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.text.TextUtils;
  31import android.util.Log;
  32import android.view.ContextMenu;
  33import android.view.ContextMenu.ContextMenuInfo;
  34import android.view.Gravity;
  35import android.view.LayoutInflater;
  36import android.view.Menu;
  37import android.view.MenuInflater;
  38import android.view.MenuItem;
  39import android.view.MotionEvent;
  40import android.view.View;
  41import android.view.View.OnClickListener;
  42import android.view.ViewGroup;
  43import android.view.inputmethod.EditorInfo;
  44import android.view.inputmethod.InputMethodManager;
  45import android.widget.AbsListView;
  46import android.widget.AbsListView.OnScrollListener;
  47import android.widget.AdapterView;
  48import android.widget.AdapterView.AdapterContextMenuInfo;
  49import android.widget.CheckBox;
  50import android.widget.ListView;
  51import android.widget.PopupMenu;
  52import android.widget.TextView.OnEditorActionListener;
  53import android.widget.Toast;
  54
  55import java.util.ArrayList;
  56import java.util.Arrays;
  57import java.util.Collections;
  58import java.util.HashSet;
  59import java.util.Iterator;
  60import java.util.List;
  61import java.util.Set;
  62import java.util.UUID;
  63import java.util.concurrent.atomic.AtomicBoolean;
  64
  65import eu.siacs.conversations.Config;
  66import eu.siacs.conversations.R;
  67import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  68import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  69import eu.siacs.conversations.databinding.FragmentConversationBinding;
  70import eu.siacs.conversations.entities.Account;
  71import eu.siacs.conversations.entities.Blockable;
  72import eu.siacs.conversations.entities.Contact;
  73import eu.siacs.conversations.entities.Conversation;
  74import eu.siacs.conversations.entities.Conversational;
  75import eu.siacs.conversations.entities.DownloadableFile;
  76import eu.siacs.conversations.entities.Message;
  77import eu.siacs.conversations.entities.MucOptions;
  78import eu.siacs.conversations.entities.MucOptions.User;
  79import eu.siacs.conversations.entities.Presence;
  80import eu.siacs.conversations.entities.ReadByMarker;
  81import eu.siacs.conversations.entities.Transferable;
  82import eu.siacs.conversations.entities.TransferablePlaceholder;
  83import eu.siacs.conversations.http.HttpDownloadConnection;
  84import eu.siacs.conversations.persistance.FileBackend;
  85import eu.siacs.conversations.services.MessageArchiveService;
  86import eu.siacs.conversations.services.XmppConnectionService;
  87import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  88import eu.siacs.conversations.ui.adapter.MessageAdapter;
  89import eu.siacs.conversations.ui.util.ActivityResult;
  90import eu.siacs.conversations.ui.util.Attachment;
  91import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  92import eu.siacs.conversations.ui.util.DateSeparator;
  93import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
  94import eu.siacs.conversations.ui.util.ListViewUtils;
  95import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  96import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
  97import eu.siacs.conversations.ui.util.PendingItem;
  98import eu.siacs.conversations.ui.util.PresenceSelector;
  99import eu.siacs.conversations.ui.util.ScrollState;
 100import eu.siacs.conversations.ui.util.SendButtonAction;
 101import eu.siacs.conversations.ui.util.SendButtonTool;
 102import eu.siacs.conversations.ui.util.ShareUtil;
 103import eu.siacs.conversations.ui.widget.EditMessage;
 104import eu.siacs.conversations.utils.GeoHelper;
 105import eu.siacs.conversations.utils.MessageUtils;
 106import eu.siacs.conversations.utils.NickValidityChecker;
 107import eu.siacs.conversations.utils.Patterns;
 108import eu.siacs.conversations.utils.QuickLoader;
 109import eu.siacs.conversations.utils.StylingHelper;
 110import eu.siacs.conversations.utils.TimeframeUtils;
 111import eu.siacs.conversations.utils.UIHelper;
 112import eu.siacs.conversations.xmpp.XmppConnection;
 113import eu.siacs.conversations.xmpp.chatstate.ChatState;
 114import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 115import rocks.xmpp.addr.Jid;
 116
 117import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 118import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 119import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
 120
 121
 122public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 123
 124
 125    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 126    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 127    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 128    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 129    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 130    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 131    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 132    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 133    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 134    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 135    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 136    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 137    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 138    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 139    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 140
 141    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 142    public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 143    public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 144    public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".media_previews";
 145    public static final String STATE_MEDIA_PREVIEWS = ConversationFragment.class.getName() + ".take_photo_uri";
 146    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 147
 148    private final List<Message> messageList = new ArrayList<>();
 149    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 150    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 151    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 152    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 153    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 154    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 155    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 156    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 157    public Uri mPendingEditorContent = null;
 158    protected MessageAdapter messageListAdapter;
 159    private MediaPreviewAdapter mediaPreviewAdapter;
 160    private String lastMessageUuid = null;
 161    private Conversation conversation;
 162    private FragmentConversationBinding binding;
 163    private Toast messageLoaderToast;
 164    private ConversationsActivity activity;
 165    private boolean reInitRequiredOnStart = true;
 166    private OnClickListener clickToMuc = new OnClickListener() {
 167
 168        @Override
 169        public void onClick(View v) {
 170            Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 171            intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 172            intent.putExtra("uuid", conversation.getUuid());
 173            startActivity(intent);
 174        }
 175    };
 176    private OnClickListener leaveMuc = new OnClickListener() {
 177
 178        @Override
 179        public void onClick(View v) {
 180            activity.xmppConnectionService.archiveConversation(conversation);
 181        }
 182    };
 183    private OnClickListener joinMuc = new OnClickListener() {
 184
 185        @Override
 186        public void onClick(View v) {
 187            activity.xmppConnectionService.joinMuc(conversation);
 188        }
 189    };
 190    private OnClickListener enterPassword = new OnClickListener() {
 191
 192        @Override
 193        public void onClick(View v) {
 194            MucOptions muc = conversation.getMucOptions();
 195            String password = muc.getPassword();
 196            if (password == null) {
 197                password = "";
 198            }
 199            activity.quickPasswordEdit(password, value -> {
 200                activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 201                return null;
 202            });
 203        }
 204    };
 205    private OnScrollListener mOnScrollListener = new OnScrollListener() {
 206
 207        @Override
 208        public void onScrollStateChanged(AbsListView view, int scrollState) {
 209            if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 210                fireReadEvent();
 211            }
 212        }
 213
 214        @Override
 215        public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 216            toggleScrollDownButton(view);
 217            synchronized (ConversationFragment.this.messageList) {
 218                if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 219                    long timestamp;
 220                    if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 221                        timestamp = messageList.get(1).getTimeSent();
 222                    } else {
 223                        timestamp = messageList.get(0).getTimeSent();
 224                    }
 225                    activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 226                        @Override
 227                        public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 228                            if (ConversationFragment.this.conversation != conversation) {
 229                                conversation.messagesLoaded.set(true);
 230                                return;
 231                            }
 232                            runOnUiThread(() -> {
 233                                synchronized (messageList) {
 234                                    final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 235                                    Message message = null;
 236                                    int childPos;
 237                                    for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 238                                        message = messageList.get(oldPosition + childPos);
 239                                        if (message.getType() != Message.TYPE_STATUS) {
 240                                            break;
 241                                        }
 242                                    }
 243                                    final String uuid = message != null ? message.getUuid() : null;
 244                                    View v = binding.messagesView.getChildAt(childPos);
 245                                    final int pxOffset = (v == null) ? 0 : v.getTop();
 246                                    ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 247                                    try {
 248                                        updateStatusMessages();
 249                                    } catch (IllegalStateException e) {
 250                                        Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 251                                    }
 252                                    messageListAdapter.notifyDataSetChanged();
 253                                    int pos = Math.max(getIndexOf(uuid, messageList), 0);
 254                                    binding.messagesView.setSelectionFromTop(pos, pxOffset);
 255                                    if (messageLoaderToast != null) {
 256                                        messageLoaderToast.cancel();
 257                                    }
 258                                    conversation.messagesLoaded.set(true);
 259                                }
 260                            });
 261                        }
 262
 263                        @Override
 264                        public void informUser(final int resId) {
 265
 266                            runOnUiThread(() -> {
 267                                if (messageLoaderToast != null) {
 268                                    messageLoaderToast.cancel();
 269                                }
 270                                if (ConversationFragment.this.conversation != conversation) {
 271                                    return;
 272                                }
 273                                messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 274                                messageLoaderToast.show();
 275                            });
 276
 277                        }
 278                    });
 279
 280                }
 281            }
 282        }
 283    };
 284    private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 285        @Override
 286        public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 287            // try to get permission to read the image, if applicable
 288            if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 289                try {
 290                    inputContentInfo.requestPermission();
 291                } catch (Exception e) {
 292                    Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 293                    Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 294                    ).show();
 295                    return false;
 296                }
 297            }
 298            if (hasPermissions(REQUEST_ADD_EDITOR_CONTENT, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 299                attachEditorContentToConversation(inputContentInfo.getContentUri());
 300            } else {
 301                mPendingEditorContent = inputContentInfo.getContentUri();
 302            }
 303            return true;
 304        }
 305    };
 306    private Message selectedMessage;
 307    private OnClickListener mEnableAccountListener = new OnClickListener() {
 308        @Override
 309        public void onClick(View v) {
 310            final Account account = conversation == null ? null : conversation.getAccount();
 311            if (account != null) {
 312                account.setOption(Account.OPTION_DISABLED, false);
 313                activity.xmppConnectionService.updateAccount(account);
 314            }
 315        }
 316    };
 317    private OnClickListener mUnblockClickListener = new OnClickListener() {
 318        @Override
 319        public void onClick(final View v) {
 320            v.post(() -> v.setVisibility(View.INVISIBLE));
 321            if (conversation.isDomainBlocked()) {
 322                BlockContactDialog.show(activity, conversation);
 323            } else {
 324                unblockConversation(conversation);
 325            }
 326        }
 327    };
 328    private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 329    private OnClickListener mAddBackClickListener = new OnClickListener() {
 330
 331        @Override
 332        public void onClick(View v) {
 333            final Contact contact = conversation == null ? null : conversation.getContact();
 334            if (contact != null) {
 335                activity.xmppConnectionService.createContact(contact, true);
 336                activity.switchToContactDetails(contact);
 337            }
 338        }
 339    };
 340    private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 341    private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 342        @Override
 343        public void onClick(View v) {
 344            final Contact contact = conversation == null ? null : conversation.getContact();
 345            if (contact != null) {
 346                activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 347                        activity.xmppConnectionService.getPresenceGenerator()
 348                                .sendPresenceUpdatesTo(contact));
 349                hideSnackbar();
 350            }
 351        }
 352    };
 353    protected OnClickListener clickToDecryptListener = new OnClickListener() {
 354
 355        @Override
 356        public void onClick(View v) {
 357            PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 358            if (pendingIntent != null) {
 359                try {
 360                    getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 361                            REQUEST_DECRYPT_PGP,
 362                            null,
 363                            0,
 364                            0,
 365                            0);
 366                } catch (SendIntentException e) {
 367                    Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 368                    conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 369                }
 370            }
 371            updateSnackBar(conversation);
 372        }
 373    };
 374    private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 375    private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 376        if (actionId == EditorInfo.IME_ACTION_SEND) {
 377            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 378            if (imm != null && imm.isFullscreenMode()) {
 379                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 380            }
 381            sendMessage();
 382            return true;
 383        } else {
 384            return false;
 385        }
 386    };
 387    private OnClickListener mScrollButtonListener = new OnClickListener() {
 388
 389        @Override
 390        public void onClick(View v) {
 391            stopScrolling();
 392            setSelection(binding.messagesView.getCount() - 1, true);
 393        }
 394    };
 395    private OnClickListener mSendButtonListener = new OnClickListener() {
 396
 397        @Override
 398        public void onClick(View v) {
 399            Object tag = v.getTag();
 400            if (tag instanceof SendButtonAction) {
 401                SendButtonAction action = (SendButtonAction) tag;
 402                switch (action) {
 403                    case TAKE_PHOTO:
 404                    case RECORD_VIDEO:
 405                    case SEND_LOCATION:
 406                    case RECORD_VOICE:
 407                    case CHOOSE_PICTURE:
 408                        attachFile(action.toChoice());
 409                        break;
 410                    case CANCEL:
 411                        if (conversation != null) {
 412                            if (conversation.setCorrectingMessage(null)) {
 413                                binding.textinput.setText("");
 414                                binding.textinput.append(conversation.getDraftMessage());
 415                                conversation.setDraftMessage(null);
 416                            } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 417                                conversation.setNextCounterpart(null);
 418                            }
 419                            updateChatMsgHint();
 420                            updateSendButton();
 421                            updateEditablity();
 422                        }
 423                        break;
 424                    default:
 425                        sendMessage();
 426                }
 427            } else {
 428                sendMessage();
 429            }
 430        }
 431    };
 432    private int completionIndex = 0;
 433    private int lastCompletionLength = 0;
 434    private String incomplete;
 435    private int lastCompletionCursor;
 436    private boolean firstWord = false;
 437    private Message mPendingDownloadableMessage;
 438
 439    private static ConversationFragment findConversationFragment(Activity activity) {
 440        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 441        if (fragment != null && fragment instanceof ConversationFragment) {
 442            return (ConversationFragment) fragment;
 443        }
 444        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 445        if (fragment != null && fragment instanceof ConversationFragment) {
 446            return (ConversationFragment) fragment;
 447        }
 448        return null;
 449    }
 450
 451    public static void startStopPending(Activity activity) {
 452        ConversationFragment fragment = findConversationFragment(activity);
 453        if (fragment != null) {
 454            fragment.messageListAdapter.startStopPending();
 455        }
 456    }
 457
 458    public static void downloadFile(Activity activity, Message message) {
 459        ConversationFragment fragment = findConversationFragment(activity);
 460        if (fragment != null) {
 461            fragment.startDownloadable(message);
 462        }
 463    }
 464
 465    public static void registerPendingMessage(Activity activity, Message message) {
 466        ConversationFragment fragment = findConversationFragment(activity);
 467        if (fragment != null) {
 468            fragment.pendingMessage.push(message);
 469        }
 470    }
 471
 472    public static void openPendingMessage(Activity activity) {
 473        ConversationFragment fragment = findConversationFragment(activity);
 474        if (fragment != null) {
 475            Message message = fragment.pendingMessage.pop();
 476            if (message != null) {
 477                fragment.messageListAdapter.openDownloadable(message);
 478            }
 479        }
 480    }
 481
 482    public static Conversation getConversation(Activity activity) {
 483        return getConversation(activity, R.id.secondary_fragment);
 484    }
 485
 486    private static Conversation getConversation(Activity activity, @IdRes int res) {
 487        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 488        if (fragment != null && fragment instanceof ConversationFragment) {
 489            return ((ConversationFragment) fragment).getConversation();
 490        } else {
 491            return null;
 492        }
 493    }
 494
 495    public static ConversationFragment get(Activity activity) {
 496        FragmentManager fragmentManager = activity.getFragmentManager();
 497        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 498        if (fragment != null && fragment instanceof ConversationFragment) {
 499            return (ConversationFragment) fragment;
 500        } else {
 501            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 502            return fragment != null && fragment instanceof ConversationFragment ? (ConversationFragment) fragment : null;
 503        }
 504    }
 505
 506    public static Conversation getConversationReliable(Activity activity) {
 507        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 508        if (conversation != null) {
 509            return conversation;
 510        }
 511        return getConversation(activity, R.id.main_fragment);
 512    }
 513
 514    private static boolean allGranted(int[] grantResults) {
 515        for (int grantResult : grantResults) {
 516            if (grantResult != PackageManager.PERMISSION_GRANTED) {
 517                return false;
 518            }
 519        }
 520        return true;
 521    }
 522
 523    private static boolean writeGranted(int[] grantResults, String[] permission) {
 524        for (int i = 0; i < grantResults.length; ++i) {
 525            if (Manifest.permission.WRITE_EXTERNAL_STORAGE.equals(permission[i])) {
 526                return grantResults[i] == PackageManager.PERMISSION_GRANTED;
 527            }
 528        }
 529        return false;
 530    }
 531
 532    private static String getFirstDenied(int[] grantResults, String[] permissions) {
 533        for (int i = 0; i < grantResults.length; ++i) {
 534            if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 535                return permissions[i];
 536            }
 537        }
 538        return null;
 539    }
 540
 541    private static boolean scrolledToBottom(AbsListView listView) {
 542        final int count = listView.getCount();
 543        if (count == 0) {
 544            return true;
 545        } else if (listView.getLastVisiblePosition() == count - 1) {
 546            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 547            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 548        } else {
 549            return false;
 550        }
 551    }
 552
 553    private void toggleScrollDownButton() {
 554        toggleScrollDownButton(binding.messagesView);
 555    }
 556
 557    private void toggleScrollDownButton(AbsListView listView) {
 558        if (conversation == null) {
 559            return;
 560        }
 561        if (scrolledToBottom(listView)) {
 562            lastMessageUuid = null;
 563            hideUnreadMessagesCount();
 564        } else {
 565            binding.scrollToBottomButton.setEnabled(true);
 566            binding.scrollToBottomButton.show();
 567            if (lastMessageUuid == null) {
 568                lastMessageUuid = conversation.getLatestMessage().getUuid();
 569            }
 570            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 571                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 572            }
 573        }
 574    }
 575
 576    private int getIndexOf(String uuid, List<Message> messages) {
 577        if (uuid == null) {
 578            return messages.size() - 1;
 579        }
 580        for (int i = 0; i < messages.size(); ++i) {
 581            if (uuid.equals(messages.get(i).getUuid())) {
 582                return i;
 583            } else {
 584                Message next = messages.get(i);
 585                while (next != null && next.wasMergedIntoPrevious()) {
 586                    if (uuid.equals(next.getUuid())) {
 587                        return i;
 588                    }
 589                    next = next.next();
 590                }
 591
 592            }
 593        }
 594        return -1;
 595    }
 596
 597    private ScrollState getScrollPosition() {
 598        final ListView listView = this.binding.messagesView;
 599        if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 600            return null;
 601        } else {
 602            final int pos = listView.getFirstVisiblePosition();
 603            final View view = listView.getChildAt(0);
 604            if (view == null) {
 605                return null;
 606            } else {
 607                return new ScrollState(pos, view.getTop());
 608            }
 609        }
 610    }
 611
 612    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 613        if (scrollPosition != null) {
 614
 615            this.lastMessageUuid = lastMessageUuid;
 616            if (lastMessageUuid != null) {
 617                binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 618            }
 619            //TODO maybe this needs a 'post'
 620            this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 621            toggleScrollDownButton();
 622        }
 623    }
 624
 625    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 626        if (conversation == null) {
 627            return;
 628        }
 629        activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 630
 631            @Override
 632            public void success(Message message) {
 633
 634            }
 635
 636            @Override
 637            public void error(int errorCode, Message object) {
 638                //TODO show possible pgp error
 639            }
 640
 641            @Override
 642            public void userInputRequried(PendingIntent pi, Message object) {
 643
 644            }
 645        });
 646    }
 647
 648    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 649        if (conversation == null) {
 650            return;
 651        }
 652        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 653        prepareFileToast.show();
 654        activity.delegateUriPermissionsToService(uri);
 655        activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 656            @Override
 657            public void inform(final String text) {
 658                hidePrepareFileToast(prepareFileToast);
 659                runOnUiThread(() -> activity.replaceToast(text));
 660            }
 661
 662            @Override
 663            public void success(Message message) {
 664                runOnUiThread(() -> activity.hideToast());
 665                hidePrepareFileToast(prepareFileToast);
 666            }
 667
 668            @Override
 669            public void error(final int errorCode, Message message) {
 670                hidePrepareFileToast(prepareFileToast);
 671                runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 672
 673            }
 674
 675            @Override
 676            public void userInputRequried(PendingIntent pi, Message message) {
 677                hidePrepareFileToast(prepareFileToast);
 678            }
 679        });
 680    }
 681
 682    public void attachEditorContentToConversation(Uri uri) {
 683        mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 684        toggleInputMethod();
 685    }
 686
 687    private void attachImageToConversation(Conversation conversation, Uri uri) {
 688        if (conversation == null) {
 689            return;
 690        }
 691        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 692        prepareFileToast.show();
 693        activity.delegateUriPermissionsToService(uri);
 694        activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 695                new UiCallback<Message>() {
 696
 697                    @Override
 698                    public void userInputRequried(PendingIntent pi, Message object) {
 699                        hidePrepareFileToast(prepareFileToast);
 700                    }
 701
 702                    @Override
 703                    public void success(Message message) {
 704                        hidePrepareFileToast(prepareFileToast);
 705                    }
 706
 707                    @Override
 708                    public void error(final int error, Message message) {
 709                        hidePrepareFileToast(prepareFileToast);
 710                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 711                    }
 712                });
 713    }
 714
 715    private void hidePrepareFileToast(final Toast prepareFileToast) {
 716        if (prepareFileToast != null && activity != null) {
 717            activity.runOnUiThread(prepareFileToast::cancel);
 718        }
 719    }
 720
 721    private void sendMessage() {
 722        if (mediaPreviewAdapter.hasAttachments()) {
 723            commitAttachments();
 724            return;
 725        }
 726        final Editable text = this.binding.textinput.getText();
 727        final String body = text == null ? "" : text.toString();
 728        final Conversation conversation = this.conversation;
 729        if (body.length() == 0 || conversation == null) {
 730            return;
 731        }
 732        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 733            return;
 734        }
 735        final Message message;
 736        if (conversation.getCorrectingMessage() == null) {
 737            message = new Message(conversation, body, conversation.getNextEncryption());
 738            if (conversation.getMode() == Conversation.MODE_MULTI) {
 739                final Jid nextCounterpart = conversation.getNextCounterpart();
 740                if (nextCounterpart != null) {
 741                    message.setCounterpart(nextCounterpart);
 742                    message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 743                    message.setType(Message.TYPE_PRIVATE);
 744                }
 745            }
 746        } else {
 747            message = conversation.getCorrectingMessage();
 748            message.setBody(body);
 749            message.putEdited(message.getUuid(), message.getServerMsgId());
 750            message.setServerMsgId(null);
 751            message.setUuid(UUID.randomUUID().toString());
 752        }
 753        switch (conversation.getNextEncryption()) {
 754            case Message.ENCRYPTION_PGP:
 755                sendPgpMessage(message);
 756                break;
 757            default:
 758                sendMessage(message);
 759        }
 760    }
 761
 762    protected boolean trustKeysIfNeeded(int requestCode) {
 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("conversation", conversation.getUuid());
 781            startActivityForResult(intent, requestCode);
 782            return true;
 783        } else {
 784            return false;
 785        }
 786    }
 787
 788    public void updateChatMsgHint() {
 789        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 790        if (conversation.getCorrectingMessage() != null) {
 791            this.binding.textinput.setHint(R.string.send_corrected_message);
 792        } else if (multi && conversation.getNextCounterpart() != null) {
 793            this.binding.textinput.setHint(getString(
 794                    R.string.send_private_message_to,
 795                    conversation.getNextCounterpart().getResource()));
 796        } else if (multi && !conversation.getMucOptions().participating()) {
 797            this.binding.textinput.setHint(R.string.you_are_not_participating);
 798        } else {
 799            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 800            getActivity().invalidateOptionsMenu();
 801        }
 802    }
 803
 804    public void setupIme() {
 805        this.binding.textinput.refreshIme();
 806    }
 807
 808    private void handleActivityResult(ActivityResult activityResult) {
 809        if (activityResult.resultCode == Activity.RESULT_OK) {
 810            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 811        } else {
 812            handleNegativeActivityResult(activityResult.requestCode);
 813        }
 814    }
 815
 816    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 817        switch (requestCode) {
 818            case REQUEST_TRUST_KEYS_TEXT:
 819                sendMessage();
 820                break;
 821            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 822                commitAttachments();
 823                break;
 824            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 825                final List<Attachment> imageUris = Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 826                mediaPreviewAdapter.addMediaPreviews(imageUris);
 827                toggleInputMethod();
 828                break;
 829            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 830                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 831                if (takePhotoUri != null) {
 832                    mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 833                    toggleInputMethod();
 834                } else {
 835                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 836                }
 837                break;
 838            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 839            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 840            case ATTACHMENT_CHOICE_RECORD_VOICE:
 841                final Attachment.Type type = requestCode == ATTACHMENT_CHOICE_RECORD_VOICE ? Attachment.Type.RECORDING : Attachment.Type.FILE;
 842                final List<Attachment> fileUris = Attachment.extractAttachments(getActivity(), data, type);
 843                mediaPreviewAdapter.addMediaPreviews(fileUris);
 844                toggleInputMethod();
 845                break;
 846            case ATTACHMENT_CHOICE_LOCATION:
 847                double latitude = data.getDoubleExtra("latitude", 0);
 848                double longitude = data.getDoubleExtra("longitude", 0);
 849                Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 850                mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
 851                toggleInputMethod();
 852                break;
 853            case REQUEST_INVITE_TO_CONVERSATION:
 854                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 855                if (invite != null) {
 856                    if (invite.execute(activity)) {
 857                        activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 858                        activity.mToast.show();
 859                    }
 860                }
 861                break;
 862        }
 863    }
 864
 865    private void commitAttachments() {
 866        if (!hasPermissions(REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 867            return;
 868        }
 869        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_ATTACHMENTS)) {
 870            return;
 871        }
 872        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
 873        final PresenceSelector.OnPresenceSelected callback = () -> {
 874            for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
 875                final Attachment attachment = i.next();
 876                if (attachment.getType() == Attachment.Type.LOCATION) {
 877                    attachLocationToConversation(conversation, attachment.getUri());
 878                } else if (attachment.getType() == Attachment.Type.IMAGE) {
 879                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
 880                    attachImageToConversation(conversation, attachment.getUri());
 881                } else {
 882                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 883                    attachFileToConversation(conversation, attachment.getUri(), attachment.getMime());
 884                }
 885            }
 886            mediaPreviewAdapter.notifyDataSetChanged();
 887            toggleInputMethod();
 888        };
 889        if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), attachments, getMaxHttpUploadSize(conversation))) {
 890            callback.onPresenceSelected();
 891        } else {
 892            activity.selectPresence(conversation, callback);
 893        }
 894    }
 895
 896    public void toggleInputMethod() {
 897        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
 898        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
 899        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
 900        updateSendButton();
 901    }
 902
 903    private void handleNegativeActivityResult(int requestCode) {
 904        switch (requestCode) {
 905            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 906                if (pendingTakePhotoUri.clear()) {
 907                    Log.d(Config.LOGTAG, "cleared pending photo uri after negative activity result");
 908                }
 909                break;
 910        }
 911    }
 912
 913    @Override
 914    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 915        super.onActivityResult(requestCode, resultCode, data);
 916        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 917        if (activity != null && activity.xmppConnectionService != null) {
 918            handleActivityResult(activityResult);
 919        } else {
 920            this.postponedActivityResult.push(activityResult);
 921        }
 922    }
 923
 924    public void unblockConversation(final Blockable conversation) {
 925        activity.xmppConnectionService.sendUnblockRequest(conversation);
 926    }
 927
 928    @Override
 929    public void onAttach(Activity activity) {
 930        super.onAttach(activity);
 931        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 932        if (activity instanceof ConversationsActivity) {
 933            this.activity = (ConversationsActivity) activity;
 934        } else {
 935            throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 936        }
 937    }
 938
 939    @Override
 940    public void onDetach() {
 941        super.onDetach();
 942        this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 943    }
 944
 945    @Override
 946    public void onCreate(Bundle savedInstanceState) {
 947        super.onCreate(savedInstanceState);
 948        setHasOptionsMenu(true);
 949    }
 950
 951    @Override
 952    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 953        menuInflater.inflate(R.menu.fragment_conversation, menu);
 954        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 955        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 956        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 957        final MenuItem menuMute = menu.findItem(R.id.action_mute);
 958        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 959
 960
 961        if (conversation != null) {
 962            if (conversation.getMode() == Conversation.MODE_MULTI) {
 963                menuContactDetails.setVisible(false);
 964                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 965            } else {
 966                menuContactDetails.setVisible(!this.conversation.withSelf());
 967                menuMucDetails.setVisible(false);
 968                final XmppConnectionService service = activity.xmppConnectionService;
 969                menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 970            }
 971            if (conversation.isMuted()) {
 972                menuMute.setVisible(false);
 973            } else {
 974                menuUnmute.setVisible(false);
 975            }
 976            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 977            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 978        }
 979        super.onCreateOptionsMenu(menu, menuInflater);
 980    }
 981
 982    @Override
 983    public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 984        this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 985        binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 986
 987        binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 988
 989        binding.textinput.setOnEditorActionListener(mEditorActionListener);
 990        binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 991
 992        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 993
 994        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 995        binding.messagesView.setOnScrollListener(mOnScrollListener);
 996        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 997        mediaPreviewAdapter = new MediaPreviewAdapter(this);
 998        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
 999        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1000        messageListAdapter.setOnContactPictureClicked(message -> {
1001            String fingerprint;
1002            if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
1003                fingerprint = "pgp";
1004            } else {
1005                fingerprint = message.getFingerprint();
1006            }
1007            final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
1008            if (received) {
1009                if (message.getConversation() instanceof Conversation && message.getConversation().getMode() == Conversation.MODE_MULTI) {
1010                    Jid tcp = message.getTrueCounterpart();
1011                    Jid user = message.getCounterpart();
1012                    if (user != null && !user.isBareJid()) {
1013                        final MucOptions mucOptions = ((Conversation) message.getConversation()).getMucOptions();
1014                        if (mucOptions.participating() || ((Conversation) message.getConversation()).getNextCounterpart() != null) {
1015                            if (!mucOptions.isUserInRoom(user) && mucOptions.findUserByRealJid(tcp == null ? null : tcp.asBareJid()) == null) {
1016                                Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
1017                            }
1018                            highlightInConference(user.getResource());
1019                        } else {
1020                            Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
1021                        }
1022                    }
1023                    return;
1024                } else {
1025                    if (!message.getContact().isSelf()) {
1026                        activity.switchToContactDetails(message.getContact(), fingerprint);
1027                        return;
1028                    }
1029                }
1030            }
1031            activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
1032        });
1033        messageListAdapter.setOnContactPictureLongClicked((v, message) -> {
1034            if (message.getStatus() <= Message.STATUS_RECEIVED) {
1035                if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
1036                    Jid tcp = message.getTrueCounterpart();
1037                    Jid cp = message.getCounterpart();
1038                    if (cp != null && !cp.isBareJid()) {
1039                        User userByRealJid = tcp != null ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp) : null;
1040                        final User user = userByRealJid != null ? userByRealJid : conversation.getMucOptions().findUserByFullJid(cp);
1041                        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
1042                        popupMenu.inflate(R.menu.muc_details_context);
1043                        final Menu menu = popupMenu.getMenu();
1044                        MucDetailsContextMenuHelper.configureMucDetailsContextMenu(activity, menu, conversation, user);
1045                        popupMenu.setOnMenuItemClickListener(menuItem -> MucDetailsContextMenuHelper.onContextItemSelected(menuItem, user, conversation, activity));
1046                        popupMenu.show();
1047                    }
1048                }
1049            } else {
1050                activity.showQrCode(conversation.getAccount().getShareableUri());
1051            }
1052        });
1053        messageListAdapter.setOnQuoteListener(this::quoteText);
1054        binding.messagesView.setAdapter(messageListAdapter);
1055
1056        registerForContextMenu(binding.messagesView);
1057
1058        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1059            this.binding.textinput.setCustomInsertionActionModeCallback(new EditMessageActionModeCallback(this.binding.textinput));
1060        }
1061
1062        return binding.getRoot();
1063    }
1064
1065    private void quoteText(String text) {
1066        if (binding.textinput.isEnabled()) {
1067            binding.textinput.insertAsQuote(text);
1068            binding.textinput.requestFocus();
1069            InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1070            if (inputMethodManager != null) {
1071                inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1072            }
1073        }
1074    }
1075
1076    private void quoteMessage(Message message) {
1077        quoteText(MessageUtils.prepareQuote(message));
1078    }
1079
1080    @Override
1081    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1082        synchronized (this.messageList) {
1083            super.onCreateContextMenu(menu, v, menuInfo);
1084            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1085            this.selectedMessage = this.messageList.get(acmi.position);
1086            populateContextMenu(menu);
1087        }
1088    }
1089
1090    private void populateContextMenu(ContextMenu menu) {
1091        final Message m = this.selectedMessage;
1092        final Transferable t = m.getTransferable();
1093        Message relevantForCorrection = m;
1094        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1095            relevantForCorrection = relevantForCorrection.next();
1096        }
1097        if (m.getType() != Message.TYPE_STATUS) {
1098
1099            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1100                return;
1101            }
1102
1103            final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1104            final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1105                    || m.getEncryption() == Message.ENCRYPTION_PGP;
1106            final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1107            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1108            menu.setHeaderTitle(R.string.message_options);
1109            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1110            MenuItem copyLink = menu.findItem(R.id.copy_link);
1111            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1112            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1113            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1114            MenuItem shareWith = menu.findItem(R.id.share_with);
1115            MenuItem sendAgain = menu.findItem(R.id.send_again);
1116            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1117            MenuItem downloadFile = menu.findItem(R.id.download_file);
1118            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1119            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1120            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1121            final boolean showError = m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1122            if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1123                copyMessage.setVisible(true);
1124                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1125                String body = m.getMergedBody().toString();
1126                if (ShareUtil.containsXmppUri(body)) {
1127                    copyLink.setTitle(R.string.copy_jabber_id);
1128                    copyLink.setVisible(true);
1129                } else if (Patterns.AUTOLINK_WEB_URL.matcher(body).find()) {
1130                    copyLink.setVisible(true);
1131                }
1132            }
1133            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1134                retryDecryption.setVisible(true);
1135            }
1136            if (!showError
1137                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1138                    && relevantForCorrection.isLastCorrectableMessage()
1139                    && m.getConversation() instanceof Conversation
1140                    && (((Conversation) m.getConversation()).getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1141                correctMessage.setVisible(true);
1142            }
1143            if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1144                shareWith.setVisible(true);
1145            }
1146            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1147                sendAgain.setVisible(true);
1148            }
1149            if (m.hasFileOnRemoteHost()
1150                    || m.isGeoUri()
1151                    || m.treatAsDownloadable()
1152                    || t instanceof HttpDownloadConnection) {
1153                copyUrl.setVisible(true);
1154            }
1155            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1156                downloadFile.setVisible(true);
1157                downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1158            }
1159            final boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1160                    || m.getStatus() == Message.STATUS_UNSEND
1161                    || m.getStatus() == Message.STATUS_OFFERED;
1162            final boolean cancelable = (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1163            if (cancelable) {
1164                cancelTransmission.setVisible(true);
1165            }
1166            if (m.isFileOrImage() && !deleted && !cancelable) {
1167                String path = m.getRelativeFilePath();
1168                if (path == null || !path.startsWith("/") || FileBackend.isInDirectoryThatShouldNotBeScanned(getActivity(), path)) {
1169                    deleteFile.setVisible(true);
1170                    deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1171                }
1172            }
1173            if (showError) {
1174                showErrorMessage.setVisible(true);
1175            }
1176        }
1177    }
1178
1179    @Override
1180    public boolean onContextItemSelected(MenuItem item) {
1181        switch (item.getItemId()) {
1182            case R.id.share_with:
1183                ShareUtil.share(activity, selectedMessage);
1184                return true;
1185            case R.id.correct_message:
1186                correctMessage(selectedMessage);
1187                return true;
1188            case R.id.copy_message:
1189                ShareUtil.copyToClipboard(activity, selectedMessage);
1190                return true;
1191            case R.id.copy_link:
1192                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1193                return true;
1194            case R.id.quote_message:
1195                quoteMessage(selectedMessage);
1196                return true;
1197            case R.id.send_again:
1198                resendMessage(selectedMessage);
1199                return true;
1200            case R.id.copy_url:
1201                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1202                return true;
1203            case R.id.download_file:
1204                startDownloadable(selectedMessage);
1205                return true;
1206            case R.id.cancel_transmission:
1207                cancelTransmission(selectedMessage);
1208                return true;
1209            case R.id.retry_decryption:
1210                retryDecryption(selectedMessage);
1211                return true;
1212            case R.id.delete_file:
1213                deleteFile(selectedMessage);
1214                return true;
1215            case R.id.show_error_message:
1216                showErrorMessage(selectedMessage);
1217                return true;
1218            default:
1219                return super.onContextItemSelected(item);
1220        }
1221    }
1222
1223    @Override
1224    public boolean onOptionsItemSelected(final MenuItem item) {
1225        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1226            return false;
1227        } else if (conversation == null) {
1228            return super.onOptionsItemSelected(item);
1229        }
1230        switch (item.getItemId()) {
1231            case R.id.encryption_choice_axolotl:
1232            case R.id.encryption_choice_pgp:
1233            case R.id.encryption_choice_none:
1234                handleEncryptionSelection(item);
1235                break;
1236            case R.id.attach_choose_picture:
1237            case R.id.attach_take_picture:
1238            case R.id.attach_record_video:
1239            case R.id.attach_choose_file:
1240            case R.id.attach_record_voice:
1241            case R.id.attach_location:
1242                handleAttachmentSelection(item);
1243                break;
1244            case R.id.action_archive:
1245                activity.xmppConnectionService.archiveConversation(conversation);
1246                break;
1247            case R.id.action_contact_details:
1248                activity.switchToContactDetails(conversation.getContact());
1249                break;
1250            case R.id.action_muc_details:
1251                Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1252                intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1253                intent.putExtra("uuid", conversation.getUuid());
1254                startActivity(intent);
1255                break;
1256            case R.id.action_invite:
1257                startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1258                break;
1259            case R.id.action_clear_history:
1260                clearHistoryDialog(conversation);
1261                break;
1262            case R.id.action_mute:
1263                muteConversationDialog(conversation);
1264                break;
1265            case R.id.action_unmute:
1266                unmuteConversation(conversation);
1267                break;
1268            case R.id.action_block:
1269            case R.id.action_unblock:
1270                final Activity activity = getActivity();
1271                if (activity instanceof XmppActivity) {
1272                    BlockContactDialog.show((XmppActivity) activity, conversation);
1273                }
1274                break;
1275            default:
1276                break;
1277        }
1278        return super.onOptionsItemSelected(item);
1279    }
1280
1281    private void handleAttachmentSelection(MenuItem item) {
1282        switch (item.getItemId()) {
1283            case R.id.attach_choose_picture:
1284                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1285                break;
1286            case R.id.attach_take_picture:
1287                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1288                break;
1289            case R.id.attach_record_video:
1290                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1291                break;
1292            case R.id.attach_choose_file:
1293                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1294                break;
1295            case R.id.attach_record_voice:
1296                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1297                break;
1298            case R.id.attach_location:
1299                attachFile(ATTACHMENT_CHOICE_LOCATION);
1300                break;
1301        }
1302    }
1303
1304    private void handleEncryptionSelection(MenuItem item) {
1305        if (conversation == null) {
1306            return;
1307        }
1308        switch (item.getItemId()) {
1309            case R.id.encryption_choice_none:
1310                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1311                item.setChecked(true);
1312                break;
1313            case R.id.encryption_choice_pgp:
1314                if (activity.hasPgp()) {
1315                    if (conversation.getAccount().getPgpSignature() != null) {
1316                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1317                        item.setChecked(true);
1318                    } else {
1319                        activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1320                    }
1321                } else {
1322                    activity.showInstallPgpDialog();
1323                }
1324                break;
1325            case R.id.encryption_choice_axolotl:
1326                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1327                        + "Enabled axolotl for Contact " + conversation.getContact().getJid());
1328                conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1329                item.setChecked(true);
1330                break;
1331            default:
1332                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1333                break;
1334        }
1335        activity.xmppConnectionService.updateConversation(conversation);
1336        updateChatMsgHint();
1337        getActivity().invalidateOptionsMenu();
1338        activity.refreshUi();
1339    }
1340
1341    public void attachFile(final int attachmentChoice) {
1342        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1343            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO)) {
1344                return;
1345            }
1346        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1347            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)) {
1348                return;
1349            }
1350        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1351            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1352                return;
1353            }
1354        }
1355        try {
1356            activity.getPreferences().edit()
1357                    .putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1358                    .apply();
1359        } catch (IllegalArgumentException e) {
1360            //just do not save
1361        }
1362        final int encryption = conversation.getNextEncryption();
1363        final int mode = conversation.getMode();
1364        if (encryption == Message.ENCRYPTION_PGP) {
1365            if (activity.hasPgp()) {
1366                if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1367                    activity.xmppConnectionService.getPgpEngine().hasKey(
1368                            conversation.getContact(),
1369                            new UiCallback<Contact>() {
1370
1371                                @Override
1372                                public void userInputRequried(PendingIntent pi, Contact contact) {
1373                                    startPendingIntent(pi, attachmentChoice);
1374                                }
1375
1376                                @Override
1377                                public void success(Contact contact) {
1378                                    selectPresenceToAttachFile(attachmentChoice);
1379                                }
1380
1381                                @Override
1382                                public void error(int error, Contact contact) {
1383                                    activity.replaceToast(getString(error));
1384                                }
1385                            });
1386                } else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1387                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1388                        Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1389                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1390                        warning.show();
1391                    }
1392                    selectPresenceToAttachFile(attachmentChoice);
1393                } else {
1394                    showNoPGPKeyDialog(false, (dialog, which) -> {
1395                        conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1396                        activity.xmppConnectionService.updateConversation(conversation);
1397                        selectPresenceToAttachFile(attachmentChoice);
1398                    });
1399                }
1400            } else {
1401                activity.showInstallPgpDialog();
1402            }
1403        } else {
1404            selectPresenceToAttachFile(attachmentChoice);
1405        }
1406    }
1407
1408    @Override
1409    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1410        if (grantResults.length > 0) {
1411            if (allGranted(grantResults)) {
1412                switch (requestCode) {
1413                    case REQUEST_START_DOWNLOAD:
1414                        if (this.mPendingDownloadableMessage != null) {
1415                            startDownloadable(this.mPendingDownloadableMessage);
1416                        }
1417                        break;
1418                    case REQUEST_ADD_EDITOR_CONTENT:
1419                        if (this.mPendingEditorContent != null) {
1420                            attachEditorContentToConversation(this.mPendingEditorContent);
1421                        }
1422                        break;
1423                    case REQUEST_COMMIT_ATTACHMENTS:
1424                        commitAttachments();
1425                        break;
1426                    default:
1427                        attachFile(requestCode);
1428                        break;
1429                }
1430            } else {
1431                @StringRes int res;
1432                String firstDenied = getFirstDenied(grantResults, permissions);
1433                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1434                    res = R.string.no_microphone_permission;
1435                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1436                    res = R.string.no_camera_permission;
1437                } else {
1438                    res = R.string.no_storage_permission;
1439                }
1440                Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1441            }
1442        }
1443        if (writeGranted(grantResults, permissions)) {
1444            if (activity != null && activity.xmppConnectionService != null) {
1445                activity.xmppConnectionService.restartFileObserver();
1446            }
1447            refresh();
1448        }
1449    }
1450
1451    public void startDownloadable(Message message) {
1452        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1453            this.mPendingDownloadableMessage = message;
1454            return;
1455        }
1456        Transferable transferable = message.getTransferable();
1457        if (transferable != null) {
1458            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1459                createNewConnection(message);
1460                return;
1461            }
1462            if (!transferable.start()) {
1463                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1464                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1465            }
1466        } else if (message.treatAsDownloadable()) {
1467            createNewConnection(message);
1468        }
1469    }
1470
1471    private void createNewConnection(final Message message) {
1472        if (!activity.xmppConnectionService.getHttpConnectionManager().checkConnection(message)) {
1473            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1474            return;
1475        }
1476        activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1477    }
1478
1479    @SuppressLint("InflateParams")
1480    protected void clearHistoryDialog(final Conversation conversation) {
1481        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1482        builder.setTitle(getString(R.string.clear_conversation_history));
1483        final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1484        final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1485        builder.setView(dialogView);
1486        builder.setNegativeButton(getString(R.string.cancel), null);
1487        builder.setPositiveButton(getString(R.string.confirm), (dialog, which) -> {
1488            this.activity.xmppConnectionService.clearConversationHistory(conversation);
1489            if (endConversationCheckBox.isChecked()) {
1490                this.activity.xmppConnectionService.archiveConversation(conversation);
1491                this.activity.onConversationArchived(conversation);
1492            } else {
1493                activity.onConversationsListItemUpdated();
1494                refresh();
1495            }
1496        });
1497        builder.create().show();
1498    }
1499
1500    protected void muteConversationDialog(final Conversation conversation) {
1501        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1502        builder.setTitle(R.string.disable_notifications);
1503        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1504        final CharSequence[] labels = new CharSequence[durations.length];
1505        for (int i = 0; i < durations.length; ++i) {
1506            if (durations[i] == -1) {
1507                labels[i] = getString(R.string.until_further_notice);
1508            } else {
1509                labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1510            }
1511        }
1512        builder.setItems(labels, (dialog, which) -> {
1513            final long till;
1514            if (durations[which] == -1) {
1515                till = Long.MAX_VALUE;
1516            } else {
1517                till = System.currentTimeMillis() + (durations[which] * 1000);
1518            }
1519            conversation.setMutedTill(till);
1520            activity.xmppConnectionService.updateConversation(conversation);
1521            activity.onConversationsListItemUpdated();
1522            refresh();
1523            getActivity().invalidateOptionsMenu();
1524        });
1525        builder.create().show();
1526    }
1527
1528    private boolean hasPermissions(int requestCode, String... permissions) {
1529        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1530            final List<String> missingPermissions = new ArrayList<>();
1531            for (String permission : permissions) {
1532                if (Config.ONLY_INTERNAL_STORAGE && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1533                    continue;
1534                }
1535                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1536                    missingPermissions.add(permission);
1537                }
1538            }
1539            if (missingPermissions.size() == 0) {
1540                return true;
1541            } else {
1542                requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1543                return false;
1544            }
1545        } else {
1546            return true;
1547        }
1548    }
1549
1550    public void unmuteConversation(final Conversation conversation) {
1551        conversation.setMutedTill(0);
1552        this.activity.xmppConnectionService.updateConversation(conversation);
1553        this.activity.onConversationsListItemUpdated();
1554        refresh();
1555        getActivity().invalidateOptionsMenu();
1556    }
1557
1558    protected void selectPresenceToAttachFile(final int attachmentChoice) {
1559        final Account account = conversation.getAccount();
1560        final PresenceSelector.OnPresenceSelected callback = () -> {
1561            Intent intent = new Intent();
1562            boolean chooser = false;
1563            switch (attachmentChoice) {
1564                case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1565                    intent.setAction(Intent.ACTION_GET_CONTENT);
1566                    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1567                    intent.setType("image/*");
1568                    chooser = true;
1569                    break;
1570                case ATTACHMENT_CHOICE_RECORD_VIDEO:
1571                    intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1572                    break;
1573                case ATTACHMENT_CHOICE_TAKE_PHOTO:
1574                    final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1575                    pendingTakePhotoUri.push(uri);
1576                    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1577                    intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1578                    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1579                    intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1580                    break;
1581                case ATTACHMENT_CHOICE_CHOOSE_FILE:
1582                    chooser = true;
1583                    intent.setType("*/*");
1584                    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1585                    intent.addCategory(Intent.CATEGORY_OPENABLE);
1586                    intent.setAction(Intent.ACTION_GET_CONTENT);
1587                    break;
1588                case ATTACHMENT_CHOICE_RECORD_VOICE:
1589                    intent = new Intent(getActivity(), RecordingActivity.class);
1590                    break;
1591                case ATTACHMENT_CHOICE_LOCATION:
1592                    intent = GeoHelper.getFetchIntent(activity);
1593                    break;
1594            }
1595            if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1596                if (chooser) {
1597                    startActivityForResult(
1598                            Intent.createChooser(intent, getString(R.string.perform_action_with)),
1599                            attachmentChoice);
1600                } else {
1601                    startActivityForResult(intent, attachmentChoice);
1602                }
1603            }
1604        };
1605        if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1606            conversation.setNextCounterpart(null);
1607            callback.onPresenceSelected();
1608        } else {
1609            activity.selectPresence(conversation, callback);
1610        }
1611    }
1612
1613    @Override
1614    public void onResume() {
1615        super.onResume();
1616        binding.messagesView.post(this::fireReadEvent);
1617    }
1618
1619    private void fireReadEvent() {
1620        if (activity != null && this.conversation != null) {
1621            String uuid = getLastVisibleMessageUuid();
1622            if (uuid != null) {
1623                activity.onConversationRead(this.conversation, uuid);
1624            }
1625        }
1626    }
1627
1628    private String getLastVisibleMessageUuid() {
1629        if (binding == null) {
1630            return null;
1631        }
1632        synchronized (this.messageList) {
1633            int pos = binding.messagesView.getLastVisiblePosition();
1634            if (pos >= 0) {
1635                Message message = null;
1636                for (int i = pos; i >= 0; --i) {
1637                    try {
1638                        message = (Message) binding.messagesView.getItemAtPosition(i);
1639                    } catch (IndexOutOfBoundsException e) {
1640                        //should not happen if we synchronize properly. however if that fails we just gonna try item -1
1641                        continue;
1642                    }
1643                    if (message.getType() != Message.TYPE_STATUS) {
1644                        break;
1645                    }
1646                }
1647                if (message != null) {
1648                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1649                        message = message.next();
1650                    }
1651                    return message.getUuid();
1652                }
1653            }
1654        }
1655        return null;
1656    }
1657
1658    private void showErrorMessage(final Message message) {
1659        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1660        builder.setTitle(R.string.error_message);
1661        builder.setMessage(message.getErrorMessage());
1662        builder.setNegativeButton(R.string.copy_to_clipboard, (dialog, which) -> {
1663            activity.copyTextToClipboard(message.getErrorMessage(),R.string.error_message);
1664            Toast.makeText(activity,R.string.error_message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1665        });
1666        builder.setPositiveButton(R.string.confirm, null);
1667        builder.create().show();
1668    }
1669
1670
1671    private void deleteFile(final Message message) {
1672        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1673        builder.setNegativeButton(R.string.cancel, null);
1674        builder.setTitle(R.string.delete_file_dialog);
1675        builder.setMessage(R.string.delete_file_dialog_msg);
1676        builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
1677            if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1678                message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1679                activity.onConversationsListItemUpdated();
1680                refresh();
1681            }
1682        });
1683        builder.create().show();
1684
1685    }
1686
1687    private void resendMessage(final Message message) {
1688        if (message.isFileOrImage()) {
1689            if (!(message.getConversation() instanceof Conversation)) {
1690                return;
1691            }
1692            final Conversation conversation = (Conversation) message.getConversation();
1693            DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1694            if (file.exists()) {
1695                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1696                if (!message.hasFileOnRemoteHost()
1697                        && xmppConnection != null
1698                        && conversation.getMode() == Conversational.MODE_SINGLE
1699                        && !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1700                    activity.selectPresence(conversation, () -> {
1701                        message.setCounterpart(conversation.getNextCounterpart());
1702                        activity.xmppConnectionService.resendFailedMessages(message);
1703                        new Handler().post(() -> {
1704                            int size = messageList.size();
1705                            this.binding.messagesView.setSelection(size - 1);
1706                        });
1707                    });
1708                    return;
1709                }
1710            } else {
1711                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1712                message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1713                activity.onConversationsListItemUpdated();
1714                refresh();
1715                return;
1716            }
1717        }
1718        activity.xmppConnectionService.resendFailedMessages(message);
1719        new Handler().post(() -> {
1720            int size = messageList.size();
1721            this.binding.messagesView.setSelection(size - 1);
1722        });
1723    }
1724
1725    private void cancelTransmission(Message message) {
1726        Transferable transferable = message.getTransferable();
1727        if (transferable != null) {
1728            transferable.cancel();
1729        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
1730            activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
1731        }
1732    }
1733
1734    private void retryDecryption(Message message) {
1735        message.setEncryption(Message.ENCRYPTION_PGP);
1736        activity.onConversationsListItemUpdated();
1737        refresh();
1738        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1739    }
1740
1741    public void privateMessageWith(final Jid counterpart) {
1742        if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1743            activity.xmppConnectionService.sendChatState(conversation);
1744        }
1745        this.binding.textinput.setText("");
1746        this.conversation.setNextCounterpart(counterpart);
1747        updateChatMsgHint();
1748        updateSendButton();
1749        updateEditablity();
1750    }
1751
1752    private void correctMessage(Message message) {
1753        while (message.mergeable(message.next())) {
1754            message = message.next();
1755        }
1756        this.conversation.setCorrectingMessage(message);
1757        final Editable editable = binding.textinput.getText();
1758        this.conversation.setDraftMessage(editable.toString());
1759        this.binding.textinput.setText("");
1760        this.binding.textinput.append(message.getBody());
1761
1762    }
1763
1764    private void highlightInConference(String nick) {
1765        final Editable editable = this.binding.textinput.getText();
1766        String oldString = editable.toString().trim();
1767        final int pos = this.binding.textinput.getSelectionStart();
1768        if (oldString.isEmpty() || pos == 0) {
1769            editable.insert(0, nick + ": ");
1770        } else {
1771            final char before = editable.charAt(pos - 1);
1772            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1773            if (before == '\n') {
1774                editable.insert(pos, nick + ": ");
1775            } else {
1776                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1777                    if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1778                        editable.insert(pos - 2, ", " + nick);
1779                        return;
1780                    }
1781                }
1782                editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1783                if (Character.isWhitespace(after)) {
1784                    this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1785                }
1786            }
1787        }
1788    }
1789
1790    @Override
1791    public void startActivityForResult(Intent intent, int requestCode) {
1792        final Activity activity = getActivity();
1793        if (activity instanceof ConversationsActivity) {
1794            ((ConversationsActivity) activity).clearPendingViewIntent();
1795        }
1796        super.startActivityForResult(intent, requestCode);
1797    }
1798
1799    @Override
1800    public void onSaveInstanceState(Bundle outState) {
1801        super.onSaveInstanceState(outState);
1802        if (conversation != null) {
1803            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1804            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1805            final Uri uri = pendingTakePhotoUri.peek();
1806            if (uri != null) {
1807                outState.putString(STATE_PHOTO_URI, uri.toString());
1808            }
1809            final ScrollState scrollState = getScrollPosition();
1810            if (scrollState != null) {
1811                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1812            }
1813            final ArrayList<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1814            if (attachments.size() > 0) {
1815                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
1816            }
1817        }
1818    }
1819
1820    @Override
1821    public void onActivityCreated(Bundle savedInstanceState) {
1822        super.onActivityCreated(savedInstanceState);
1823        if (savedInstanceState == null) {
1824            return;
1825        }
1826        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1827        ArrayList<Attachment> attachments = savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
1828        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1829        if (uuid != null) {
1830            QuickLoader.set(uuid);
1831            this.pendingConversationsUuid.push(uuid);
1832            if (attachments != null && attachments.size() > 0) {
1833                this.pendingMediaPreviews.push(attachments);
1834            }
1835            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1836            if (takePhotoUri != null) {
1837                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1838            }
1839            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1840        }
1841    }
1842
1843    @Override
1844    public void onStart() {
1845        super.onStart();
1846        if (this.reInitRequiredOnStart && this.conversation != null) {
1847            final Bundle extras = pendingExtras.pop();
1848            reInit(this.conversation, extras != null);
1849            if (extras != null) {
1850                processExtras(extras);
1851            }
1852        } else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1853            final String uuid = pendingConversationsUuid.pop();
1854            Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1855            if (uuid != null) {
1856                findAndReInitByUuidOrArchive(uuid);
1857            }
1858        }
1859    }
1860
1861    @Override
1862    public void onStop() {
1863        super.onStop();
1864        final Activity activity = getActivity();
1865        messageListAdapter.unregisterListenerInAudioPlayer();
1866        if (activity == null || !activity.isChangingConfigurations()) {
1867            hideSoftKeyboard(activity);
1868            messageListAdapter.stopAudioPlayer();
1869        }
1870        if (this.conversation != null) {
1871            final String msg = this.binding.textinput.getText().toString();
1872            storeNextMessage(msg);
1873            updateChatState(this.conversation, msg);
1874            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1875        }
1876        this.reInitRequiredOnStart = true;
1877    }
1878
1879    private void updateChatState(final Conversation conversation, final String msg) {
1880        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1881        Account.State status = conversation.getAccount().getStatus();
1882        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1883            activity.xmppConnectionService.sendChatState(conversation);
1884        }
1885    }
1886
1887    private void saveMessageDraftStopAudioPlayer() {
1888        final Conversation previousConversation = this.conversation;
1889        if (this.activity == null || this.binding == null || previousConversation == null) {
1890            return;
1891        }
1892        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1893        final String msg = this.binding.textinput.getText().toString();
1894        storeNextMessage(msg);
1895        updateChatState(this.conversation, msg);
1896        messageListAdapter.stopAudioPlayer();
1897        mediaPreviewAdapter.clearPreviews();
1898        toggleInputMethod();
1899    }
1900
1901    public void reInit(Conversation conversation, Bundle extras) {
1902        QuickLoader.set(conversation.getUuid());
1903        this.saveMessageDraftStopAudioPlayer();
1904        this.clearPending();
1905        if (this.reInit(conversation, extras != null)) {
1906            if (extras != null) {
1907                processExtras(extras);
1908            }
1909            this.reInitRequiredOnStart = false;
1910        } else {
1911            this.reInitRequiredOnStart = true;
1912            pendingExtras.push(extras);
1913        }
1914        resetUnreadMessagesCount();
1915    }
1916
1917    private void reInit(Conversation conversation) {
1918        reInit(conversation, false);
1919    }
1920
1921    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1922        if (conversation == null) {
1923            return false;
1924        }
1925        this.conversation = conversation;
1926        //once we set the conversation all is good and it will automatically do the right thing in onStart()
1927        if (this.activity == null || this.binding == null) {
1928            return false;
1929        }
1930
1931        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1932            activity.onConversationArchived(this.conversation);
1933            return false;
1934        }
1935
1936        stopScrolling();
1937        Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1938
1939        if (this.conversation.isRead() && hasExtras) {
1940            Log.d(Config.LOGTAG, "trimming conversation");
1941            this.conversation.trim();
1942        }
1943
1944        setupIme();
1945
1946        final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1947
1948        this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1949        this.binding.textinput.setKeyboardListener(null);
1950        this.binding.textinput.setText("");
1951        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
1952        if (participating) {
1953            this.binding.textinput.append(this.conversation.getNextMessage());
1954        }
1955        this.binding.textinput.setKeyboardListener(this);
1956        messageListAdapter.updatePreferences();
1957        refresh(false);
1958        this.conversation.messagesLoaded.set(true);
1959        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1960
1961        if (hasExtras || scrolledToBottomAndNoPending) {
1962            resetUnreadMessagesCount();
1963            synchronized (this.messageList) {
1964                Log.d(Config.LOGTAG, "jump to first unread message");
1965                final Message first = conversation.getFirstUnreadMessage();
1966                final int bottom = Math.max(0, this.messageList.size() - 1);
1967                final int pos;
1968                final boolean jumpToBottom;
1969                if (first == null) {
1970                    pos = bottom;
1971                    jumpToBottom = true;
1972                } else {
1973                    int i = getIndexOf(first.getUuid(), this.messageList);
1974                    pos = i < 0 ? bottom : i;
1975                    jumpToBottom = false;
1976                }
1977                setSelection(pos, jumpToBottom);
1978            }
1979        }
1980
1981
1982        this.binding.messagesView.post(this::fireReadEvent);
1983        //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
1984        activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1985        return true;
1986    }
1987
1988    private void resetUnreadMessagesCount() {
1989        lastMessageUuid = null;
1990        hideUnreadMessagesCount();
1991    }
1992
1993    private void hideUnreadMessagesCount() {
1994        if (this.binding == null) {
1995            return;
1996        }
1997        this.binding.scrollToBottomButton.setEnabled(false);
1998        this.binding.scrollToBottomButton.hide();
1999        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2000    }
2001
2002    private void setSelection(int pos, boolean jumpToBottom) {
2003        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2004        this.binding.messagesView.post(() -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2005        this.binding.messagesView.post(this::fireReadEvent);
2006    }
2007
2008
2009    private boolean scrolledToBottom() {
2010        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2011    }
2012
2013    private void processExtras(Bundle extras) {
2014        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2015        final String text = extras.getString(Intent.EXTRA_TEXT);
2016        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2017        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2018        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2019        final boolean doNotAppend = extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2020        final List<Uri> uris = extractUris(extras);
2021        if (uris != null && uris.size() > 0) {
2022            final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2023            mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), cleanedUris));
2024            toggleInputMethod();
2025            return;
2026        }
2027        if (nick != null) {
2028            if (pm) {
2029                Jid jid = conversation.getJid();
2030                try {
2031                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2032                    privateMessageWith(next);
2033                } catch (final IllegalArgumentException ignored) {
2034                    //do nothing
2035                }
2036            } else {
2037                final MucOptions mucOptions = conversation.getMucOptions();
2038                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2039                    highlightInConference(nick);
2040                }
2041            }
2042        } else {
2043            if (text != null && asQuote) {
2044                quoteText(text);
2045            } else {
2046                appendText(text, doNotAppend);
2047            }
2048        }
2049        final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2050        if (message != null) {
2051            startDownloadable(message);
2052        }
2053    }
2054
2055    private List<Uri> extractUris(Bundle extras) {
2056        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2057        if (uris != null) {
2058            return uris;
2059        }
2060        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2061        if (uri != null) {
2062            return Collections.singletonList(uri);
2063        } else {
2064            return null;
2065        }
2066    }
2067
2068    private List<Uri> cleanUris(List<Uri> uris) {
2069        Iterator<Uri> iterator = uris.iterator();
2070        while (iterator.hasNext()) {
2071            final Uri uri = iterator.next();
2072            if (FileBackend.weOwnFile(getActivity(), uri)) {
2073                iterator.remove();
2074                Toast.makeText(getActivity(), R.string.security_violation_not_attaching_file, Toast.LENGTH_SHORT).show();
2075            }
2076        }
2077        return uris;
2078    }
2079
2080    private boolean showBlockSubmenu(View view) {
2081        final Jid jid = conversation.getJid();
2082        final boolean showReject = !conversation.isWithStranger() && conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2083        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2084        popupMenu.inflate(R.menu.block);
2085        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2086        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2087        popupMenu.setOnMenuItemClickListener(menuItem -> {
2088            Blockable blockable;
2089            switch (menuItem.getItemId()) {
2090                case R.id.reject:
2091                    activity.xmppConnectionService.stopPresenceUpdatesTo(conversation.getContact());
2092                    updateSnackBar(conversation);
2093                    return true;
2094                case R.id.block_domain:
2095                    blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2096                    break;
2097                default:
2098                    blockable = conversation;
2099            }
2100            BlockContactDialog.show(activity, blockable);
2101            return true;
2102        });
2103        popupMenu.show();
2104        return true;
2105    }
2106
2107    private void updateSnackBar(final Conversation conversation) {
2108        final Account account = conversation.getAccount();
2109        final XmppConnection connection = account.getXmppConnection();
2110        final int mode = conversation.getMode();
2111        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2112        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2113            return;
2114        }
2115        if (account.getStatus() == Account.State.DISABLED) {
2116            showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2117        } else if (conversation.isBlocked()) {
2118            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2119        } else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2120            showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2121        } else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2122            showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2123        } else if (mode == Conversation.MODE_MULTI
2124                && !conversation.getMucOptions().online()
2125                && account.getStatus() == Account.State.ONLINE) {
2126            switch (conversation.getMucOptions().getError()) {
2127                case NICK_IN_USE:
2128                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2129                    break;
2130                case NO_RESPONSE:
2131                    showSnackbar(R.string.joining_conference, 0, null);
2132                    break;
2133                case SERVER_NOT_FOUND:
2134                    if (conversation.receivedMessagesCount() > 0) {
2135                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2136                    } else {
2137                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2138                    }
2139                    break;
2140                case REMOTE_SERVER_TIMEOUT:
2141                    if (conversation.receivedMessagesCount() > 0) {
2142                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2143                    } else {
2144                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2145                    }
2146                    break;
2147                case PASSWORD_REQUIRED:
2148                    showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2149                    break;
2150                case BANNED:
2151                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2152                    break;
2153                case MEMBERS_ONLY:
2154                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2155                    break;
2156                case RESOURCE_CONSTRAINT:
2157                    showSnackbar(R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2158                    break;
2159                case KICKED:
2160                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2161                    break;
2162                case UNKNOWN:
2163                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2164                    break;
2165                case INVALID_NICK:
2166                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2167                case SHUTDOWN:
2168                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2169                    break;
2170                case DESTROYED:
2171                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2172                    break;
2173                default:
2174                    hideSnackbar();
2175                    break;
2176            }
2177        } else if (account.hasPendingPgpIntent(conversation)) {
2178            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2179        } else if (connection != null
2180                && connection.getFeatures().blocking()
2181                && conversation.countMessages() != 0
2182                && !conversation.isBlocked()
2183                && conversation.isWithStranger()) {
2184            showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2185        } else {
2186            hideSnackbar();
2187        }
2188    }
2189
2190    @Override
2191    public void refresh() {
2192        if (this.binding == null) {
2193            Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2194            return;
2195        }
2196        if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2197            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2198                activity.onConversationArchived(this.conversation);
2199                return;
2200            }
2201        }
2202        this.refresh(true);
2203    }
2204
2205    private void refresh(boolean notifyConversationRead) {
2206        synchronized (this.messageList) {
2207            if (this.conversation != null) {
2208                conversation.populateWithMessages(this.messageList);
2209                updateSnackBar(conversation);
2210                updateStatusMessages();
2211                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2212                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2213                    binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2214                }
2215                this.messageListAdapter.notifyDataSetChanged();
2216                updateChatMsgHint();
2217                if (notifyConversationRead && activity != null) {
2218                    binding.messagesView.post(this::fireReadEvent);
2219                }
2220                updateSendButton();
2221                updateEditablity();
2222                activity.invalidateOptionsMenu();
2223            }
2224        }
2225    }
2226
2227    protected void messageSent() {
2228        mSendingPgpMessage.set(false);
2229        this.binding.textinput.setText("");
2230        if (conversation.setCorrectingMessage(null)) {
2231            this.binding.textinput.append(conversation.getDraftMessage());
2232            conversation.setDraftMessage(null);
2233        }
2234        storeNextMessage();
2235        updateChatMsgHint();
2236        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2237        final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2238        if (prefScrollToBottom || scrolledToBottom()) {
2239            new Handler().post(() -> {
2240                int size = messageList.size();
2241                this.binding.messagesView.setSelection(size - 1);
2242            });
2243        }
2244    }
2245
2246    private boolean storeNextMessage() {
2247        return storeNextMessage(this.binding.textinput.getText().toString());
2248    }
2249
2250    private boolean storeNextMessage(String msg) {
2251        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
2252        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && participating && this.conversation.setNextMessage(msg)) {
2253            this.activity.xmppConnectionService.updateConversation(this.conversation);
2254            return true;
2255        }
2256        return false;
2257    }
2258
2259    public void doneSendingPgpMessage() {
2260        mSendingPgpMessage.set(false);
2261    }
2262
2263    public long getMaxHttpUploadSize(Conversation conversation) {
2264        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2265        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2266    }
2267
2268    private void updateEditablity() {
2269        boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2270        this.binding.textinput.setFocusable(canWrite);
2271        this.binding.textinput.setFocusableInTouchMode(canWrite);
2272        this.binding.textSendButton.setEnabled(canWrite);
2273        this.binding.textinput.setCursorVisible(canWrite);
2274        this.binding.textinput.setEnabled(canWrite);
2275    }
2276
2277    public void updateSendButton() {
2278        boolean hasAttachments = mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2279        boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2280        final Conversation c = this.conversation;
2281        final Presence.Status status;
2282        final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2283        final SendButtonAction action;
2284        if (hasAttachments) {
2285            action = SendButtonAction.TEXT;
2286        } else {
2287            action = SendButtonTool.getAction(getActivity(), c, text);
2288        }
2289        if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2290            if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2291                status = Presence.Status.OFFLINE;
2292            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2293                status = c.getContact().getShownStatus();
2294            } else {
2295                status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2296            }
2297        } else {
2298            status = Presence.Status.OFFLINE;
2299        }
2300        this.binding.textSendButton.setTag(action);
2301        this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2302    }
2303
2304    protected void updateDateSeparators() {
2305        synchronized (this.messageList) {
2306            DateSeparator.addAll(this.messageList);
2307        }
2308    }
2309
2310    protected void updateStatusMessages() {
2311        updateDateSeparators();
2312        synchronized (this.messageList) {
2313            if (showLoadMoreMessages(conversation)) {
2314                this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2315            }
2316            if (conversation.getMode() == Conversation.MODE_SINGLE) {
2317                ChatState state = conversation.getIncomingChatState();
2318                if (state == ChatState.COMPOSING) {
2319                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2320                } else if (state == ChatState.PAUSED) {
2321                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2322                } else {
2323                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2324                        final Message message = this.messageList.get(i);
2325                        if (message.getType() != Message.TYPE_STATUS) {
2326                            if (message.getStatus() == Message.STATUS_RECEIVED) {
2327                                return;
2328                            } else {
2329                                if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2330                                    this.messageList.add(i + 1,
2331                                            Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2332                                    return;
2333                                }
2334                            }
2335                        }
2336                    }
2337                }
2338            } else {
2339                final MucOptions mucOptions = conversation.getMucOptions();
2340                final List<MucOptions.User> allUsers = mucOptions.getUsers();
2341                final Set<ReadByMarker> addedMarkers = new HashSet<>();
2342                ChatState state = ChatState.COMPOSING;
2343                List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2344                if (users.size() == 0) {
2345                    state = ChatState.PAUSED;
2346                    users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2347                }
2348                if (mucOptions.isPrivateAndNonAnonymous()) {
2349                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2350                        final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2351                        final List<MucOptions.User> shownMarkers = new ArrayList<>();
2352                        for (ReadByMarker marker : markersForMessage) {
2353                            if (!ReadByMarker.contains(marker, addedMarkers)) {
2354                                addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2355                                MucOptions.User user = mucOptions.findUser(marker);
2356                                if (user != null && !users.contains(user)) {
2357                                    shownMarkers.add(user);
2358                                }
2359                            }
2360                        }
2361                        final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2362                        final Message statusMessage;
2363                        final int size = shownMarkers.size();
2364                        if (size > 1) {
2365                            final String body;
2366                            if (size <= 4) {
2367                                body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2368                            } else if (ReadByMarker.allUsersRepresented(allUsers, markersForMessage, markerForSender)) {
2369                                body = getString(R.string.everyone_has_read_up_to_this_point);
2370                            } else {
2371                                body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2372                            }
2373                            statusMessage = Message.createStatusMessage(conversation, body);
2374                            statusMessage.setCounterparts(shownMarkers);
2375                        } else if (size == 1) {
2376                            statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2377                            statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2378                            statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2379                        } else {
2380                            statusMessage = null;
2381                        }
2382                        if (statusMessage != null) {
2383                            this.messageList.add(i + 1, statusMessage);
2384                        }
2385                        addedMarkers.add(markerForSender);
2386                        if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2387                            break;
2388                        }
2389                    }
2390                }
2391                if (users.size() > 0) {
2392                    Message statusMessage;
2393                    if (users.size() == 1) {
2394                        MucOptions.User user = users.get(0);
2395                        int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2396                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2397                        statusMessage.setTrueCounterpart(user.getRealJid());
2398                        statusMessage.setCounterpart(user.getFullJid());
2399                    } else {
2400                        int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2401                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2402                        statusMessage.setCounterparts(users);
2403                    }
2404                    this.messageList.add(statusMessage);
2405                }
2406
2407            }
2408        }
2409    }
2410
2411    private void stopScrolling() {
2412        long now = SystemClock.uptimeMillis();
2413        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2414        binding.messagesView.dispatchTouchEvent(cancel);
2415    }
2416
2417    private boolean showLoadMoreMessages(final Conversation c) {
2418        if (activity == null || activity.xmppConnectionService == null) {
2419            return false;
2420        }
2421        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2422        final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2423        return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2424    }
2425
2426    private boolean hasMamSupport(final Conversation c) {
2427        if (c.getMode() == Conversation.MODE_SINGLE) {
2428            final XmppConnection connection = c.getAccount().getXmppConnection();
2429            return connection != null && connection.getFeatures().mam();
2430        } else {
2431            return c.getMucOptions().mamSupport();
2432        }
2433    }
2434
2435    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2436        showSnackbar(message, action, clickListener, null);
2437    }
2438
2439    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2440        this.binding.snackbar.setVisibility(View.VISIBLE);
2441        this.binding.snackbar.setOnClickListener(null);
2442        this.binding.snackbarMessage.setText(message);
2443        this.binding.snackbarMessage.setOnClickListener(null);
2444        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2445        if (action != 0) {
2446            this.binding.snackbarAction.setText(action);
2447        }
2448        this.binding.snackbarAction.setOnClickListener(clickListener);
2449        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2450    }
2451
2452    protected void hideSnackbar() {
2453        this.binding.snackbar.setVisibility(View.GONE);
2454    }
2455
2456    protected void sendMessage(Message message) {
2457        activity.xmppConnectionService.sendMessage(message);
2458        messageSent();
2459    }
2460
2461    protected void sendPgpMessage(final Message message) {
2462        final XmppConnectionService xmppService = activity.xmppConnectionService;
2463        final Contact contact = message.getConversation().getContact();
2464        if (!activity.hasPgp()) {
2465            activity.showInstallPgpDialog();
2466            return;
2467        }
2468        if (conversation.getAccount().getPgpSignature() == null) {
2469            activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2470            return;
2471        }
2472        if (!mSendingPgpMessage.compareAndSet(false, true)) {
2473            Log.d(Config.LOGTAG, "sending pgp message already in progress");
2474        }
2475        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2476            if (contact.getPgpKeyId() != 0) {
2477                xmppService.getPgpEngine().hasKey(contact,
2478                        new UiCallback<Contact>() {
2479
2480                            @Override
2481                            public void userInputRequried(PendingIntent pi, Contact contact) {
2482                                startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2483                            }
2484
2485                            @Override
2486                            public void success(Contact contact) {
2487                                encryptTextMessage(message);
2488                            }
2489
2490                            @Override
2491                            public void error(int error, Contact contact) {
2492                                activity.runOnUiThread(() -> Toast.makeText(activity,
2493                                        R.string.unable_to_connect_to_keychain,
2494                                        Toast.LENGTH_SHORT
2495                                ).show());
2496                                mSendingPgpMessage.set(false);
2497                            }
2498                        });
2499
2500            } else {
2501                showNoPGPKeyDialog(false, (dialog, which) -> {
2502                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2503                    xmppService.updateConversation(conversation);
2504                    message.setEncryption(Message.ENCRYPTION_NONE);
2505                    xmppService.sendMessage(message);
2506                    messageSent();
2507                });
2508            }
2509        } else {
2510            if (conversation.getMucOptions().pgpKeysInUse()) {
2511                if (!conversation.getMucOptions().everybodyHasKeys()) {
2512                    Toast warning = Toast
2513                            .makeText(getActivity(),
2514                                    R.string.missing_public_keys,
2515                                    Toast.LENGTH_LONG);
2516                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2517                    warning.show();
2518                }
2519                encryptTextMessage(message);
2520            } else {
2521                showNoPGPKeyDialog(true, (dialog, which) -> {
2522                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2523                    message.setEncryption(Message.ENCRYPTION_NONE);
2524                    xmppService.updateConversation(conversation);
2525                    xmppService.sendMessage(message);
2526                    messageSent();
2527                });
2528            }
2529        }
2530    }
2531
2532    public void encryptTextMessage(Message message) {
2533        activity.xmppConnectionService.getPgpEngine().encrypt(message,
2534                new UiCallback<Message>() {
2535
2536                    @Override
2537                    public void userInputRequried(PendingIntent pi, Message message) {
2538                        startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2539                    }
2540
2541                    @Override
2542                    public void success(Message message) {
2543                        //TODO the following two call can be made before the callback
2544                        getActivity().runOnUiThread(() -> messageSent());
2545                    }
2546
2547                    @Override
2548                    public void error(final int error, Message message) {
2549                        getActivity().runOnUiThread(() -> {
2550                            doneSendingPgpMessage();
2551                            Toast.makeText(getActivity(), error == 0 ? R.string.unable_to_connect_to_keychain : error, Toast.LENGTH_SHORT).show();
2552                        });
2553
2554                    }
2555                });
2556    }
2557
2558    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2559        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2560        builder.setIconAttribute(android.R.attr.alertDialogIcon);
2561        if (plural) {
2562            builder.setTitle(getString(R.string.no_pgp_keys));
2563            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2564        } else {
2565            builder.setTitle(getString(R.string.no_pgp_key));
2566            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2567        }
2568        builder.setNegativeButton(getString(R.string.cancel), null);
2569        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2570        builder.create().show();
2571    }
2572
2573    public void appendText(String text, final boolean doNotAppend) {
2574        if (text == null) {
2575            return;
2576        }
2577        final Editable editable = this.binding.textinput.getText();
2578        String previous = editable == null ? "" : editable.toString();
2579        if (doNotAppend && !TextUtils.isEmpty(previous)) {
2580            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG).show();
2581            return;
2582        }
2583        if (UIHelper.isLastLineQuote(previous)) {
2584            text = '\n' + text;
2585        } else if (previous.length() != 0 && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
2586            text = " " + text;
2587        }
2588        this.binding.textinput.append(text);
2589    }
2590
2591    @Override
2592    public boolean onEnterPressed() {
2593        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2594        final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2595        if (enterIsSend) {
2596            sendMessage();
2597            return true;
2598        } else {
2599            return false;
2600        }
2601    }
2602
2603    @Override
2604    public void onTypingStarted() {
2605        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2606        if (service == null) {
2607            return;
2608        }
2609        Account.State status = conversation.getAccount().getStatus();
2610        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2611            service.sendChatState(conversation);
2612        }
2613        updateSendButton();
2614    }
2615
2616    @Override
2617    public void onTypingStopped() {
2618        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2619        if (service == null) {
2620            return;
2621        }
2622        Account.State status = conversation.getAccount().getStatus();
2623        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2624            service.sendChatState(conversation);
2625        }
2626    }
2627
2628    @Override
2629    public void onTextDeleted() {
2630        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2631        if (service == null) {
2632            return;
2633        }
2634        Account.State status = conversation.getAccount().getStatus();
2635        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2636            service.sendChatState(conversation);
2637        }
2638        if (storeNextMessage()) {
2639            activity.onConversationsListItemUpdated();
2640        }
2641        updateSendButton();
2642    }
2643
2644    @Override
2645    public void onTextChanged() {
2646        if (conversation != null && conversation.getCorrectingMessage() != null) {
2647            updateSendButton();
2648        }
2649    }
2650
2651    @Override
2652    public boolean onTabPressed(boolean repeated) {
2653        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2654            return false;
2655        }
2656        if (repeated) {
2657            completionIndex++;
2658        } else {
2659            lastCompletionLength = 0;
2660            completionIndex = 0;
2661            final String content = this.binding.textinput.getText().toString();
2662            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2663            int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2664            firstWord = start == 0;
2665            incomplete = content.substring(start, lastCompletionCursor);
2666        }
2667        List<String> completions = new ArrayList<>();
2668        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2669            String name = user.getName();
2670            if (name != null && name.startsWith(incomplete)) {
2671                completions.add(name + (firstWord ? ": " : " "));
2672            }
2673        }
2674        Collections.sort(completions);
2675        if (completions.size() > completionIndex) {
2676            String completion = completions.get(completionIndex).substring(incomplete.length());
2677            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2678            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2679            lastCompletionLength = completion.length();
2680        } else {
2681            completionIndex = -1;
2682            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2683            lastCompletionLength = 0;
2684        }
2685        return true;
2686    }
2687
2688    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2689        try {
2690            getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2691        } catch (final SendIntentException ignored) {
2692        }
2693    }
2694
2695    @Override
2696    public void onBackendConnected() {
2697        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2698        String uuid = pendingConversationsUuid.pop();
2699        if (uuid != null) {
2700            if (!findAndReInitByUuidOrArchive(uuid)) {
2701                return;
2702            }
2703        } else {
2704            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2705                clearPending();
2706                activity.onConversationArchived(conversation);
2707                return;
2708            }
2709        }
2710        ActivityResult activityResult = postponedActivityResult.pop();
2711        if (activityResult != null) {
2712            handleActivityResult(activityResult);
2713        }
2714        clearPending();
2715    }
2716
2717    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2718        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2719        if (conversation == null) {
2720            clearPending();
2721            activity.onConversationArchived(null);
2722            return false;
2723        }
2724        reInit(conversation);
2725        ScrollState scrollState = pendingScrollState.pop();
2726        String lastMessageUuid = pendingLastMessageUuid.pop();
2727        List<Attachment> attachments = pendingMediaPreviews.pop();
2728        if (scrollState != null) {
2729            setScrollPosition(scrollState, lastMessageUuid);
2730        }
2731        if (attachments != null && attachments.size() > 0) {
2732            Log.d(Config.LOGTAG, "had attachments on restore");
2733            mediaPreviewAdapter.addMediaPreviews(attachments);
2734            toggleInputMethod();
2735        }
2736        return true;
2737    }
2738
2739    private void clearPending() {
2740        if (postponedActivityResult.clear()) {
2741            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2742        }
2743        if (pendingScrollState.clear()) {
2744            Log.e(Config.LOGTAG, "cleared scroll state");
2745        }
2746        if (pendingTakePhotoUri.clear()) {
2747            Log.e(Config.LOGTAG, "cleared pending photo uri");
2748        }
2749    }
2750
2751    public Conversation getConversation() {
2752        return conversation;
2753    }
2754}