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.util.ViewUtil;
 104import eu.siacs.conversations.ui.widget.EditMessage;
 105import eu.siacs.conversations.utils.Compatibility;
 106import eu.siacs.conversations.utils.GeoHelper;
 107import eu.siacs.conversations.utils.MessageUtils;
 108import eu.siacs.conversations.utils.NickValidityChecker;
 109import eu.siacs.conversations.utils.Patterns;
 110import eu.siacs.conversations.utils.QuickLoader;
 111import eu.siacs.conversations.utils.StylingHelper;
 112import eu.siacs.conversations.utils.TimeframeUtils;
 113import eu.siacs.conversations.utils.UIHelper;
 114import eu.siacs.conversations.xmpp.XmppConnection;
 115import eu.siacs.conversations.xmpp.chatstate.ChatState;
 116import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 117import rocks.xmpp.addr.Jid;
 118
 119import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 120import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 121import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
 122import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
 123import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
 124import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
 125
 126
 127public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener, MessageAdapter.OnContactPictureLongClicked, MessageAdapter.OnContactPictureClicked {
 128
 129
 130    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 131    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 132    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 133    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 134    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 135    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 136    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 137    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 138    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 139    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 140    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 141    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 142    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 143    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 144    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 145
 146    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 147    public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 148    public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 149    public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".media_previews";
 150    public static final String STATE_MEDIA_PREVIEWS = ConversationFragment.class.getName() + ".take_photo_uri";
 151    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 152
 153    private final List<Message> messageList = new ArrayList<>();
 154    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 155    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 156    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 157    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 158    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 159    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 160    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 161    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 162    public Uri mPendingEditorContent = null;
 163    protected MessageAdapter messageListAdapter;
 164    private MediaPreviewAdapter mediaPreviewAdapter;
 165    private String lastMessageUuid = null;
 166    private Conversation conversation;
 167    private FragmentConversationBinding binding;
 168    private Toast messageLoaderToast;
 169    private ConversationsActivity activity;
 170    private boolean reInitRequiredOnStart = true;
 171    private OnClickListener clickToMuc = new OnClickListener() {
 172
 173        @Override
 174        public void onClick(View v) {
 175            Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 176            intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 177            intent.putExtra("uuid", conversation.getUuid());
 178            startActivity(intent);
 179        }
 180    };
 181    private OnClickListener leaveMuc = new OnClickListener() {
 182
 183        @Override
 184        public void onClick(View v) {
 185            activity.xmppConnectionService.archiveConversation(conversation);
 186        }
 187    };
 188    private OnClickListener joinMuc = new OnClickListener() {
 189
 190        @Override
 191        public void onClick(View v) {
 192            activity.xmppConnectionService.joinMuc(conversation);
 193        }
 194    };
 195
 196    private OnClickListener acceptJoin = new OnClickListener() {
 197        @Override
 198        public void onClick(View v) {
 199            conversation.setAttribute("accept_non_anonymous",true);
 200            activity.xmppConnectionService.updateConversation(conversation);
 201            activity.xmppConnectionService.joinMuc(conversation);
 202        }
 203    };
 204
 205    private OnClickListener enterPassword = new OnClickListener() {
 206
 207        @Override
 208        public void onClick(View v) {
 209            MucOptions muc = conversation.getMucOptions();
 210            String password = muc.getPassword();
 211            if (password == null) {
 212                password = "";
 213            }
 214            activity.quickPasswordEdit(password, value -> {
 215                activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 216                return null;
 217            });
 218        }
 219    };
 220    private OnScrollListener mOnScrollListener = new OnScrollListener() {
 221
 222        @Override
 223        public void onScrollStateChanged(AbsListView view, int scrollState) {
 224            if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 225                fireReadEvent();
 226            }
 227        }
 228
 229        @Override
 230        public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 231            toggleScrollDownButton(view);
 232            synchronized (ConversationFragment.this.messageList) {
 233                if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 234                    long timestamp;
 235                    if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 236                        timestamp = messageList.get(1).getTimeSent();
 237                    } else {
 238                        timestamp = messageList.get(0).getTimeSent();
 239                    }
 240                    activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 241                        @Override
 242                        public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 243                            if (ConversationFragment.this.conversation != conversation) {
 244                                conversation.messagesLoaded.set(true);
 245                                return;
 246                            }
 247                            runOnUiThread(() -> {
 248                                synchronized (messageList) {
 249                                    final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 250                                    Message message = null;
 251                                    int childPos;
 252                                    for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 253                                        message = messageList.get(oldPosition + childPos);
 254                                        if (message.getType() != Message.TYPE_STATUS) {
 255                                            break;
 256                                        }
 257                                    }
 258                                    final String uuid = message != null ? message.getUuid() : null;
 259                                    View v = binding.messagesView.getChildAt(childPos);
 260                                    final int pxOffset = (v == null) ? 0 : v.getTop();
 261                                    ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 262                                    try {
 263                                        updateStatusMessages();
 264                                    } catch (IllegalStateException e) {
 265                                        Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 266                                    }
 267                                    messageListAdapter.notifyDataSetChanged();
 268                                    int pos = Math.max(getIndexOf(uuid, messageList), 0);
 269                                    binding.messagesView.setSelectionFromTop(pos, pxOffset);
 270                                    if (messageLoaderToast != null) {
 271                                        messageLoaderToast.cancel();
 272                                    }
 273                                    conversation.messagesLoaded.set(true);
 274                                }
 275                            });
 276                        }
 277
 278                        @Override
 279                        public void informUser(final int resId) {
 280
 281                            runOnUiThread(() -> {
 282                                if (messageLoaderToast != null) {
 283                                    messageLoaderToast.cancel();
 284                                }
 285                                if (ConversationFragment.this.conversation != conversation) {
 286                                    return;
 287                                }
 288                                messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 289                                messageLoaderToast.show();
 290                            });
 291
 292                        }
 293                    });
 294
 295                }
 296            }
 297        }
 298    };
 299    private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 300        @Override
 301        public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 302            // try to get permission to read the image, if applicable
 303            if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 304                try {
 305                    inputContentInfo.requestPermission();
 306                } catch (Exception e) {
 307                    Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 308                    Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 309                    ).show();
 310                    return false;
 311                }
 312            }
 313            if (hasPermissions(REQUEST_ADD_EDITOR_CONTENT, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 314                attachEditorContentToConversation(inputContentInfo.getContentUri());
 315            } else {
 316                mPendingEditorContent = inputContentInfo.getContentUri();
 317            }
 318            return true;
 319        }
 320    };
 321    private Message selectedMessage;
 322    private OnClickListener mEnableAccountListener = new OnClickListener() {
 323        @Override
 324        public void onClick(View v) {
 325            final Account account = conversation == null ? null : conversation.getAccount();
 326            if (account != null) {
 327                account.setOption(Account.OPTION_DISABLED, false);
 328                activity.xmppConnectionService.updateAccount(account);
 329            }
 330        }
 331    };
 332    private OnClickListener mUnblockClickListener = new OnClickListener() {
 333        @Override
 334        public void onClick(final View v) {
 335            v.post(() -> v.setVisibility(View.INVISIBLE));
 336            if (conversation.isDomainBlocked()) {
 337                BlockContactDialog.show(activity, conversation);
 338            } else {
 339                unblockConversation(conversation);
 340            }
 341        }
 342    };
 343    private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 344    private OnClickListener mAddBackClickListener = new OnClickListener() {
 345
 346        @Override
 347        public void onClick(View v) {
 348            final Contact contact = conversation == null ? null : conversation.getContact();
 349            if (contact != null) {
 350                activity.xmppConnectionService.createContact(contact, true);
 351                activity.switchToContactDetails(contact);
 352            }
 353        }
 354    };
 355    private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 356    private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 357        @Override
 358        public void onClick(View v) {
 359            final Contact contact = conversation == null ? null : conversation.getContact();
 360            if (contact != null) {
 361                activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 362                        activity.xmppConnectionService.getPresenceGenerator()
 363                                .sendPresenceUpdatesTo(contact));
 364                hideSnackbar();
 365            }
 366        }
 367    };
 368    protected OnClickListener clickToDecryptListener = new OnClickListener() {
 369
 370        @Override
 371        public void onClick(View v) {
 372            PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 373            if (pendingIntent != null) {
 374                try {
 375                    getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 376                            REQUEST_DECRYPT_PGP,
 377                            null,
 378                            0,
 379                            0,
 380                            0);
 381                } catch (SendIntentException e) {
 382                    Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 383                    conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 384                }
 385            }
 386            updateSnackBar(conversation);
 387        }
 388    };
 389    private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 390    private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 391        if (actionId == EditorInfo.IME_ACTION_SEND) {
 392            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 393            if (imm != null && imm.isFullscreenMode()) {
 394                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 395            }
 396            sendMessage();
 397            return true;
 398        } else {
 399            return false;
 400        }
 401    };
 402    private OnClickListener mScrollButtonListener = new OnClickListener() {
 403
 404        @Override
 405        public void onClick(View v) {
 406            stopScrolling();
 407            setSelection(binding.messagesView.getCount() - 1, true);
 408        }
 409    };
 410    private OnClickListener mSendButtonListener = new OnClickListener() {
 411
 412        @Override
 413        public void onClick(View v) {
 414            Object tag = v.getTag();
 415            if (tag instanceof SendButtonAction) {
 416                SendButtonAction action = (SendButtonAction) tag;
 417                switch (action) {
 418                    case TAKE_PHOTO:
 419                    case RECORD_VIDEO:
 420                    case SEND_LOCATION:
 421                    case RECORD_VOICE:
 422                    case CHOOSE_PICTURE:
 423                        attachFile(action.toChoice());
 424                        break;
 425                    case CANCEL:
 426                        if (conversation != null) {
 427                            if (conversation.setCorrectingMessage(null)) {
 428                                binding.textinput.setText("");
 429                                binding.textinput.append(conversation.getDraftMessage());
 430                                conversation.setDraftMessage(null);
 431                            } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 432                                conversation.setNextCounterpart(null);
 433                            }
 434                            updateChatMsgHint();
 435                            updateSendButton();
 436                            updateEditablity();
 437                        }
 438                        break;
 439                    default:
 440                        sendMessage();
 441                }
 442            } else {
 443                sendMessage();
 444            }
 445        }
 446    };
 447    private int completionIndex = 0;
 448    private int lastCompletionLength = 0;
 449    private String incomplete;
 450    private int lastCompletionCursor;
 451    private boolean firstWord = false;
 452    private Message mPendingDownloadableMessage;
 453
 454    private static ConversationFragment findConversationFragment(Activity activity) {
 455        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 456        if (fragment != null && fragment instanceof ConversationFragment) {
 457            return (ConversationFragment) fragment;
 458        }
 459        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 460        if (fragment != null && fragment instanceof ConversationFragment) {
 461            return (ConversationFragment) fragment;
 462        }
 463        return null;
 464    }
 465
 466    public static void startStopPending(Activity activity) {
 467        ConversationFragment fragment = findConversationFragment(activity);
 468        if (fragment != null) {
 469            fragment.messageListAdapter.startStopPending();
 470        }
 471    }
 472
 473    public static void downloadFile(Activity activity, Message message) {
 474        ConversationFragment fragment = findConversationFragment(activity);
 475        if (fragment != null) {
 476            fragment.startDownloadable(message);
 477        }
 478    }
 479
 480    public static void registerPendingMessage(Activity activity, Message message) {
 481        ConversationFragment fragment = findConversationFragment(activity);
 482        if (fragment != null) {
 483            fragment.pendingMessage.push(message);
 484        }
 485    }
 486
 487    public static void openPendingMessage(Activity activity) {
 488        ConversationFragment fragment = findConversationFragment(activity);
 489        if (fragment != null) {
 490            Message message = fragment.pendingMessage.pop();
 491            if (message != null) {
 492                fragment.messageListAdapter.openDownloadable(message);
 493            }
 494        }
 495    }
 496
 497    public static Conversation getConversation(Activity activity) {
 498        return getConversation(activity, R.id.secondary_fragment);
 499    }
 500
 501    private static Conversation getConversation(Activity activity, @IdRes int res) {
 502        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 503        if (fragment != null && fragment instanceof ConversationFragment) {
 504            return ((ConversationFragment) fragment).getConversation();
 505        } else {
 506            return null;
 507        }
 508    }
 509
 510    public static ConversationFragment get(Activity activity) {
 511        FragmentManager fragmentManager = activity.getFragmentManager();
 512        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 513        if (fragment != null && fragment instanceof ConversationFragment) {
 514            return (ConversationFragment) fragment;
 515        } else {
 516            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 517            return fragment != null && fragment instanceof ConversationFragment ? (ConversationFragment) fragment : null;
 518        }
 519    }
 520
 521    public static Conversation getConversationReliable(Activity activity) {
 522        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 523        if (conversation != null) {
 524            return conversation;
 525        }
 526        return getConversation(activity, R.id.main_fragment);
 527    }
 528
 529    private static boolean scrolledToBottom(AbsListView listView) {
 530        final int count = listView.getCount();
 531        if (count == 0) {
 532            return true;
 533        } else if (listView.getLastVisiblePosition() == count - 1) {
 534            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 535            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 536        } else {
 537            return false;
 538        }
 539    }
 540
 541    private void toggleScrollDownButton() {
 542        toggleScrollDownButton(binding.messagesView);
 543    }
 544
 545    private void toggleScrollDownButton(AbsListView listView) {
 546        if (conversation == null) {
 547            return;
 548        }
 549        if (scrolledToBottom(listView)) {
 550            lastMessageUuid = null;
 551            hideUnreadMessagesCount();
 552        } else {
 553            binding.scrollToBottomButton.setEnabled(true);
 554            binding.scrollToBottomButton.show();
 555            if (lastMessageUuid == null) {
 556                lastMessageUuid = conversation.getLatestMessage().getUuid();
 557            }
 558            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 559                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 560            }
 561        }
 562    }
 563
 564    private int getIndexOf(String uuid, List<Message> messages) {
 565        if (uuid == null) {
 566            return messages.size() - 1;
 567        }
 568        for (int i = 0; i < messages.size(); ++i) {
 569            if (uuid.equals(messages.get(i).getUuid())) {
 570                return i;
 571            } else {
 572                Message next = messages.get(i);
 573                while (next != null && next.wasMergedIntoPrevious()) {
 574                    if (uuid.equals(next.getUuid())) {
 575                        return i;
 576                    }
 577                    next = next.next();
 578                }
 579
 580            }
 581        }
 582        return -1;
 583    }
 584
 585    private ScrollState getScrollPosition() {
 586        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 587        if (listView == null || listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 588            return null;
 589        } else {
 590            final int pos = listView.getFirstVisiblePosition();
 591            final View view = listView.getChildAt(0);
 592            if (view == null) {
 593                return null;
 594            } else {
 595                return new ScrollState(pos, view.getTop());
 596            }
 597        }
 598    }
 599
 600    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 601        if (scrollPosition != null) {
 602
 603            this.lastMessageUuid = lastMessageUuid;
 604            if (lastMessageUuid != null) {
 605                binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 606            }
 607            //TODO maybe this needs a 'post'
 608            this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 609            toggleScrollDownButton();
 610        }
 611    }
 612
 613    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 614        if (conversation == null) {
 615            return;
 616        }
 617        activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 618
 619            @Override
 620            public void success(Message message) {
 621
 622            }
 623
 624            @Override
 625            public void error(int errorCode, Message object) {
 626                //TODO show possible pgp error
 627            }
 628
 629            @Override
 630            public void userInputRequried(PendingIntent pi, Message object) {
 631
 632            }
 633        });
 634    }
 635
 636    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 637        if (conversation == null) {
 638            return;
 639        }
 640        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 641        prepareFileToast.show();
 642        activity.delegateUriPermissionsToService(uri);
 643        activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 644            @Override
 645            public void inform(final String text) {
 646                hidePrepareFileToast(prepareFileToast);
 647                runOnUiThread(() -> activity.replaceToast(text));
 648            }
 649
 650            @Override
 651            public void success(Message message) {
 652                runOnUiThread(() -> activity.hideToast());
 653                hidePrepareFileToast(prepareFileToast);
 654            }
 655
 656            @Override
 657            public void error(final int errorCode, Message message) {
 658                hidePrepareFileToast(prepareFileToast);
 659                runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 660
 661            }
 662
 663            @Override
 664            public void userInputRequried(PendingIntent pi, Message message) {
 665                hidePrepareFileToast(prepareFileToast);
 666            }
 667        });
 668    }
 669
 670    public void attachEditorContentToConversation(Uri uri) {
 671        mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 672        toggleInputMethod();
 673    }
 674
 675    private void attachImageToConversation(Conversation conversation, Uri uri) {
 676        if (conversation == null) {
 677            return;
 678        }
 679        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 680        prepareFileToast.show();
 681        activity.delegateUriPermissionsToService(uri);
 682        activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 683                new UiCallback<Message>() {
 684
 685                    @Override
 686                    public void userInputRequried(PendingIntent pi, Message object) {
 687                        hidePrepareFileToast(prepareFileToast);
 688                    }
 689
 690                    @Override
 691                    public void success(Message message) {
 692                        hidePrepareFileToast(prepareFileToast);
 693                    }
 694
 695                    @Override
 696                    public void error(final int error, Message message) {
 697                        hidePrepareFileToast(prepareFileToast);
 698                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 699                    }
 700                });
 701    }
 702
 703    private void hidePrepareFileToast(final Toast prepareFileToast) {
 704        if (prepareFileToast != null && activity != null) {
 705            activity.runOnUiThread(prepareFileToast::cancel);
 706        }
 707    }
 708
 709    private void sendMessage() {
 710        if (mediaPreviewAdapter.hasAttachments()) {
 711            commitAttachments();
 712            return;
 713        }
 714        final Editable text = this.binding.textinput.getText();
 715        final String body = text == null ? "" : text.toString();
 716        final Conversation conversation = this.conversation;
 717        if (body.length() == 0 || conversation == null) {
 718            return;
 719        }
 720        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 721            return;
 722        }
 723        final Message message;
 724        if (conversation.getCorrectingMessage() == null) {
 725            message = new Message(conversation, body, conversation.getNextEncryption());
 726            if (conversation.getMode() == Conversation.MODE_MULTI) {
 727                final Jid nextCounterpart = conversation.getNextCounterpart();
 728                if (nextCounterpart != null) {
 729                    message.setCounterpart(nextCounterpart);
 730                    message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 731                    message.setType(Message.TYPE_PRIVATE);
 732                }
 733            }
 734        } else {
 735            message = conversation.getCorrectingMessage();
 736            message.setBody(body);
 737            message.putEdited(message.getUuid(), message.getServerMsgId());
 738            message.setServerMsgId(null);
 739            message.setUuid(UUID.randomUUID().toString());
 740        }
 741        switch (conversation.getNextEncryption()) {
 742            case Message.ENCRYPTION_PGP:
 743                sendPgpMessage(message);
 744                break;
 745            default:
 746                sendMessage(message);
 747        }
 748    }
 749
 750    protected boolean trustKeysIfNeeded(int requestCode) {
 751        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 752        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 753        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 754        boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 755        boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 756        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 757        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 758        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 759        if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted || downloadInProgress) {
 760            axolotlService.createSessionsIfNeeded(conversation);
 761            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 762            String[] contacts = new String[targets.size()];
 763            for (int i = 0; i < contacts.length; ++i) {
 764                contacts[i] = targets.get(i).toString();
 765            }
 766            intent.putExtra("contacts", contacts);
 767            intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 768            intent.putExtra("conversation", conversation.getUuid());
 769            startActivityForResult(intent, requestCode);
 770            return true;
 771        } else {
 772            return false;
 773        }
 774    }
 775
 776    public void updateChatMsgHint() {
 777        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 778        if (conversation.getCorrectingMessage() != null) {
 779            this.binding.textinput.setHint(R.string.send_corrected_message);
 780        } else if (multi && conversation.getNextCounterpart() != null) {
 781            this.binding.textinput.setHint(getString(
 782                    R.string.send_private_message_to,
 783                    conversation.getNextCounterpart().getResource()));
 784        } else if (multi && !conversation.getMucOptions().participating()) {
 785            this.binding.textinput.setHint(R.string.you_are_not_participating);
 786        } else {
 787            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 788            getActivity().invalidateOptionsMenu();
 789        }
 790    }
 791
 792    public void setupIme() {
 793        this.binding.textinput.refreshIme();
 794    }
 795
 796    private void handleActivityResult(ActivityResult activityResult) {
 797        if (activityResult.resultCode == Activity.RESULT_OK) {
 798            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 799        } else {
 800            handleNegativeActivityResult(activityResult.requestCode);
 801        }
 802    }
 803
 804    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 805        switch (requestCode) {
 806            case REQUEST_TRUST_KEYS_TEXT:
 807                sendMessage();
 808                break;
 809            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 810                commitAttachments();
 811                break;
 812            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 813                final List<Attachment> imageUris = Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 814                mediaPreviewAdapter.addMediaPreviews(imageUris);
 815                toggleInputMethod();
 816                break;
 817            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 818                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 819                if (takePhotoUri != null) {
 820                    mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 821                    toggleInputMethod();
 822                } else {
 823                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 824                }
 825                break;
 826            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 827            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 828            case ATTACHMENT_CHOICE_RECORD_VOICE:
 829                final Attachment.Type type = requestCode == ATTACHMENT_CHOICE_RECORD_VOICE ? Attachment.Type.RECORDING : Attachment.Type.FILE;
 830                final List<Attachment> fileUris = Attachment.extractAttachments(getActivity(), data, type);
 831                mediaPreviewAdapter.addMediaPreviews(fileUris);
 832                toggleInputMethod();
 833                break;
 834            case ATTACHMENT_CHOICE_LOCATION:
 835                double latitude = data.getDoubleExtra("latitude", 0);
 836                double longitude = data.getDoubleExtra("longitude", 0);
 837                Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 838                mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
 839                toggleInputMethod();
 840                break;
 841            case REQUEST_INVITE_TO_CONVERSATION:
 842                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 843                if (invite != null) {
 844                    if (invite.execute(activity)) {
 845                        activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 846                        activity.mToast.show();
 847                    }
 848                }
 849                break;
 850        }
 851    }
 852
 853    private void commitAttachments() {
 854        if (!hasPermissions(REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 855            return;
 856        }
 857        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_ATTACHMENTS)) {
 858            return;
 859        }
 860        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
 861        final PresenceSelector.OnPresenceSelected callback = () -> {
 862            for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
 863                final Attachment attachment = i.next();
 864                if (attachment.getType() == Attachment.Type.LOCATION) {
 865                    attachLocationToConversation(conversation, attachment.getUri());
 866                } else if (attachment.getType() == Attachment.Type.IMAGE) {
 867                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
 868                    attachImageToConversation(conversation, attachment.getUri());
 869                } else {
 870                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 871                    attachFileToConversation(conversation, attachment.getUri(), attachment.getMime());
 872                }
 873            }
 874            mediaPreviewAdapter.notifyDataSetChanged();
 875            toggleInputMethod();
 876        };
 877        if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), attachments, getMaxHttpUploadSize(conversation))) {
 878            callback.onPresenceSelected();
 879        } else {
 880            activity.selectPresence(conversation, callback);
 881        }
 882    }
 883
 884    public void toggleInputMethod() {
 885        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
 886        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
 887        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
 888        updateSendButton();
 889    }
 890
 891    private void handleNegativeActivityResult(int requestCode) {
 892        switch (requestCode) {
 893            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 894                if (pendingTakePhotoUri.clear()) {
 895                    Log.d(Config.LOGTAG, "cleared pending photo uri after negative activity result");
 896                }
 897                break;
 898        }
 899    }
 900
 901    @Override
 902    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 903        super.onActivityResult(requestCode, resultCode, data);
 904        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 905        if (activity != null && activity.xmppConnectionService != null) {
 906            handleActivityResult(activityResult);
 907        } else {
 908            this.postponedActivityResult.push(activityResult);
 909        }
 910    }
 911
 912    public void unblockConversation(final Blockable conversation) {
 913        activity.xmppConnectionService.sendUnblockRequest(conversation);
 914    }
 915
 916    @Override
 917    public void onAttach(Activity activity) {
 918        super.onAttach(activity);
 919        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 920        if (activity instanceof ConversationsActivity) {
 921            this.activity = (ConversationsActivity) activity;
 922        } else {
 923            throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 924        }
 925    }
 926
 927    @Override
 928    public void onDetach() {
 929        super.onDetach();
 930        this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 931    }
 932
 933    @Override
 934    public void onCreate(Bundle savedInstanceState) {
 935        super.onCreate(savedInstanceState);
 936        setHasOptionsMenu(true);
 937    }
 938
 939    @Override
 940    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 941        menuInflater.inflate(R.menu.fragment_conversation, menu);
 942        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 943        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 944        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 945        final MenuItem menuMute = menu.findItem(R.id.action_mute);
 946        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 947
 948
 949        if (conversation != null) {
 950            if (conversation.getMode() == Conversation.MODE_MULTI) {
 951                menuContactDetails.setVisible(false);
 952                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 953            } else {
 954                menuContactDetails.setVisible(!this.conversation.withSelf());
 955                menuMucDetails.setVisible(false);
 956                final XmppConnectionService service = activity.xmppConnectionService;
 957                menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 958            }
 959            if (conversation.isMuted()) {
 960                menuMute.setVisible(false);
 961            } else {
 962                menuUnmute.setVisible(false);
 963            }
 964            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 965            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 966        }
 967        super.onCreateOptionsMenu(menu, menuInflater);
 968    }
 969
 970    @Override
 971    public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 972        this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 973        binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 974
 975        binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 976
 977        binding.textinput.setOnEditorActionListener(mEditorActionListener);
 978        binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 979
 980        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 981
 982        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 983        binding.messagesView.setOnScrollListener(mOnScrollListener);
 984        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 985        mediaPreviewAdapter = new MediaPreviewAdapter(this);
 986        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
 987        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 988        messageListAdapter.setOnContactPictureClicked(this);
 989        messageListAdapter.setOnContactPictureLongClicked(this);
 990        messageListAdapter.setOnQuoteListener(this::quoteText);
 991        binding.messagesView.setAdapter(messageListAdapter);
 992
 993        registerForContextMenu(binding.messagesView);
 994
 995        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 996            this.binding.textinput.setCustomInsertionActionModeCallback(new EditMessageActionModeCallback(this.binding.textinput));
 997        }
 998
 999        return binding.getRoot();
1000    }
1001
1002    private void quoteText(String text) {
1003        if (binding.textinput.isEnabled()) {
1004            binding.textinput.insertAsQuote(text);
1005            binding.textinput.requestFocus();
1006            InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1007            if (inputMethodManager != null) {
1008                inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1009            }
1010        }
1011    }
1012
1013    private void quoteMessage(Message message) {
1014        quoteText(MessageUtils.prepareQuote(message));
1015    }
1016
1017    @Override
1018    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1019        synchronized (this.messageList) {
1020            super.onCreateContextMenu(menu, v, menuInfo);
1021            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1022            this.selectedMessage = this.messageList.get(acmi.position);
1023            populateContextMenu(menu);
1024        }
1025    }
1026
1027    private void populateContextMenu(ContextMenu menu) {
1028        final Message m = this.selectedMessage;
1029        final Transferable t = m.getTransferable();
1030        Message relevantForCorrection = m;
1031        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1032            relevantForCorrection = relevantForCorrection.next();
1033        }
1034        if (m.getType() != Message.TYPE_STATUS) {
1035
1036            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1037                return;
1038            }
1039
1040            final boolean deleted = m.isDeleted();
1041            final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1042                    || m.getEncryption() == Message.ENCRYPTION_PGP;
1043            final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1044            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1045            menu.setHeaderTitle(R.string.message_options);
1046            MenuItem openWith = menu.findItem(R.id.open_with);
1047            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1048            MenuItem copyLink = menu.findItem(R.id.copy_link);
1049            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1050            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1051            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1052            MenuItem shareWith = menu.findItem(R.id.share_with);
1053            MenuItem sendAgain = menu.findItem(R.id.send_again);
1054            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1055            MenuItem downloadFile = menu.findItem(R.id.download_file);
1056            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1057            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1058            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1059            final boolean showError = m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1060            if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1061                copyMessage.setVisible(true);
1062                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1063                String body = m.getMergedBody().toString();
1064                if (ShareUtil.containsXmppUri(body)) {
1065                    copyLink.setTitle(R.string.copy_jabber_id);
1066                    copyLink.setVisible(true);
1067                } else if (Patterns.AUTOLINK_WEB_URL.matcher(body).find()) {
1068                    copyLink.setVisible(true);
1069                }
1070            }
1071            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1072                retryDecryption.setVisible(true);
1073            }
1074            if (!showError
1075                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1076                    && !m.isGeoUri()
1077                    && relevantForCorrection.isLastCorrectableMessage()
1078                    && m.getConversation() instanceof Conversation
1079                    && (((Conversation) m.getConversation()).getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1080                correctMessage.setVisible(true);
1081            }
1082            if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1083                shareWith.setVisible(true);
1084            }
1085            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1086                sendAgain.setVisible(true);
1087            }
1088            if (m.hasFileOnRemoteHost()
1089                    || m.isGeoUri()
1090                    || m.treatAsDownloadable()
1091                    || t instanceof HttpDownloadConnection) {
1092                copyUrl.setVisible(true);
1093            }
1094            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1095                downloadFile.setVisible(true);
1096                downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1097            }
1098            final boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1099                    || m.getStatus() == Message.STATUS_UNSEND
1100                    || m.getStatus() == Message.STATUS_OFFERED;
1101            final boolean cancelable = (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1102            if (cancelable) {
1103                cancelTransmission.setVisible(true);
1104            }
1105            if (m.isFileOrImage() && !deleted && !cancelable) {
1106                String path = m.getRelativeFilePath();
1107                if (path == null || !path.startsWith("/") || FileBackend.isInDirectoryThatShouldNotBeScanned(getActivity(), path)) {
1108                    deleteFile.setVisible(true);
1109                    deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1110                }
1111            }
1112            if (showError) {
1113                showErrorMessage.setVisible(true);
1114            }
1115            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1116            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(),m)) || (mime != null && mime.startsWith("audio/"))) {
1117                openWith.setVisible(true);
1118            }
1119        }
1120    }
1121
1122    @Override
1123    public boolean onContextItemSelected(MenuItem item) {
1124        switch (item.getItemId()) {
1125            case R.id.share_with:
1126                ShareUtil.share(activity, selectedMessage);
1127                return true;
1128            case R.id.correct_message:
1129                correctMessage(selectedMessage);
1130                return true;
1131            case R.id.copy_message:
1132                ShareUtil.copyToClipboard(activity, selectedMessage);
1133                return true;
1134            case R.id.copy_link:
1135                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1136                return true;
1137            case R.id.quote_message:
1138                quoteMessage(selectedMessage);
1139                return true;
1140            case R.id.send_again:
1141                resendMessage(selectedMessage);
1142                return true;
1143            case R.id.copy_url:
1144                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1145                return true;
1146            case R.id.download_file:
1147                startDownloadable(selectedMessage);
1148                return true;
1149            case R.id.cancel_transmission:
1150                cancelTransmission(selectedMessage);
1151                return true;
1152            case R.id.retry_decryption:
1153                retryDecryption(selectedMessage);
1154                return true;
1155            case R.id.delete_file:
1156                deleteFile(selectedMessage);
1157                return true;
1158            case R.id.show_error_message:
1159                showErrorMessage(selectedMessage);
1160                return true;
1161            case R.id.open_with:
1162                openWith(selectedMessage);
1163                return true;
1164            default:
1165                return super.onContextItemSelected(item);
1166        }
1167    }
1168
1169    @Override
1170    public boolean onOptionsItemSelected(final MenuItem item) {
1171        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1172            return false;
1173        } else if (conversation == null) {
1174            return super.onOptionsItemSelected(item);
1175        }
1176        switch (item.getItemId()) {
1177            case R.id.encryption_choice_axolotl:
1178            case R.id.encryption_choice_pgp:
1179            case R.id.encryption_choice_none:
1180                handleEncryptionSelection(item);
1181                break;
1182            case R.id.attach_choose_picture:
1183            case R.id.attach_take_picture:
1184            case R.id.attach_record_video:
1185            case R.id.attach_choose_file:
1186            case R.id.attach_record_voice:
1187            case R.id.attach_location:
1188                handleAttachmentSelection(item);
1189                break;
1190            case R.id.action_archive:
1191                activity.xmppConnectionService.archiveConversation(conversation);
1192                break;
1193            case R.id.action_contact_details:
1194                activity.switchToContactDetails(conversation.getContact());
1195                break;
1196            case R.id.action_muc_details:
1197                Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1198                intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1199                intent.putExtra("uuid", conversation.getUuid());
1200                startActivity(intent);
1201                break;
1202            case R.id.action_invite:
1203                startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1204                break;
1205            case R.id.action_clear_history:
1206                clearHistoryDialog(conversation);
1207                break;
1208            case R.id.action_mute:
1209                muteConversationDialog(conversation);
1210                break;
1211            case R.id.action_unmute:
1212                unmuteConversation(conversation);
1213                break;
1214            case R.id.action_block:
1215            case R.id.action_unblock:
1216                final Activity activity = getActivity();
1217                if (activity instanceof XmppActivity) {
1218                    BlockContactDialog.show((XmppActivity) activity, conversation);
1219                }
1220                break;
1221            default:
1222                break;
1223        }
1224        return super.onOptionsItemSelected(item);
1225    }
1226
1227    private void handleAttachmentSelection(MenuItem item) {
1228        switch (item.getItemId()) {
1229            case R.id.attach_choose_picture:
1230                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1231                break;
1232            case R.id.attach_take_picture:
1233                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1234                break;
1235            case R.id.attach_record_video:
1236                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1237                break;
1238            case R.id.attach_choose_file:
1239                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1240                break;
1241            case R.id.attach_record_voice:
1242                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1243                break;
1244            case R.id.attach_location:
1245                attachFile(ATTACHMENT_CHOICE_LOCATION);
1246                break;
1247        }
1248    }
1249
1250    private void handleEncryptionSelection(MenuItem item) {
1251        if (conversation == null) {
1252            return;
1253        }
1254        switch (item.getItemId()) {
1255            case R.id.encryption_choice_none:
1256                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1257                item.setChecked(true);
1258                break;
1259            case R.id.encryption_choice_pgp:
1260                if (activity.hasPgp()) {
1261                    if (conversation.getAccount().getPgpSignature() != null) {
1262                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1263                        item.setChecked(true);
1264                    } else {
1265                        activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1266                    }
1267                } else {
1268                    activity.showInstallPgpDialog();
1269                }
1270                break;
1271            case R.id.encryption_choice_axolotl:
1272                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1273                        + "Enabled axolotl for Contact " + conversation.getContact().getJid());
1274                conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1275                item.setChecked(true);
1276                break;
1277            default:
1278                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1279                break;
1280        }
1281        activity.xmppConnectionService.updateConversation(conversation);
1282        updateChatMsgHint();
1283        getActivity().invalidateOptionsMenu();
1284        activity.refreshUi();
1285    }
1286
1287    public void attachFile(final int attachmentChoice) {
1288        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1289            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO)) {
1290                return;
1291            }
1292        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1293            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)) {
1294                return;
1295            }
1296        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1297            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1298                return;
1299            }
1300        }
1301        try {
1302            activity.getPreferences().edit()
1303                    .putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1304                    .apply();
1305        } catch (IllegalArgumentException e) {
1306            //just do not save
1307        }
1308        final int encryption = conversation.getNextEncryption();
1309        final int mode = conversation.getMode();
1310        if (encryption == Message.ENCRYPTION_PGP) {
1311            if (activity.hasPgp()) {
1312                if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1313                    activity.xmppConnectionService.getPgpEngine().hasKey(
1314                            conversation.getContact(),
1315                            new UiCallback<Contact>() {
1316
1317                                @Override
1318                                public void userInputRequried(PendingIntent pi, Contact contact) {
1319                                    startPendingIntent(pi, attachmentChoice);
1320                                }
1321
1322                                @Override
1323                                public void success(Contact contact) {
1324                                    selectPresenceToAttachFile(attachmentChoice);
1325                                }
1326
1327                                @Override
1328                                public void error(int error, Contact contact) {
1329                                    activity.replaceToast(getString(error));
1330                                }
1331                            });
1332                } else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1333                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1334                        Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1335                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1336                        warning.show();
1337                    }
1338                    selectPresenceToAttachFile(attachmentChoice);
1339                } else {
1340                    showNoPGPKeyDialog(false, (dialog, which) -> {
1341                        conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1342                        activity.xmppConnectionService.updateConversation(conversation);
1343                        selectPresenceToAttachFile(attachmentChoice);
1344                    });
1345                }
1346            } else {
1347                activity.showInstallPgpDialog();
1348            }
1349        } else {
1350            selectPresenceToAttachFile(attachmentChoice);
1351        }
1352    }
1353
1354    @Override
1355    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1356        if (grantResults.length > 0) {
1357            if (allGranted(grantResults)) {
1358                switch (requestCode) {
1359                    case REQUEST_START_DOWNLOAD:
1360                        if (this.mPendingDownloadableMessage != null) {
1361                            startDownloadable(this.mPendingDownloadableMessage);
1362                        }
1363                        break;
1364                    case REQUEST_ADD_EDITOR_CONTENT:
1365                        if (this.mPendingEditorContent != null) {
1366                            attachEditorContentToConversation(this.mPendingEditorContent);
1367                        }
1368                        break;
1369                    case REQUEST_COMMIT_ATTACHMENTS:
1370                        commitAttachments();
1371                        break;
1372                    default:
1373                        attachFile(requestCode);
1374                        break;
1375                }
1376            } else {
1377                @StringRes int res;
1378                String firstDenied = getFirstDenied(grantResults, permissions);
1379                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1380                    res = R.string.no_microphone_permission;
1381                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1382                    res = R.string.no_camera_permission;
1383                } else {
1384                    res = R.string.no_storage_permission;
1385                }
1386                Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1387            }
1388        }
1389        if (writeGranted(grantResults, permissions)) {
1390            if (activity != null && activity.xmppConnectionService != null) {
1391                activity.xmppConnectionService.restartFileObserver();
1392            }
1393            refresh();
1394        }
1395    }
1396
1397    public void startDownloadable(Message message) {
1398        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1399            this.mPendingDownloadableMessage = message;
1400            return;
1401        }
1402        Transferable transferable = message.getTransferable();
1403        if (transferable != null) {
1404            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1405                createNewConnection(message);
1406                return;
1407            }
1408            if (!transferable.start()) {
1409                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1410                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1411            }
1412        } else if (message.treatAsDownloadable() || message.hasFileOnRemoteHost()) {
1413            createNewConnection(message);
1414        }
1415    }
1416
1417    private void createNewConnection(final Message message) {
1418        if (!activity.xmppConnectionService.getHttpConnectionManager().checkConnection(message)) {
1419            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1420            return;
1421        }
1422        activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1423    }
1424
1425    @SuppressLint("InflateParams")
1426    protected void clearHistoryDialog(final Conversation conversation) {
1427        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1428        builder.setTitle(getString(R.string.clear_conversation_history));
1429        final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1430        final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1431        builder.setView(dialogView);
1432        builder.setNegativeButton(getString(R.string.cancel), null);
1433        builder.setPositiveButton(getString(R.string.confirm), (dialog, which) -> {
1434            this.activity.xmppConnectionService.clearConversationHistory(conversation);
1435            if (endConversationCheckBox.isChecked()) {
1436                this.activity.xmppConnectionService.archiveConversation(conversation);
1437                this.activity.onConversationArchived(conversation);
1438            } else {
1439                activity.onConversationsListItemUpdated();
1440                refresh();
1441            }
1442        });
1443        builder.create().show();
1444    }
1445
1446    protected void muteConversationDialog(final Conversation conversation) {
1447        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1448        builder.setTitle(R.string.disable_notifications);
1449        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1450        final CharSequence[] labels = new CharSequence[durations.length];
1451        for (int i = 0; i < durations.length; ++i) {
1452            if (durations[i] == -1) {
1453                labels[i] = getString(R.string.until_further_notice);
1454            } else {
1455                labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1456            }
1457        }
1458        builder.setItems(labels, (dialog, which) -> {
1459            final long till;
1460            if (durations[which] == -1) {
1461                till = Long.MAX_VALUE;
1462            } else {
1463                till = System.currentTimeMillis() + (durations[which] * 1000);
1464            }
1465            conversation.setMutedTill(till);
1466            activity.xmppConnectionService.updateConversation(conversation);
1467            activity.onConversationsListItemUpdated();
1468            refresh();
1469            getActivity().invalidateOptionsMenu();
1470        });
1471        builder.create().show();
1472    }
1473
1474    private boolean hasPermissions(int requestCode, String... permissions) {
1475        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1476            final List<String> missingPermissions = new ArrayList<>();
1477            for (String permission : permissions) {
1478                if (Config.ONLY_INTERNAL_STORAGE && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1479                    continue;
1480                }
1481                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1482                    missingPermissions.add(permission);
1483                }
1484            }
1485            if (missingPermissions.size() == 0) {
1486                return true;
1487            } else {
1488                requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1489                return false;
1490            }
1491        } else {
1492            return true;
1493        }
1494    }
1495
1496    public void unmuteConversation(final Conversation conversation) {
1497        conversation.setMutedTill(0);
1498        this.activity.xmppConnectionService.updateConversation(conversation);
1499        this.activity.onConversationsListItemUpdated();
1500        refresh();
1501        getActivity().invalidateOptionsMenu();
1502    }
1503
1504    protected void selectPresenceToAttachFile(final int attachmentChoice) {
1505        final Account account = conversation.getAccount();
1506        final PresenceSelector.OnPresenceSelected callback = () -> {
1507            Intent intent = new Intent();
1508            boolean chooser = false;
1509            switch (attachmentChoice) {
1510                case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1511                    intent.setAction(Intent.ACTION_GET_CONTENT);
1512                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
1513                        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1514                    }
1515                    intent.setType("image/*");
1516                    chooser = true;
1517                    break;
1518                case ATTACHMENT_CHOICE_RECORD_VIDEO:
1519                    intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1520                    break;
1521                case ATTACHMENT_CHOICE_TAKE_PHOTO:
1522                    final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1523                    pendingTakePhotoUri.push(uri);
1524                    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1525                    intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1526                    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1527                    intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1528                    break;
1529                case ATTACHMENT_CHOICE_CHOOSE_FILE:
1530                    chooser = true;
1531                    intent.setType("*/*");
1532                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
1533                        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1534                    }
1535                    intent.addCategory(Intent.CATEGORY_OPENABLE);
1536                    intent.setAction(Intent.ACTION_GET_CONTENT);
1537                    break;
1538                case ATTACHMENT_CHOICE_RECORD_VOICE:
1539                    intent = new Intent(getActivity(), RecordingActivity.class);
1540                    break;
1541                case ATTACHMENT_CHOICE_LOCATION:
1542                    intent = GeoHelper.getFetchIntent(activity);
1543                    break;
1544            }
1545            if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1546                if (chooser) {
1547                    startActivityForResult(
1548                            Intent.createChooser(intent, getString(R.string.perform_action_with)),
1549                            attachmentChoice);
1550                } else {
1551                    startActivityForResult(intent, attachmentChoice);
1552                }
1553            }
1554        };
1555        if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1556            conversation.setNextCounterpart(null);
1557            callback.onPresenceSelected();
1558        } else {
1559            activity.selectPresence(conversation, callback);
1560        }
1561    }
1562
1563    @Override
1564    public void onResume() {
1565        super.onResume();
1566        binding.messagesView.post(this::fireReadEvent);
1567    }
1568
1569    private void fireReadEvent() {
1570        if (activity != null && this.conversation != null) {
1571            String uuid = getLastVisibleMessageUuid();
1572            if (uuid != null) {
1573                activity.onConversationRead(this.conversation, uuid);
1574            }
1575        }
1576    }
1577
1578    private String getLastVisibleMessageUuid() {
1579        if (binding == null) {
1580            return null;
1581        }
1582        synchronized (this.messageList) {
1583            int pos = binding.messagesView.getLastVisiblePosition();
1584            if (pos >= 0) {
1585                Message message = null;
1586                for (int i = pos; i >= 0; --i) {
1587                    try {
1588                        message = (Message) binding.messagesView.getItemAtPosition(i);
1589                    } catch (IndexOutOfBoundsException e) {
1590                        //should not happen if we synchronize properly. however if that fails we just gonna try item -1
1591                        continue;
1592                    }
1593                    if (message.getType() != Message.TYPE_STATUS) {
1594                        break;
1595                    }
1596                }
1597                if (message != null) {
1598                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1599                        message = message.next();
1600                    }
1601                    return message.getUuid();
1602                }
1603            }
1604        }
1605        return null;
1606    }
1607
1608    private void openWith(final Message message) {
1609        if (message.isGeoUri()) {
1610            GeoHelper.view(getActivity(),message);
1611        } else {
1612            final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1613            ViewUtil.view(activity, file);
1614        }
1615    }
1616
1617    private void showErrorMessage(final Message message) {
1618        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1619        builder.setTitle(R.string.error_message);
1620        builder.setMessage(message.getErrorMessage());
1621        builder.setNegativeButton(R.string.copy_to_clipboard, (dialog, which) -> {
1622            activity.copyTextToClipboard(message.getErrorMessage(),R.string.error_message);
1623            Toast.makeText(activity,R.string.error_message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1624        });
1625        builder.setPositiveButton(R.string.confirm, null);
1626        builder.create().show();
1627    }
1628
1629
1630    private void deleteFile(final Message message) {
1631        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1632        builder.setNegativeButton(R.string.cancel, null);
1633        builder.setTitle(R.string.delete_file_dialog);
1634        builder.setMessage(R.string.delete_file_dialog_msg);
1635        builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
1636            if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1637                message.setDeleted(true);
1638                activity.xmppConnectionService.updateMessage(message, false);
1639                activity.onConversationsListItemUpdated();
1640                refresh();
1641            }
1642        });
1643        builder.create().show();
1644
1645    }
1646
1647    private void resendMessage(final Message message) {
1648        if (message.isFileOrImage()) {
1649            if (!(message.getConversation() instanceof Conversation)) {
1650                return;
1651            }
1652            final Conversation conversation = (Conversation) message.getConversation();
1653            final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1654            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
1655                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1656                if (!message.hasFileOnRemoteHost()
1657                        && xmppConnection != null
1658                        && conversation.getMode() == Conversational.MODE_SINGLE
1659                        && !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1660                    activity.selectPresence(conversation, () -> {
1661                        message.setCounterpart(conversation.getNextCounterpart());
1662                        activity.xmppConnectionService.resendFailedMessages(message);
1663                        new Handler().post(() -> {
1664                            int size = messageList.size();
1665                            this.binding.messagesView.setSelection(size - 1);
1666                        });
1667                    });
1668                    return;
1669                }
1670            } else if (!Compatibility.hasStoragePermission(getActivity())) {
1671                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
1672                return;
1673            } else {
1674                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1675                message.setDeleted(true);
1676                activity.xmppConnectionService.updateMessage(message, false);
1677                activity.onConversationsListItemUpdated();
1678                refresh();
1679                return;
1680            }
1681        }
1682        activity.xmppConnectionService.resendFailedMessages(message);
1683        new Handler().post(() -> {
1684            int size = messageList.size();
1685            this.binding.messagesView.setSelection(size - 1);
1686        });
1687    }
1688
1689    private void cancelTransmission(Message message) {
1690        Transferable transferable = message.getTransferable();
1691        if (transferable != null) {
1692            transferable.cancel();
1693        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
1694            activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
1695        }
1696    }
1697
1698    private void retryDecryption(Message message) {
1699        message.setEncryption(Message.ENCRYPTION_PGP);
1700        activity.onConversationsListItemUpdated();
1701        refresh();
1702        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1703    }
1704
1705    public void privateMessageWith(final Jid counterpart) {
1706        if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1707            activity.xmppConnectionService.sendChatState(conversation);
1708        }
1709        this.binding.textinput.setText("");
1710        this.conversation.setNextCounterpart(counterpart);
1711        updateChatMsgHint();
1712        updateSendButton();
1713        updateEditablity();
1714    }
1715
1716    private void correctMessage(Message message) {
1717        while (message.mergeable(message.next())) {
1718            message = message.next();
1719        }
1720        this.conversation.setCorrectingMessage(message);
1721        final Editable editable = binding.textinput.getText();
1722        this.conversation.setDraftMessage(editable.toString());
1723        this.binding.textinput.setText("");
1724        this.binding.textinput.append(message.getBody());
1725
1726    }
1727
1728    private void highlightInConference(String nick) {
1729        final Editable editable = this.binding.textinput.getText();
1730        String oldString = editable.toString().trim();
1731        final int pos = this.binding.textinput.getSelectionStart();
1732        if (oldString.isEmpty() || pos == 0) {
1733            editable.insert(0, nick + ": ");
1734        } else {
1735            final char before = editable.charAt(pos - 1);
1736            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1737            if (before == '\n') {
1738                editable.insert(pos, nick + ": ");
1739            } else {
1740                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1741                    if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1742                        editable.insert(pos - 2, ", " + nick);
1743                        return;
1744                    }
1745                }
1746                editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1747                if (Character.isWhitespace(after)) {
1748                    this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1749                }
1750            }
1751        }
1752    }
1753
1754    @Override
1755    public void startActivityForResult(Intent intent, int requestCode) {
1756        final Activity activity = getActivity();
1757        if (activity instanceof ConversationsActivity) {
1758            ((ConversationsActivity) activity).clearPendingViewIntent();
1759        }
1760        super.startActivityForResult(intent, requestCode);
1761    }
1762
1763    @Override
1764    public void onSaveInstanceState(Bundle outState) {
1765        super.onSaveInstanceState(outState);
1766        if (conversation != null) {
1767            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1768            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1769            final Uri uri = pendingTakePhotoUri.peek();
1770            if (uri != null) {
1771                outState.putString(STATE_PHOTO_URI, uri.toString());
1772            }
1773            final ScrollState scrollState = getScrollPosition();
1774            if (scrollState != null) {
1775                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1776            }
1777            final ArrayList<Attachment> attachments = mediaPreviewAdapter == null ? new ArrayList<>() : mediaPreviewAdapter.getAttachments();
1778            if (attachments.size() > 0) {
1779                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
1780            }
1781        }
1782    }
1783
1784    @Override
1785    public void onActivityCreated(Bundle savedInstanceState) {
1786        super.onActivityCreated(savedInstanceState);
1787        if (savedInstanceState == null) {
1788            return;
1789        }
1790        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1791        ArrayList<Attachment> attachments = savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
1792        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1793        if (uuid != null) {
1794            QuickLoader.set(uuid);
1795            this.pendingConversationsUuid.push(uuid);
1796            if (attachments != null && attachments.size() > 0) {
1797                this.pendingMediaPreviews.push(attachments);
1798            }
1799            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1800            if (takePhotoUri != null) {
1801                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1802            }
1803            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1804        }
1805    }
1806
1807    @Override
1808    public void onStart() {
1809        super.onStart();
1810        if (this.reInitRequiredOnStart && this.conversation != null) {
1811            final Bundle extras = pendingExtras.pop();
1812            reInit(this.conversation, extras != null);
1813            if (extras != null) {
1814                processExtras(extras);
1815            }
1816        } else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1817            final String uuid = pendingConversationsUuid.pop();
1818            Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1819            if (uuid != null) {
1820                findAndReInitByUuidOrArchive(uuid);
1821            }
1822        }
1823    }
1824
1825    @Override
1826    public void onStop() {
1827        super.onStop();
1828        final Activity activity = getActivity();
1829        messageListAdapter.unregisterListenerInAudioPlayer();
1830        if (activity == null || !activity.isChangingConfigurations()) {
1831            hideSoftKeyboard(activity);
1832            messageListAdapter.stopAudioPlayer();
1833        }
1834        if (this.conversation != null) {
1835            final String msg = this.binding.textinput.getText().toString();
1836            storeNextMessage(msg);
1837            updateChatState(this.conversation, msg);
1838            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1839        }
1840        this.reInitRequiredOnStart = true;
1841    }
1842
1843    private void updateChatState(final Conversation conversation, final String msg) {
1844        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1845        Account.State status = conversation.getAccount().getStatus();
1846        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1847            activity.xmppConnectionService.sendChatState(conversation);
1848        }
1849    }
1850
1851    private void saveMessageDraftStopAudioPlayer() {
1852        final Conversation previousConversation = this.conversation;
1853        if (this.activity == null || this.binding == null || previousConversation == null) {
1854            return;
1855        }
1856        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1857        final String msg = this.binding.textinput.getText().toString();
1858        storeNextMessage(msg);
1859        updateChatState(this.conversation, msg);
1860        messageListAdapter.stopAudioPlayer();
1861        mediaPreviewAdapter.clearPreviews();
1862        toggleInputMethod();
1863    }
1864
1865    public void reInit(Conversation conversation, Bundle extras) {
1866        QuickLoader.set(conversation.getUuid());
1867        this.saveMessageDraftStopAudioPlayer();
1868        this.clearPending();
1869        if (this.reInit(conversation, extras != null)) {
1870            if (extras != null) {
1871                processExtras(extras);
1872            }
1873            this.reInitRequiredOnStart = false;
1874        } else {
1875            this.reInitRequiredOnStart = true;
1876            pendingExtras.push(extras);
1877        }
1878        resetUnreadMessagesCount();
1879    }
1880
1881    private void reInit(Conversation conversation) {
1882        reInit(conversation, false);
1883    }
1884
1885    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1886        if (conversation == null) {
1887            return false;
1888        }
1889        this.conversation = conversation;
1890        //once we set the conversation all is good and it will automatically do the right thing in onStart()
1891        if (this.activity == null || this.binding == null) {
1892            return false;
1893        }
1894
1895        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1896            activity.onConversationArchived(this.conversation);
1897            return false;
1898        }
1899
1900        stopScrolling();
1901        Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1902
1903        if (this.conversation.isRead() && hasExtras) {
1904            Log.d(Config.LOGTAG, "trimming conversation");
1905            this.conversation.trim();
1906        }
1907
1908        setupIme();
1909
1910        final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1911
1912        this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1913        this.binding.textinput.setKeyboardListener(null);
1914        this.binding.textinput.setText("");
1915        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
1916        if (participating) {
1917            this.binding.textinput.append(this.conversation.getNextMessage());
1918        }
1919        this.binding.textinput.setKeyboardListener(this);
1920        messageListAdapter.updatePreferences();
1921        refresh(false);
1922        this.conversation.messagesLoaded.set(true);
1923        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1924
1925        if (hasExtras || scrolledToBottomAndNoPending) {
1926            resetUnreadMessagesCount();
1927            synchronized (this.messageList) {
1928                Log.d(Config.LOGTAG, "jump to first unread message");
1929                final Message first = conversation.getFirstUnreadMessage();
1930                final int bottom = Math.max(0, this.messageList.size() - 1);
1931                final int pos;
1932                final boolean jumpToBottom;
1933                if (first == null) {
1934                    pos = bottom;
1935                    jumpToBottom = true;
1936                } else {
1937                    int i = getIndexOf(first.getUuid(), this.messageList);
1938                    pos = i < 0 ? bottom : i;
1939                    jumpToBottom = false;
1940                }
1941                setSelection(pos, jumpToBottom);
1942            }
1943        }
1944
1945
1946        this.binding.messagesView.post(this::fireReadEvent);
1947        //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
1948        activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1949        return true;
1950    }
1951
1952    private void resetUnreadMessagesCount() {
1953        lastMessageUuid = null;
1954        hideUnreadMessagesCount();
1955    }
1956
1957    private void hideUnreadMessagesCount() {
1958        if (this.binding == null) {
1959            return;
1960        }
1961        this.binding.scrollToBottomButton.setEnabled(false);
1962        this.binding.scrollToBottomButton.hide();
1963        this.binding.unreadCountCustomView.setVisibility(View.GONE);
1964    }
1965
1966    private void setSelection(int pos, boolean jumpToBottom) {
1967        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
1968        this.binding.messagesView.post(() -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
1969        this.binding.messagesView.post(this::fireReadEvent);
1970    }
1971
1972
1973    private boolean scrolledToBottom() {
1974        return this.binding != null && scrolledToBottom(this.binding.messagesView);
1975    }
1976
1977    private void processExtras(Bundle extras) {
1978        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1979        final String text = extras.getString(Intent.EXTRA_TEXT);
1980        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1981        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
1982        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1983        final boolean doNotAppend = extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
1984        final List<Uri> uris = extractUris(extras);
1985        if (uris != null && uris.size() > 0) {
1986            final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
1987            mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), cleanedUris));
1988            toggleInputMethod();
1989            return;
1990        }
1991        if (nick != null) {
1992            if (pm) {
1993                Jid jid = conversation.getJid();
1994                try {
1995                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1996                    privateMessageWith(next);
1997                } catch (final IllegalArgumentException ignored) {
1998                    //do nothing
1999                }
2000            } else {
2001                final MucOptions mucOptions = conversation.getMucOptions();
2002                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2003                    highlightInConference(nick);
2004                }
2005            }
2006        } else {
2007            if (text != null && asQuote) {
2008                quoteText(text);
2009            } else {
2010                appendText(text, doNotAppend);
2011            }
2012        }
2013        final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2014        if (message != null) {
2015            startDownloadable(message);
2016        }
2017    }
2018
2019    private List<Uri> extractUris(Bundle extras) {
2020        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2021        if (uris != null) {
2022            return uris;
2023        }
2024        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2025        if (uri != null) {
2026            return Collections.singletonList(uri);
2027        } else {
2028            return null;
2029        }
2030    }
2031
2032    private List<Uri> cleanUris(List<Uri> uris) {
2033        Iterator<Uri> iterator = uris.iterator();
2034        while (iterator.hasNext()) {
2035            final Uri uri = iterator.next();
2036            if (FileBackend.weOwnFile(getActivity(), uri)) {
2037                iterator.remove();
2038                Toast.makeText(getActivity(), R.string.security_violation_not_attaching_file, Toast.LENGTH_SHORT).show();
2039            }
2040        }
2041        return uris;
2042    }
2043
2044    private boolean showBlockSubmenu(View view) {
2045        final Jid jid = conversation.getJid();
2046        final boolean showReject = !conversation.isWithStranger() && conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2047        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2048        popupMenu.inflate(R.menu.block);
2049        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2050        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2051        popupMenu.setOnMenuItemClickListener(menuItem -> {
2052            Blockable blockable;
2053            switch (menuItem.getItemId()) {
2054                case R.id.reject:
2055                    activity.xmppConnectionService.stopPresenceUpdatesTo(conversation.getContact());
2056                    updateSnackBar(conversation);
2057                    return true;
2058                case R.id.block_domain:
2059                    blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2060                    break;
2061                default:
2062                    blockable = conversation;
2063            }
2064            BlockContactDialog.show(activity, blockable);
2065            return true;
2066        });
2067        popupMenu.show();
2068        return true;
2069    }
2070
2071    private void updateSnackBar(final Conversation conversation) {
2072        final Account account = conversation.getAccount();
2073        final XmppConnection connection = account.getXmppConnection();
2074        final int mode = conversation.getMode();
2075        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2076        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2077            return;
2078        }
2079        if (account.getStatus() == Account.State.DISABLED) {
2080            showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2081        } else if (conversation.isBlocked()) {
2082            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2083        } else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2084            showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2085        } else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2086            showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2087        } else if (mode == Conversation.MODE_MULTI
2088                && !conversation.getMucOptions().online()
2089                && account.getStatus() == Account.State.ONLINE) {
2090            switch (conversation.getMucOptions().getError()) {
2091                case NICK_IN_USE:
2092                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2093                    break;
2094                case NO_RESPONSE:
2095                    showSnackbar(R.string.joining_conference, 0, null);
2096                    break;
2097                case SERVER_NOT_FOUND:
2098                    if (conversation.receivedMessagesCount() > 0) {
2099                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2100                    } else {
2101                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2102                    }
2103                    break;
2104                case REMOTE_SERVER_TIMEOUT:
2105                    if (conversation.receivedMessagesCount() > 0) {
2106                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2107                    } else {
2108                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2109                    }
2110                    break;
2111                case PASSWORD_REQUIRED:
2112                    showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2113                    break;
2114                case BANNED:
2115                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2116                    break;
2117                case MEMBERS_ONLY:
2118                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2119                    break;
2120                case RESOURCE_CONSTRAINT:
2121                    showSnackbar(R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2122                    break;
2123                case KICKED:
2124                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2125                    break;
2126                case UNKNOWN:
2127                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2128                    break;
2129                case INVALID_NICK:
2130                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2131                case SHUTDOWN:
2132                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2133                    break;
2134                case DESTROYED:
2135                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2136                    break;
2137                case NON_ANONYMOUS:
2138                    showSnackbar(R.string.group_chat_will_make_your_jabber_id_public, R.string.join, acceptJoin);
2139                    break;
2140                default:
2141                    hideSnackbar();
2142                    break;
2143            }
2144        } else if (account.hasPendingPgpIntent(conversation)) {
2145            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2146        } else if (connection != null
2147                && connection.getFeatures().blocking()
2148                && conversation.countMessages() != 0
2149                && !conversation.isBlocked()
2150                && conversation.isWithStranger()) {
2151            showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2152        } else {
2153            hideSnackbar();
2154        }
2155    }
2156
2157    @Override
2158    public void refresh() {
2159        if (this.binding == null) {
2160            Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2161            return;
2162        }
2163        if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2164            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2165                activity.onConversationArchived(this.conversation);
2166                return;
2167            }
2168        }
2169        this.refresh(true);
2170    }
2171
2172    private void refresh(boolean notifyConversationRead) {
2173        synchronized (this.messageList) {
2174            if (this.conversation != null) {
2175                conversation.populateWithMessages(this.messageList);
2176                updateSnackBar(conversation);
2177                updateStatusMessages();
2178                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2179                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2180                    binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2181                }
2182                this.messageListAdapter.notifyDataSetChanged();
2183                updateChatMsgHint();
2184                if (notifyConversationRead && activity != null) {
2185                    binding.messagesView.post(this::fireReadEvent);
2186                }
2187                updateSendButton();
2188                updateEditablity();
2189                activity.invalidateOptionsMenu();
2190            }
2191        }
2192    }
2193
2194    protected void messageSent() {
2195        mSendingPgpMessage.set(false);
2196        this.binding.textinput.setText("");
2197        if (conversation.setCorrectingMessage(null)) {
2198            this.binding.textinput.append(conversation.getDraftMessage());
2199            conversation.setDraftMessage(null);
2200        }
2201        storeNextMessage();
2202        updateChatMsgHint();
2203        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2204        final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2205        if (prefScrollToBottom || scrolledToBottom()) {
2206            new Handler().post(() -> {
2207                int size = messageList.size();
2208                this.binding.messagesView.setSelection(size - 1);
2209            });
2210        }
2211    }
2212
2213    private boolean storeNextMessage() {
2214        return storeNextMessage(this.binding.textinput.getText().toString());
2215    }
2216
2217    private boolean storeNextMessage(String msg) {
2218        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
2219        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && participating && this.conversation.setNextMessage(msg)) {
2220            this.activity.xmppConnectionService.updateConversation(this.conversation);
2221            return true;
2222        }
2223        return false;
2224    }
2225
2226    public void doneSendingPgpMessage() {
2227        mSendingPgpMessage.set(false);
2228    }
2229
2230    public long getMaxHttpUploadSize(Conversation conversation) {
2231        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2232        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2233    }
2234
2235    private void updateEditablity() {
2236        boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2237        this.binding.textinput.setFocusable(canWrite);
2238        this.binding.textinput.setFocusableInTouchMode(canWrite);
2239        this.binding.textSendButton.setEnabled(canWrite);
2240        this.binding.textinput.setCursorVisible(canWrite);
2241        this.binding.textinput.setEnabled(canWrite);
2242    }
2243
2244    public void updateSendButton() {
2245        boolean hasAttachments = mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2246        boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2247        final Conversation c = this.conversation;
2248        final Presence.Status status;
2249        final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2250        final SendButtonAction action;
2251        if (hasAttachments) {
2252            action = SendButtonAction.TEXT;
2253        } else {
2254            action = SendButtonTool.getAction(getActivity(), c, text);
2255        }
2256        if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2257            if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2258                status = Presence.Status.OFFLINE;
2259            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2260                status = c.getContact().getShownStatus();
2261            } else {
2262                status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2263            }
2264        } else {
2265            status = Presence.Status.OFFLINE;
2266        }
2267        this.binding.textSendButton.setTag(action);
2268        this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2269    }
2270
2271    protected void updateDateSeparators() {
2272        synchronized (this.messageList) {
2273            DateSeparator.addAll(this.messageList);
2274        }
2275    }
2276
2277    protected void updateStatusMessages() {
2278        updateDateSeparators();
2279        synchronized (this.messageList) {
2280            if (showLoadMoreMessages(conversation)) {
2281                this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2282            }
2283            if (conversation.getMode() == Conversation.MODE_SINGLE) {
2284                ChatState state = conversation.getIncomingChatState();
2285                if (state == ChatState.COMPOSING) {
2286                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2287                } else if (state == ChatState.PAUSED) {
2288                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2289                } else {
2290                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2291                        final Message message = this.messageList.get(i);
2292                        if (message.getType() != Message.TYPE_STATUS) {
2293                            if (message.getStatus() == Message.STATUS_RECEIVED) {
2294                                return;
2295                            } else {
2296                                if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2297                                    this.messageList.add(i + 1,
2298                                            Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2299                                    return;
2300                                }
2301                            }
2302                        }
2303                    }
2304                }
2305            } else {
2306                final MucOptions mucOptions = conversation.getMucOptions();
2307                final List<MucOptions.User> allUsers = mucOptions.getUsers();
2308                final Set<ReadByMarker> addedMarkers = new HashSet<>();
2309                ChatState state = ChatState.COMPOSING;
2310                List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2311                if (users.size() == 0) {
2312                    state = ChatState.PAUSED;
2313                    users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2314                }
2315                if (mucOptions.isPrivateAndNonAnonymous()) {
2316                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2317                        final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2318                        final List<MucOptions.User> shownMarkers = new ArrayList<>();
2319                        for (ReadByMarker marker : markersForMessage) {
2320                            if (!ReadByMarker.contains(marker, addedMarkers)) {
2321                                addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2322                                MucOptions.User user = mucOptions.findUser(marker);
2323                                if (user != null && !users.contains(user)) {
2324                                    shownMarkers.add(user);
2325                                }
2326                            }
2327                        }
2328                        final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2329                        final Message statusMessage;
2330                        final int size = shownMarkers.size();
2331                        if (size > 1) {
2332                            final String body;
2333                            if (size <= 4) {
2334                                body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2335                            } else if (ReadByMarker.allUsersRepresented(allUsers, markersForMessage, markerForSender)) {
2336                                body = getString(R.string.everyone_has_read_up_to_this_point);
2337                            } else {
2338                                body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2339                            }
2340                            statusMessage = Message.createStatusMessage(conversation, body);
2341                            statusMessage.setCounterparts(shownMarkers);
2342                        } else if (size == 1) {
2343                            statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2344                            statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2345                            statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2346                        } else {
2347                            statusMessage = null;
2348                        }
2349                        if (statusMessage != null) {
2350                            this.messageList.add(i + 1, statusMessage);
2351                        }
2352                        addedMarkers.add(markerForSender);
2353                        if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2354                            break;
2355                        }
2356                    }
2357                }
2358                if (users.size() > 0) {
2359                    Message statusMessage;
2360                    if (users.size() == 1) {
2361                        MucOptions.User user = users.get(0);
2362                        int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2363                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2364                        statusMessage.setTrueCounterpart(user.getRealJid());
2365                        statusMessage.setCounterpart(user.getFullJid());
2366                    } else {
2367                        int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2368                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2369                        statusMessage.setCounterparts(users);
2370                    }
2371                    this.messageList.add(statusMessage);
2372                }
2373
2374            }
2375        }
2376    }
2377
2378    private void stopScrolling() {
2379        long now = SystemClock.uptimeMillis();
2380        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2381        binding.messagesView.dispatchTouchEvent(cancel);
2382    }
2383
2384    private boolean showLoadMoreMessages(final Conversation c) {
2385        if (activity == null || activity.xmppConnectionService == null) {
2386            return false;
2387        }
2388        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2389        final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2390        return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2391    }
2392
2393    private boolean hasMamSupport(final Conversation c) {
2394        if (c.getMode() == Conversation.MODE_SINGLE) {
2395            final XmppConnection connection = c.getAccount().getXmppConnection();
2396            return connection != null && connection.getFeatures().mam();
2397        } else {
2398            return c.getMucOptions().mamSupport();
2399        }
2400    }
2401
2402    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2403        showSnackbar(message, action, clickListener, null);
2404    }
2405
2406    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2407        this.binding.snackbar.setVisibility(View.VISIBLE);
2408        this.binding.snackbar.setOnClickListener(null);
2409        this.binding.snackbarMessage.setText(message);
2410        this.binding.snackbarMessage.setOnClickListener(null);
2411        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2412        if (action != 0) {
2413            this.binding.snackbarAction.setText(action);
2414        }
2415        this.binding.snackbarAction.setOnClickListener(clickListener);
2416        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2417    }
2418
2419    protected void hideSnackbar() {
2420        this.binding.snackbar.setVisibility(View.GONE);
2421    }
2422
2423    protected void sendMessage(Message message) {
2424        activity.xmppConnectionService.sendMessage(message);
2425        messageSent();
2426    }
2427
2428    protected void sendPgpMessage(final Message message) {
2429        final XmppConnectionService xmppService = activity.xmppConnectionService;
2430        final Contact contact = message.getConversation().getContact();
2431        if (!activity.hasPgp()) {
2432            activity.showInstallPgpDialog();
2433            return;
2434        }
2435        if (conversation.getAccount().getPgpSignature() == null) {
2436            activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2437            return;
2438        }
2439        if (!mSendingPgpMessage.compareAndSet(false, true)) {
2440            Log.d(Config.LOGTAG, "sending pgp message already in progress");
2441        }
2442        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2443            if (contact.getPgpKeyId() != 0) {
2444                xmppService.getPgpEngine().hasKey(contact,
2445                        new UiCallback<Contact>() {
2446
2447                            @Override
2448                            public void userInputRequried(PendingIntent pi, Contact contact) {
2449                                startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2450                            }
2451
2452                            @Override
2453                            public void success(Contact contact) {
2454                                encryptTextMessage(message);
2455                            }
2456
2457                            @Override
2458                            public void error(int error, Contact contact) {
2459                                activity.runOnUiThread(() -> Toast.makeText(activity,
2460                                        R.string.unable_to_connect_to_keychain,
2461                                        Toast.LENGTH_SHORT
2462                                ).show());
2463                                mSendingPgpMessage.set(false);
2464                            }
2465                        });
2466
2467            } else {
2468                showNoPGPKeyDialog(false, (dialog, which) -> {
2469                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2470                    xmppService.updateConversation(conversation);
2471                    message.setEncryption(Message.ENCRYPTION_NONE);
2472                    xmppService.sendMessage(message);
2473                    messageSent();
2474                });
2475            }
2476        } else {
2477            if (conversation.getMucOptions().pgpKeysInUse()) {
2478                if (!conversation.getMucOptions().everybodyHasKeys()) {
2479                    Toast warning = Toast
2480                            .makeText(getActivity(),
2481                                    R.string.missing_public_keys,
2482                                    Toast.LENGTH_LONG);
2483                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2484                    warning.show();
2485                }
2486                encryptTextMessage(message);
2487            } else {
2488                showNoPGPKeyDialog(true, (dialog, which) -> {
2489                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2490                    message.setEncryption(Message.ENCRYPTION_NONE);
2491                    xmppService.updateConversation(conversation);
2492                    xmppService.sendMessage(message);
2493                    messageSent();
2494                });
2495            }
2496        }
2497    }
2498
2499    public void encryptTextMessage(Message message) {
2500        activity.xmppConnectionService.getPgpEngine().encrypt(message,
2501                new UiCallback<Message>() {
2502
2503                    @Override
2504                    public void userInputRequried(PendingIntent pi, Message message) {
2505                        startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2506                    }
2507
2508                    @Override
2509                    public void success(Message message) {
2510                        //TODO the following two call can be made before the callback
2511                        getActivity().runOnUiThread(() -> messageSent());
2512                    }
2513
2514                    @Override
2515                    public void error(final int error, Message message) {
2516                        getActivity().runOnUiThread(() -> {
2517                            doneSendingPgpMessage();
2518                            Toast.makeText(getActivity(), error == 0 ? R.string.unable_to_connect_to_keychain : error, Toast.LENGTH_SHORT).show();
2519                        });
2520
2521                    }
2522                });
2523    }
2524
2525    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2526        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2527        builder.setIconAttribute(android.R.attr.alertDialogIcon);
2528        if (plural) {
2529            builder.setTitle(getString(R.string.no_pgp_keys));
2530            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2531        } else {
2532            builder.setTitle(getString(R.string.no_pgp_key));
2533            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2534        }
2535        builder.setNegativeButton(getString(R.string.cancel), null);
2536        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2537        builder.create().show();
2538    }
2539
2540    public void appendText(String text, final boolean doNotAppend) {
2541        if (text == null) {
2542            return;
2543        }
2544        final Editable editable = this.binding.textinput.getText();
2545        String previous = editable == null ? "" : editable.toString();
2546        if (doNotAppend && !TextUtils.isEmpty(previous)) {
2547            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG).show();
2548            return;
2549        }
2550        if (UIHelper.isLastLineQuote(previous)) {
2551            text = '\n' + text;
2552        } else if (previous.length() != 0 && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
2553            text = " " + text;
2554        }
2555        this.binding.textinput.append(text);
2556    }
2557
2558    @Override
2559    public boolean onEnterPressed() {
2560        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2561        final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2562        if (enterIsSend) {
2563            sendMessage();
2564            return true;
2565        } else {
2566            return false;
2567        }
2568    }
2569
2570    @Override
2571    public void onTypingStarted() {
2572        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2573        if (service == null) {
2574            return;
2575        }
2576        Account.State status = conversation.getAccount().getStatus();
2577        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2578            service.sendChatState(conversation);
2579        }
2580        updateSendButton();
2581    }
2582
2583    @Override
2584    public void onTypingStopped() {
2585        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2586        if (service == null) {
2587            return;
2588        }
2589        Account.State status = conversation.getAccount().getStatus();
2590        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2591            service.sendChatState(conversation);
2592        }
2593    }
2594
2595    @Override
2596    public void onTextDeleted() {
2597        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2598        if (service == null) {
2599            return;
2600        }
2601        Account.State status = conversation.getAccount().getStatus();
2602        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2603            service.sendChatState(conversation);
2604        }
2605        if (storeNextMessage()) {
2606            activity.onConversationsListItemUpdated();
2607        }
2608        updateSendButton();
2609    }
2610
2611    @Override
2612    public void onTextChanged() {
2613        if (conversation != null && conversation.getCorrectingMessage() != null) {
2614            updateSendButton();
2615        }
2616    }
2617
2618    @Override
2619    public boolean onTabPressed(boolean repeated) {
2620        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2621            return false;
2622        }
2623        if (repeated) {
2624            completionIndex++;
2625        } else {
2626            lastCompletionLength = 0;
2627            completionIndex = 0;
2628            final String content = this.binding.textinput.getText().toString();
2629            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2630            int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2631            firstWord = start == 0;
2632            incomplete = content.substring(start, lastCompletionCursor);
2633        }
2634        List<String> completions = new ArrayList<>();
2635        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2636            String name = user.getName();
2637            if (name != null && name.startsWith(incomplete)) {
2638                completions.add(name + (firstWord ? ": " : " "));
2639            }
2640        }
2641        Collections.sort(completions);
2642        if (completions.size() > completionIndex) {
2643            String completion = completions.get(completionIndex).substring(incomplete.length());
2644            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2645            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2646            lastCompletionLength = completion.length();
2647        } else {
2648            completionIndex = -1;
2649            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2650            lastCompletionLength = 0;
2651        }
2652        return true;
2653    }
2654
2655    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2656        try {
2657            getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2658        } catch (final SendIntentException ignored) {
2659        }
2660    }
2661
2662    @Override
2663    public void onBackendConnected() {
2664        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2665        String uuid = pendingConversationsUuid.pop();
2666        if (uuid != null) {
2667            if (!findAndReInitByUuidOrArchive(uuid)) {
2668                return;
2669            }
2670        } else {
2671            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2672                clearPending();
2673                activity.onConversationArchived(conversation);
2674                return;
2675            }
2676        }
2677        ActivityResult activityResult = postponedActivityResult.pop();
2678        if (activityResult != null) {
2679            handleActivityResult(activityResult);
2680        }
2681        clearPending();
2682    }
2683
2684    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2685        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2686        if (conversation == null) {
2687            clearPending();
2688            activity.onConversationArchived(null);
2689            return false;
2690        }
2691        reInit(conversation);
2692        ScrollState scrollState = pendingScrollState.pop();
2693        String lastMessageUuid = pendingLastMessageUuid.pop();
2694        List<Attachment> attachments = pendingMediaPreviews.pop();
2695        if (scrollState != null) {
2696            setScrollPosition(scrollState, lastMessageUuid);
2697        }
2698        if (attachments != null && attachments.size() > 0) {
2699            Log.d(Config.LOGTAG, "had attachments on restore");
2700            mediaPreviewAdapter.addMediaPreviews(attachments);
2701            toggleInputMethod();
2702        }
2703        return true;
2704    }
2705
2706    private void clearPending() {
2707        if (postponedActivityResult.clear()) {
2708            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2709        }
2710        if (pendingScrollState.clear()) {
2711            Log.e(Config.LOGTAG, "cleared scroll state");
2712        }
2713        if (pendingTakePhotoUri.clear()) {
2714            Log.e(Config.LOGTAG, "cleared pending photo uri");
2715        }
2716        if (pendingConversationsUuid.clear()) {
2717            Log.e(Config.LOGTAG,"cleared pending conversations uuid");
2718        }
2719        if (pendingMediaPreviews.clear()) {
2720            Log.e(Config.LOGTAG,"cleared pending media previews");
2721        }
2722    }
2723
2724    public Conversation getConversation() {
2725        return conversation;
2726    }
2727
2728    @Override
2729    public void onContactPictureLongClicked(View v, final Message message) {
2730        if (message.getStatus() <= Message.STATUS_RECEIVED) {
2731            final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
2732            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
2733                final Jid cp = message.getCounterpart();
2734                if (cp == null || cp.isBareJid()) {
2735                    return;
2736                }
2737                Jid tcp = message.getTrueCounterpart();
2738                User userByRealJid = tcp != null ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp) : null;
2739                final User user = userByRealJid != null ? userByRealJid : conversation.getMucOptions().findUserByFullJid(cp);
2740                popupMenu.inflate(R.menu.muc_details_context);
2741                final Menu menu = popupMenu.getMenu();
2742                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(activity, menu, conversation, user);
2743                popupMenu.setOnMenuItemClickListener(menuItem -> MucDetailsContextMenuHelper.onContextItemSelected(menuItem, user, conversation, activity));
2744            } else {
2745                final Contact contact = message.getContact();
2746                if (contact.isSelf()) {
2747                    activity.showQrCode(conversation.getAccount().getShareableUri());
2748                    return;
2749                }
2750                popupMenu.inflate(R.menu.one_on_one_context);
2751                popupMenu.setOnMenuItemClickListener(item -> {
2752                    switch (item.getItemId()) {
2753                        case R.id.action_contact_details:
2754                            String fingerprint;
2755                            if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
2756                                fingerprint = "pgp";
2757                            } else {
2758                                fingerprint = message.getFingerprint();
2759                            }
2760                            activity.switchToContactDetails(message.getContact(), fingerprint);
2761                            break;
2762                        case R.id.action_show_qr_code:
2763                            activity.showQrCode("xmpp:" + message.getContact().getJid().asBareJid().toEscapedString());
2764                            break;
2765                    }
2766                    return true;
2767                });
2768            }
2769            popupMenu.show();
2770        } else {
2771            activity.showQrCode(conversation.getAccount().getShareableUri());
2772        }
2773    }
2774
2775    @Override
2776    public void onContactPictureClicked(Message message) {
2777        String fingerprint;
2778        if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
2779            fingerprint = "pgp";
2780        } else {
2781            fingerprint = message.getFingerprint();
2782        }
2783        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
2784        if (received) {
2785            if (message.getConversation() instanceof Conversation && message.getConversation().getMode() == Conversation.MODE_MULTI) {
2786                Jid tcp = message.getTrueCounterpart();
2787                Jid user = message.getCounterpart();
2788                if (user != null && !user.isBareJid()) {
2789                    final MucOptions mucOptions = ((Conversation) message.getConversation()).getMucOptions();
2790                    if (mucOptions.participating() || ((Conversation) message.getConversation()).getNextCounterpart() != null) {
2791                        if (!mucOptions.isUserInRoom(user) && mucOptions.findUserByRealJid(tcp == null ? null : tcp.asBareJid()) == null) {
2792                            Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
2793                        }
2794                        highlightInConference(user.getResource());
2795                    } else {
2796                        Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
2797                    }
2798                }
2799                return;
2800            } else {
2801                if (!message.getContact().isSelf()) {
2802                    activity.switchToContactDetails(message.getContact(), fingerprint);
2803                    return;
2804                }
2805            }
2806        }
2807        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
2808    }
2809}