634                final Activity activity = getActivity();
1635                if (activity instanceof XmppActivity) {
1636                    BlockContactDialog.show((XmppActivity) activity, conversation);
1637                }
1638                break;
1639            case R.id.action_audio_call:
1640                checkPermissionAndTriggerAudioCall();
1641                break;
1642            case R.id.action_video_call:
1643                checkPermissionAndTriggerVideoCall();
1644                break;
1645            case R.id.action_ongoing_call:
1646                returnToOngoingCall();
1647                break;
1648            case R.id.action_toggle_pinned:
1649                togglePinned();
1650                break;
1651            case R.id.action_refresh_feature_discovery:
1652                refreshFeatureDiscovery();
1653                break;
1654            default:
1655                break;
1656        }
1657        return super.onOptionsItemSelected(item);
1658    }
1659
1660    public boolean onBackPressed() {
1661        boolean wasLocked = conversation.getLockThread();
1662        conversation.setLockThread(false);
1663        backPressedLeaveSingleThread.setEnabled(false);
1664        if (wasLocked) {
1665            conversation.setUserSelectedThread(false);
1666            refresh();
1667            updateThreadFromLastMessage();
1668            return true;
1669        }
1670        return false;
1671    }
1672
1673    private void startSearch() {
1674        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1675        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1676        startActivity(intent);
1677    }
1678
1679    private void returnToOngoingCall() {
1680        final Optional<OngoingRtpSession> ongoingRtpSession =
1681                activity.xmppConnectionService
1682                        .getJingleConnectionManager()
1683                        .getOngoingRtpConnection(conversation.getContact());
1684        if (ongoingRtpSession.isPresent()) {
1685            final OngoingRtpSession id = ongoingRtpSession.get();
1686            final Intent intent = new Intent(activity, RtpSessionActivity.class);
1687            intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, id.getAccount().getJid().asBareJid().toEscapedString());
1688            intent.putExtra(
1689                    RtpSessionActivity.EXTRA_ACCOUNT,
1690                    id.getAccount().getJid().asBareJid().toEscapedString());
1691            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1692            if (id instanceof AbstractJingleConnection.Id) {
1693                intent.setAction(Intent.ACTION_VIEW);
1694                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1695            } else if (id instanceof JingleConnectionManager.RtpSessionProposal) {
1696                if (((JingleConnectionManager.RtpSessionProposal) id).media.contains(Media.VIDEO)) {
1697                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1698                } else {
1699                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1700                }
1701            }
1702            activity.startActivity(intent);
1703        }
1704    }
1705
1706    private void refreshFeatureDiscovery() {
1707        for (Map.Entry<String, Presence> entry : conversation.getContact().getPresences().getPresencesMap().entrySet()) {
1708            Jid jid = conversation.getContact().getJid();
1709            if (!entry.getKey().equals("")) jid = jid.withResource(entry.getKey());
1710            activity.xmppConnectionService.fetchCaps(conversation.getAccount(), jid, entry.getValue(), () -> {
1711                if (activity == null) return;
1712                activity.runOnUiThread(() -> {
1713                    refresh();
1714                    refreshCommands();
1715                });
1716            });
1717        }
1718    }
1719
1720    private void togglePinned() {
1721        final boolean pinned =
1722                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1723        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1724        activity.xmppConnectionService.updateConversation(conversation);
1725        activity.invalidateOptionsMenu();
1726    }
1727
1728    private void checkPermissionAndTriggerAudioCall() {
1729        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1730            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1731            return;
1732        }
1733        final List<String> permissions;
1734        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1735            permissions =
1736                    Arrays.asList(
1737                            Manifest.permission.RECORD_AUDIO,
1738                            Manifest.permission.BLUETOOTH_CONNECT);
1739        } else {
1740            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1741        }
1742        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1743            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1744        }
1745    }
1746
1747    private void checkPermissionAndTriggerVideoCall() {
1748        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1749            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1750            return;
1751        }
1752        final List<String> permissions;
1753        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1754            permissions =
1755                    Arrays.asList(
1756                            Manifest.permission.RECORD_AUDIO,
1757                            Manifest.permission.CAMERA,
1758                            Manifest.permission.BLUETOOTH_CONNECT);
1759        } else {
1760            permissions =
1761                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1762        }
1763        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1764            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1765        }
1766    }
1767
1768    private void triggerRtpSession(final String action) {
1769        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy() != null) {
1770            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1771                    .show();
1772            return;
1773        }
1774        final Contact contact = conversation.getContact();
1775        if (contact.getPresences().anySupport(Namespace.JINGLE_MESSAGE)) {
1776            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1777        } else {
1778            final RtpCapability.Capability capability;
1779            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1780                capability = RtpCapability.Capability.VIDEO;
1781            } else {
1782                capability = RtpCapability.Capability.AUDIO;
1783            }
1784            PresenceSelector.selectFullJidForDirectRtpConnection(
1785                    activity,
1786                    contact,
1787                    capability,
1788                    fullJid -> {
1789                        triggerRtpSession(contact.getAccount(), fullJid, action);
1790                    });
1791        }
1792    }
1793
1794    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1795        final Intent intent = new Intent(activity, RtpSessionActivity.class);
1796        intent.setAction(action);
1797        intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, account.getJid().toEscapedString());
1798        intent.putExtra(RtpSessionActivity.EXTRA_WITH, with.toEscapedString());
1799        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1800        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
1801        startActivity(intent);
1802    }
1803
1804    private void handleAttachmentSelection(MenuItem item) {
1805        switch (item.getItemId()) {
1806            case R.id.attach_choose_picture:
1807                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1808                break;
1809            case R.id.attach_take_picture:
1810                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1811                break;
1812            case R.id.attach_record_video:
1813                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1814                break;
1815            case R.id.attach_choose_file:
1816                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1817                break;
1818            case R.id.attach_record_voice:
1819                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1820                break;
1821            case R.id.attach_location:
1822                attachFile(ATTACHMENT_CHOICE_LOCATION);
1823                break;
1824        }
1825    }
1826
1827    private void handleEncryptionSelection(MenuItem item) {
1828        if (conversation == null) {
1829            return;
1830        }
1831        final boolean updated;
1832        switch (item.getItemId()) {
1833            case R.id.encryption_choice_none:
1834                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1835                item.setChecked(true);
1836                break;
1837            case R.id.encryption_choice_pgp:
1838                if (activity.hasPgp()) {
1839                    if (conversation.getAccount().getPgpSignature() != null) {
1840                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1841                        item.setChecked(true);
1842                    } else {
1843                        updated = false;
1844                        activity.announcePgp(
1845                                conversation.getAccount(),
1846                                conversation,
1847                                null,
1848                                activity.onOpenPGPKeyPublished);
1849                    }
1850                } else {
1851                    activity.showInstallPgpDialog();
1852                    updated = false;
1853                }
1854                break;
1855            case R.id.encryption_choice_axolotl:
1856                Log.d(
1857                        Config.LOGTAG,
1858                        AxolotlService.getLogprefix(conversation.getAccount())
1859                                + "Enabled axolotl for Contact "
1860                                + conversation.getContact().getJid());
1861                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1862                item.setChecked(true);
1863                break;
1864            default:
1865                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1866                break;
1867        }
1868        if (updated) {
1869            activity.xmppConnectionService.updateConversation(conversation);
1870        }
1871        updateChatMsgHint();
1872        getActivity().invalidateOptionsMenu();
1873        activity.refreshUi();
1874    }
1875
1876    public void attachFile(final int attachmentChoice) {
1877        attachFile(attachmentChoice, true);
1878    }
1879
1880    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1881        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1882            if (!hasPermissions(
1883                    attachmentChoice,
1884                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1885                    Manifest.permission.RECORD_AUDIO)) {
1886                return;
1887            }
1888        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1889                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1890            if (!hasPermissions(
1891                    attachmentChoice,
1892                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1893                    Manifest.permission.CAMERA)) {
1894                return;
1895            }
1896        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1897            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1898                return;
1899            }
1900        }
1901        if (updateRecentlyUsed) {
1902            storeRecentlyUsedQuickAction(attachmentChoice);
1903        }
1904        final int encryption = conversation.getNextEncryption();
1905        final int mode = conversation.getMode();
1906        if (encryption == Message.ENCRYPTION_PGP) {
1907            if (activity.hasPgp()) {
1908                if (mode == Conversation.MODE_SINGLE
1909                        && conversation.getContact().getPgpKeyId() != 0) {
1910                    activity.xmppConnectionService
1911                            .getPgpEngine()
1912                            .hasKey(
1913                                    conversation.getContact(),
1914                                    new UiCallback<Contact>() {
1915
1916                                        @Override
1917                                        public void userInputRequired(
1918                                                PendingIntent pi, Contact contact) {
1919                                            startPendingIntent(pi, attachmentChoice);
1920                                        }
1921
1922                                        @Override
1923                                        public void success(Contact contact) {
1924                                            invokeAttachFileIntent(attachmentChoice);
1925                                        }
1926
1927                                        @Override
1928                                        public void error(int error, Contact contact) {
1929                                            activity.replaceToast(getString(error));
1930                                        }
1931                                    });
1932                } else if (mode == Conversation.MODE_MULTI
1933                        && conversation.getMucOptions().pgpKeysInUse()) {
1934                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1935                        Toast warning =
1936                                Toast.makeText(
1937                                        getActivity(),
1938                                        R.string.missing_public_keys,
1939                                        Toast.LENGTH_LONG);
1940                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1941                        warning.show();
1942                    }
1943                    invokeAttachFileIntent(attachmentChoice);
1944                } else {
1945                    showNoPGPKeyDialog(
1946                            false,
1947                            (dialog, which) -> {
1948                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1949                                activity.xmppConnectionService.updateConversation(conversation);
1950                                invokeAttachFileIntent(attachmentChoice);
1951                            });
1952                }
1953            } else {
1954                activity.showInstallPgpDialog();
1955            }
1956        } else {
1957            invokeAttachFileIntent(attachmentChoice);
1958        }
1959    }
1960
1961    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1962        try {
1963            activity.getPreferences()
1964                    .edit()
1965                    .putString(
1966                            RECENTLY_USED_QUICK_ACTION,
1967                            SendButtonAction.of(attachmentChoice).toString())
1968                    .apply();
1969        } catch (IllegalArgumentException e) {
1970            // just do not save
1971        }
1972    }
1973
1974    @Override
1975    public void onRequestPermissionsResult(
1976            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1977        final PermissionUtils.PermissionResult permissionResult =
1978                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1979        if (grantResults.length > 0) {
1980            if (allGranted(permissionResult.grantResults)) {
1981                switch (requestCode) {
1982                    case REQUEST_START_DOWNLOAD:
1983                        if (this.mPendingDownloadableMessage != null) {
1984                            startDownloadable(this.mPendingDownloadableMessage);
1985                        }
1986                        break;
1987                    case REQUEST_ADD_EDITOR_CONTENT:
1988                        if (this.mPendingEditorContent != null) {
1989                            attachEditorContentToConversation(this.mPendingEditorContent);
1990                        }
1991                        break;
1992                    case REQUEST_COMMIT_ATTACHMENTS:
1993                        commitAttachments();
1994                        break;
1995                    case REQUEST_START_AUDIO_CALL:
1996                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1997                        break;
1998                    case REQUEST_START_VIDEO_CALL:
1999                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
2000                        break;
2001                    default:
2002                        attachFile(requestCode);
2003                        break;
2004                }
2005            } else {
2006                @StringRes int res;
2007                String firstDenied =
2008                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
2009                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
2010                    res = R.string.no_microphone_permission;
2011                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
2012                    res = R.string.no_camera_permission;
2013                } else {
2014                    res = R.string.no_storage_permission;
2015                }
2016                Toast.makeText(
2017                                getActivity(),
2018                                getString(res, getString(R.string.app_name)),
2019                                Toast.LENGTH_SHORT)
2020                        .show();
2021            }
2022        }
2023        if (writeGranted(grantResults, permissions)) {
2024            if (activity != null && activity.xmppConnectionService != null) {
2025                activity.xmppConnectionService.getBitmapCache().evictAll();
2026                activity.xmppConnectionService.restartFileObserver();
2027            }
2028            refresh();
2029        }
2030    }
2031
2032    public void startDownloadable(Message message) {
2033        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2034            this.mPendingDownloadableMessage = message;
2035            return;
2036        }
2037        Transferable transferable = message.getTransferable();
2038        if (transferable != null) {
2039            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
2040                createNewConnection(message);
2041                return;
2042            }
2043            if (!transferable.start()) {
2044                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
2045                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2046                        .show();
2047            }
2048        } else if (message.treatAsDownloadable()
2049                || message.hasFileOnRemoteHost()
2050                || MessageUtils.unInitiatedButKnownSize(message)) {
2051            createNewConnection(message);
2052        } else {
2053            Log.d(
2054                    Config.LOGTAG,
2055                    message.getConversation().getAccount() + ": unable to start downloadable");
2056        }
2057    }
2058
2059    private void createNewConnection(final Message message) {
2060        if (!activity.xmppConnectionService.hasInternetConnection()) {
2061            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2062                    .show();
2063            return;
2064        }
2065        if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
2066            try {
2067                BobTransfer transfer = new BobTransfer.ForMessage(message, activity.xmppConnectionService);
2068                message.setTransferable(transfer);
2069                transfer.start();
2070            } catch (URISyntaxException e) {
2071                Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
2072            }
2073        } else {
2074            activity.xmppConnectionService
2075                    .getHttpConnectionManager()
2076                    .createNewDownloadConnection(message, true);
2077        }
2078    }
2079
2080    @SuppressLint("InflateParams")
2081    protected void clearHistoryDialog(final Conversation conversation) {
2082        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2083        builder.setTitle(getString(R.string.clear_conversation_history));
2084        final View dialogView =
2085                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
2086        final CheckBox endConversationCheckBox =
2087                dialogView.findViewById(R.id.end_conversation_checkbox);
2088        builder.setView(dialogView);
2089        builder.setNegativeButton(getString(R.string.cancel), null);
2090        builder.setPositiveButton(
2091                getString(R.string.confirm),
2092                (dialog, which) -> {
2093                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
2094                    if (endConversationCheckBox.isChecked()) {
2095                        this.activity.xmppConnectionService.archiveConversation(conversation);
2096                        this.activity.onConversationArchived(conversation);
2097                    } else {
2098                        activity.onConversationsListItemUpdated();
2099                        refresh();
2100                    }
2101                });
2102        builder.create().show();
2103    }
2104
2105    protected void muteConversationDialog(final Conversation conversation) {
2106        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
2107        builder.setTitle(R.string.disable_notifications);
2108        final int[] durations = activity.getResources().getIntArray(R.array.mute_options_durations);
2109        final CharSequence[] labels = new CharSequence[durations.length];
2110        for (int i = 0; i < durations.length; ++i) {
2111            if (durations[i] == -1) {
2112                labels[i] = activity.getString(R.string.until_further_notice);
2113            } else {
2114                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
2115            }
2116        }
2117        builder.setItems(
2118                labels,
2119                (dialog, which) -> {
2120                    final long till;
2121                    if (durations[which] == -1) {
2122                        till = Long.MAX_VALUE;
2123                    } else {
2124                        till = System.currentTimeMillis() + (durations[which] * 1000L);
2125                    }
2126                    conversation.setMutedTill(till);
2127                    activity.xmppConnectionService.updateConversation(conversation);
2128                    activity.onConversationsListItemUpdated();
2129                    refresh();
2130                    activity.invalidateOptionsMenu();
2131                });
2132        builder.create().show();
2133    }
2134
2135    private boolean hasPermissions(int requestCode, List<String> permissions) {
2136        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
2137            final List<String> missingPermissions = new ArrayList<>();
2138            for (String permission : permissions) {
2139                if (Config.ONLY_INTERNAL_STORAGE
2140                        && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2141                    continue;
2142                }
2143                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2144                    missingPermissions.add(permission);
2145                }
2146            }
2147            if (missingPermissions.size() == 0) {
2148                return true;
2149            } else {
2150                requestPermissions(
2151                        missingPermissions.toArray(new String[0]),
2152                        requestCode);
2153                return false;
2154            }
2155        } else {
2156            return true;
2157        }
2158    }
2159
2160    private boolean hasPermissions(int requestCode, String... permissions) {
2161        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2162    }
2163
2164    public void unMuteConversation(final Conversation conversation) {
2165        conversation.setMutedTill(0);
2166        this.activity.xmppConnectionService.updateConversation(conversation);
2167        this.activity.onConversationsListItemUpdated();
2168        refresh();
2169        this.activity.invalidateOptionsMenu();
2170    }
2171
2172    protected void invokeAttachFileIntent(final int attachmentChoice) {
2173        Intent intent = new Intent();
2174        boolean chooser = false;
2175        switch (attachmentChoice) {
2176            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2177                intent.setAction(Intent.ACTION_GET_CONTENT);
2178                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2179                intent.setType("image/*");
2180                chooser = true;
2181                break;
2182            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2183                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2184                break;
2185            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2186                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2187                pendingTakePhotoUri.push(uri);
2188                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2189                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2190                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2191                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2192                break;
2193            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2194                chooser = true;
2195                intent.setType("*/*");
2196                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2197                intent.addCategory(Intent.CATEGORY_OPENABLE);
2198                intent.setAction(Intent.ACTION_GET_CONTENT);
2199                break;
2200            case ATTACHMENT_CHOICE_RECORD_VOICE:
2201                intent = new Intent(getActivity(), RecordingActivity.class);
2202                break;
2203            case ATTACHMENT_CHOICE_LOCATION:
2204                intent = GeoHelper.getFetchIntent(activity);
2205                break;
2206        }
2207        final Context context = getActivity();
2208        if (context == null) {
2209            return;
2210        }
2211        try {
2212            if (chooser) {
2213                startActivityForResult(
2214                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2215                        attachmentChoice);
2216            } else {
2217                startActivityForResult(intent, attachmentChoice);
2218            }
2219        } catch (final ActivityNotFoundException e) {
2220            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2221        }
2222    }
2223
2224    @Override
2225    public void onResume() {
2226        super.onResume();
2227        binding.messagesView.post(this::fireReadEvent);
2228    }
2229
2230    private void fireReadEvent() {
2231        if (activity != null && this.conversation != null) {
2232            String uuid = getLastVisibleMessageUuid();
2233            if (uuid != null) {
2234                activity.onConversationRead(this.conversation, uuid);
2235            }
2236        }
2237    }
2238
2239    private void newThread() {
2240        Element thread = new Element("thread", "jabber:client");
2241        thread.setContent(UUID.randomUUID().toString());
2242        setThread(thread);
2243    }
2244
2245    private void updateThreadFromLastMessage() {
2246        if (this.conversation != null && !this.conversation.getUserSelectedThread() && TextUtils.isEmpty(binding.textinput.getText())) {
2247            Message message = getLastVisibleMessage();
2248            if (message == null) {
2249                newThread();
2250            } else {
2251                setThread(message.getThread());
2252            }
2253        }
2254    }
2255
2256    private String getLastVisibleMessageUuid() {
2257        Message message =  getLastVisibleMessage();
2258        return message == null ? null : message.getUuid();
2259    }
2260
2261    private Message getLastVisibleMessage() {
2262        if (binding == null) {
2263            return null;
2264        }
2265        synchronized (this.messageList) {
2266            int pos = binding.messagesView.getLastVisiblePosition();
2267            if (pos >= 0) {
2268                Message message = null;
2269                for (int i = pos; i >= 0; --i) {
2270                    try {
2271                        message = (Message) binding.messagesView.getItemAtPosition(i);
2272                    } catch (IndexOutOfBoundsException e) {
2273                        // should not happen if we synchronize properly. however if that fails we
2274                        // just gonna try item -1
2275                        continue;
2276                    }
2277                    if (message.getType() != Message.TYPE_STATUS) {
2278                        break;
2279                    }
2280                }
2281                if (message != null) {
2282                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2283                        message = message.next();
2284                    }
2285                    return message;
2286                }
2287            }
2288        }
2289        return null;
2290    }
2291
2292    private void openWith(final Message message) {
2293        if (message.isGeoUri()) {
2294            GeoHelper.view(getActivity(), message);
2295        } else {
2296            final DownloadableFile file =
2297                    activity.xmppConnectionService.getFileBackend().getFile(message);
2298            ViewUtil.view(activity, file);
2299        }
2300    }
2301
2302    private void showErrorMessage(final Message message) {
2303        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2304        builder.setTitle(R.string.error_message);
2305        final String errorMessage = message.getErrorMessage();
2306        final String[] errorMessageParts =
2307                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2308        final String displayError;
2309        if (errorMessageParts.length == 2) {
2310            displayError = errorMessageParts[1];
2311        } else {
2312            displayError = errorMessage;
2313        }
2314        builder.setMessage(displayError);
2315        builder.setNegativeButton(
2316                R.string.copy_to_clipboard,
2317                (dialog, which) -> {
2318                    activity.copyTextToClipboard(displayError, R.string.error_message);
2319                    Toast.makeText(
2320                                    activity,
2321                                    R.string.error_message_copied_to_clipboard,
2322                                    Toast.LENGTH_SHORT)
2323                            .show();
2324                });
2325        builder.setPositiveButton(R.string.confirm, null);
2326        builder.create().show();
2327    }
2328
2329    private void saveAsSticker(final Message m) {
2330        String existingName = m.getFileParams() != null && m.getFileParams().getName() != null ? m.getFileParams().getName() : "";
2331        existingName = existingName.lastIndexOf(".") == -1 ? existingName : existingName.substring(0, existingName.lastIndexOf("."));
2332        saveAsSticker(activity.xmppConnectionService.getFileBackend().getFile(m), existingName);
2333    }
2334
2335    private void saveAsSticker(final File file, final String name) {
2336        savingAsSticker = file;
2337        savingAsStickerName = name;
2338
2339        Intent intent = ((StorageManager) activity.getSystemService(Context.STORAGE_SERVICE)).getPrimaryStorageVolume().createOpenDocumentTreeIntent();
2340
2341        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2342        final String dir = p.getString("sticker_directory", "Stickers");
2343        if (dir.startsWith("content://")) {
2344            intent.putExtra("android.provider.extra.INITIAL_URI", Uri.parse(dir));
2345        } else {
2346            new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + dir + "/User Pack").mkdirs();
2347            Uri uri = intent.getParcelableExtra("android.provider.extra.INITIAL_URI");
2348            intent.putExtra("android.provider.extra.INITIAL_URI", Uri.parse(uri.toString().replace("/root/", "/document/") + "%3APictures%2F" + dir));
2349        }
2350
2351        Toast.makeText(activity, "Choose a sticker pack to add this sticker to", Toast.LENGTH_SHORT).show();
2352        startActivityForResult(Intent.createChooser(intent, "Choose sticker pack"), REQUEST_SAVE_STICKER);
2353    }
2354
2355    private void deleteFile(final Message message) {
2356        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2357        builder.setNegativeButton(R.string.cancel, null);
2358        builder.setTitle(R.string.delete_file_dialog);
2359        builder.setMessage(R.string.delete_file_dialog_msg);
2360        builder.setPositiveButton(
2361                R.string.confirm,
2362                (dialog, which) -> {
2363                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2364                        message.setDeleted(true);
2365                        activity.xmppConnectionService.evictPreview(message.getUuid());
2366                        activity.xmppConnectionService.updateMessage(message, false);
2367                        activity.onConversationsListItemUpdated();
2368                        refresh();
2369                    }
2370                });
2371        builder.create().show();
2372    }
2373
2374    private void resendMessage(final Message message) {
2375        if (message.isFileOrImage()) {
2376            if (!(message.getConversation() instanceof Conversation)) {
2377                return;
2378            }
2379            final Conversation conversation = (Conversation) message.getConversation();
2380            final DownloadableFile file =
2381                    activity.xmppConnectionService.getFileBackend().getFile(message);
2382            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2383                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2384                if (!message.hasFileOnRemoteHost()
2385                        && xmppConnection != null
2386                        && conversation.getMode() == Conversational.MODE_SINGLE
2387                        && !xmppConnection
2388                                .getFeatures()
2389                                .httpUpload(message.getFileParams().getSize())) {
2390                    activity.selectPresence(
2391                            conversation,
2392                            () -> {
2393                                message.setCounterpart(conversation.getNextCounterpart());
2394                                activity.xmppConnectionService.resendFailedMessages(message);
2395                                new Handler()
2396                                        .post(
2397                                                () -> {
2398                                                    int size = messageList.size();
2399                                                    this.binding.messagesView.setSelection(
2400                                                            size - 1);
2401                                                });
2402                            });
2403                    return;
2404                }
2405            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2406                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2407                return;
2408            } else {
2409                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2410                message.setDeleted(true);
2411                activity.xmppConnectionService.updateMessage(message, false);
2412                activity.onConversationsListItemUpdated();
2413                refresh();
2414                return;
2415            }
2416        }
2417        activity.xmppConnectionService.resendFailedMessages(message);
2418        new Handler()
2419                .post(
2420                        () -> {
2421                            int size = messageList.size();
2422                            this.binding.messagesView.setSelection(size - 1);
2423                        });
2424    }
2425
2426    private void cancelTransmission(Message message) {
2427        Transferable transferable = message.getTransferable();
2428        if (transferable != null) {
2429            transferable.cancel();
2430        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2431            activity.xmppConnectionService.markMessage(
2432                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2433        }
2434    }
2435
2436    private void retryDecryption(Message message) {
2437        message.setEncryption(Message.ENCRYPTION_PGP);
2438        activity.onConversationsListItemUpdated();
2439        refresh();
2440        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2441    }
2442
2443    public void privateMessageWith(final Jid counterpart) {
2444        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2445            activity.xmppConnectionService.sendChatState(conversation);
2446        }
2447        this.binding.textinput.setText("");
2448        this.conversation.setNextCounterpart(counterpart);
2449        updateChatMsgHint();
2450        updateSendButton();
2451        updateEditablity();
2452    }
2453
2454    private void correctMessage(Message message) {
2455        while (message.mergeable(message.next())) {
2456            message = message.next();
2457        }
2458        this.conversation.setCorrectingMessage(message);
2459        final Editable editable = binding.textinput.getText();
2460        this.conversation.setDraftMessage(editable.toString());
2461        this.binding.textinput.setText("");
2462        this.binding.textinput.append(message.getBody());
2463    }
2464
2465    private void highlightInConference(String nick) {
2466        final Editable editable = this.binding.textinput.getText();
2467        String oldString = editable.toString().trim();
2468        final int pos = this.binding.textinput.getSelectionStart();
2469        if (oldString.isEmpty() || pos == 0) {
2470            editable.insert(0, nick + ": ");
2471        } else {
2472            final char before = editable.charAt(pos - 1);
2473            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2474            if (before == '\n') {
2475                editable.insert(pos, nick + ": ");
2476            } else {
2477                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2478                    if (NickValidityChecker.check(
2479                            conversation,
2480                            Arrays.asList(
2481                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2482                        editable.insert(pos - 2, ", " + nick);
2483                        return;
2484                    }
2485                }
2486                editable.insert(
2487                        pos,
2488                        (Character.isWhitespace(before) ? "" : " ")
2489                                + nick
2490                                + (Character.isWhitespace(after) ? "" : " "));
2491                if (Character.isWhitespace(after)) {
2492                    this.binding.textinput.setSelection(
2493                            this.binding.textinput.getSelectionStart() + 1);
2494                }
2495            }
2496        }
2497    }
2498
2499    @Override
2500    public void startActivityForResult(Intent intent, int requestCode) {
2501        final Activity activity = getActivity();
2502        if (activity instanceof ConversationsActivity) {
2503            ((ConversationsActivity) activity).clearPendingViewIntent();
2504        }
2505        super.startActivityForResult(intent, requestCode);
2506    }
2507
2508    @Override
2509    public void onSaveInstanceState(@NotNull Bundle outState) {
2510        super.onSaveInstanceState(outState);
2511        if (conversation != null) {
2512            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2513            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2514            final Uri uri = pendingTakePhotoUri.peek();
2515            if (uri != null) {
2516                outState.putString(STATE_PHOTO_URI, uri.toString());
2517            }
2518            final ScrollState scrollState = getScrollPosition();
2519            if (scrollState != null) {
2520                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2521            }
2522            final ArrayList<Attachment> attachments =
2523                    mediaPreviewAdapter == null
2524                            ? new ArrayList<>()
2525                            : mediaPreviewAdapter.getAttachments();
2526            if (attachments.size() > 0) {
2527                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2528            }
2529        }
2530    }
2531
2532    @Override
2533    public void onActivityCreated(Bundle savedInstanceState) {
2534        super.onActivityCreated(savedInstanceState);
2535        if (savedInstanceState == null) {
2536            return;
2537        }
2538        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2539        ArrayList<Attachment> attachments =
2540                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2541        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2542        if (uuid != null) {
2543            QuickLoader.set(uuid);
2544            this.pendingConversationsUuid.push(uuid);
2545            if (attachments != null && attachments.size() > 0) {
2546                this.pendingMediaPreviews.push(attachments);
2547            }
2548            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2549            if (takePhotoUri != null) {
2550                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2551            }
2552            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2553        }
2554    }
2555
2556    @Override
2557    public void onStart() {
2558        super.onStart();
2559        if (this.reInitRequiredOnStart && this.conversation != null) {
2560            final Bundle extras = pendingExtras.pop();
2561            reInit(this.conversation, extras != null);
2562            if (extras != null) {
2563                processExtras(extras);
2564            }
2565        } else if (conversation == null
2566                && activity != null
2567                && activity.xmppConnectionService != null) {
2568            final String uuid = pendingConversationsUuid.pop();
2569            Log.d(
2570                    Config.LOGTAG,
2571                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2572                            + uuid);
2573            if (uuid != null) {
2574                findAndReInitByUuidOrArchive(uuid);
2575            }
2576        }
2577    }
2578
2579    @Override
2580    public void onStop() {
2581        super.onStop();
2582        final Activity activity = getActivity();
2583        messageListAdapter.unregisterListenerInAudioPlayer();
2584        if (activity == null || !activity.isChangingConfigurations()) {
2585            hideSoftKeyboard(activity);
2586            messageListAdapter.stopAudioPlayer();
2587        }
2588        if (this.conversation != null) {
2589            final String msg = this.binding.textinput.getText().toString();
2590            storeNextMessage(msg);
2591            updateChatState(this.conversation, msg);
2592            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2593        }
2594        this.reInitRequiredOnStart = true;
2595    }
2596
2597    private void updateChatState(final Conversation conversation, final String msg) {
2598        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2599        Account.State status = conversation.getAccount().getStatus();
2600        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2601            activity.xmppConnectionService.sendChatState(conversation);
2602        }
2603    }
2604
2605    private void saveMessageDraftStopAudioPlayer() {
2606        final Conversation previousConversation = this.conversation;
2607        if (this.activity == null || this.binding == null || previousConversation == null) {
2608            return;
2609        }
2610        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2611        final String msg = this.binding.textinput.getText().toString();
2612        storeNextMessage(msg);
2613        updateChatState(this.conversation, msg);
2614        messageListAdapter.stopAudioPlayer();
2615        mediaPreviewAdapter.clearPreviews();
2616        toggleInputMethod();
2617    }
2618
2619    public void reInit(final Conversation conversation, final Bundle extras) {
2620        QuickLoader.set(conversation.getUuid());
2621        final boolean changedConversation = this.conversation != conversation;
2622        if (changedConversation) {
2623            this.saveMessageDraftStopAudioPlayer();
2624        }
2625        this.clearPending();
2626        if (this.reInit(conversation, extras != null)) {
2627            if (extras != null) {
2628                processExtras(extras);
2629            }
2630            this.reInitRequiredOnStart = false;
2631        } else {
2632            this.reInitRequiredOnStart = true;
2633            pendingExtras.push(extras);
2634        }
2635        resetUnreadMessagesCount();
2636    }
2637
2638    private void reInit(Conversation conversation) {
2639        reInit(conversation, false);
2640    }
2641
2642    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2643        if (conversation == null) {
2644            return false;
2645        }
2646        final Conversation originalConversation = this.conversation;
2647        this.conversation = conversation;
2648        // once we set the conversation all is good and it will automatically do the right thing in
2649        // onStart()
2650        if (this.activity == null || this.binding == null) {
2651            return false;
2652        }
2653
2654        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2655            activity.onConversationArchived(this.conversation);
2656            return false;
2657        }
2658
2659        setThread(conversation.getThread());
2660
2661        stopScrolling();
2662        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2663
2664        if (this.conversation.isRead() && hasExtras) {
2665            Log.d(Config.LOGTAG, "trimming conversation");
2666            this.conversation.trim();
2667        }
2668
2669        setupIme();
2670
2671        final boolean scrolledToBottomAndNoPending =
2672                this.scrolledToBottom() && pendingScrollState.peek() == null;
2673
2674        this.binding.textSendButton.setContentDescription(
2675                activity.getString(R.string.send_message_to_x, conversation.getName()));
2676        this.binding.textinput.setKeyboardListener(null);
2677        this.binding.textinput.setText("");
2678        final boolean participating =
2679                conversation.getMode() == Conversational.MODE_SINGLE
2680                        || conversation.getMucOptions().participating();
2681        if (participating) {
2682            this.binding.textinput.append(this.conversation.getNextMessage());
2683        }
2684        this.binding.textinput.setKeyboardListener(this);
2685        messageListAdapter.updatePreferences();
2686        refresh(false);
2687        activity.invalidateOptionsMenu();
2688        this.conversation.messagesLoaded.set(true);
2689        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2690
2691        if (hasExtras || scrolledToBottomAndNoPending) {
2692            resetUnreadMessagesCount();
2693            synchronized (this.messageList) {
2694                Log.d(Config.LOGTAG, "jump to first unread message");
2695                final Message first = conversation.getFirstUnreadMessage();
2696                final int bottom = Math.max(0, this.messageList.size() - 1);
2697                final int pos;
2698                final boolean jumpToBottom;
2699                if (first == null) {
2700                    pos = bottom;
2701                    jumpToBottom = true;
2702                } else {
2703                    int i = getIndexOf(first.getUuid(), this.messageList);
2704                    pos = i < 0 ? bottom : i;
2705                    jumpToBottom = false;
2706                }
2707                setSelection(pos, jumpToBottom);
2708            }
2709        }
2710
2711        this.binding.messagesView.post(this::fireReadEvent);
2712        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2713        // layout which might be unnecessary since we can *see* it
2714        activity.xmppConnectionService
2715                .getNotificationService()
2716                .setOpenConversation(this.conversation);
2717
2718        if (commandAdapter != null && conversation != originalConversation) {
2719            originalConversation.setupViewPager(null, null);
2720            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2721            refreshCommands();
2722        }
2723        if (commandAdapter == null && conversation != null) {
2724            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2725            commandAdapter = new CommandAdapter((XmppActivity) getActivity());
2726            binding.commandsView.setAdapter(commandAdapter);
2727            binding.commandsView.setOnItemClickListener((parent, view, position, id) -> {
2728                final Element command = commandAdapter.getItem(position);
2729                activity.startCommand(conversation.getAccount(), command.getAttributeAsJid("jid"), command.getAttribute("node"));
2730            });
2731            refreshCommands();
2732        }
2733
2734        return true;
2735    }
2736
2737    public void refreshForNewCaps() {
2738        refreshCommands();
2739    }
2740
2741    protected void refreshCommands() {
2742        if (commandAdapter == null) return;
2743
2744        Jid commandJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2745        if (commandJid == null) {
2746            conversation.hideViewPager();
2747        } else {
2748            conversation.showViewPager();
2749            activity.xmppConnectionService.fetchCommands(conversation.getAccount(), commandJid, (a, iq) -> {
2750                if (activity == null) return;
2751
2752                activity.runOnUiThread(() -> {
2753                    if (iq.getType() == IqPacket.TYPE.RESULT) {
2754                        binding.commandsViewProgressbar.setVisibility(View.GONE);
2755                        commandAdapter.clear();
2756                        for (Element child : iq.query().getChildren()) {
2757                            if (!"item".equals(child.getName()) || !Namespace.DISCO_ITEMS.equals(child.getNamespace())) continue;
2758                            commandAdapter.add(child);
2759                        }
2760                    }
2761
2762                    if (commandAdapter.getCount() < 1) conversation.hideViewPager();
2763                });
2764            });
2765        }
2766    }
2767
2768    private void resetUnreadMessagesCount() {
2769        lastMessageUuid = null;
2770        hideUnreadMessagesCount();
2771    }
2772
2773    private void hideUnreadMessagesCount() {
2774        if (this.binding == null) {
2775            return;
2776        }
2777        this.binding.scrollToBottomButton.setEnabled(false);
2778        this.binding.scrollToBottomButton.hide();
2779        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2780    }
2781
2782    private void setSelection(int pos, boolean jumpToBottom) {
2783        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2784        this.binding.messagesView.post(
2785                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2786        this.binding.messagesView.post(this::fireReadEvent);
2787    }
2788
2789    private boolean scrolledToBottom() {
2790        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2791    }
2792
2793    private void processExtras(final Bundle extras) {
2794        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2795        final String text = extras.getString(Intent.EXTRA_TEXT);
2796        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2797        final String node = extras.getString(ConversationsActivity.EXTRA_NODE);
2798        final String postInitAction =
2799                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2800        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2801        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2802        final boolean doNotAppend =
2803                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2804        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2805        final List<Uri> uris = extractUris(extras);
2806        if (uris != null && uris.size() > 0) {
2807            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2808                mediaPreviewAdapter.addMediaPreviews(
2809                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2810            } else {
2811                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2812                mediaPreviewAdapter.addMediaPreviews(
2813                        Attachment.of(getActivity(), cleanedUris, type));
2814            }
2815            toggleInputMethod();
2816            return;
2817        }
2818        if (nick != null) {
2819            if (pm) {
2820                Jid jid = conversation.getJid();
2821                try {
2822                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2823                    privateMessageWith(next);
2824                } catch (final IllegalArgumentException ignored) {
2825                    // do nothing
2826                }
2827            } else {
2828                final MucOptions mucOptions = conversation.getMucOptions();
2829                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2830                    highlightInConference(nick);
2831                }
2832            }
2833        } else {
2834            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2835                mediaPreviewAdapter.addMediaPreviews(
2836                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2837                toggleInputMethod();
2838                return;
2839            } else if (text != null && asQuote) {
2840                quoteText(text);
2841            } else {
2842                appendText(text, doNotAppend);
2843            }
2844        }
2845        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2846            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2847            return;
2848        }
2849        if ("message".equals(postInitAction)) {
2850            binding.conversationViewPager.post(() -> {
2851                binding.conversationViewPager.setCurrentItem(0);
2852            });
2853        }
2854        if ("command".equals(postInitAction)) {
2855            binding.conversationViewPager.post(() -> {
2856                PagerAdapter adapter = binding.conversationViewPager.getAdapter();
2857                if (adapter != null && adapter.getCount() > 1) {
2858                    binding.conversationViewPager.setCurrentItem(1);
2859                }
2860                final String jid = extras.getString(ConversationsActivity.EXTRA_JID);
2861                Jid commandJid = null;
2862                if (jid != null) {
2863                    try {
2864                        commandJid = Jid.of(jid);
2865                    } catch (final IllegalArgumentException e) { }
2866                }
2867                if (commandJid == null || !commandJid.isFullJid()) {
2868                    final Jid discoJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2869                    if (discoJid != null) commandJid = discoJid;
2870                }
2871                if (node != null && commandJid != null) {
2872                    conversation.startCommand(commandFor(commandJid, node), activity.xmppConnectionService);
2873                }
2874            });
2875            return;
2876        }
2877        final Message message =
2878                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2879        if (message != null) {
2880            startDownloadable(message);
2881        }
2882    }
2883
2884    private Element commandFor(final Jid jid, final String node) {
2885        if (commandAdapter != null) {
2886            for (int i = 0; i < commandAdapter.getCount(); i++) {
2887                Element command = commandAdapter.getItem(i);
2888                final String commandNode = command.getAttribute("node");
2889                if (commandNode == null || !commandNode.equals(node)) continue;
2890
2891                final Jid commandJid = command.getAttributeAsJid("jid");
2892                if (commandJid != null && !commandJid.asBareJid().equals(jid.asBareJid())) continue;
2893
2894                return command;
2895            }
2896        }
2897
2898        return new Element("command", Namespace.COMMANDS).setAttribute("name", node).setAttribute("node", node).setAttribute("jid", jid);
2899    }
2900
2901    private List<Uri> extractUris(final Bundle extras) {
2902        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2903        if (uris != null) {
2904            return uris;
2905        }
2906        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2907        if (uri != null) {
2908            return Collections.singletonList(uri);
2909        } else {
2910            return null;
2911        }
2912    }
2913
2914    private List<Uri> cleanUris(final List<Uri> uris) {
2915        final Iterator<Uri> iterator = uris.iterator();
2916        while (iterator.hasNext()) {
2917            final Uri uri = iterator.next();
2918            if (FileBackend.weOwnFile(uri)) {
2919                iterator.remove();
2920                Toast.makeText(
2921                                getActivity(),
2922                                R.string.security_violation_not_attaching_file,
2923                                Toast.LENGTH_SHORT)
2924                        .show();
2925            }
2926        }
2927        return uris;
2928    }
2929
2930    private boolean showBlockSubmenu(View view) {
2931        final Jid jid = conversation.getJid();
2932        final boolean showReject =
2933                !conversation.isWithStranger()
2934                        && conversation
2935                                .getContact()
2936                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2937        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2938        popupMenu.inflate(R.menu.block);
2939        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2940        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2941        popupMenu.setOnMenuItemClickListener(
2942                menuItem -> {
2943                    Blockable blockable;
2944                    switch (menuItem.getItemId()) {
2945                        case R.id.reject:
2946                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2947                                    conversation.getContact());
2948                            updateSnackBar(conversation);
2949                            return true;
2950                        case R.id.block_domain:
2951                            blockable =
2952                                    conversation
2953                                            .getAccount()
2954                                            .getRoster()
2955                                            .getContact(jid.getDomain());
2956                            break;
2957                        default:
2958                            blockable = conversation;
2959                    }
2960                    BlockContactDialog.show(activity, blockable);
2961                    return true;
2962                });
2963        popupMenu.show();
2964        return true;
2965    }
2966
2967    private void updateSnackBar(final Conversation conversation) {
2968        final Account account = conversation.getAccount();
2969        final XmppConnection connection = account.getXmppConnection();
2970        final int mode = conversation.getMode();
2971        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2972        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2973            return;
2974        }
2975        if (account.getStatus() == Account.State.DISABLED) {
2976            showSnackbar(
2977                    R.string.this_account_is_disabled,
2978                    R.string.enable,
2979                    this.mEnableAccountListener);
2980        } else if (conversation.isBlocked()) {
2981            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2982        } else if (contact != null
2983                && !contact.showInRoster()
2984                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2985            showSnackbar(
2986                    R.string.contact_added_you,
2987                    R.string.add_back,
2988                    this.mAddBackClickListener,
2989                    this.mLongPressBlockListener);
2990        } else if (contact != null
2991                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2992            showSnackbar(
2993                    R.string.contact_asks_for_presence_subscription,
2994                    R.string.allow,
2995                    this.mAllowPresenceSubscription,
2996                    this.mLongPressBlockListener);
2997        } else if (mode == Conversation.MODE_MULTI
2998                && !conversation.getMucOptions().online()
2999                && account.getStatus() == Account.State.ONLINE) {
3000            switch (conversation.getMucOptions().getError()) {
3001                case NICK_IN_USE:
3002                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
3003                    break;
3004                case NO_RESPONSE:
3005                    showSnackbar(R.string.joining_conference, 0, null);
3006                    break;
3007                case SERVER_NOT_FOUND:
3008                    if (conversation.receivedMessagesCount() > 0) {
3009                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
3010                    } else {
3011                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
3012                    }
3013                    break;
3014                case REMOTE_SERVER_TIMEOUT:
3015                    if (conversation.receivedMessagesCount() > 0) {
3016                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
3017                    } else {
3018                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
3019                    }
3020                    break;
3021                case PASSWORD_REQUIRED:
3022                    showSnackbar(
3023                            R.string.conference_requires_password,
3024                            R.string.enter_password,
3025                            enterPassword);
3026                    break;
3027                case BANNED:
3028                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
3029                    break;
3030                case MEMBERS_ONLY:
3031                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
3032                    break;
3033                case RESOURCE_CONSTRAINT:
3034                    showSnackbar(
3035                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
3036                    break;
3037                case KICKED:
3038                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
3039                    break;
3040                case TECHNICAL_PROBLEMS:
3041                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
3042                    break;
3043                case UNKNOWN:
3044                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
3045                    break;
3046                case INVALID_NICK:
3047                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
3048                case SHUTDOWN:
3049                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
3050                    break;
3051                case DESTROYED:
3052                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
3053                    break;
3054                case NON_ANONYMOUS:
3055                    showSnackbar(
3056                            R.string.group_chat_will_make_your_jabber_id_public,
3057                            R.string.join,
3058                            acceptJoin);
3059                    break;
3060                default:
3061                    hideSnackbar();
3062                    break;
3063            }
3064        } else if (account.hasPendingPgpIntent(conversation)) {
3065            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
3066        } else if (connection != null
3067                && connection.getFeatures().blocking()
3068                && conversation.countMessages() != 0
3069                && !conversation.isBlocked()
3070                && conversation.isWithStranger()) {
3071            showSnackbar(
3072                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
3073        } else {
3074            hideSnackbar();
3075        }
3076    }
3077
3078    @Override
3079    public void refresh() {
3080        if (this.binding == null) {
3081            Log.d(
3082                    Config.LOGTAG,
3083                    "ConversationFragment.refresh() skipped updated because view binding was null");
3084            return;
3085        }
3086        if (this.conversation != null
3087                && this.activity != null
3088                && this.activity.xmppConnectionService != null) {
3089            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
3090                activity.onConversationArchived(this.conversation);
3091                return;
3092            }
3093        }
3094        this.refresh(true);
3095    }
3096
3097    private void refresh(boolean notifyConversationRead) {
3098        synchronized (this.messageList) {
3099            if (this.conversation != null) {
3100                conversation.populateWithMessages(this.messageList);
3101                updateSnackBar(conversation);
3102                updateStatusMessages();
3103                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
3104                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
3105                    binding.unreadCountCustomView.setUnreadCount(
3106                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
3107                }
3108                this.messageListAdapter.notifyDataSetChanged();
3109                updateChatMsgHint();
3110                if (notifyConversationRead && activity != null) {
3111                    binding.messagesView.post(this::fireReadEvent);
3112                }
3113                updateSendButton();
3114                updateEditablity();
3115            }
3116        }
3117    }
3118
3119    protected void messageSent() {
3120        mSendingPgpMessage.set(false);
3121        this.binding.textinput.setText("");
3122        if (conversation.setCorrectingMessage(null)) {
3123            this.binding.textinput.append(conversation.getDraftMessage());
3124            conversation.setDraftMessage(null);
3125        }
3126        storeNextMessage();
3127        updateChatMsgHint();
3128        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
3129        final boolean prefScrollToBottom =
3130                p.getBoolean(
3131                        "scroll_to_bottom",
3132                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
3133        if (prefScrollToBottom || scrolledToBottom()) {
3134            new Handler()
3135                    .post(
3136                            () -> {
3137                                int size = messageList.size();
3138                                this.binding.messagesView.setSelection(size - 1);
3139                            });
3140        }
3141    }
3142
3143    private boolean storeNextMessage() {
3144        return storeNextMessage(this.binding.textinput.getText().toString());
3145    }
3146
3147    private boolean storeNextMessage(String msg) {
3148        final boolean participating =
3149                conversation.getMode() == Conversational.MODE_SINGLE
3150                        || conversation.getMucOptions().participating();
3151        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
3152                && participating
3153                && this.conversation.setNextMessage(msg)) {
3154            this.activity.xmppConnectionService.updateConversation(this.conversation);
3155            return true;
3156        }
3157        return false;
3158    }
3159
3160    public void doneSendingPgpMessage() {
3161        mSendingPgpMessage.set(false);
3162    }
3163
3164    public long getMaxHttpUploadSize(Conversation conversation) {
3165        final XmppConnection connection = conversation.getAccount().getXmppConnection();
3166        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
3167    }
3168
3169    private void updateEditablity() {
3170        boolean canWrite =
3171                this.conversation.getMode() == Conversation.MODE_SINGLE
3172                        || this.conversation.getMucOptions().participating()
3173                        || this.conversation.getNextCounterpart() != null;
3174        this.binding.textinput.setFocusable(canWrite);
3175        this.binding.textinput.setFocusableInTouchMode(canWrite);
3176        this.binding.textSendButton.setEnabled(canWrite);
3177        this.binding.textinput.setCursorVisible(canWrite);
3178        this.binding.textinput.setEnabled(canWrite);
3179    }
3180
3181    public void updateSendButton() {
3182        boolean hasAttachments =
3183                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
3184        final Conversation c = this.conversation;
3185        final Presence.Status status;
3186        final String text =
3187                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
3188        final SendButtonAction action;
3189        if (hasAttachments) {
3190            action = SendButtonAction.TEXT;
3191        } else {
3192            action = SendButtonTool.getAction(getActivity(), c, text);
3193        }
3194        if (c.getAccount().getStatus() == Account.State.ONLINE) {
3195            if (activity != null
3196                    && activity.xmppConnectionService != null
3197                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
3198                status = Presence.Status.OFFLINE;
3199            } else if (c.getMode() == Conversation.MODE_SINGLE) {
3200                status = c.getContact().getShownStatus();
3201            } else {
3202                status =
3203                        c.getMucOptions().online()
3204                                ? Presence.Status.ONLINE
3205                                : Presence.Status.OFFLINE;
3206            }
3207        } else {
3208            status = Presence.Status.OFFLINE;
3209        }
3210        this.binding.textSendButton.setTag(action);
3211        final Activity activity = getActivity();
3212        if (activity != null) {
3213            this.binding.textSendButton.setImageResource(
3214                    SendButtonTool.getSendButtonImageResource(activity, action, status));
3215        }
3216
3217        ViewGroup.LayoutParams params = binding.threadIdenticonLayout.getLayoutParams();
3218        if (identiconWidth < 0) identiconWidth = params.width;
3219        if (hasAttachments || binding.textinput.getText().length() > 0) {
3220            binding.conversationViewPager.setCurrentItem(0);
3221            params.width = conversation.getThread() == null ? 0 : identiconWidth;
3222        } else {
3223            params.width = identiconWidth;
3224        }
3225        binding.threadIdenticonLayout.setLayoutParams(params);
3226    }
3227
3228    protected void updateStatusMessages() {
3229        DateSeparator.addAll(this.messageList);
3230        if (showLoadMoreMessages(conversation)) {
3231            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
3232        }
3233        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3234            ChatState state = conversation.getIncomingChatState();
3235            if (state == ChatState.COMPOSING) {
3236                this.messageList.add(
3237                        Message.createStatusMessage(
3238                                conversation,
3239                                getString(R.string.contact_is_typing, conversation.getName())));
3240            } else if (state == ChatState.PAUSED) {
3241                this.messageList.add(
3242                        Message.createStatusMessage(
3243                                conversation,
3244                                getString(
3245                                        R.string.contact_has_stopped_typing,
3246                                        conversation.getName())));
3247            } else {
3248                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3249                    final Message message = this.messageList.get(i);
3250                    if (message.getType() != Message.TYPE_STATUS) {
3251                        if (message.getStatus() == Message.STATUS_RECEIVED) {
3252                            return;
3253                        } else {
3254                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
3255                                this.messageList.add(
3256                                        i + 1,
3257                                        Message.createStatusMessage(
3258                                                conversation,
3259                                                getString(
3260                                                        R.string.contact_has_read_up_to_this_point,
3261                                                        conversation.getName())));
3262                                return;
3263                            }
3264                        }
3265                    }
3266                }
3267            }
3268        } else {
3269            final MucOptions mucOptions = conversation.getMucOptions();
3270            final List<MucOptions.User> allUsers = mucOptions.getUsers();
3271            final Set<ReadByMarker> addedMarkers = new HashSet<>();
3272            ChatState state = ChatState.COMPOSING;
3273            List<MucOptions.User> users =
3274                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3275            if (users.size() == 0) {
3276                state = ChatState.PAUSED;
3277                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3278            }
3279            if (mucOptions.isPrivateAndNonAnonymous()) {
3280                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3281                    final Set<ReadByMarker> markersForMessage =
3282                            messageList.get(i).getReadByMarkers();
3283                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3284                    for (ReadByMarker marker : markersForMessage) {
3285                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3286                            addedMarkers.add(
3287                                    marker); // may be put outside this condition. set should do
3288                                             // dedup anyway
3289                            MucOptions.User user = mucOptions.findUser(marker);
3290                            if (user != null && !users.contains(user)) {
3291                                shownMarkers.add(user);
3292                            }
3293                        }
3294                    }
3295                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3296                    final Message statusMessage;
3297                    final int size = shownMarkers.size();
3298                    if (size > 1) {
3299                        final String body;
3300                        if (size <= 4) {
3301                            body =
3302                                    getString(
3303                                            R.string.contacts_have_read_up_to_this_point,
3304                                            UIHelper.concatNames(shownMarkers));
3305                        } else if (ReadByMarker.allUsersRepresented(
3306                                allUsers, markersForMessage, markerForSender)) {
3307                            body = getString(R.string.everyone_has_read_up_to_this_point);
3308                        } else {
3309                            body =
3310                                    getString(
3311                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3312                                            UIHelper.concatNames(shownMarkers, 3),
3313                                            size - 3);
3314                        }
3315                        statusMessage = Message.createStatusMessage(conversation, body);
3316                        statusMessage.setCounterparts(shownMarkers);
3317                    } else if (size == 1) {
3318                        statusMessage =
3319                                Message.createStatusMessage(
3320                                        conversation,
3321                                        getString(
3322                                                R.string.contact_has_read_up_to_this_point,
3323                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3324                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3325                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3326                    } else {
3327                        statusMessage = null;
3328                    }
3329                    if (statusMessage != null) {
3330                        this.messageList.add(i + 1, statusMessage);
3331                    }
3332                    addedMarkers.add(markerForSender);
3333                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3334                        break;
3335                    }
3336                }
3337            }
3338            if (users.size() > 0) {
3339                Message statusMessage;
3340                if (users.size() == 1) {
3341                    MucOptions.User user = users.get(0);
3342                    int id =
3343                            state == ChatState.COMPOSING
3344                                    ? R.string.contact_is_typing
3345                                    : R.string.contact_has_stopped_typing;
3346                    statusMessage =
3347                            Message.createStatusMessage(
3348                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3349                    statusMessage.setTrueCounterpart(user.getRealJid());
3350                    statusMessage.setCounterpart(user.getFullJid());
3351                } else {
3352                    int id =
3353                            state == ChatState.COMPOSING
3354                                    ? R.string.contacts_are_typing
3355                                    : R.string.contacts_have_stopped_typing;
3356                    statusMessage =
3357                            Message.createStatusMessage(
3358                                    conversation, getString(id, UIHelper.concatNames(users)));
3359                    statusMessage.setCounterparts(users);
3360                }
3361                this.messageList.add(statusMessage);
3362            }
3363        }
3364    }
3365
3366    private void stopScrolling() {
3367        long now = SystemClock.uptimeMillis();
3368        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3369        binding.messagesView.dispatchTouchEvent(cancel);
3370    }
3371
3372    private boolean showLoadMoreMessages(final Conversation c) {
3373        if (activity == null || activity.xmppConnectionService == null) {
3374            return false;
3375        }
3376        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3377        final MessageArchiveService service =
3378                activity.xmppConnectionService.getMessageArchiveService();
3379        return mam
3380                && (c.getLastClearHistory().getTimestamp() != 0
3381                        || (c.countMessages() == 0
3382                                && c.messagesLoaded.get()
3383                                && c.hasMessagesLeftOnServer()
3384                                && !service.queryInProgress(c)));
3385    }
3386
3387    private boolean hasMamSupport(final Conversation c) {
3388        if (c.getMode() == Conversation.MODE_SINGLE) {
3389            final XmppConnection connection = c.getAccount().getXmppConnection();
3390            return connection != null && connection.getFeatures().mam();
3391        } else {
3392            return c.getMucOptions().mamSupport();
3393        }
3394    }
3395
3396    protected void showSnackbar(
3397            final int message, final int action, final OnClickListener clickListener) {
3398        showSnackbar(message, action, clickListener, null);
3399    }
3400
3401    protected void showSnackbar(
3402            final int message,
3403            final int action,
3404            final OnClickListener clickListener,
3405            final View.OnLongClickListener longClickListener) {
3406        this.binding.snackbar.setVisibility(View.VISIBLE);
3407        this.binding.snackbar.setOnClickListener(null);
3408        this.binding.snackbarMessage.setText(message);
3409        this.binding.snackbarMessage.setOnClickListener(null);
3410        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3411        if (action != 0) {
3412            this.binding.snackbarAction.setText(action);
3413        }
3414        this.binding.snackbarAction.setOnClickListener(clickListener);
3415        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3416    }
3417
3418    protected void hideSnackbar() {
3419        this.binding.snackbar.setVisibility(View.GONE);
3420    }
3421
3422    protected void sendMessage(Message message) {
3423        activity.xmppConnectionService.sendMessage(message);
3424        messageSent();
3425    }
3426
3427    protected void sendPgpMessage(final Message message) {
3428        final XmppConnectionService xmppService = activity.xmppConnectionService;
3429        final Contact contact = message.getConversation().getContact();
3430        if (!activity.hasPgp()) {
3431            activity.showInstallPgpDialog();
3432            return;
3433        }
3434        if (conversation.getAccount().getPgpSignature() == null) {
3435            activity.announcePgp(
3436                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3437            return;
3438        }
3439        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3440            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3441        }
3442        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3443            if (contact.getPgpKeyId() != 0) {
3444                xmppService
3445                        .getPgpEngine()
3446                        .hasKey(
3447                                contact,
3448                                new UiCallback<Contact>() {
3449
3450                                    @Override
3451                                    public void userInputRequired(
3452                                            PendingIntent pi, Contact contact) {
3453                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3454                                    }
3455
3456                                    @Override
3457                                    public void success(Contact contact) {
3458                                        encryptTextMessage(message);
3459                                    }
3460
3461                                    @Override
3462                                    public void error(int error, Contact contact) {
3463                                        activity.runOnUiThread(
3464                                                () ->
3465                                                        Toast.makeText(
3466                                                                        activity,
3467                                                                        R.string
3468                                                                                .unable_to_connect_to_keychain,
3469                                                                        Toast.LENGTH_SHORT)
3470                                                                .show());
3471                                        mSendingPgpMessage.set(false);
3472                                    }
3473                                });
3474
3475            } else {
3476                showNoPGPKeyDialog(
3477                        false,
3478                        (dialog, which) -> {
3479                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3480                            xmppService.updateConversation(conversation);
3481                            message.setEncryption(Message.ENCRYPTION_NONE);
3482                            xmppService.sendMessage(message);
3483                            messageSent();
3484                        });
3485            }
3486        } else {
3487            if (conversation.getMucOptions().pgpKeysInUse()) {
3488                if (!conversation.getMucOptions().everybodyHasKeys()) {
3489                    Toast warning =
3490                            Toast.makeText(
3491                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3492                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3493                    warning.show();
3494                }
3495                encryptTextMessage(message);
3496            } else {
3497                showNoPGPKeyDialog(
3498                        true,
3499                        (dialog, which) -> {
3500                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3501                            message.setEncryption(Message.ENCRYPTION_NONE);
3502                            xmppService.updateConversation(conversation);
3503                            xmppService.sendMessage(message);
3504                            messageSent();
3505                        });
3506            }
3507        }
3508    }
3509
3510    public void encryptTextMessage(Message message) {
3511        activity.xmppConnectionService
3512                .getPgpEngine()
3513                .encrypt(
3514                        message,
3515                        new UiCallback<Message>() {
3516
3517                            @Override
3518                            public void userInputRequired(PendingIntent pi, Message message) {
3519                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3520                            }
3521
3522                            @Override
3523                            public void success(Message message) {
3524                                // TODO the following two call can be made before the callback
3525                                getActivity().runOnUiThread(() -> messageSent());
3526                            }
3527
3528                            @Override
3529                            public void error(final int error, Message message) {
3530                                getActivity()
3531                                        .runOnUiThread(
3532                                                () -> {
3533                                                    doneSendingPgpMessage();
3534                                                    Toast.makeText(
3535                                                                    getActivity(),
3536                                                                    error == 0
3537                                                                            ? R.string
3538                                                                                    .unable_to_connect_to_keychain
3539                                                                            : error,
3540                                                                    Toast.LENGTH_SHORT)
3541                                                            .show();
3542                                                });
3543                            }
3544                        });
3545    }
3546
3547    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
3548        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
3549        builder.setIconAttribute(android.R.attr.alertDialogIcon);
3550        if (plural) {
3551            builder.setTitle(getString(R.string.no_pgp_keys));
3552            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3553        } else {
3554            builder.setTitle(getString(R.string.no_pgp_key));
3555            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3556        }
3557        builder.setNegativeButton(getString(R.string.cancel), null);
3558        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3559        builder.create().show();
3560    }
3561
3562    public void appendText(String text, final boolean doNotAppend) {
3563        if (text == null) {
3564            return;
3565        }
3566        final Editable editable = this.binding.textinput.getText();
3567        String previous = editable == null ? "" : editable.toString();
3568        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3569            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3570                    .show();
3571            return;
3572        }
3573        if (UIHelper.isLastLineQuote(previous)) {
3574            text = '\n' + text;
3575        } else if (previous.length() != 0
3576                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3577            text = " " + text;
3578        }
3579        this.binding.textinput.append(text);
3580    }
3581
3582    @Override
3583    public boolean onEnterPressed(final boolean isCtrlPressed) {
3584        if (isCtrlPressed || enterIsSend()) {
3585            sendMessage();
3586            return true;
3587        }
3588        return false;
3589    }
3590
3591    private boolean enterIsSend() {
3592        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3593        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3594    }
3595
3596    public boolean onArrowUpCtrlPressed() {
3597        final Message lastEditableMessage =
3598                conversation == null ? null : conversation.getLastEditableMessage();
3599        if (lastEditableMessage != null) {
3600            correctMessage(lastEditableMessage);
3601            return true;
3602        } else {
3603            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3604                    .show();
3605            return false;
3606        }
3607    }
3608
3609    @Override
3610    public void onTypingStarted() {
3611        final XmppConnectionService service =
3612                activity == null ? null : activity.xmppConnectionService;
3613        if (service == null) {
3614            return;
3615        }
3616        final Account.State status = conversation.getAccount().getStatus();
3617        if (status == Account.State.ONLINE
3618                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3619            service.sendChatState(conversation);
3620        }
3621        runOnUiThread(this::updateSendButton);
3622    }
3623
3624    @Override
3625    public void onTypingStopped() {
3626        final XmppConnectionService service =
3627                activity == null ? null : activity.xmppConnectionService;
3628        if (service == null) {
3629            return;
3630        }
3631        final Account.State status = conversation.getAccount().getStatus();
3632        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3633            service.sendChatState(conversation);
3634        }
3635    }
3636
3637    @Override
3638    public void onTextDeleted() {
3639        final XmppConnectionService service =
3640                activity == null ? null : activity.xmppConnectionService;
3641        if (service == null) {
3642            return;
3643        }
3644        final Account.State status = conversation.getAccount().getStatus();
3645        if (status == Account.State.ONLINE
3646                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3647            service.sendChatState(conversation);
3648        }
3649        if (storeNextMessage()) {
3650            runOnUiThread(
3651                    () -> {
3652                        if (activity == null) {
3653                            return;
3654                        }
3655                        activity.onConversationsListItemUpdated();
3656                    });
3657        }
3658        runOnUiThread(this::updateSendButton);
3659    }
3660
3661    @Override
3662    public void onTextChanged() {
3663        if (conversation != null && conversation.getCorrectingMessage() != null) {
3664            runOnUiThread(this::updateSendButton);
3665        }
3666    }
3667
3668    @Override
3669    public boolean onTabPressed(boolean repeated) {
3670        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3671            return false;
3672        }
3673        if (repeated) {
3674            completionIndex++;
3675        } else {
3676            lastCompletionLength = 0;
3677            completionIndex = 0;
3678            final String content = this.binding.textinput.getText().toString();
3679            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3680            int start =
3681                    lastCompletionCursor > 0
3682                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3683                            : 0;
3684            firstWord = start == 0;
3685            incomplete = content.substring(start, lastCompletionCursor);
3686        }
3687        List<String> completions = new ArrayList<>();
3688        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3689            String name = user.getName();
3690            if (name != null && name.startsWith(incomplete)) {
3691                completions.add(name + (firstWord ? ": " : " "));
3692            }
3693        }
3694        Collections.sort(completions);
3695        if (completions.size() > completionIndex) {
3696            String completion = completions.get(completionIndex).substring(incomplete.length());
3697            this.binding
3698                    .textinput
3699                    .getEditableText()
3700                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3701            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3702            lastCompletionLength = completion.length();
3703        } else {
3704            completionIndex = -1;
3705            this.binding
3706                    .textinput
3707                    .getEditableText()
3708                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3709            lastCompletionLength = 0;
3710        }
3711        return true;
3712    }
3713
3714    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3715        try {
3716            getActivity()
3717                    .startIntentSenderForResult(
3718                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
3719        } catch (final SendIntentException ignored) {
3720        }
3721    }
3722
3723    @Override
3724    public void onBackendConnected() {
3725        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3726        String uuid = pendingConversationsUuid.pop();
3727        if (uuid != null) {
3728            if (!findAndReInitByUuidOrArchive(uuid)) {
3729                return;
3730            }
3731        } else {
3732            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3733                clearPending();
3734                activity.onConversationArchived(conversation);
3735                return;
3736            }
3737        }
3738        ActivityResult activityResult = postponedActivityResult.pop();
3739        if (activityResult != null) {
3740            handleActivityResult(activityResult);
3741        }
3742        clearPending();
3743    }
3744
3745    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3746        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3747        if (conversation == null) {
3748            clearPending();
3749            activity.onConversationArchived(null);
3750            return false;
3751        }
3752        reInit(conversation);
3753        ScrollState scrollState = pendingScrollState.pop();
3754        String lastMessageUuid = pendingLastMessageUuid.pop();
3755        List<Attachment> attachments = pendingMediaPreviews.pop();
3756        if (scrollState != null) {
3757            setScrollPosition(scrollState, lastMessageUuid);
3758        }
3759        if (attachments != null && attachments.size() > 0) {
3760            Log.d(Config.LOGTAG, "had attachments on restore");
3761            mediaPreviewAdapter.addMediaPreviews(attachments);
3762            toggleInputMethod();
3763        }
3764        return true;
3765    }
3766
3767    private void clearPending() {
3768        if (postponedActivityResult.clear()) {
3769            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3770            if (pendingTakePhotoUri.clear()) {
3771                Log.e(Config.LOGTAG, "cleared pending photo uri");
3772            }
3773        }
3774        if (pendingScrollState.clear()) {
3775            Log.e(Config.LOGTAG, "cleared scroll state");
3776        }
3777        if (pendingConversationsUuid.clear()) {
3778            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3779        }
3780        if (pendingMediaPreviews.clear()) {
3781            Log.e(Config.LOGTAG, "cleared pending media previews");
3782        }
3783    }
3784
3785    public Conversation getConversation() {
3786        return conversation;
3787    }
3788
3789    @Override
3790    public void onContactPictureLongClicked(View v, final Message message) {
3791        final String fingerprint;
3792        if (message.getEncryption() == Message.ENCRYPTION_PGP
3793                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3794            fingerprint = "pgp";
3795        } else {
3796            fingerprint = message.getFingerprint();
3797        }
3798        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3799        final Contact contact = message.getContact();
3800        if (message.getStatus() <= Message.STATUS_RECEIVED
3801                && (contact == null || !contact.isSelf())) {
3802            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3803                final Jid cp = message.getCounterpart();
3804                if (cp == null || cp.isBareJid()) {
3805                    return;
3806                }
3807                final Jid tcp = message.getTrueCounterpart();
3808                final User userByRealJid =
3809                        tcp != null
3810                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3811                                : null;
3812                final User user =
3813                        userByRealJid != null
3814                                ? userByRealJid
3815                                : conversation.getMucOptions().findUserByFullJid(cp);
3816                popupMenu.inflate(R.menu.muc_details_context);
3817                final Menu menu = popupMenu.getMenu();
3818                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3819                        activity, menu, conversation, user);
3820                popupMenu.setOnMenuItemClickListener(
3821                        menuItem ->
3822                                MucDetailsContextMenuHelper.onContextItemSelected(
3823                                        menuItem, user, activity, fingerprint));
3824            } else {
3825                popupMenu.inflate(R.menu.one_on_one_context);
3826                popupMenu.setOnMenuItemClickListener(
3827                        item -> {
3828                            switch (item.getItemId()) {
3829                                case R.id.action_contact_details:
3830                                    activity.switchToContactDetails(
3831                                            message.getContact(), fingerprint);
3832                                    break;
3833                                case R.id.action_show_qr_code:
3834                                    activity.showQrCode(
3835                                            "xmpp:"
3836                                                    + message.getContact()
3837                                                            .getJid()
3838                                                            .asBareJid()
3839                                                            .toEscapedString());
3840                                    break;
3841                            }
3842                            return true;
3843                        });
3844            }
3845        } else {
3846            popupMenu.inflate(R.menu.account_context);
3847            final Menu menu = popupMenu.getMenu();
3848            menu.findItem(R.id.action_manage_accounts)
3849                    .setVisible(QuickConversationsService.isConversations());
3850            popupMenu.setOnMenuItemClickListener(
3851                    item -> {
3852                        final XmppActivity activity = this.activity;
3853                        if (activity == null) {
3854                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3855                            return true;
3856                        }
3857                        switch (item.getItemId()) {
3858                            case R.id.action_show_qr_code:
3859                                activity.showQrCode(conversation.getAccount().getShareableUri());
3860                                break;
3861                            case R.id.action_account_details:
3862                                activity.switchToAccount(
3863                                        message.getConversation().getAccount(), fingerprint);
3864                                break;
3865                            case R.id.action_manage_accounts:
3866                                AccountUtils.launchManageAccounts(activity);
3867                                break;
3868                        }
3869                        return true;
3870                    });
3871        }
3872        popupMenu.show();
3873    }
3874
3875    @Override
3876    public void onContactPictureClicked(Message message) {
3877        setThread(message.getThread());
3878        conversation.setUserSelectedThread(true);
3879
3880        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3881        if (received) {
3882            if (message.getConversation() instanceof Conversation
3883                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3884                Jid tcp = message.getTrueCounterpart();
3885                Jid user = message.getCounterpart();
3886                if (user != null && !user.isBareJid()) {
3887                    final MucOptions mucOptions =
3888                            ((Conversation) message.getConversation()).getMucOptions();
3889                    if (mucOptions.participating()
3890                            || ((Conversation) message.getConversation()).getNextCounterpart()
3891                                    != null) {
3892                        if (!mucOptions.isUserInRoom(user)
3893                                && mucOptions.findUserByRealJid(
3894                                                tcp == null ? null : tcp.asBareJid())
3895                                        == null) {
3896                            Toast.makeText(
3897                                            getActivity(),
3898                                            activity.getString(
3899                                                    R.string.user_has_left_conference,
3900                                                    user.getResource()),
3901                                            Toast.LENGTH_SHORT)
3902                                    .show();
3903                        }
3904                        highlightInConference(user.getResource());
3905                    } else {
3906                        Toast.makeText(
3907                                        getActivity(),
3908                                        R.string.you_are_not_participating,
3909                                        Toast.LENGTH_SHORT)
3910                                .show();
3911                    }
3912                }
3913            }
3914        }
3915    }
3916
3917    private Activity requireActivity() {
3918        final Activity activity = getActivity();
3919        if (activity == null) {
3920            throw new IllegalStateException("Activity not attached");
3921        }
3922        return activity;
3923    }
3924}