ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.app.FragmentManager;
   7import android.content.SharedPreferences;
   8import android.content.pm.PackageManager;
   9import android.databinding.DataBindingUtil;
  10import android.net.Uri;
  11import android.os.Build;
  12import android.preference.PreferenceManager;
  13import android.provider.MediaStore;
  14import android.support.annotation.IdRes;
  15import android.support.annotation.NonNull;
  16import android.support.annotation.StringRes;
  17import android.support.v7.app.AlertDialog;
  18import android.app.Fragment;
  19import android.app.PendingIntent;
  20import android.content.Context;
  21import android.content.DialogInterface;
  22import android.content.Intent;
  23import android.content.IntentSender.SendIntentException;
  24import android.os.Bundle;
  25import android.os.Handler;
  26import android.os.SystemClock;
  27import android.support.v13.view.inputmethod.InputConnectionCompat;
  28import android.support.v13.view.inputmethod.InputContentInfoCompat;
  29import android.text.Editable;
  30import android.util.Log;
  31import android.view.ContextMenu;
  32import android.view.ContextMenu.ContextMenuInfo;
  33import android.view.Gravity;
  34import android.view.LayoutInflater;
  35import android.view.Menu;
  36import android.view.MenuInflater;
  37import android.view.MenuItem;
  38import android.view.MotionEvent;
  39import android.view.View;
  40import android.view.View.OnClickListener;
  41import android.view.ViewGroup;
  42import android.view.inputmethod.EditorInfo;
  43import android.view.inputmethod.InputMethodManager;
  44import android.widget.AbsListView;
  45import android.widget.AbsListView.OnScrollListener;
  46import android.widget.AdapterView;
  47import android.widget.AdapterView.AdapterContextMenuInfo;
  48import android.widget.CheckBox;
  49import android.widget.ListView;
  50import android.widget.PopupMenu;
  51import android.widget.TextView.OnEditorActionListener;
  52import android.widget.Toast;
  53
  54import java.util.ArrayList;
  55import java.util.Arrays;
  56import java.util.Collections;
  57import java.util.HashSet;
  58import java.util.Iterator;
  59import java.util.List;
  60import java.util.Set;
  61import java.util.UUID;
  62import java.util.concurrent.atomic.AtomicBoolean;
  63
  64import eu.siacs.conversations.Config;
  65import eu.siacs.conversations.R;
  66import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  67import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  68import eu.siacs.conversations.databinding.FragmentConversationBinding;
  69import eu.siacs.conversations.entities.Account;
  70import eu.siacs.conversations.entities.Blockable;
  71import eu.siacs.conversations.entities.Contact;
  72import eu.siacs.conversations.entities.Conversation;
  73import eu.siacs.conversations.entities.Conversational;
  74import eu.siacs.conversations.entities.DownloadableFile;
  75import eu.siacs.conversations.entities.Message;
  76import eu.siacs.conversations.entities.MucOptions;
  77import eu.siacs.conversations.entities.MucOptions.User;
  78import eu.siacs.conversations.entities.Presence;
  79import eu.siacs.conversations.entities.ReadByMarker;
  80import eu.siacs.conversations.entities.Transferable;
  81import eu.siacs.conversations.entities.TransferablePlaceholder;
  82import eu.siacs.conversations.http.HttpDownloadConnection;
  83import eu.siacs.conversations.persistance.FileBackend;
  84import eu.siacs.conversations.services.MessageArchiveService;
  85import eu.siacs.conversations.services.XmppConnectionService;
  86import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  87import eu.siacs.conversations.ui.adapter.MessageAdapter;
  88import eu.siacs.conversations.ui.util.ActivityResult;
  89import eu.siacs.conversations.ui.util.Attachment;
  90import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  91import eu.siacs.conversations.ui.util.DateSeparator;
  92import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
  93import eu.siacs.conversations.ui.util.ListViewUtils;
  94import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  95import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
  96import eu.siacs.conversations.ui.util.PendingItem;
  97import eu.siacs.conversations.ui.util.PresenceSelector;
  98import eu.siacs.conversations.ui.util.ScrollState;
  99import eu.siacs.conversations.ui.util.SendButtonAction;
 100import eu.siacs.conversations.ui.util.SendButtonTool;
 101import eu.siacs.conversations.ui.util.ShareUtil;
 102import eu.siacs.conversations.ui.widget.EditMessage;
 103import eu.siacs.conversations.utils.GeoHelper;
 104import eu.siacs.conversations.utils.MessageUtils;
 105import eu.siacs.conversations.utils.NickValidityChecker;
 106import eu.siacs.conversations.utils.Patterns;
 107import eu.siacs.conversations.utils.QuickLoader;
 108import eu.siacs.conversations.utils.StylingHelper;
 109import eu.siacs.conversations.utils.TimeframeUtils;
 110import eu.siacs.conversations.utils.UIHelper;
 111import eu.siacs.conversations.xmpp.XmppConnection;
 112import eu.siacs.conversations.xmpp.chatstate.ChatState;
 113import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 114import rocks.xmpp.addr.Jid;
 115
 116import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 117import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 118import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
 119
 120
 121public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 122
 123
 124    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 125    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 126    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 127    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 128    public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 129    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 130    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 131    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 132    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 133    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 134    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 135    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 136    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 137    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 138
 139    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 140    public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 141    public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 142    public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 143    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 144
 145    private final List<Message> messageList = new ArrayList<>();
 146    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 147    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 148    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 149    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 150    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 151    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 152    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 153    public Uri mPendingEditorContent = null;
 154    protected MessageAdapter messageListAdapter;
 155    private MediaPreviewAdapter mediaPreviewAdapter;
 156    private String lastMessageUuid = null;
 157    private Conversation conversation;
 158    private FragmentConversationBinding binding;
 159    private Toast messageLoaderToast;
 160    private ConversationsActivity activity;
 161    private boolean reInitRequiredOnStart = true;
 162    private OnClickListener clickToMuc = new OnClickListener() {
 163
 164        @Override
 165        public void onClick(View v) {
 166            Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 167            intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 168            intent.putExtra("uuid", conversation.getUuid());
 169            startActivity(intent);
 170        }
 171    };
 172    private OnClickListener leaveMuc = new OnClickListener() {
 173
 174        @Override
 175        public void onClick(View v) {
 176            activity.xmppConnectionService.archiveConversation(conversation);
 177        }
 178    };
 179    private OnClickListener joinMuc = new OnClickListener() {
 180
 181        @Override
 182        public void onClick(View v) {
 183            activity.xmppConnectionService.joinMuc(conversation);
 184        }
 185    };
 186    private OnClickListener enterPassword = new OnClickListener() {
 187
 188        @Override
 189        public void onClick(View v) {
 190            MucOptions muc = conversation.getMucOptions();
 191            String password = muc.getPassword();
 192            if (password == null) {
 193                password = "";
 194            }
 195            activity.quickPasswordEdit(password, value -> {
 196                activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 197                return null;
 198            });
 199        }
 200    };
 201    private OnScrollListener mOnScrollListener = new OnScrollListener() {
 202
 203        @Override
 204        public void onScrollStateChanged(AbsListView view, int scrollState) {
 205            if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 206                fireReadEvent();
 207            }
 208        }
 209
 210        @Override
 211        public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 212            toggleScrollDownButton(view);
 213            synchronized (ConversationFragment.this.messageList) {
 214                if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 215                    long timestamp;
 216                    if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 217                        timestamp = messageList.get(1).getTimeSent();
 218                    } else {
 219                        timestamp = messageList.get(0).getTimeSent();
 220                    }
 221                    activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 222                        @Override
 223                        public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 224                            if (ConversationFragment.this.conversation != conversation) {
 225                                conversation.messagesLoaded.set(true);
 226                                return;
 227                            }
 228                            runOnUiThread(() -> {
 229                                synchronized (messageList) {
 230                                    final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 231                                    Message message = null;
 232                                    int childPos;
 233                                    for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 234                                        message = messageList.get(oldPosition + childPos);
 235                                        if (message.getType() != Message.TYPE_STATUS) {
 236                                            break;
 237                                        }
 238                                    }
 239                                    final String uuid = message != null ? message.getUuid() : null;
 240                                    View v = binding.messagesView.getChildAt(childPos);
 241                                    final int pxOffset = (v == null) ? 0 : v.getTop();
 242                                    ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 243                                    try {
 244                                        updateStatusMessages();
 245                                    } catch (IllegalStateException e) {
 246                                        Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 247                                    }
 248                                    messageListAdapter.notifyDataSetChanged();
 249                                    int pos = Math.max(getIndexOf(uuid, messageList), 0);
 250                                    binding.messagesView.setSelectionFromTop(pos, pxOffset);
 251                                    if (messageLoaderToast != null) {
 252                                        messageLoaderToast.cancel();
 253                                    }
 254                                    conversation.messagesLoaded.set(true);
 255                                }
 256                            });
 257                        }
 258
 259                        @Override
 260                        public void informUser(final int resId) {
 261
 262                            runOnUiThread(() -> {
 263                                if (messageLoaderToast != null) {
 264                                    messageLoaderToast.cancel();
 265                                }
 266                                if (ConversationFragment.this.conversation != conversation) {
 267                                    return;
 268                                }
 269                                messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 270                                messageLoaderToast.show();
 271                            });
 272
 273                        }
 274                    });
 275
 276                }
 277            }
 278        }
 279    };
 280    private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 281        @Override
 282        public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 283            // try to get permission to read the image, if applicable
 284            if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 285                try {
 286                    inputContentInfo.requestPermission();
 287                } catch (Exception e) {
 288                    Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 289                    Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 290                    ).show();
 291                    return false;
 292                }
 293            }
 294            if (hasPermissions(REQUEST_ADD_EDITOR_CONTENT, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 295                attachEditorContentToConversation(inputContentInfo.getContentUri());
 296            } else {
 297                mPendingEditorContent = inputContentInfo.getContentUri();
 298            }
 299            return true;
 300        }
 301    };
 302    private Message selectedMessage;
 303    private OnClickListener mEnableAccountListener = new OnClickListener() {
 304        @Override
 305        public void onClick(View v) {
 306            final Account account = conversation == null ? null : conversation.getAccount();
 307            if (account != null) {
 308                account.setOption(Account.OPTION_DISABLED, false);
 309                activity.xmppConnectionService.updateAccount(account);
 310            }
 311        }
 312    };
 313    private OnClickListener mUnblockClickListener = new OnClickListener() {
 314        @Override
 315        public void onClick(final View v) {
 316            v.post(() -> v.setVisibility(View.INVISIBLE));
 317            if (conversation.isDomainBlocked()) {
 318                BlockContactDialog.show(activity, conversation);
 319            } else {
 320                unblockConversation(conversation);
 321            }
 322        }
 323    };
 324    private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 325    private OnClickListener mAddBackClickListener = new OnClickListener() {
 326
 327        @Override
 328        public void onClick(View v) {
 329            final Contact contact = conversation == null ? null : conversation.getContact();
 330            if (contact != null) {
 331                activity.xmppConnectionService.createContact(contact, true);
 332                activity.switchToContactDetails(contact);
 333            }
 334        }
 335    };
 336    private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 337    private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 338        @Override
 339        public void onClick(View v) {
 340            final Contact contact = conversation == null ? null : conversation.getContact();
 341            if (contact != null) {
 342                activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 343                        activity.xmppConnectionService.getPresenceGenerator()
 344                                .sendPresenceUpdatesTo(contact));
 345                hideSnackbar();
 346            }
 347        }
 348    };
 349    protected OnClickListener clickToDecryptListener = new OnClickListener() {
 350
 351        @Override
 352        public void onClick(View v) {
 353            PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 354            if (pendingIntent != null) {
 355                try {
 356                    getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 357                            REQUEST_DECRYPT_PGP,
 358                            null,
 359                            0,
 360                            0,
 361                            0);
 362                } catch (SendIntentException e) {
 363                    Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 364                    conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 365                }
 366            }
 367            updateSnackBar(conversation);
 368        }
 369    };
 370    private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 371    private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 372        if (actionId == EditorInfo.IME_ACTION_SEND) {
 373            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 374            if (imm != null && imm.isFullscreenMode()) {
 375                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 376            }
 377            sendMessage();
 378            return true;
 379        } else {
 380            return false;
 381        }
 382    };
 383    private OnClickListener mScrollButtonListener = new OnClickListener() {
 384
 385        @Override
 386        public void onClick(View v) {
 387            stopScrolling();
 388            setSelection(binding.messagesView.getCount() - 1, true);
 389        }
 390    };
 391    private OnClickListener mSendButtonListener = new OnClickListener() {
 392
 393        @Override
 394        public void onClick(View v) {
 395            Object tag = v.getTag();
 396            if (tag instanceof SendButtonAction) {
 397                SendButtonAction action = (SendButtonAction) tag;
 398                switch (action) {
 399                    case TAKE_PHOTO:
 400                    case RECORD_VIDEO:
 401                    case SEND_LOCATION:
 402                    case RECORD_VOICE:
 403                    case CHOOSE_PICTURE:
 404                        attachFile(action.toChoice());
 405                        break;
 406                    case CANCEL:
 407                        if (conversation != null) {
 408                            if (conversation.setCorrectingMessage(null)) {
 409                                binding.textinput.setText("");
 410                                binding.textinput.append(conversation.getDraftMessage());
 411                                conversation.setDraftMessage(null);
 412                            } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 413                                conversation.setNextCounterpart(null);
 414                            }
 415                            updateChatMsgHint();
 416                            updateSendButton();
 417                            updateEditablity();
 418                        }
 419                        break;
 420                    default:
 421                        sendMessage();
 422                }
 423            } else {
 424                sendMessage();
 425            }
 426        }
 427    };
 428    private int completionIndex = 0;
 429    private int lastCompletionLength = 0;
 430    private String incomplete;
 431    private int lastCompletionCursor;
 432    private boolean firstWord = false;
 433    private Message mPendingDownloadableMessage;
 434
 435    private static ConversationFragment findConversationFragment(Activity activity) {
 436        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 437        if (fragment != null && fragment instanceof ConversationFragment) {
 438            return (ConversationFragment) fragment;
 439        }
 440        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 441        if (fragment != null && fragment instanceof ConversationFragment) {
 442            return (ConversationFragment) fragment;
 443        }
 444        return null;
 445    }
 446
 447    public static void startStopPending(Activity activity) {
 448        ConversationFragment fragment = findConversationFragment(activity);
 449        if (fragment != null) {
 450            fragment.messageListAdapter.startStopPending();
 451        }
 452    }
 453
 454    public static void downloadFile(Activity activity, Message message) {
 455        ConversationFragment fragment = findConversationFragment(activity);
 456        if (fragment != null) {
 457            fragment.startDownloadable(message);
 458        }
 459    }
 460
 461    public static void registerPendingMessage(Activity activity, Message message) {
 462        ConversationFragment fragment = findConversationFragment(activity);
 463        if (fragment != null) {
 464            fragment.pendingMessage.push(message);
 465        }
 466    }
 467
 468    public static void openPendingMessage(Activity activity) {
 469        ConversationFragment fragment = findConversationFragment(activity);
 470        if (fragment != null) {
 471            Message message = fragment.pendingMessage.pop();
 472            if (message != null) {
 473                fragment.messageListAdapter.openDownloadable(message);
 474            }
 475        }
 476    }
 477
 478    public static Conversation getConversation(Activity activity) {
 479        return getConversation(activity, R.id.secondary_fragment);
 480    }
 481
 482    private static Conversation getConversation(Activity activity, @IdRes int res) {
 483        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 484        if (fragment != null && fragment instanceof ConversationFragment) {
 485            return ((ConversationFragment) fragment).getConversation();
 486        } else {
 487            return null;
 488        }
 489    }
 490
 491    public static ConversationFragment get(Activity activity) {
 492        FragmentManager fragmentManager = activity.getFragmentManager();
 493        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 494        if (fragment != null && fragment instanceof ConversationFragment) {
 495            return (ConversationFragment) fragment;
 496        } else {
 497            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 498            return fragment != null && fragment instanceof ConversationFragment ? (ConversationFragment) fragment : null;
 499        }
 500    }
 501
 502    public static Conversation getConversationReliable(Activity activity) {
 503        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 504        if (conversation != null) {
 505            return conversation;
 506        }
 507        return getConversation(activity, R.id.main_fragment);
 508    }
 509
 510    private static boolean allGranted(int[] grantResults) {
 511        for (int grantResult : grantResults) {
 512            if (grantResult != PackageManager.PERMISSION_GRANTED) {
 513                return false;
 514            }
 515        }
 516        return true;
 517    }
 518
 519    private static boolean writeGranted(int[] grantResults, String[] permission) {
 520        for (int i = 0; i < grantResults.length; ++i) {
 521            if (Manifest.permission.WRITE_EXTERNAL_STORAGE.equals(permission[i])) {
 522                return grantResults[i] == PackageManager.PERMISSION_GRANTED;
 523            }
 524        }
 525        return false;
 526    }
 527
 528    private static String getFirstDenied(int[] grantResults, String[] permissions) {
 529        for (int i = 0; i < grantResults.length; ++i) {
 530            if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 531                return permissions[i];
 532            }
 533        }
 534        return null;
 535    }
 536
 537    private static boolean scrolledToBottom(AbsListView listView) {
 538        final int count = listView.getCount();
 539        if (count == 0) {
 540            return true;
 541        } else if (listView.getLastVisiblePosition() == count - 1) {
 542            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 543            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 544        } else {
 545            return false;
 546        }
 547    }
 548
 549    private void toggleScrollDownButton() {
 550        toggleScrollDownButton(binding.messagesView);
 551    }
 552
 553    private void toggleScrollDownButton(AbsListView listView) {
 554        if (conversation == null) {
 555            return;
 556        }
 557        if (scrolledToBottom(listView)) {
 558            lastMessageUuid = null;
 559            hideUnreadMessagesCount();
 560        } else {
 561            binding.scrollToBottomButton.setEnabled(true);
 562            binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 563            if (lastMessageUuid == null) {
 564                lastMessageUuid = conversation.getLatestMessage().getUuid();
 565            }
 566            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 567                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 568            }
 569        }
 570    }
 571
 572    private int getIndexOf(String uuid, List<Message> messages) {
 573        if (uuid == null) {
 574            return messages.size() - 1;
 575        }
 576        for (int i = 0; i < messages.size(); ++i) {
 577            if (uuid.equals(messages.get(i).getUuid())) {
 578                return i;
 579            } else {
 580                Message next = messages.get(i);
 581                while (next != null && next.wasMergedIntoPrevious()) {
 582                    if (uuid.equals(next.getUuid())) {
 583                        return i;
 584                    }
 585                    next = next.next();
 586                }
 587
 588            }
 589        }
 590        return -1;
 591    }
 592
 593    private ScrollState getScrollPosition() {
 594        final ListView listView = this.binding.messagesView;
 595        if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 596            return null;
 597        } else {
 598            final int pos = listView.getFirstVisiblePosition();
 599            final View view = listView.getChildAt(0);
 600            if (view == null) {
 601                return null;
 602            } else {
 603                return new ScrollState(pos, view.getTop());
 604            }
 605        }
 606    }
 607
 608    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 609        if (scrollPosition != null) {
 610
 611            this.lastMessageUuid = lastMessageUuid;
 612            if (lastMessageUuid != null) {
 613                binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 614            }
 615            //TODO maybe this needs a 'post'
 616            this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 617            toggleScrollDownButton();
 618        }
 619    }
 620
 621    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 622        if (conversation == null) {
 623            return;
 624        }
 625        activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 626
 627            @Override
 628            public void success(Message message) {
 629
 630            }
 631
 632            @Override
 633            public void error(int errorCode, Message object) {
 634                //TODO show possible pgp error
 635            }
 636
 637            @Override
 638            public void userInputRequried(PendingIntent pi, Message object) {
 639
 640            }
 641        });
 642    }
 643
 644    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 645        if (conversation == null) {
 646            return;
 647        }
 648        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 649        prepareFileToast.show();
 650        activity.delegateUriPermissionsToService(uri);
 651        activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 652            @Override
 653            public void inform(final String text) {
 654                hidePrepareFileToast(prepareFileToast);
 655                runOnUiThread(() -> activity.replaceToast(text));
 656            }
 657
 658            @Override
 659            public void success(Message message) {
 660                runOnUiThread(() -> activity.hideToast());
 661                hidePrepareFileToast(prepareFileToast);
 662            }
 663
 664            @Override
 665            public void error(final int errorCode, Message message) {
 666                hidePrepareFileToast(prepareFileToast);
 667                runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 668
 669            }
 670
 671            @Override
 672            public void userInputRequried(PendingIntent pi, Message message) {
 673                hidePrepareFileToast(prepareFileToast);
 674            }
 675        });
 676    }
 677
 678    public void attachEditorContentToConversation(Uri uri) {
 679        mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 680        toggleInputMethod();
 681    }
 682
 683    private void attachImageToConversation(Conversation conversation, Uri uri) {
 684        if (conversation == null) {
 685            return;
 686        }
 687        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 688        prepareFileToast.show();
 689        activity.delegateUriPermissionsToService(uri);
 690        activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 691                new UiCallback<Message>() {
 692
 693                    @Override
 694                    public void userInputRequried(PendingIntent pi, Message object) {
 695                        hidePrepareFileToast(prepareFileToast);
 696                    }
 697
 698                    @Override
 699                    public void success(Message message) {
 700                        hidePrepareFileToast(prepareFileToast);
 701                    }
 702
 703                    @Override
 704                    public void error(final int error, Message message) {
 705                        hidePrepareFileToast(prepareFileToast);
 706                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 707                    }
 708                });
 709    }
 710
 711    private void hidePrepareFileToast(final Toast prepareFileToast) {
 712        if (prepareFileToast != null && activity != null) {
 713            activity.runOnUiThread(prepareFileToast::cancel);
 714        }
 715    }
 716
 717    private void sendMessage() {
 718        if (mediaPreviewAdapter.hasAttachments()) {
 719            commitAttachments();
 720            return;
 721        }
 722        final String body = this.binding.textinput.getText().toString();
 723        final Conversation conversation = this.conversation;
 724        if (body.length() == 0 || conversation == null) {
 725            return;
 726        }
 727        final Message message;
 728        if (conversation.getCorrectingMessage() == null) {
 729            message = new Message(conversation, body, conversation.getNextEncryption());
 730            if (conversation.getMode() == Conversation.MODE_MULTI) {
 731                final Jid nextCounterpart = conversation.getNextCounterpart();
 732                if (nextCounterpart != null) {
 733                    message.setCounterpart(nextCounterpart);
 734                    message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 735                    message.setType(Message.TYPE_PRIVATE);
 736                }
 737            }
 738        } else {
 739            message = conversation.getCorrectingMessage();
 740            message.setBody(body);
 741            message.setEdited(message.getUuid());
 742            message.setUuid(UUID.randomUUID().toString());
 743        }
 744        switch (conversation.getNextEncryption()) {
 745            case Message.ENCRYPTION_PGP:
 746                sendPgpMessage(message);
 747                break;
 748            case Message.ENCRYPTION_AXOLOTL:
 749                if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 750                    sendMessage(message);
 751                }
 752                break;
 753            default:
 754                sendMessage(message);
 755        }
 756    }
 757
 758    protected boolean trustKeysIfNeeded(int requestCode) {
 759        return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 760    }
 761
 762    protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 763        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 764        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 765        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 766        boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 767        boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 768        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 769        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 770        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 771        if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted || downloadInProgress) {
 772            axolotlService.createSessionsIfNeeded(conversation);
 773            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 774            String[] contacts = new String[targets.size()];
 775            for (int i = 0; i < contacts.length; ++i) {
 776                contacts[i] = targets.get(i).toString();
 777            }
 778            intent.putExtra("contacts", contacts);
 779            intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 780            intent.putExtra("choice", attachmentChoice);
 781            intent.putExtra("conversation", conversation.getUuid());
 782            startActivityForResult(intent, requestCode);
 783            return true;
 784        } else {
 785            return false;
 786        }
 787    }
 788
 789    public void updateChatMsgHint() {
 790        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 791        if (conversation.getCorrectingMessage() != null) {
 792            this.binding.textinput.setHint(R.string.send_corrected_message);
 793        } else if (multi && conversation.getNextCounterpart() != null) {
 794            this.binding.textinput.setHint(getString(
 795                    R.string.send_private_message_to,
 796                    conversation.getNextCounterpart().getResource()));
 797        } else if (multi && !conversation.getMucOptions().participating()) {
 798            this.binding.textinput.setHint(R.string.you_are_not_participating);
 799        } else {
 800            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 801            getActivity().invalidateOptionsMenu();
 802        }
 803    }
 804
 805    public void setupIme() {
 806        this.binding.textinput.refreshIme();
 807    }
 808
 809    private void handleActivityResult(ActivityResult activityResult) {
 810        if (activityResult.resultCode == Activity.RESULT_OK) {
 811            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 812        } else {
 813            handleNegativeActivityResult(activityResult.requestCode);
 814        }
 815    }
 816
 817    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 818        switch (requestCode) {
 819            case REQUEST_TRUST_KEYS_TEXT:
 820                final String body = this.binding.textinput.getText().toString();
 821                Message message = new Message(conversation, body, conversation.getNextEncryption());
 822                sendMessage(message);
 823                break;
 824            case REQUEST_TRUST_KEYS_MENU:
 825                int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 826                selectPresenceToAttachFile(choice);
 827                break;
 828            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 829                final List<Attachment> imageUris = Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 830                mediaPreviewAdapter.addMediaPreviews(imageUris);
 831                toggleInputMethod();
 832                break;
 833            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 834                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 835                if (takePhotoUri != null) {
 836                    mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 837                    toggleInputMethod();
 838                } else {
 839                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 840                }
 841                break;
 842            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 843            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 844            case ATTACHMENT_CHOICE_RECORD_VOICE:
 845                final List<Attachment> fileUris = Attachment.extractAttachments(getActivity(), data, Attachment.Type.FILE);
 846                mediaPreviewAdapter.addMediaPreviews(fileUris);
 847                toggleInputMethod();
 848                break;
 849            case ATTACHMENT_CHOICE_LOCATION:
 850                double latitude = data.getDoubleExtra("latitude", 0);
 851                double longitude = data.getDoubleExtra("longitude", 0);
 852                Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 853                attachLocationToConversation(conversation, geo);
 854                break;
 855            case REQUEST_INVITE_TO_CONVERSATION:
 856                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 857                if (invite != null) {
 858                    if (invite.execute(activity)) {
 859                        activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 860                        activity.mToast.show();
 861                    }
 862                }
 863                break;
 864        }
 865    }
 866
 867    private void commitAttachments() {
 868        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
 869        final PresenceSelector.OnPresenceSelected callback = () -> {
 870            for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
 871                final Attachment attachment = i.next();
 872                if (attachment.getType() == Attachment.Type.IMAGE) {
 873                   Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
 874					attachImageToConversation(conversation, attachment.getUri());
 875                } else {
 876                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 877                    attachFileToConversation(conversation, attachment.getUri(), attachment.getMime());
 878                }
 879            }
 880            mediaPreviewAdapter.notifyDataSetChanged();
 881            toggleInputMethod();
 882        };
 883        if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), attachments, getMaxHttpUploadSize(conversation))) {
 884            callback.onPresenceSelected();
 885        } else {
 886            activity.selectPresence(conversation, callback);
 887        }
 888    }
 889
 890    public void toggleInputMethod() {
 891        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
 892        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
 893        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
 894        updateSendButton();
 895    }
 896
 897    private void handleNegativeActivityResult(int requestCode) {
 898        switch (requestCode) {
 899            //nothing to do for now
 900        }
 901    }
 902
 903    @Override
 904    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 905        super.onActivityResult(requestCode, resultCode, data);
 906        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 907        if (activity != null && activity.xmppConnectionService != null) {
 908            handleActivityResult(activityResult);
 909        } else {
 910            this.postponedActivityResult.push(activityResult);
 911        }
 912    }
 913
 914    public void unblockConversation(final Blockable conversation) {
 915        activity.xmppConnectionService.sendUnblockRequest(conversation);
 916    }
 917
 918    @Override
 919    public void onAttach(Activity activity) {
 920        super.onAttach(activity);
 921        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 922        if (activity instanceof ConversationsActivity) {
 923            this.activity = (ConversationsActivity) activity;
 924        } else {
 925            throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 926        }
 927    }
 928
 929    @Override
 930    public void onDetach() {
 931        super.onDetach();
 932        this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 933    }
 934
 935    @Override
 936    public void onCreate(Bundle savedInstanceState) {
 937        super.onCreate(savedInstanceState);
 938        setHasOptionsMenu(true);
 939    }
 940
 941    @Override
 942    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 943        menuInflater.inflate(R.menu.fragment_conversation, menu);
 944        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 945        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 946        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 947        final MenuItem menuMute = menu.findItem(R.id.action_mute);
 948        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 949
 950
 951        if (conversation != null) {
 952            if (conversation.getMode() == Conversation.MODE_MULTI) {
 953                menuContactDetails.setVisible(false);
 954                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 955            } else {
 956                menuContactDetails.setVisible(!this.conversation.withSelf());
 957                menuMucDetails.setVisible(false);
 958                final XmppConnectionService service = activity.xmppConnectionService;
 959                menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 960            }
 961            if (conversation.isMuted()) {
 962                menuMute.setVisible(false);
 963            } else {
 964                menuUnmute.setVisible(false);
 965            }
 966            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 967            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 968        }
 969        super.onCreateOptionsMenu(menu, menuInflater);
 970    }
 971
 972    @Override
 973    public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 974        this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 975        binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 976
 977        binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 978
 979        binding.textinput.setOnEditorActionListener(mEditorActionListener);
 980        binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 981
 982        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 983
 984        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 985        binding.messagesView.setOnScrollListener(mOnScrollListener);
 986        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 987        mediaPreviewAdapter = new MediaPreviewAdapter(this);
 988        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
 989        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 990        messageListAdapter.setOnContactPictureClicked(message -> {
 991            String fingerprint;
 992            if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 993                fingerprint = "pgp";
 994            } else {
 995                fingerprint = message.getFingerprint();
 996            }
 997            final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 998            if (received) {
 999                if (message.getConversation() instanceof Conversation && message.getConversation().getMode() == Conversation.MODE_MULTI) {
1000                    Jid tcp = message.getTrueCounterpart();
1001                    Jid user = message.getCounterpart();
1002                    if (user != null && !user.isBareJid()) {
1003                        final MucOptions mucOptions = ((Conversation) message.getConversation()).getMucOptions();
1004                        if (mucOptions.participating() || ((Conversation) message.getConversation()).getNextCounterpart() != null) {
1005                            if (!mucOptions.isUserInRoom(user) && mucOptions.findUserByRealJid(tcp == null ? null : tcp.asBareJid()) == null) {
1006                                Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
1007                            }
1008                            highlightInConference(user.getResource());
1009                        } else {
1010                            Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
1011                        }
1012                    }
1013                    return;
1014                } else {
1015                    if (!message.getContact().isSelf()) {
1016                        activity.switchToContactDetails(message.getContact(), fingerprint);
1017                        return;
1018                    }
1019                }
1020            }
1021            activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
1022        });
1023        messageListAdapter.setOnContactPictureLongClicked((v, message) -> {
1024            if (message.getStatus() <= Message.STATUS_RECEIVED) {
1025                if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
1026                    Jid tcp = message.getTrueCounterpart();
1027                    Jid cp = message.getCounterpart();
1028                    if (cp != null && !cp.isBareJid()) {
1029                        User userByRealJid = tcp != null ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp) : null;
1030                        final User user = userByRealJid != null ? userByRealJid : conversation.getMucOptions().findUserByFullJid(cp);
1031                        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
1032                        popupMenu.inflate(R.menu.muc_details_context);
1033                        final Menu menu = popupMenu.getMenu();
1034                        MucDetailsContextMenuHelper.configureMucDetailsContextMenu(activity, menu, conversation, user);
1035                        popupMenu.setOnMenuItemClickListener(menuItem -> MucDetailsContextMenuHelper.onContextItemSelected(menuItem, user, conversation, activity));
1036                        popupMenu.show();
1037                    }
1038                }
1039            } else {
1040                activity.showQrCode(conversation.getAccount().getShareableUri());
1041            }
1042        });
1043        messageListAdapter.setOnQuoteListener(this::quoteText);
1044        binding.messagesView.setAdapter(messageListAdapter);
1045
1046        registerForContextMenu(binding.messagesView);
1047
1048        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1049            this.binding.textinput.setCustomInsertionActionModeCallback(new EditMessageActionModeCallback(this.binding.textinput));
1050        }
1051
1052        return binding.getRoot();
1053    }
1054
1055    private void quoteText(String text) {
1056        if (binding.textinput.isEnabled()) {
1057            binding.textinput.insertAsQuote(text);
1058            binding.textinput.requestFocus();
1059            InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1060            if (inputMethodManager != null) {
1061                inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1062            }
1063        }
1064    }
1065
1066    private void quoteMessage(Message message) {
1067        quoteText(MessageUtils.prepareQuote(message));
1068    }
1069
1070    @Override
1071    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1072        synchronized (this.messageList) {
1073            super.onCreateContextMenu(menu, v, menuInfo);
1074            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1075            this.selectedMessage = this.messageList.get(acmi.position);
1076            populateContextMenu(menu);
1077        }
1078    }
1079
1080    private void populateContextMenu(ContextMenu menu) {
1081        final Message m = this.selectedMessage;
1082        final Transferable t = m.getTransferable();
1083        Message relevantForCorrection = m;
1084        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1085            relevantForCorrection = relevantForCorrection.next();
1086        }
1087        if (m.getType() != Message.TYPE_STATUS) {
1088
1089            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1090                return;
1091            }
1092
1093            final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1094            final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1095                    || m.getEncryption() == Message.ENCRYPTION_PGP;
1096            final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1097            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1098            menu.setHeaderTitle(R.string.message_options);
1099            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1100            MenuItem copyLink = menu.findItem(R.id.copy_link);
1101            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1102            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1103            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1104            MenuItem shareWith = menu.findItem(R.id.share_with);
1105            MenuItem sendAgain = menu.findItem(R.id.send_again);
1106            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1107            MenuItem downloadFile = menu.findItem(R.id.download_file);
1108            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1109            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1110            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1111            if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1112                copyMessage.setVisible(true);
1113                quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
1114                String body = m.getMergedBody().toString();
1115                if (ShareUtil.containsXmppUri(body)) {
1116                    copyLink.setTitle(R.string.copy_jabber_id);
1117                    copyLink.setVisible(true);
1118                } else if (Patterns.AUTOLINK_WEB_URL.matcher(body).find()) {
1119                    copyLink.setVisible(true);
1120                }
1121            }
1122            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1123                retryDecryption.setVisible(true);
1124            }
1125            if (relevantForCorrection.getType() == Message.TYPE_TEXT
1126                    && relevantForCorrection.isLastCorrectableMessage()
1127                    && m.getConversation() instanceof Conversation
1128                    && (((Conversation) m.getConversation()).getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1129                correctMessage.setVisible(true);
1130            }
1131            if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1132                shareWith.setVisible(true);
1133            }
1134            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1135                sendAgain.setVisible(true);
1136            }
1137            if (m.hasFileOnRemoteHost()
1138                    || m.isGeoUri()
1139                    || m.treatAsDownloadable()
1140                    || (t != null && t instanceof HttpDownloadConnection)) {
1141                copyUrl.setVisible(true);
1142            }
1143            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1144                downloadFile.setVisible(true);
1145                downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1146            }
1147            boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1148                    || m.getStatus() == Message.STATUS_UNSEND
1149                    || m.getStatus() == Message.STATUS_OFFERED;
1150            if ((t != null && !deleted) || waitingOfferedSending && m.needsUploading()) {
1151                cancelTransmission.setVisible(true);
1152            }
1153            if (m.isFileOrImage() && !deleted) {
1154                String path = m.getRelativeFilePath();
1155                if (path == null || !path.startsWith("/") || FileBackend.isInDirectoryThatShouldNotBeScanned(getActivity(), path)) {
1156                    deleteFile.setVisible(true);
1157                    deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1158                }
1159            }
1160            if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1161                showErrorMessage.setVisible(true);
1162            }
1163        }
1164    }
1165
1166    @Override
1167    public boolean onContextItemSelected(MenuItem item) {
1168        switch (item.getItemId()) {
1169            case R.id.share_with:
1170                ShareUtil.share(activity, selectedMessage);
1171                return true;
1172            case R.id.correct_message:
1173                correctMessage(selectedMessage);
1174                return true;
1175            case R.id.copy_message:
1176                ShareUtil.copyToClipboard(activity, selectedMessage);
1177                return true;
1178            case R.id.copy_link:
1179                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1180                return true;
1181            case R.id.quote_message:
1182                quoteMessage(selectedMessage);
1183                return true;
1184            case R.id.send_again:
1185                resendMessage(selectedMessage);
1186                return true;
1187            case R.id.copy_url:
1188                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1189                return true;
1190            case R.id.download_file:
1191                startDownloadable(selectedMessage);
1192                return true;
1193            case R.id.cancel_transmission:
1194                cancelTransmission(selectedMessage);
1195                return true;
1196            case R.id.retry_decryption:
1197                retryDecryption(selectedMessage);
1198                return true;
1199            case R.id.delete_file:
1200                deleteFile(selectedMessage);
1201                return true;
1202            case R.id.show_error_message:
1203                showErrorMessage(selectedMessage);
1204                return true;
1205            default:
1206                return super.onContextItemSelected(item);
1207        }
1208    }
1209
1210    @Override
1211    public boolean onOptionsItemSelected(final MenuItem item) {
1212        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1213            return false;
1214        } else if (conversation == null) {
1215            return super.onOptionsItemSelected(item);
1216        }
1217        switch (item.getItemId()) {
1218            case R.id.encryption_choice_axolotl:
1219            case R.id.encryption_choice_pgp:
1220            case R.id.encryption_choice_none:
1221                handleEncryptionSelection(item);
1222                break;
1223            case R.id.attach_choose_picture:
1224            case R.id.attach_take_picture:
1225            case R.id.attach_record_video:
1226            case R.id.attach_choose_file:
1227            case R.id.attach_record_voice:
1228            case R.id.attach_location:
1229                handleAttachmentSelection(item);
1230                break;
1231            case R.id.action_archive:
1232                activity.xmppConnectionService.archiveConversation(conversation);
1233                break;
1234            case R.id.action_contact_details:
1235                activity.switchToContactDetails(conversation.getContact());
1236                break;
1237            case R.id.action_muc_details:
1238                Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1239                intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1240                intent.putExtra("uuid", conversation.getUuid());
1241                startActivity(intent);
1242                break;
1243            case R.id.action_invite:
1244                startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1245                break;
1246            case R.id.action_clear_history:
1247                clearHistoryDialog(conversation);
1248                break;
1249            case R.id.action_mute:
1250                muteConversationDialog(conversation);
1251                break;
1252            case R.id.action_unmute:
1253                unmuteConversation(conversation);
1254                break;
1255            case R.id.action_block:
1256            case R.id.action_unblock:
1257                final Activity activity = getActivity();
1258                if (activity instanceof XmppActivity) {
1259                    BlockContactDialog.show((XmppActivity) activity, conversation);
1260                }
1261                break;
1262            default:
1263                break;
1264        }
1265        return super.onOptionsItemSelected(item);
1266    }
1267
1268    private void handleAttachmentSelection(MenuItem item) {
1269        switch (item.getItemId()) {
1270            case R.id.attach_choose_picture:
1271                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1272                break;
1273            case R.id.attach_take_picture:
1274                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1275                break;
1276            case R.id.attach_record_video:
1277                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1278                break;
1279            case R.id.attach_choose_file:
1280                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1281                break;
1282            case R.id.attach_record_voice:
1283                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1284                break;
1285            case R.id.attach_location:
1286                attachFile(ATTACHMENT_CHOICE_LOCATION);
1287                break;
1288        }
1289    }
1290
1291    private void handleEncryptionSelection(MenuItem item) {
1292        if (conversation == null) {
1293            return;
1294        }
1295        switch (item.getItemId()) {
1296            case R.id.encryption_choice_none:
1297                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1298                item.setChecked(true);
1299                break;
1300            case R.id.encryption_choice_pgp:
1301                if (activity.hasPgp()) {
1302                    if (conversation.getAccount().getPgpSignature() != null) {
1303                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1304                        item.setChecked(true);
1305                    } else {
1306                        activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1307                    }
1308                } else {
1309                    activity.showInstallPgpDialog();
1310                }
1311                break;
1312            case R.id.encryption_choice_axolotl:
1313                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1314                        + "Enabled axolotl for Contact " + conversation.getContact().getJid());
1315                conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1316                item.setChecked(true);
1317                break;
1318            default:
1319                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1320                break;
1321        }
1322        activity.xmppConnectionService.updateConversation(conversation);
1323        updateChatMsgHint();
1324        getActivity().invalidateOptionsMenu();
1325        activity.refreshUi();
1326    }
1327
1328    public void attachFile(final int attachmentChoice) {
1329        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1330            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO)) {
1331                return;
1332            }
1333        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1334            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)) {
1335                return;
1336            }
1337        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1338            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1339                return;
1340            }
1341        }
1342        try {
1343            activity.getPreferences().edit()
1344                    .putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1345                    .apply();
1346        } catch (IllegalArgumentException e) {
1347            //just do not save
1348        }
1349        final int encryption = conversation.getNextEncryption();
1350        final int mode = conversation.getMode();
1351        if (encryption == Message.ENCRYPTION_PGP) {
1352            if (activity.hasPgp()) {
1353                if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1354                    activity.xmppConnectionService.getPgpEngine().hasKey(
1355                            conversation.getContact(),
1356                            new UiCallback<Contact>() {
1357
1358                                @Override
1359                                public void userInputRequried(PendingIntent pi, Contact contact) {
1360                                    startPendingIntent(pi, attachmentChoice);
1361                                }
1362
1363                                @Override
1364                                public void success(Contact contact) {
1365                                    selectPresenceToAttachFile(attachmentChoice);
1366                                }
1367
1368                                @Override
1369                                public void error(int error, Contact contact) {
1370                                    activity.replaceToast(getString(error));
1371                                }
1372                            });
1373                } else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1374                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1375                        Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1376                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1377                        warning.show();
1378                    }
1379                    selectPresenceToAttachFile(attachmentChoice);
1380                } else {
1381                    showNoPGPKeyDialog(false, (dialog, which) -> {
1382                        conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1383                        activity.xmppConnectionService.updateConversation(conversation);
1384                        selectPresenceToAttachFile(attachmentChoice);
1385                    });
1386                }
1387            } else {
1388                activity.showInstallPgpDialog();
1389            }
1390        } else {
1391            if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1392                selectPresenceToAttachFile(attachmentChoice);
1393            }
1394        }
1395    }
1396
1397    @Override
1398    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1399        if (grantResults.length > 0) {
1400            if (allGranted(grantResults)) {
1401                if (requestCode == REQUEST_START_DOWNLOAD) {
1402                    if (this.mPendingDownloadableMessage != null) {
1403                        startDownloadable(this.mPendingDownloadableMessage);
1404                    }
1405                } else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1406                    if (this.mPendingEditorContent != null) {
1407                        attachEditorContentToConversation(this.mPendingEditorContent);
1408                    }
1409                } else {
1410                    attachFile(requestCode);
1411                }
1412            } else {
1413                @StringRes int res;
1414                String firstDenied = getFirstDenied(grantResults, permissions);
1415                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1416                    res = R.string.no_microphone_permission;
1417                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1418                    res = R.string.no_camera_permission;
1419                } else {
1420                    res = R.string.no_storage_permission;
1421                }
1422                Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1423            }
1424        }
1425        if (writeGranted(grantResults, permissions)) {
1426            if (activity != null && activity.xmppConnectionService != null) {
1427                activity.xmppConnectionService.restartFileObserver();
1428            }
1429        }
1430    }
1431
1432    public void startDownloadable(Message message) {
1433        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1434            this.mPendingDownloadableMessage = message;
1435            return;
1436        }
1437        Transferable transferable = message.getTransferable();
1438        if (transferable != null) {
1439            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1440                createNewConnection(message);
1441                return;
1442            }
1443            if (!transferable.start()) {
1444                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1445                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1446            }
1447        } else if (message.treatAsDownloadable()) {
1448            createNewConnection(message);
1449        }
1450    }
1451
1452    private void createNewConnection(final Message message) {
1453        if (!activity.xmppConnectionService.getHttpConnectionManager().checkConnection(message)) {
1454            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1455            return;
1456        }
1457        activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1458    }
1459
1460    @SuppressLint("InflateParams")
1461    protected void clearHistoryDialog(final Conversation conversation) {
1462        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1463        builder.setTitle(getString(R.string.clear_conversation_history));
1464        final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1465        final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1466        builder.setView(dialogView);
1467        builder.setNegativeButton(getString(R.string.cancel), null);
1468        builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1469            this.activity.xmppConnectionService.clearConversationHistory(conversation);
1470            if (endConversationCheckBox.isChecked()) {
1471                this.activity.xmppConnectionService.archiveConversation(conversation);
1472                this.activity.onConversationArchived(conversation);
1473            } else {
1474                activity.onConversationsListItemUpdated();
1475                refresh();
1476            }
1477        });
1478        builder.create().show();
1479    }
1480
1481    protected void muteConversationDialog(final Conversation conversation) {
1482        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1483        builder.setTitle(R.string.disable_notifications);
1484        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1485        final CharSequence[] labels = new CharSequence[durations.length];
1486        for (int i = 0; i < durations.length; ++i) {
1487            if (durations[i] == -1) {
1488                labels[i] = getString(R.string.until_further_notice);
1489            } else {
1490                labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1491            }
1492        }
1493        builder.setItems(labels, (dialog, which) -> {
1494            final long till;
1495            if (durations[which] == -1) {
1496                till = Long.MAX_VALUE;
1497            } else {
1498                till = System.currentTimeMillis() + (durations[which] * 1000);
1499            }
1500            conversation.setMutedTill(till);
1501            activity.xmppConnectionService.updateConversation(conversation);
1502            activity.onConversationsListItemUpdated();
1503            refresh();
1504            getActivity().invalidateOptionsMenu();
1505        });
1506        builder.create().show();
1507    }
1508
1509    private boolean hasPermissions(int requestCode, String... permissions) {
1510        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1511            final List<String> missingPermissions = new ArrayList<>();
1512            for (String permission : permissions) {
1513                if (Config.ONLY_INTERNAL_STORAGE && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1514                    continue;
1515                }
1516                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1517                    missingPermissions.add(permission);
1518                }
1519            }
1520            if (missingPermissions.size() == 0) {
1521                return true;
1522            } else {
1523                requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1524                return false;
1525            }
1526        } else {
1527            return true;
1528        }
1529    }
1530
1531    public void unmuteConversation(final Conversation conversation) {
1532        conversation.setMutedTill(0);
1533        this.activity.xmppConnectionService.updateConversation(conversation);
1534        this.activity.onConversationsListItemUpdated();
1535        refresh();
1536        getActivity().invalidateOptionsMenu();
1537    }
1538
1539    protected void selectPresenceToAttachFile(final int attachmentChoice) {
1540        final Account account = conversation.getAccount();
1541        final PresenceSelector.OnPresenceSelected callback = () -> {
1542            Intent intent = new Intent();
1543            boolean chooser = false;
1544            switch (attachmentChoice) {
1545                case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1546                    intent.setAction(Intent.ACTION_GET_CONTENT);
1547                    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1548                    intent.setType("image/*");
1549                    chooser = true;
1550                    break;
1551                case ATTACHMENT_CHOICE_RECORD_VIDEO:
1552                    intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1553                    break;
1554                case ATTACHMENT_CHOICE_TAKE_PHOTO:
1555                    final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1556                    pendingTakePhotoUri.push(uri);
1557                    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1558                    intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1559                    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1560                    intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1561                    break;
1562                case ATTACHMENT_CHOICE_CHOOSE_FILE:
1563                    chooser = true;
1564                    intent.setType("*/*");
1565                    intent.addCategory(Intent.CATEGORY_OPENABLE);
1566                    intent.setAction(Intent.ACTION_GET_CONTENT);
1567                    break;
1568                case ATTACHMENT_CHOICE_RECORD_VOICE:
1569                    intent = new Intent(getActivity(), RecordingActivity.class);
1570                    break;
1571                case ATTACHMENT_CHOICE_LOCATION:
1572                    intent = GeoHelper.getFetchIntent(activity);
1573                    break;
1574            }
1575            if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1576                if (chooser) {
1577                    startActivityForResult(
1578                            Intent.createChooser(intent, getString(R.string.perform_action_with)),
1579                            attachmentChoice);
1580                } else {
1581                    startActivityForResult(intent, attachmentChoice);
1582                }
1583            }
1584        };
1585        if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1586            conversation.setNextCounterpart(null);
1587            callback.onPresenceSelected();
1588        } else {
1589            activity.selectPresence(conversation, callback);
1590        }
1591    }
1592
1593    @Override
1594    public void onResume() {
1595        super.onResume();
1596        binding.messagesView.post(this::fireReadEvent);
1597    }
1598
1599    private void fireReadEvent() {
1600        if (activity != null && this.conversation != null) {
1601            String uuid = getLastVisibleMessageUuid();
1602            if (uuid != null) {
1603                activity.onConversationRead(this.conversation, uuid);
1604            }
1605        }
1606    }
1607
1608    private String getLastVisibleMessageUuid() {
1609        if (binding == null) {
1610            return null;
1611        }
1612        synchronized (this.messageList) {
1613            int pos = binding.messagesView.getLastVisiblePosition();
1614            if (pos >= 0) {
1615                Message message = null;
1616                for (int i = pos; i >= 0; --i) {
1617                    try {
1618                        message = (Message) binding.messagesView.getItemAtPosition(i);
1619                    } catch (IndexOutOfBoundsException e) {
1620                        //should not happen if we synchronize properly. however if that fails we just gonna try item -1
1621                        continue;
1622                    }
1623                    if (message.getType() != Message.TYPE_STATUS) {
1624                        break;
1625                    }
1626                }
1627                if (message != null) {
1628                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1629                        message = message.next();
1630                    }
1631                    return message.getUuid();
1632                }
1633            }
1634        }
1635        return null;
1636    }
1637
1638    private void showErrorMessage(final Message message) {
1639        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1640        builder.setTitle(R.string.error_message);
1641        builder.setMessage(message.getErrorMessage());
1642        builder.setPositiveButton(R.string.confirm, null);
1643        builder.create().show();
1644    }
1645
1646
1647    private void deleteFile(Message message) {
1648        if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1649            message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1650            activity.onConversationsListItemUpdated();
1651            refresh();
1652        }
1653    }
1654
1655    private void resendMessage(final Message message) {
1656        if (message.isFileOrImage()) {
1657            if (!(message.getConversation() instanceof Conversation)) {
1658                return;
1659            }
1660            final Conversation conversation = (Conversation) message.getConversation();
1661            DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1662            if (file.exists()) {
1663                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1664                if (!message.hasFileOnRemoteHost()
1665                        && xmppConnection != null
1666                        && !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1667                    activity.selectPresence(conversation, () -> {
1668                        message.setCounterpart(conversation.getNextCounterpart());
1669                        activity.xmppConnectionService.resendFailedMessages(message);
1670                        new Handler().post(() -> {
1671                            int size = messageList.size();
1672                            this.binding.messagesView.setSelection(size - 1);
1673                        });
1674                    });
1675                    return;
1676                }
1677            } else {
1678                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1679                message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1680                activity.onConversationsListItemUpdated();
1681                refresh();
1682                return;
1683            }
1684        }
1685        activity.xmppConnectionService.resendFailedMessages(message);
1686        new Handler().post(() -> {
1687            int size = messageList.size();
1688            this.binding.messagesView.setSelection(size - 1);
1689        });
1690    }
1691
1692    private void cancelTransmission(Message message) {
1693        Transferable transferable = message.getTransferable();
1694        if (transferable != null) {
1695            transferable.cancel();
1696        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
1697            activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1698        }
1699    }
1700
1701    private void retryDecryption(Message message) {
1702        message.setEncryption(Message.ENCRYPTION_PGP);
1703        activity.onConversationsListItemUpdated();
1704        refresh();
1705        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1706    }
1707
1708    public void privateMessageWith(final Jid counterpart) {
1709        if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1710            activity.xmppConnectionService.sendChatState(conversation);
1711        }
1712        this.binding.textinput.setText("");
1713        this.conversation.setNextCounterpart(counterpart);
1714        updateChatMsgHint();
1715        updateSendButton();
1716        updateEditablity();
1717    }
1718
1719    private void correctMessage(Message message) {
1720        while (message.mergeable(message.next())) {
1721            message = message.next();
1722        }
1723        this.conversation.setCorrectingMessage(message);
1724        final Editable editable = binding.textinput.getText();
1725        this.conversation.setDraftMessage(editable.toString());
1726        this.binding.textinput.setText("");
1727        this.binding.textinput.append(message.getBody());
1728
1729    }
1730
1731    private void highlightInConference(String nick) {
1732        final Editable editable = this.binding.textinput.getText();
1733        String oldString = editable.toString().trim();
1734        final int pos = this.binding.textinput.getSelectionStart();
1735        if (oldString.isEmpty() || pos == 0) {
1736            editable.insert(0, nick + ": ");
1737        } else {
1738            final char before = editable.charAt(pos - 1);
1739            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1740            if (before == '\n') {
1741                editable.insert(pos, nick + ": ");
1742            } else {
1743                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1744                    if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1745                        editable.insert(pos - 2, ", " + nick);
1746                        return;
1747                    }
1748                }
1749                editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1750                if (Character.isWhitespace(after)) {
1751                    this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1752                }
1753            }
1754        }
1755    }
1756
1757    @Override
1758    public void onSaveInstanceState(Bundle outState) {
1759        super.onSaveInstanceState(outState);
1760        if (conversation != null) {
1761            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1762            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1763            final Uri uri = pendingTakePhotoUri.peek();
1764            if (uri != null) {
1765                outState.putString(STATE_PHOTO_URI, uri.toString());
1766            }
1767            final ScrollState scrollState = getScrollPosition();
1768            if (scrollState != null) {
1769                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1770            }
1771        }
1772    }
1773
1774    @Override
1775    public void onActivityCreated(Bundle savedInstanceState) {
1776        super.onActivityCreated(savedInstanceState);
1777        if (savedInstanceState == null) {
1778            return;
1779        }
1780        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1781        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1782        if (uuid != null) {
1783            QuickLoader.set(uuid);
1784            this.pendingConversationsUuid.push(uuid);
1785            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1786            if (takePhotoUri != null) {
1787                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1788            }
1789            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1790        }
1791    }
1792
1793    @Override
1794    public void onStart() {
1795        super.onStart();
1796        if (this.reInitRequiredOnStart && this.conversation != null) {
1797            final Bundle extras = pendingExtras.pop();
1798            reInit(this.conversation, extras != null);
1799            if (extras != null) {
1800                processExtras(extras);
1801            }
1802        } else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1803            final String uuid = pendingConversationsUuid.pop();
1804            Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1805            if (uuid != null) {
1806                findAndReInitByUuidOrArchive(uuid);
1807            }
1808        }
1809    }
1810
1811    @Override
1812    public void onStop() {
1813        super.onStop();
1814        final Activity activity = getActivity();
1815        messageListAdapter.unregisterListenerInAudioPlayer();
1816        if (activity == null || !activity.isChangingConfigurations()) {
1817            hideSoftKeyboard(activity);
1818            messageListAdapter.stopAudioPlayer();
1819        }
1820        if (this.conversation != null) {
1821            final String msg = this.binding.textinput.getText().toString();
1822            final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
1823            if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && participating && this.conversation.setNextMessage(msg)) {
1824                this.activity.xmppConnectionService.updateConversation(this.conversation);
1825            }
1826            updateChatState(this.conversation, msg);
1827            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1828        }
1829        this.reInitRequiredOnStart = true;
1830    }
1831
1832    private void updateChatState(final Conversation conversation, final String msg) {
1833        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1834        Account.State status = conversation.getAccount().getStatus();
1835        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1836            activity.xmppConnectionService.sendChatState(conversation);
1837        }
1838    }
1839
1840    private void saveMessageDraftStopAudioPlayer() {
1841        final Conversation previousConversation = this.conversation;
1842        if (this.activity == null || this.binding == null || previousConversation == null) {
1843            return;
1844        }
1845        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1846        final String msg = this.binding.textinput.getText().toString();
1847        final boolean participating = previousConversation.getMode() == Conversational.MODE_SINGLE || previousConversation.getMucOptions().participating();
1848        if (participating && previousConversation.setNextMessage(msg)) {
1849            activity.xmppConnectionService.updateConversation(previousConversation);
1850        }
1851        updateChatState(this.conversation, msg);
1852        messageListAdapter.stopAudioPlayer();
1853    }
1854
1855    public void reInit(Conversation conversation, Bundle extras) {
1856        QuickLoader.set(conversation.getUuid());
1857        this.saveMessageDraftStopAudioPlayer();
1858        if (this.reInit(conversation, extras != null)) {
1859            if (extras != null) {
1860                processExtras(extras);
1861            }
1862            this.reInitRequiredOnStart = false;
1863        } else {
1864            this.reInitRequiredOnStart = true;
1865            pendingExtras.push(extras);
1866        }
1867        resetUnreadMessagesCount();
1868    }
1869
1870    private void reInit(Conversation conversation) {
1871        reInit(conversation, false);
1872    }
1873
1874    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1875        if (conversation == null) {
1876            return false;
1877        }
1878        this.conversation = conversation;
1879        //once we set the conversation all is good and it will automatically do the right thing in onStart()
1880        if (this.activity == null || this.binding == null) {
1881            return false;
1882        }
1883
1884        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1885            activity.onConversationArchived(this.conversation);
1886            return false;
1887        }
1888
1889        stopScrolling();
1890        Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1891
1892        if (this.conversation.isRead() && hasExtras) {
1893            Log.d(Config.LOGTAG, "trimming conversation");
1894            this.conversation.trim();
1895        }
1896
1897        setupIme();
1898
1899        final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1900
1901        this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1902        this.binding.textinput.setKeyboardListener(null);
1903        this.binding.textinput.setText("");
1904        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
1905        if (participating) {
1906            this.binding.textinput.append(this.conversation.getNextMessage());
1907        }
1908        this.binding.textinput.setKeyboardListener(this);
1909        messageListAdapter.updatePreferences();
1910        refresh(false);
1911        this.conversation.messagesLoaded.set(true);
1912        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1913
1914        if (hasExtras || scrolledToBottomAndNoPending) {
1915            resetUnreadMessagesCount();
1916            synchronized (this.messageList) {
1917                Log.d(Config.LOGTAG, "jump to first unread message");
1918                final Message first = conversation.getFirstUnreadMessage();
1919                final int bottom = Math.max(0, this.messageList.size() - 1);
1920                final int pos;
1921                final boolean jumpToBottom;
1922                if (first == null) {
1923                    pos = bottom;
1924                    jumpToBottom = true;
1925                } else {
1926                    int i = getIndexOf(first.getUuid(), this.messageList);
1927                    pos = i < 0 ? bottom : i;
1928                    jumpToBottom = false;
1929                }
1930                setSelection(pos, jumpToBottom);
1931            }
1932        }
1933
1934
1935        this.binding.messagesView.post(this::fireReadEvent);
1936        //TODO if we only do this when this fragment is running on main it won't *bing* in tablet layout which might be unnecessary since we can *see* it
1937        activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1938        return true;
1939    }
1940
1941    private void resetUnreadMessagesCount() {
1942        lastMessageUuid = null;
1943        hideUnreadMessagesCount();
1944    }
1945
1946    private void hideUnreadMessagesCount() {
1947        if (this.binding == null) {
1948            return;
1949        }
1950        this.binding.scrollToBottomButton.setEnabled(false);
1951        this.binding.scrollToBottomButton.setVisibility(View.GONE);
1952        this.binding.unreadCountCustomView.setVisibility(View.GONE);
1953    }
1954
1955    private void setSelection(int pos, boolean jumpToBottom) {
1956        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
1957        this.binding.messagesView.post(() -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
1958        this.binding.messagesView.post(this::fireReadEvent);
1959    }
1960
1961
1962    private boolean scrolledToBottom() {
1963        return this.binding != null && scrolledToBottom(this.binding.messagesView);
1964    }
1965
1966    private void processExtras(Bundle extras) {
1967        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1968        final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1969        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1970        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
1971        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1972        if (nick != null) {
1973            if (pm) {
1974                Jid jid = conversation.getJid();
1975                try {
1976                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1977                    privateMessageWith(next);
1978                } catch (final IllegalArgumentException ignored) {
1979                    //do nothing
1980                }
1981            } else {
1982                final MucOptions mucOptions = conversation.getMucOptions();
1983                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
1984                    highlightInConference(nick);
1985                }
1986            }
1987        } else {
1988            if (text != null && asQuote) {
1989                quoteText(text);
1990            } else {
1991                appendText(text);
1992            }
1993        }
1994        final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1995        if (message != null) {
1996            startDownloadable(message);
1997        }
1998    }
1999
2000    private boolean showBlockSubmenu(View view) {
2001        final Jid jid = conversation.getJid();
2002        if (jid.getLocal() == null) {
2003            BlockContactDialog.show(activity, conversation);
2004        } else {
2005            PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2006            popupMenu.inflate(R.menu.block);
2007            popupMenu.setOnMenuItemClickListener(menuItem -> {
2008                Blockable blockable;
2009                switch (menuItem.getItemId()) {
2010                    case R.id.block_domain:
2011                        blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2012                        break;
2013                    default:
2014                        blockable = conversation;
2015                }
2016                BlockContactDialog.show(activity, blockable);
2017                return true;
2018            });
2019            popupMenu.show();
2020        }
2021        return true;
2022    }
2023
2024    private void updateSnackBar(final Conversation conversation) {
2025        final Account account = conversation.getAccount();
2026        final XmppConnection connection = account.getXmppConnection();
2027        final int mode = conversation.getMode();
2028        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2029        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2030            return;
2031        }
2032        if (account.getStatus() == Account.State.DISABLED) {
2033            showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2034        } else if (conversation.isBlocked()) {
2035            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2036        } else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2037            showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2038        } else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2039            showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2040        } else if (mode == Conversation.MODE_MULTI
2041                && !conversation.getMucOptions().online()
2042                && account.getStatus() == Account.State.ONLINE) {
2043            switch (conversation.getMucOptions().getError()) {
2044                case NICK_IN_USE:
2045                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2046                    break;
2047                case NO_RESPONSE:
2048                    showSnackbar(R.string.joining_conference, 0, null);
2049                    break;
2050                case SERVER_NOT_FOUND:
2051                    if (conversation.receivedMessagesCount() > 0) {
2052                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2053                    } else {
2054                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2055                    }
2056                    break;
2057                case PASSWORD_REQUIRED:
2058                    showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2059                    break;
2060                case BANNED:
2061                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2062                    break;
2063                case MEMBERS_ONLY:
2064                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2065                    break;
2066                case RESOURCE_CONSTRAINT:
2067                    showSnackbar(R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2068                    break;
2069                case KICKED:
2070                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2071                    break;
2072                case UNKNOWN:
2073                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2074                    break;
2075                case INVALID_NICK:
2076                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2077                case SHUTDOWN:
2078                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2079                    break;
2080                case DESTROYED:
2081                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2082                    break;
2083                default:
2084                    hideSnackbar();
2085                    break;
2086            }
2087        } else if (account.hasPendingPgpIntent(conversation)) {
2088            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2089        } else if (connection != null
2090                && connection.getFeatures().blocking()
2091                && conversation.countMessages() != 0
2092                && !conversation.isBlocked()
2093                && conversation.isWithStranger()) {
2094            showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2095        } else {
2096            hideSnackbar();
2097        }
2098    }
2099
2100    @Override
2101    public void refresh() {
2102        if (this.binding == null) {
2103            Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2104            return;
2105        }
2106        if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2107            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2108                activity.onConversationArchived(this.conversation);
2109                return;
2110            }
2111        }
2112        this.refresh(true);
2113    }
2114
2115    private void refresh(boolean notifyConversationRead) {
2116        synchronized (this.messageList) {
2117            if (this.conversation != null) {
2118                conversation.populateWithMessages(this.messageList);
2119                updateSnackBar(conversation);
2120                updateStatusMessages();
2121                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2122                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2123                    binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2124                }
2125                this.messageListAdapter.notifyDataSetChanged();
2126                updateChatMsgHint();
2127                if (notifyConversationRead && activity != null) {
2128                    binding.messagesView.post(this::fireReadEvent);
2129                }
2130                updateSendButton();
2131                updateEditablity();
2132                activity.invalidateOptionsMenu();
2133            }
2134        }
2135    }
2136
2137    protected void messageSent() {
2138        mSendingPgpMessage.set(false);
2139        this.binding.textinput.setText("");
2140        if (conversation.setCorrectingMessage(null)) {
2141            this.binding.textinput.append(conversation.getDraftMessage());
2142            conversation.setDraftMessage(null);
2143        }
2144        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
2145        if (participating && conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2146            activity.xmppConnectionService.databaseBackend.updateConversation(conversation);
2147        }
2148        updateChatMsgHint();
2149        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2150        final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2151        if (prefScrollToBottom || scrolledToBottom()) {
2152            new Handler().post(() -> {
2153                int size = messageList.size();
2154                this.binding.messagesView.setSelection(size - 1);
2155            });
2156        }
2157    }
2158
2159    public void doneSendingPgpMessage() {
2160        mSendingPgpMessage.set(false);
2161    }
2162
2163    public long getMaxHttpUploadSize(Conversation conversation) {
2164        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2165        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2166    }
2167
2168    private void updateEditablity() {
2169        boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2170        this.binding.textinput.setFocusable(canWrite);
2171        this.binding.textinput.setFocusableInTouchMode(canWrite);
2172        this.binding.textSendButton.setEnabled(canWrite);
2173        this.binding.textinput.setCursorVisible(canWrite);
2174        this.binding.textinput.setEnabled(canWrite);
2175    }
2176
2177    public void updateSendButton() {
2178        boolean hasAttachments = mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2179        boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2180        final Conversation c = this.conversation;
2181        final Presence.Status status;
2182        final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2183        final SendButtonAction action;
2184        if (hasAttachments) {
2185            action = SendButtonAction.TEXT;
2186        } else {
2187            action = SendButtonTool.getAction(getActivity(), c, text);
2188        }
2189        if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2190            if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2191                status = Presence.Status.OFFLINE;
2192            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2193                status = c.getContact().getShownStatus();
2194            } else {
2195                status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2196            }
2197        } else {
2198            status = Presence.Status.OFFLINE;
2199        }
2200        this.binding.textSendButton.setTag(action);
2201        this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2202    }
2203
2204    protected void updateDateSeparators() {
2205        synchronized (this.messageList) {
2206            DateSeparator.addAll(this.messageList);
2207        }
2208    }
2209
2210    protected void updateStatusMessages() {
2211        updateDateSeparators();
2212        synchronized (this.messageList) {
2213            if (showLoadMoreMessages(conversation)) {
2214                this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2215            }
2216            if (conversation.getMode() == Conversation.MODE_SINGLE) {
2217                ChatState state = conversation.getIncomingChatState();
2218                if (state == ChatState.COMPOSING) {
2219                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2220                } else if (state == ChatState.PAUSED) {
2221                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2222                } else {
2223                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2224                        if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2225                            return;
2226                        } else {
2227                            if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2228                                this.messageList.add(i + 1,
2229                                        Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2230                                return;
2231                            }
2232                        }
2233                    }
2234                }
2235            } else {
2236                final MucOptions mucOptions = conversation.getMucOptions();
2237                final List<MucOptions.User> allUsers = mucOptions.getUsers();
2238                final Set<ReadByMarker> addedMarkers = new HashSet<>();
2239                ChatState state = ChatState.COMPOSING;
2240                List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2241                if (users.size() == 0) {
2242                    state = ChatState.PAUSED;
2243                    users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2244                }
2245                if (mucOptions.isPrivateAndNonAnonymous()) {
2246                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2247                        final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2248                        final List<MucOptions.User> shownMarkers = new ArrayList<>();
2249                        for (ReadByMarker marker : markersForMessage) {
2250                            if (!ReadByMarker.contains(marker, addedMarkers)) {
2251                                addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2252                                MucOptions.User user = mucOptions.findUser(marker);
2253                                if (user != null && !users.contains(user)) {
2254                                    shownMarkers.add(user);
2255                                }
2256                            }
2257                        }
2258                        final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2259                        final Message statusMessage;
2260                        final int size = shownMarkers.size();
2261                        if (size > 1) {
2262                            final String body;
2263                            if (size <= 4) {
2264                                body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2265                            } else if (ReadByMarker.allUsersRepresented(allUsers, markersForMessage, markerForSender)) {
2266                                body = getString(R.string.everyone_has_read_up_to_this_point);
2267                            } else {
2268                                body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2269                            }
2270                            statusMessage = Message.createStatusMessage(conversation, body);
2271                            statusMessage.setCounterparts(shownMarkers);
2272                        } else if (size == 1) {
2273                            statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2274                            statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2275                            statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2276                        } else {
2277                            statusMessage = null;
2278                        }
2279                        if (statusMessage != null) {
2280                            this.messageList.add(i + 1, statusMessage);
2281                        }
2282                        addedMarkers.add(markerForSender);
2283                        if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2284                            break;
2285                        }
2286                    }
2287                }
2288                if (users.size() > 0) {
2289                    Message statusMessage;
2290                    if (users.size() == 1) {
2291                        MucOptions.User user = users.get(0);
2292                        int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2293                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2294                        statusMessage.setTrueCounterpart(user.getRealJid());
2295                        statusMessage.setCounterpart(user.getFullJid());
2296                    } else {
2297                        int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2298                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2299                        statusMessage.setCounterparts(users);
2300                    }
2301                    this.messageList.add(statusMessage);
2302                }
2303
2304            }
2305        }
2306    }
2307
2308    private void stopScrolling() {
2309        long now = SystemClock.uptimeMillis();
2310        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2311        binding.messagesView.dispatchTouchEvent(cancel);
2312    }
2313
2314    private boolean showLoadMoreMessages(final Conversation c) {
2315        if (activity == null || activity.xmppConnectionService == null) {
2316            return false;
2317        }
2318        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2319        final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2320        return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2321    }
2322
2323    private boolean hasMamSupport(final Conversation c) {
2324        if (c.getMode() == Conversation.MODE_SINGLE) {
2325            final XmppConnection connection = c.getAccount().getXmppConnection();
2326            return connection != null && connection.getFeatures().mam();
2327        } else {
2328            return c.getMucOptions().mamSupport();
2329        }
2330    }
2331
2332    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2333        showSnackbar(message, action, clickListener, null);
2334    }
2335
2336    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2337        this.binding.snackbar.setVisibility(View.VISIBLE);
2338        this.binding.snackbar.setOnClickListener(null);
2339        this.binding.snackbarMessage.setText(message);
2340        this.binding.snackbarMessage.setOnClickListener(null);
2341        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2342        if (action != 0) {
2343            this.binding.snackbarAction.setText(action);
2344        }
2345        this.binding.snackbarAction.setOnClickListener(clickListener);
2346        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2347    }
2348
2349    protected void hideSnackbar() {
2350        this.binding.snackbar.setVisibility(View.GONE);
2351    }
2352
2353    protected void sendMessage(Message message) {
2354        activity.xmppConnectionService.sendMessage(message);
2355        messageSent();
2356    }
2357
2358    protected void sendPgpMessage(final Message message) {
2359        final XmppConnectionService xmppService = activity.xmppConnectionService;
2360        final Contact contact = message.getConversation().getContact();
2361        if (!activity.hasPgp()) {
2362            activity.showInstallPgpDialog();
2363            return;
2364        }
2365        if (conversation.getAccount().getPgpSignature() == null) {
2366            activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2367            return;
2368        }
2369        if (!mSendingPgpMessage.compareAndSet(false, true)) {
2370            Log.d(Config.LOGTAG, "sending pgp message already in progress");
2371        }
2372        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2373            if (contact.getPgpKeyId() != 0) {
2374                xmppService.getPgpEngine().hasKey(contact,
2375                        new UiCallback<Contact>() {
2376
2377                            @Override
2378                            public void userInputRequried(PendingIntent pi, Contact contact) {
2379                                startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2380                            }
2381
2382                            @Override
2383                            public void success(Contact contact) {
2384                                encryptTextMessage(message);
2385                            }
2386
2387                            @Override
2388                            public void error(int error, Contact contact) {
2389                                activity.runOnUiThread(() -> Toast.makeText(activity,
2390                                        R.string.unable_to_connect_to_keychain,
2391                                        Toast.LENGTH_SHORT
2392                                ).show());
2393                                mSendingPgpMessage.set(false);
2394                            }
2395                        });
2396
2397            } else {
2398                showNoPGPKeyDialog(false, (dialog, which) -> {
2399                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2400                    xmppService.updateConversation(conversation);
2401                    message.setEncryption(Message.ENCRYPTION_NONE);
2402                    xmppService.sendMessage(message);
2403                    messageSent();
2404                });
2405            }
2406        } else {
2407            if (conversation.getMucOptions().pgpKeysInUse()) {
2408                if (!conversation.getMucOptions().everybodyHasKeys()) {
2409                    Toast warning = Toast
2410                            .makeText(getActivity(),
2411                                    R.string.missing_public_keys,
2412                                    Toast.LENGTH_LONG);
2413                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2414                    warning.show();
2415                }
2416                encryptTextMessage(message);
2417            } else {
2418                showNoPGPKeyDialog(true, (dialog, which) -> {
2419                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2420                    message.setEncryption(Message.ENCRYPTION_NONE);
2421                    xmppService.updateConversation(conversation);
2422                    xmppService.sendMessage(message);
2423                    messageSent();
2424                });
2425            }
2426        }
2427    }
2428
2429    public void encryptTextMessage(Message message) {
2430        activity.xmppConnectionService.getPgpEngine().encrypt(message,
2431                new UiCallback<Message>() {
2432
2433                    @Override
2434                    public void userInputRequried(PendingIntent pi, Message message) {
2435                        startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2436                    }
2437
2438                    @Override
2439                    public void success(Message message) {
2440                        //TODO the following two call can be made before the callback
2441                        getActivity().runOnUiThread(() -> messageSent());
2442                    }
2443
2444                    @Override
2445                    public void error(final int error, Message message) {
2446                        getActivity().runOnUiThread(() -> {
2447                            doneSendingPgpMessage();
2448                            Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2449                        });
2450
2451                    }
2452                });
2453    }
2454
2455    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2456        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2457        builder.setIconAttribute(android.R.attr.alertDialogIcon);
2458        if (plural) {
2459            builder.setTitle(getString(R.string.no_pgp_keys));
2460            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2461        } else {
2462            builder.setTitle(getString(R.string.no_pgp_key));
2463            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2464        }
2465        builder.setNegativeButton(getString(R.string.cancel), null);
2466        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2467        builder.create().show();
2468    }
2469
2470    public void appendText(String text) {
2471        if (text == null) {
2472            return;
2473        }
2474        String previous = this.binding.textinput.getText().toString();
2475        if (UIHelper.isLastLineQuote(previous)) {
2476            text = '\n' + text;
2477        } else if (previous.length() != 0 && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
2478            text = " " + text;
2479        }
2480        this.binding.textinput.append(text);
2481    }
2482
2483    @Override
2484    public boolean onEnterPressed() {
2485        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2486        final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2487        if (enterIsSend) {
2488            sendMessage();
2489            return true;
2490        } else {
2491            return false;
2492        }
2493    }
2494
2495    @Override
2496    public void onTypingStarted() {
2497        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2498        if (service == null) {
2499            return;
2500        }
2501        Account.State status = conversation.getAccount().getStatus();
2502        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2503            service.sendChatState(conversation);
2504        }
2505        updateSendButton();
2506    }
2507
2508    @Override
2509    public void onTypingStopped() {
2510        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2511        if (service == null) {
2512            return;
2513        }
2514        Account.State status = conversation.getAccount().getStatus();
2515        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2516            service.sendChatState(conversation);
2517        }
2518    }
2519
2520    @Override
2521    public void onTextDeleted() {
2522        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2523        if (service == null) {
2524            return;
2525        }
2526        Account.State status = conversation.getAccount().getStatus();
2527        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2528            service.sendChatState(conversation);
2529        }
2530        updateSendButton();
2531    }
2532
2533    @Override
2534    public void onTextChanged() {
2535        if (conversation != null && conversation.getCorrectingMessage() != null) {
2536            updateSendButton();
2537        }
2538    }
2539
2540    @Override
2541    public boolean onTabPressed(boolean repeated) {
2542        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2543            return false;
2544        }
2545        if (repeated) {
2546            completionIndex++;
2547        } else {
2548            lastCompletionLength = 0;
2549            completionIndex = 0;
2550            final String content = this.binding.textinput.getText().toString();
2551            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2552            int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2553            firstWord = start == 0;
2554            incomplete = content.substring(start, lastCompletionCursor);
2555        }
2556        List<String> completions = new ArrayList<>();
2557        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2558            String name = user.getName();
2559            if (name != null && name.startsWith(incomplete)) {
2560                completions.add(name + (firstWord ? ": " : " "));
2561            }
2562        }
2563        Collections.sort(completions);
2564        if (completions.size() > completionIndex) {
2565            String completion = completions.get(completionIndex).substring(incomplete.length());
2566            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2567            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2568            lastCompletionLength = completion.length();
2569        } else {
2570            completionIndex = -1;
2571            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2572            lastCompletionLength = 0;
2573        }
2574        return true;
2575    }
2576
2577    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2578        try {
2579            getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2580        } catch (final SendIntentException ignored) {
2581        }
2582    }
2583
2584    @Override
2585    public void onBackendConnected() {
2586        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2587        String uuid = pendingConversationsUuid.pop();
2588        if (uuid != null) {
2589            if (!findAndReInitByUuidOrArchive(uuid)) {
2590                return;
2591            }
2592        } else {
2593            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2594                clearPending();
2595                activity.onConversationArchived(conversation);
2596                return;
2597            }
2598        }
2599        ActivityResult activityResult = postponedActivityResult.pop();
2600        if (activityResult != null) {
2601            handleActivityResult(activityResult);
2602        }
2603        clearPending();
2604    }
2605
2606    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2607        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2608        if (conversation == null) {
2609            clearPending();
2610            activity.onConversationArchived(null);
2611            return false;
2612        }
2613        reInit(conversation);
2614        ScrollState scrollState = pendingScrollState.pop();
2615        String lastMessageUuid = pendingLastMessageUuid.pop();
2616        if (scrollState != null) {
2617            setScrollPosition(scrollState, lastMessageUuid);
2618        }
2619        return true;
2620    }
2621
2622    private void clearPending() {
2623        if (postponedActivityResult.pop() != null) {
2624            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2625        }
2626        pendingScrollState.pop();
2627        if (pendingTakePhotoUri.pop() != null) {
2628            Log.e(Config.LOGTAG, "cleared pending photo uri");
2629        }
2630    }
2631
2632    public Conversation getConversation() {
2633        return conversation;
2634    }
2635}