ConversationFragment.java

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