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.MenuDoubleTabUtil;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.ScrollState;
  92import eu.siacs.conversations.ui.util.SendButtonAction;
  93import eu.siacs.conversations.ui.util.SendButtonTool;
  94import eu.siacs.conversations.ui.widget.EditMessage;
  95import eu.siacs.conversations.utils.ExceptionHelper;
  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;
 109
 110
 111public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 112
 113
 114	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 115	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 116	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 117	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 118	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 119	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 120	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 121	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 122	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 123	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 124	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 125	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 126	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 127	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 128
 129	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 130	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 131	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 132	public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 133	private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 134
 135	private final List<Message> messageList = new ArrayList<>();
 136	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 137	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 138	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 139	private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 140	private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 141	private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 142	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 143	public Uri mPendingEditorContent = null;
 144	protected MessageAdapter messageListAdapter;
 145	private String lastMessageUuid = null;
 146	private Conversation conversation;
 147	private FragmentConversationBinding binding;
 148	private Toast messageLoaderToast;
 149	private ConversationsActivity activity;
 150	private boolean reInitRequiredOnStart = true;
 151	private OnClickListener clickToMuc = new OnClickListener() {
 152
 153		@Override
 154		public void onClick(View v) {
 155			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 156			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 157			intent.putExtra("uuid", conversation.getUuid());
 158			startActivity(intent);
 159		}
 160	};
 161	private OnClickListener leaveMuc = new OnClickListener() {
 162
 163		@Override
 164		public void onClick(View v) {
 165			activity.xmppConnectionService.archiveConversation(conversation);
 166		}
 167	};
 168	private OnClickListener joinMuc = new OnClickListener() {
 169
 170		@Override
 171		public void onClick(View v) {
 172			activity.xmppConnectionService.joinMuc(conversation);
 173		}
 174	};
 175	private OnClickListener enterPassword = new OnClickListener() {
 176
 177		@Override
 178		public void onClick(View v) {
 179			MucOptions muc = conversation.getMucOptions();
 180			String password = muc.getPassword();
 181			if (password == null) {
 182				password = "";
 183			}
 184			activity.quickPasswordEdit(password, value -> {
 185				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 186				return null;
 187			});
 188		}
 189	};
 190	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 191
 192		@Override
 193		public void onScrollStateChanged(AbsListView view, int scrollState) {
 194			if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 195				fireReadEvent();
 196			}
 197		}
 198
 199		@Override
 200		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 201			toggleScrollDownButton(view);
 202			synchronized (ConversationFragment.this.messageList) {
 203				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 204					long timestamp;
 205					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 206						timestamp = messageList.get(1).getTimeSent();
 207					} else {
 208						timestamp = messageList.get(0).getTimeSent();
 209					}
 210					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 211						@Override
 212						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 213							if (ConversationFragment.this.conversation != conversation) {
 214								conversation.messagesLoaded.set(true);
 215								return;
 216							}
 217							runOnUiThread(() -> {
 218								synchronized (messageList) {
 219									final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 220									Message message = null;
 221									int childPos;
 222									for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 223										message = messageList.get(oldPosition + childPos);
 224										if (message.getType() != Message.TYPE_STATUS) {
 225											break;
 226										}
 227									}
 228									final String uuid = message != null ? message.getUuid() : null;
 229									View v = binding.messagesView.getChildAt(childPos);
 230									final int pxOffset = (v == null) ? 0 : v.getTop();
 231									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 232									try {
 233										updateStatusMessages();
 234									} catch (IllegalStateException e) {
 235										Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 236									}
 237									messageListAdapter.notifyDataSetChanged();
 238									int pos = Math.max(getIndexOf(uuid, messageList), 0);
 239									binding.messagesView.setSelectionFromTop(pos, pxOffset);
 240									if (messageLoaderToast != null) {
 241										messageLoaderToast.cancel();
 242									}
 243									conversation.messagesLoaded.set(true);
 244								}
 245							});
 246						}
 247
 248						@Override
 249						public void informUser(final int resId) {
 250
 251							runOnUiThread(() -> {
 252								if (messageLoaderToast != null) {
 253									messageLoaderToast.cancel();
 254								}
 255								if (ConversationFragment.this.conversation != conversation) {
 256									return;
 257								}
 258								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 259								messageLoaderToast.show();
 260							});
 261
 262						}
 263					});
 264
 265				}
 266			}
 267		}
 268	};
 269	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 270		@Override
 271		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 272			// try to get permission to read the image, if applicable
 273			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 274				try {
 275					inputContentInfo.requestPermission();
 276				} catch (Exception e) {
 277					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 278					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 279					).show();
 280					return false;
 281				}
 282			}
 283			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 284				attachImageToConversation(inputContentInfo.getContentUri());
 285			} else {
 286				mPendingEditorContent = inputContentInfo.getContentUri();
 287			}
 288			return true;
 289		}
 290	};
 291	private Message selectedMessage;
 292	private OnClickListener mEnableAccountListener = new OnClickListener() {
 293		@Override
 294		public void onClick(View v) {
 295			final Account account = conversation == null ? null : conversation.getAccount();
 296			if (account != null) {
 297				account.setOption(Account.OPTION_DISABLED, false);
 298				activity.xmppConnectionService.updateAccount(account);
 299			}
 300		}
 301	};
 302	private OnClickListener mUnblockClickListener = new OnClickListener() {
 303		@Override
 304		public void onClick(final View v) {
 305			v.post(() -> v.setVisibility(View.INVISIBLE));
 306			if (conversation.isDomainBlocked()) {
 307				BlockContactDialog.show(activity, conversation);
 308			} else {
 309				unblockConversation(conversation);
 310			}
 311		}
 312	};
 313	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 314	private OnClickListener mAddBackClickListener = new OnClickListener() {
 315
 316		@Override
 317		public void onClick(View v) {
 318			final Contact contact = conversation == null ? null : conversation.getContact();
 319			if (contact != null) {
 320				activity.xmppConnectionService.createContact(contact, true);
 321				activity.switchToContactDetails(contact);
 322			}
 323		}
 324	};
 325	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 326	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 327		@Override
 328		public void onClick(View v) {
 329			final Contact contact = conversation == null ? null : conversation.getContact();
 330			if (contact != null) {
 331				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 332						activity.xmppConnectionService.getPresenceGenerator()
 333								.sendPresenceUpdatesTo(contact));
 334				hideSnackbar();
 335			}
 336		}
 337	};
 338	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 339
 340		@Override
 341		public void onClick(View v) {
 342			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 343			if (pendingIntent != null) {
 344				try {
 345					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 346							REQUEST_DECRYPT_PGP,
 347							null,
 348							0,
 349							0,
 350							0);
 351				} catch (SendIntentException e) {
 352					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 353					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 354				}
 355			}
 356			updateSnackBar(conversation);
 357		}
 358	};
 359	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 360	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 361		if (actionId == EditorInfo.IME_ACTION_SEND) {
 362			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 363			if (imm != null && imm.isFullscreenMode()) {
 364				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 365			}
 366			sendMessage();
 367			return true;
 368		} else {
 369			return false;
 370		}
 371	};
 372	private OnClickListener mScrollButtonListener = new OnClickListener() {
 373
 374		@Override
 375		public void onClick(View v) {
 376			stopScrolling();
 377			setSelection(binding.messagesView.getCount() - 1);
 378		}
 379	};
 380	private OnClickListener mSendButtonListener = new OnClickListener() {
 381
 382		@Override
 383		public void onClick(View v) {
 384			Object tag = v.getTag();
 385			if (tag instanceof SendButtonAction) {
 386				SendButtonAction action = (SendButtonAction) tag;
 387				switch (action) {
 388					case TAKE_PHOTO:
 389					case RECORD_VIDEO:
 390					case SEND_LOCATION:
 391					case RECORD_VOICE:
 392					case CHOOSE_PICTURE:
 393						attachFile(action.toChoice());
 394						break;
 395					case CANCEL:
 396						if (conversation != null) {
 397							if (conversation.setCorrectingMessage(null)) {
 398								binding.textinput.setText("");
 399								binding.textinput.append(conversation.getDraftMessage());
 400								conversation.setDraftMessage(null);
 401							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 402								conversation.setNextCounterpart(null);
 403							}
 404							updateChatMsgHint();
 405							updateSendButton();
 406							updateEditablity();
 407						}
 408						break;
 409					default:
 410						sendMessage();
 411				}
 412			} else {
 413				sendMessage();
 414			}
 415		}
 416	};
 417	private int completionIndex = 0;
 418	private int lastCompletionLength = 0;
 419	private String incomplete;
 420	private int lastCompletionCursor;
 421	private boolean firstWord = false;
 422	private Message mPendingDownloadableMessage;
 423
 424	private static ConversationFragment findConversationFragment(Activity activity) {
 425		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 426		if (fragment != null && fragment instanceof ConversationFragment) {
 427			return (ConversationFragment) fragment;
 428		}
 429		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 430		if (fragment != null && fragment instanceof ConversationFragment) {
 431			return (ConversationFragment) fragment;
 432		}
 433		return null;
 434	}
 435
 436	public static void startStopPending(Activity activity) {
 437		ConversationFragment fragment = findConversationFragment(activity);
 438		if (fragment != null) {
 439			fragment.messageListAdapter.startStopPending();
 440		}
 441	}
 442
 443	public static void downloadFile(Activity activity, Message message) {
 444		ConversationFragment fragment = findConversationFragment(activity);
 445		if (fragment != null) {
 446			fragment.startDownloadable(message);
 447		}
 448	}
 449
 450	public static void registerPendingMessage(Activity activity, Message message) {
 451		ConversationFragment fragment = findConversationFragment(activity);
 452		if (fragment != null) {
 453			fragment.pendingMessage.push(message);
 454		}
 455	}
 456
 457	public static void openPendingMessage(Activity activity) {
 458		ConversationFragment fragment = findConversationFragment(activity);
 459		if (fragment != null) {
 460			Message message = fragment.pendingMessage.pop();
 461			if (message != null) {
 462				fragment.messageListAdapter.openDownloadable(message);
 463			}
 464		}
 465	}
 466
 467	public static Conversation getConversation(Activity activity) {
 468		return getConversation(activity, R.id.secondary_fragment);
 469	}
 470
 471	private static Conversation getConversation(Activity activity, @IdRes int res) {
 472		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 473		if (fragment != null && fragment instanceof ConversationFragment) {
 474			return ((ConversationFragment) fragment).getConversation();
 475		} else {
 476			return null;
 477		}
 478	}
 479
 480	public static Conversation getConversationReliable(Activity activity) {
 481		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 482		if (conversation != null) {
 483			return conversation;
 484		}
 485		return getConversation(activity, R.id.main_fragment);
 486	}
 487
 488	private static boolean allGranted(int[] grantResults) {
 489		for (int grantResult : grantResults) {
 490			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 491				return false;
 492			}
 493		}
 494		return true;
 495	}
 496
 497	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 498		for (int i = 0; i < grantResults.length; ++i) {
 499			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 500				return permissions[i];
 501			}
 502		}
 503		return null;
 504	}
 505
 506	private static void hideSoftKeyboard(final Activity activity) {
 507		InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 508		View view = activity.getCurrentFocus();
 509		if (view != null && imm != null) {
 510			imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 511		}
 512	}
 513
 514	private static boolean scrolledToBottom(AbsListView listView) {
 515		final int count = listView.getCount();
 516		if (count == 0) {
 517			return true;
 518		} else if (listView.getLastVisiblePosition() == count - 1) {
 519			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 520			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 521		} else {
 522			return false;
 523		}
 524	}
 525
 526	private void toggleScrollDownButton() {
 527		toggleScrollDownButton(binding.messagesView);
 528	}
 529
 530	private void toggleScrollDownButton(AbsListView listView) {
 531		if (conversation == null) {
 532			return;
 533		}
 534		if (scrolledToBottom(listView)) {
 535			lastMessageUuid = null;
 536			hideUnreadMessagesCount();
 537		} else {
 538			binding.scrollToBottomButton.setEnabled(true);
 539			binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 540			if (lastMessageUuid == null) {
 541				lastMessageUuid = conversation.getLatestMessage().getUuid();
 542			}
 543			if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 544				binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 545			}
 546		}
 547	}
 548
 549	private int getIndexOf(String uuid, List<Message> messages) {
 550		if (uuid == null) {
 551			return messages.size() - 1;
 552		}
 553		for (int i = 0; i < messages.size(); ++i) {
 554			if (uuid.equals(messages.get(i).getUuid())) {
 555				return i;
 556			} else {
 557				Message next = messages.get(i);
 558				while (next != null && next.wasMergedIntoPrevious()) {
 559					if (uuid.equals(next.getUuid())) {
 560						return i;
 561					}
 562					next = next.next();
 563				}
 564
 565			}
 566		}
 567		return -1;
 568	}
 569
 570	private ScrollState getScrollPosition() {
 571		final ListView listView = this.binding.messagesView;
 572		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 573			return null;
 574		} else {
 575			final int pos = listView.getFirstVisiblePosition();
 576			final View view = listView.getChildAt(0);
 577			if (view == null) {
 578				return null;
 579			} else {
 580				return new ScrollState(pos, view.getTop());
 581			}
 582		}
 583	}
 584
 585	private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 586		if (scrollPosition != null) {
 587
 588			this.lastMessageUuid = lastMessageUuid;
 589			if (lastMessageUuid != null) {
 590				binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 591			}
 592			//TODO maybe this needs a 'post'
 593			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 594			toggleScrollDownButton();
 595		}
 596	}
 597
 598	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 599		if (conversation == null) {
 600			return;
 601		}
 602		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 603
 604			@Override
 605			public void success(Message message) {
 606
 607			}
 608
 609			@Override
 610			public void error(int errorCode, Message object) {
 611				//TODO show possible pgp error
 612			}
 613
 614			@Override
 615			public void userInputRequried(PendingIntent pi, Message object) {
 616
 617			}
 618		});
 619	}
 620
 621	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 622		if (conversation == null) {
 623			return;
 624		}
 625		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 626		prepareFileToast.show();
 627		activity.delegateUriPermissionsToService(uri);
 628		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 629			@Override
 630			public void inform(final String text) {
 631				hidePrepareFileToast(prepareFileToast);
 632				runOnUiThread(() -> activity.replaceToast(text));
 633			}
 634
 635			@Override
 636			public void success(Message message) {
 637				runOnUiThread(() -> activity.hideToast());
 638				hidePrepareFileToast(prepareFileToast);
 639			}
 640
 641			@Override
 642			public void error(final int errorCode, Message message) {
 643				hidePrepareFileToast(prepareFileToast);
 644				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 645
 646			}
 647
 648			@Override
 649			public void userInputRequried(PendingIntent pi, Message message) {
 650				hidePrepareFileToast(prepareFileToast);
 651			}
 652		});
 653	}
 654
 655	public void attachImageToConversation(Uri uri) {
 656		this.attachImageToConversation(conversation, uri);
 657	}
 658
 659	private void attachImageToConversation(Conversation conversation, Uri uri) {
 660		if (conversation == null) {
 661			return;
 662		}
 663		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 664		prepareFileToast.show();
 665		activity.delegateUriPermissionsToService(uri);
 666		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 667				new UiCallback<Message>() {
 668
 669					@Override
 670					public void userInputRequried(PendingIntent pi, Message object) {
 671						hidePrepareFileToast(prepareFileToast);
 672					}
 673
 674					@Override
 675					public void success(Message message) {
 676						hidePrepareFileToast(prepareFileToast);
 677					}
 678
 679					@Override
 680					public void error(final int error, Message message) {
 681						hidePrepareFileToast(prepareFileToast);
 682						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 683					}
 684				});
 685	}
 686
 687	private void hidePrepareFileToast(final Toast prepareFileToast) {
 688		if (prepareFileToast != null && activity != null) {
 689			activity.runOnUiThread(prepareFileToast::cancel);
 690		}
 691	}
 692
 693	private void sendMessage() {
 694		final String body = this.binding.textinput.getText().toString();
 695		final Conversation conversation = this.conversation;
 696		if (body.length() == 0 || conversation == null) {
 697			return;
 698		}
 699		final Message message;
 700		if (conversation.getCorrectingMessage() == null) {
 701			message = new Message(conversation, body, conversation.getNextEncryption());
 702			if (conversation.getMode() == Conversation.MODE_MULTI) {
 703				final Jid nextCounterpart = conversation.getNextCounterpart();
 704				if (nextCounterpart != null) {
 705					message.setCounterpart(nextCounterpart);
 706					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 707					message.setType(Message.TYPE_PRIVATE);
 708				}
 709			}
 710		} else {
 711			message = conversation.getCorrectingMessage();
 712			message.setBody(body);
 713			message.setEdited(message.getUuid());
 714			message.setUuid(UUID.randomUUID().toString());
 715		}
 716		switch (message.getConversation().getNextEncryption()) {
 717			case Message.ENCRYPTION_PGP:
 718				sendPgpMessage(message);
 719				break;
 720			case Message.ENCRYPTION_AXOLOTL:
 721				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 722					sendMessage(message);
 723				}
 724				break;
 725			default:
 726				sendMessage(message);
 727		}
 728	}
 729
 730	protected boolean trustKeysIfNeeded(int requestCode) {
 731		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 732	}
 733
 734	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 735		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 736		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 737		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 738		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 739		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 740		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 741		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 742		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 743			axolotlService.createSessionsIfNeeded(conversation);
 744			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 745			String[] contacts = new String[targets.size()];
 746			for (int i = 0; i < contacts.length; ++i) {
 747				contacts[i] = targets.get(i).toString();
 748			}
 749			intent.putExtra("contacts", contacts);
 750			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 751			intent.putExtra("choice", attachmentChoice);
 752			intent.putExtra("conversation", conversation.getUuid());
 753			startActivityForResult(intent, requestCode);
 754			return true;
 755		} else {
 756			return false;
 757		}
 758	}
 759
 760	public void updateChatMsgHint() {
 761		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 762		if (conversation.getCorrectingMessage() != null) {
 763			this.binding.textinput.setHint(R.string.send_corrected_message);
 764		} else if (multi && conversation.getNextCounterpart() != null) {
 765			this.binding.textinput.setHint(getString(
 766					R.string.send_private_message_to,
 767					conversation.getNextCounterpart().getResource()));
 768		} else if (multi && !conversation.getMucOptions().participating()) {
 769			this.binding.textinput.setHint(R.string.you_are_not_participating);
 770		} else {
 771			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 772			getActivity().invalidateOptionsMenu();
 773		}
 774	}
 775
 776	public void setupIme() {
 777		this.binding.textinput.refreshIme();
 778	}
 779
 780	private void handleActivityResult(ActivityResult activityResult) {
 781		if (activityResult.resultCode == Activity.RESULT_OK) {
 782			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 783		} else {
 784			handleNegativeActivityResult(activityResult.requestCode);
 785		}
 786	}
 787
 788	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 789		switch (requestCode) {
 790			case REQUEST_TRUST_KEYS_TEXT:
 791				final String body = this.binding.textinput.getText().toString();
 792				Message message = new Message(conversation, body, conversation.getNextEncryption());
 793				sendMessage(message);
 794				break;
 795			case REQUEST_TRUST_KEYS_MENU:
 796				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 797				selectPresenceToAttachFile(choice);
 798				break;
 799			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 800				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 801				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 802					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 803					attachImageToConversation(conversation, i.next());
 804				}
 805				break;
 806			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 807				Uri takePhotoUri = pendingTakePhotoUri.pop();
 808				if (takePhotoUri != null) {
 809					attachImageToConversation(conversation, takePhotoUri);
 810				} else {
 811					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 812				}
 813				break;
 814			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 815			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 816			case ATTACHMENT_CHOICE_RECORD_VOICE:
 817				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 818				String type = data.getType();
 819				final PresenceSelector.OnPresenceSelected callback = () -> {
 820					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 821						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 822						attachFileToConversation(conversation, i.next(), type);
 823					}
 824				};
 825				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 826					callback.onPresenceSelected();
 827				} else {
 828					activity.selectPresence(conversation, callback);
 829				}
 830				break;
 831			case ATTACHMENT_CHOICE_LOCATION:
 832				double latitude = data.getDoubleExtra("latitude", 0);
 833				double longitude = data.getDoubleExtra("longitude", 0);
 834				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 835				attachLocationToConversation(conversation, geo);
 836				break;
 837			case REQUEST_INVITE_TO_CONVERSATION:
 838				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 839				if (invite != null) {
 840					if (invite.execute(activity)) {
 841						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 842						activity.mToast.show();
 843					}
 844				}
 845				break;
 846		}
 847	}
 848
 849	private void handleNegativeActivityResult(int requestCode) {
 850		switch (requestCode) {
 851			//nothing to do for now
 852		}
 853	}
 854
 855	@Override
 856	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 857		super.onActivityResult(requestCode, resultCode, data);
 858		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 859		if (activity != null && activity.xmppConnectionService != null) {
 860			handleActivityResult(activityResult);
 861		} else {
 862			this.postponedActivityResult.push(activityResult);
 863		}
 864	}
 865
 866	public void unblockConversation(final Blockable conversation) {
 867		activity.xmppConnectionService.sendUnblockRequest(conversation);
 868	}
 869
 870	@Override
 871	public void onAttach(Activity activity) {
 872		super.onAttach(activity);
 873		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 874		if (activity instanceof ConversationsActivity) {
 875			this.activity = (ConversationsActivity) activity;
 876		} else {
 877			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 878		}
 879	}
 880
 881	@Override
 882	public void onDetach() {
 883		super.onDetach();
 884		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 885	}
 886
 887	@Override
 888	public void onCreate(Bundle savedInstanceState) {
 889		super.onCreate(savedInstanceState);
 890		setHasOptionsMenu(true);
 891	}
 892
 893	@Override
 894	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 895		menuInflater.inflate(R.menu.fragment_conversation, menu);
 896		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 897		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 898		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 899		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 900		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 901
 902
 903		if (conversation != null) {
 904			if (conversation.getMode() == Conversation.MODE_MULTI) {
 905				menuContactDetails.setVisible(false);
 906				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 907			} else {
 908				menuContactDetails.setVisible(!this.conversation.withSelf());
 909				menuMucDetails.setVisible(false);
 910				final XmppConnectionService service = activity.xmppConnectionService;
 911				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 912			}
 913			if (conversation.isMuted()) {
 914				menuMute.setVisible(false);
 915			} else {
 916				menuUnmute.setVisible(false);
 917			}
 918			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 919			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 920		}
 921		super.onCreateOptionsMenu(menu, menuInflater);
 922	}
 923
 924	@Override
 925	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 926		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 927		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 928
 929		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 930
 931		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 932		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 933
 934		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 935
 936		binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 937		binding.messagesView.setOnScrollListener(mOnScrollListener);
 938		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 939		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 940		messageListAdapter.setOnContactPictureClicked(message -> {
 941			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 942			if (received) {
 943				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 944					Jid user = message.getCounterpart();
 945					if (user != null && !user.isBareJid()) {
 946						final MucOptions mucOptions = message.getConversation().getMucOptions();
 947						if (mucOptions.participating() || message.getConversation().getNextCounterpart() != null) {
 948							if (!mucOptions.isUserInRoom(user)) {
 949								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 950							}
 951							highlightInConference(user.getResource());
 952						} else {
 953							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 954						}
 955					}
 956					return;
 957				} else {
 958					if (!message.getContact().isSelf()) {
 959						String fingerprint;
 960						if (message.getEncryption() == Message.ENCRYPTION_PGP
 961								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 962							fingerprint = "pgp";
 963						} else {
 964							fingerprint = message.getFingerprint();
 965						}
 966						activity.switchToContactDetails(message.getContact(), fingerprint);
 967						return;
 968					}
 969				}
 970			}
 971			Account account = message.getConversation().getAccount();
 972			Intent intent = new Intent(activity, EditAccountActivity.class);
 973			intent.putExtra("jid", account.getJid().asBareJid().toString());
 974			String fingerprint;
 975			if (message.getEncryption() == Message.ENCRYPTION_PGP
 976					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 977				fingerprint = "pgp";
 978			} else {
 979				fingerprint = message.getFingerprint();
 980			}
 981			intent.putExtra("fingerprint", fingerprint);
 982			startActivity(intent);
 983		});
 984		messageListAdapter.setOnContactPictureLongClicked(message -> {
 985			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 986				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 987					final MucOptions mucOptions = conversation.getMucOptions();
 988					if (!mucOptions.allowPm()) {
 989						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 990						return;
 991					}
 992					Jid user = message.getCounterpart();
 993					if (user != null && !user.isBareJid()) {
 994						if (mucOptions.isUserInRoom(user)) {
 995							privateMessageWith(user);
 996						} else {
 997							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 998						}
 999					}
1000				}
1001			} else {
1002				activity.showQrCode(conversation.getAccount().getShareableUri());
1003			}
1004		});
1005		messageListAdapter.setOnQuoteListener(this::quoteText);
1006		binding.messagesView.setAdapter(messageListAdapter);
1007
1008		registerForContextMenu(binding.messagesView);
1009
1010		return binding.getRoot();
1011	}
1012
1013	private void quoteText(String text) {
1014		if (binding.textinput.isEnabled()) {
1015			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
1016			Editable editable = binding.textinput.getEditableText();
1017			int position = binding.textinput.getSelectionEnd();
1018			if (position == -1) position = editable.length();
1019			if (position > 0 && editable.charAt(position - 1) != '\n') {
1020				editable.insert(position++, "\n");
1021			}
1022			editable.insert(position, text);
1023			position += text.length();
1024			editable.insert(position++, "\n");
1025			if (position < editable.length() && editable.charAt(position) != '\n') {
1026				editable.insert(position, "\n");
1027			}
1028			binding.textinput.setSelection(position);
1029			binding.textinput.requestFocus();
1030			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1031			if (inputMethodManager != null) {
1032				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1033			}
1034		}
1035	}
1036
1037	private void quoteMessage(Message message) {
1038		quoteText(MessageUtils.prepareQuote(message));
1039	}
1040
1041	@Override
1042	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1043		synchronized (this.messageList) {
1044			super.onCreateContextMenu(menu, v, menuInfo);
1045			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1046			this.selectedMessage = this.messageList.get(acmi.position);
1047			populateContextMenu(menu);
1048		}
1049	}
1050
1051	private void populateContextMenu(ContextMenu menu) {
1052		final Message m = this.selectedMessage;
1053		final Transferable t = m.getTransferable();
1054		Message relevantForCorrection = m;
1055		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1056			relevantForCorrection = relevantForCorrection.next();
1057		}
1058		if (m.getType() != Message.TYPE_STATUS) {
1059
1060			if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1061				return;
1062			}
1063
1064			final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1065			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1066					|| m.getEncryption() == Message.ENCRYPTION_PGP;
1067			final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1068			activity.getMenuInflater().inflate(R.menu.message_context, menu);
1069			menu.setHeaderTitle(R.string.message_options);
1070			MenuItem copyMessage = menu.findItem(R.id.copy_message);
1071			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1072			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1073			MenuItem correctMessage = menu.findItem(R.id.correct_message);
1074			MenuItem shareWith = menu.findItem(R.id.share_with);
1075			MenuItem sendAgain = menu.findItem(R.id.send_again);
1076			MenuItem copyUrl = menu.findItem(R.id.copy_url);
1077			MenuItem downloadFile = menu.findItem(R.id.download_file);
1078			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1079			MenuItem deleteFile = menu.findItem(R.id.delete_file);
1080			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1081			if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1082				copyMessage.setVisible(true);
1083				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
1084			}
1085			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1086				retryDecryption.setVisible(true);
1087			}
1088			if (relevantForCorrection.getType() == Message.TYPE_TEXT
1089					&& relevantForCorrection.isLastCorrectableMessage()
1090					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1091				correctMessage.setVisible(true);
1092			}
1093			if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1094				shareWith.setVisible(true);
1095			}
1096			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1097				sendAgain.setVisible(true);
1098			}
1099			if (m.hasFileOnRemoteHost()
1100					|| m.isGeoUri()
1101					|| m.treatAsDownloadable()
1102					|| (t != null && t instanceof HttpDownloadConnection)) {
1103				copyUrl.setVisible(true);
1104			}
1105			if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1106				downloadFile.setVisible(true);
1107				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1108			}
1109			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1110					|| m.getStatus() == Message.STATUS_UNSEND
1111					|| m.getStatus() == Message.STATUS_OFFERED;
1112			if ((t != null && !deleted) || waitingOfferedSending && m.needsUploading()) {
1113				cancelTransmission.setVisible(true);
1114			}
1115			if (m.isFileOrImage() && !deleted) {
1116				String path = m.getRelativeFilePath();
1117				if (path == null || !path.startsWith("/")) {
1118					deleteFile.setVisible(true);
1119					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1120				}
1121			}
1122			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1123				showErrorMessage.setVisible(true);
1124			}
1125		}
1126	}
1127
1128	@Override
1129	public boolean onContextItemSelected(MenuItem item) {
1130		switch (item.getItemId()) {
1131			case R.id.share_with:
1132				shareWith(selectedMessage);
1133				return true;
1134			case R.id.correct_message:
1135				correctMessage(selectedMessage);
1136				return true;
1137			case R.id.copy_message:
1138				copyMessage(selectedMessage);
1139				return true;
1140			case R.id.quote_message:
1141				quoteMessage(selectedMessage);
1142				return true;
1143			case R.id.send_again:
1144				resendMessage(selectedMessage);
1145				return true;
1146			case R.id.copy_url:
1147				copyUrl(selectedMessage);
1148				return true;
1149			case R.id.download_file:
1150				startDownloadable(selectedMessage);
1151				return true;
1152			case R.id.cancel_transmission:
1153				cancelTransmission(selectedMessage);
1154				return true;
1155			case R.id.retry_decryption:
1156				retryDecryption(selectedMessage);
1157				return true;
1158			case R.id.delete_file:
1159				deleteFile(selectedMessage);
1160				return true;
1161			case R.id.show_error_message:
1162				showErrorMessage(selectedMessage);
1163				return true;
1164			default:
1165				return super.onContextItemSelected(item);
1166		}
1167	}
1168
1169	@Override
1170	public boolean onOptionsItemSelected(final MenuItem item) {
1171		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1172			return false;
1173		} else if (conversation == null) {
1174			return super.onOptionsItemSelected(item);
1175		}
1176		switch (item.getItemId()) {
1177			case R.id.encryption_choice_axolotl:
1178			case R.id.encryption_choice_pgp:
1179			case R.id.encryption_choice_none:
1180				handleEncryptionSelection(item);
1181				break;
1182			case R.id.attach_choose_picture:
1183			case R.id.attach_take_picture:
1184			case R.id.attach_record_video:
1185			case R.id.attach_choose_file:
1186			case R.id.attach_record_voice:
1187			case R.id.attach_location:
1188				handleAttachmentSelection(item);
1189				break;
1190			case R.id.action_archive:
1191				activity.xmppConnectionService.archiveConversation(conversation);
1192				break;
1193			case R.id.action_contact_details:
1194				activity.switchToContactDetails(conversation.getContact());
1195				break;
1196			case R.id.action_muc_details:
1197				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1198				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1199				intent.putExtra("uuid", conversation.getUuid());
1200				startActivity(intent);
1201				break;
1202			case R.id.action_invite:
1203				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1204				break;
1205			case R.id.action_clear_history:
1206				clearHistoryDialog(conversation);
1207				break;
1208			case R.id.action_mute:
1209				muteConversationDialog(conversation);
1210				break;
1211			case R.id.action_unmute:
1212				unmuteConversation(conversation);
1213				break;
1214			case R.id.action_block:
1215			case R.id.action_unblock:
1216				final Activity activity = getActivity();
1217				if (activity instanceof XmppActivity) {
1218					BlockContactDialog.show((XmppActivity) activity, conversation);
1219				}
1220				break;
1221			default:
1222				break;
1223		}
1224		return super.onOptionsItemSelected(item);
1225	}
1226
1227	private void handleAttachmentSelection(MenuItem item) {
1228		switch (item.getItemId()) {
1229			case R.id.attach_choose_picture:
1230				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1231				break;
1232			case R.id.attach_take_picture:
1233				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1234				break;
1235			case R.id.attach_record_video:
1236				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1237				break;
1238			case R.id.attach_choose_file:
1239				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1240				break;
1241			case R.id.attach_record_voice:
1242				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1243				break;
1244			case R.id.attach_location:
1245				attachFile(ATTACHMENT_CHOICE_LOCATION);
1246				break;
1247		}
1248	}
1249
1250	private void handleEncryptionSelection(MenuItem item) {
1251		if (conversation == null) {
1252			return;
1253		}
1254		switch (item.getItemId()) {
1255			case R.id.encryption_choice_none:
1256				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1257				item.setChecked(true);
1258				break;
1259			case R.id.encryption_choice_pgp:
1260				if (activity.hasPgp()) {
1261					if (conversation.getAccount().getPgpSignature() != null) {
1262						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1263						item.setChecked(true);
1264					} else {
1265						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1266					}
1267				} else {
1268					activity.showInstallPgpDialog();
1269				}
1270				break;
1271			case R.id.encryption_choice_axolotl:
1272				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1273						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1274				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1275				item.setChecked(true);
1276				break;
1277			default:
1278				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1279				break;
1280		}
1281		activity.xmppConnectionService.updateConversation(conversation);
1282		updateChatMsgHint();
1283		getActivity().invalidateOptionsMenu();
1284		activity.refreshUi();
1285	}
1286
1287	public void attachFile(final int attachmentChoice) {
1288		if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1289			if (!hasStorageAndCameraPermission(attachmentChoice)) {
1290				return;
1291			}
1292		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1293			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1294				return;
1295			}
1296		}
1297		try {
1298			activity.getPreferences().edit()
1299					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1300					.apply();
1301		} catch (IllegalArgumentException e) {
1302			//just do not save
1303		}
1304		final int encryption = conversation.getNextEncryption();
1305		final int mode = conversation.getMode();
1306		if (encryption == Message.ENCRYPTION_PGP) {
1307			if (activity.hasPgp()) {
1308				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1309					activity.xmppConnectionService.getPgpEngine().hasKey(
1310							conversation.getContact(),
1311							new UiCallback<Contact>() {
1312
1313								@Override
1314								public void userInputRequried(PendingIntent pi, Contact contact) {
1315									startPendingIntent(pi, attachmentChoice);
1316								}
1317
1318								@Override
1319								public void success(Contact contact) {
1320									selectPresenceToAttachFile(attachmentChoice);
1321								}
1322
1323								@Override
1324								public void error(int error, Contact contact) {
1325									activity.replaceToast(getString(error));
1326								}
1327							});
1328				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1329					if (!conversation.getMucOptions().everybodyHasKeys()) {
1330						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1331						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1332						warning.show();
1333					}
1334					selectPresenceToAttachFile(attachmentChoice);
1335				} else {
1336					showNoPGPKeyDialog(false, (dialog, which) -> {
1337						conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1338						activity.xmppConnectionService.updateConversation(conversation);
1339						selectPresenceToAttachFile(attachmentChoice);
1340					});
1341				}
1342			} else {
1343				activity.showInstallPgpDialog();
1344			}
1345		} else {
1346			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1347				selectPresenceToAttachFile(attachmentChoice);
1348			}
1349		}
1350	}
1351
1352	@Override
1353	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1354		if (grantResults.length > 0)
1355			if (allGranted(grantResults)) {
1356				if (requestCode == REQUEST_START_DOWNLOAD) {
1357					if (this.mPendingDownloadableMessage != null) {
1358						startDownloadable(this.mPendingDownloadableMessage);
1359					}
1360				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1361					if (this.mPendingEditorContent != null) {
1362						attachImageToConversation(this.mPendingEditorContent);
1363					}
1364				} else {
1365					attachFile(requestCode);
1366				}
1367			} else {
1368				@StringRes int res;
1369				if (Manifest.permission.CAMERA.equals(getFirstDenied(grantResults, permissions))) {
1370					res = R.string.no_camera_permission;
1371				} else {
1372					res = R.string.no_storage_permission;
1373				}
1374				Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1375			}
1376	}
1377
1378	public void startDownloadable(Message message) {
1379		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1380			this.mPendingDownloadableMessage = message;
1381			return;
1382		}
1383		Transferable transferable = message.getTransferable();
1384		if (transferable != null) {
1385			if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1386				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1387				return;
1388			}
1389			if (!transferable.start()) {
1390				Log.d(Config.LOGTAG,"type: "+transferable.getClass().getName());
1391				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1392			}
1393		} else if (message.treatAsDownloadable()) {
1394			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1395		}
1396	}
1397
1398	@SuppressLint("InflateParams")
1399	protected void clearHistoryDialog(final Conversation conversation) {
1400		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1401		builder.setTitle(getString(R.string.clear_conversation_history));
1402		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1403		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1404		builder.setView(dialogView);
1405		builder.setNegativeButton(getString(R.string.cancel), null);
1406		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1407			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1408			if (endConversationCheckBox.isChecked()) {
1409				this.activity.xmppConnectionService.archiveConversation(conversation);
1410				this.activity.onConversationArchived(conversation);
1411			} else {
1412				activity.onConversationsListItemUpdated();
1413				refresh();
1414			}
1415		});
1416		builder.create().show();
1417	}
1418
1419	protected void muteConversationDialog(final Conversation conversation) {
1420		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1421		builder.setTitle(R.string.disable_notifications);
1422		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1423		final CharSequence[] labels = new CharSequence[durations.length];
1424		for (int i = 0; i < durations.length; ++i) {
1425			if (durations[i] == -1) {
1426				labels[i] = getString(R.string.until_further_notice);
1427			} else {
1428				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1429			}
1430		}
1431		builder.setItems(labels, (dialog, which) -> {
1432			final long till;
1433			if (durations[which] == -1) {
1434				till = Long.MAX_VALUE;
1435			} else {
1436				till = System.currentTimeMillis() + (durations[which] * 1000);
1437			}
1438			conversation.setMutedTill(till);
1439			activity.xmppConnectionService.updateConversation(conversation);
1440			activity.onConversationsListItemUpdated();
1441			refresh();
1442			getActivity().invalidateOptionsMenu();
1443		});
1444		builder.create().show();
1445	}
1446
1447	private boolean hasStoragePermission(int requestCode) {
1448		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1449			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1450				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1451				return false;
1452			} else {
1453				return true;
1454			}
1455		} else {
1456			return true;
1457		}
1458	}
1459
1460	private boolean hasStorageAndCameraPermission(int requestCode) {
1461		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1462			List<String> missingPermissions = new ArrayList<>();
1463			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1464				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1465			}
1466			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1467				missingPermissions.add(Manifest.permission.CAMERA);
1468			}
1469			if (missingPermissions.size() == 0) {
1470				return true;
1471			} else {
1472				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1473				return false;
1474			}
1475		} else {
1476			return true;
1477		}
1478	}
1479
1480	public void unmuteConversation(final Conversation conversation) {
1481		conversation.setMutedTill(0);
1482		this.activity.xmppConnectionService.updateConversation(conversation);
1483		this.activity.onConversationsListItemUpdated();
1484		refresh();
1485		getActivity().invalidateOptionsMenu();
1486	}
1487
1488	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1489		final Account account = conversation.getAccount();
1490		final PresenceSelector.OnPresenceSelected callback = () -> {
1491			Intent intent = new Intent();
1492			boolean chooser = false;
1493			String fallbackPackageId = null;
1494			switch (attachmentChoice) {
1495				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1496					intent.setAction(Intent.ACTION_GET_CONTENT);
1497					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1498					intent.setType("image/*");
1499					chooser = true;
1500					break;
1501				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1502					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1503					break;
1504				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1505					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1506					pendingTakePhotoUri.push(uri);
1507					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1508					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1509					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1510					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1511					break;
1512				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1513					chooser = true;
1514					intent.setType("*/*");
1515					intent.addCategory(Intent.CATEGORY_OPENABLE);
1516					intent.setAction(Intent.ACTION_GET_CONTENT);
1517					break;
1518				case ATTACHMENT_CHOICE_RECORD_VOICE:
1519					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1520					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1521					break;
1522				case ATTACHMENT_CHOICE_LOCATION:
1523					intent.setAction("eu.siacs.conversations.location.request");
1524					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1525					break;
1526			}
1527			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1528				if (chooser) {
1529					startActivityForResult(
1530							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1531							attachmentChoice);
1532				} else {
1533					startActivityForResult(intent, attachmentChoice);
1534				}
1535			} else if (fallbackPackageId != null) {
1536				startActivity(getInstallApkIntent(fallbackPackageId));
1537			}
1538		};
1539		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1540			conversation.setNextCounterpart(null);
1541			callback.onPresenceSelected();
1542		} else {
1543			activity.selectPresence(conversation, callback);
1544		}
1545	}
1546
1547	private Intent getInstallApkIntent(final String packageId) {
1548		Intent intent = new Intent(Intent.ACTION_VIEW);
1549		intent.setData(Uri.parse("market://details?id=" + packageId));
1550		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1551			return intent;
1552		} else {
1553			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1554			return intent;
1555		}
1556	}
1557
1558	@Override
1559	public void onResume() {
1560		new Handler().post(() -> {
1561			final Activity activity = getActivity();
1562			if (activity == null) {
1563				return;
1564			}
1565			final PackageManager packageManager = activity.getPackageManager();
1566			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1567			getActivity().invalidateOptionsMenu();
1568		});
1569		super.onResume();
1570		binding.messagesView.post(this::fireReadEvent);
1571	}
1572
1573	private void fireReadEvent() {
1574		if (activity != null && this.conversation != null) {
1575			String uuid = getLastVisibleMessageUuid();
1576			if (uuid != null) {
1577				activity.onConversationRead(this.conversation, uuid);
1578			}
1579		}
1580	}
1581
1582	private String getLastVisibleMessageUuid() {
1583		if (binding == null) {
1584			return null;
1585		}
1586		synchronized (this.messageList) {
1587			int pos = binding.messagesView.getLastVisiblePosition();
1588			if (pos >= 0) {
1589				Message message = null;
1590				for (int i = pos; i >= 0; --i) {
1591					try {
1592						message = (Message) binding.messagesView.getItemAtPosition(i);
1593					} catch (IndexOutOfBoundsException e) {
1594						//should not happen if we synchronize properly. however if that fails we just gonna try item -1
1595						continue;
1596					}
1597					if (message.getType() != Message.TYPE_STATUS) {
1598						break;
1599					}
1600				}
1601				if (message != null) {
1602					while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1603						message = message.next();
1604					}
1605					return message.getUuid();
1606				}
1607			}
1608		}
1609		return null;
1610	}
1611
1612	private void showErrorMessage(final Message message) {
1613		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1614		builder.setTitle(R.string.error_message);
1615		builder.setMessage(message.getErrorMessage());
1616		builder.setPositiveButton(R.string.confirm, null);
1617		builder.create().show();
1618	}
1619
1620	private void shareWith(Message message) {
1621		Intent shareIntent = new Intent();
1622		shareIntent.setAction(Intent.ACTION_SEND);
1623		if (message.isGeoUri()) {
1624			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1625			shareIntent.setType("text/plain");
1626		} else if (!message.isFileOrImage()) {
1627			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1628			shareIntent.setType("text/plain");
1629		} else {
1630			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1631			try {
1632				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1633			} catch (SecurityException e) {
1634				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1635				return;
1636			}
1637			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1638			String mime = message.getMimeType();
1639			if (mime == null) {
1640				mime = "*/*";
1641			}
1642			shareIntent.setType(mime);
1643		}
1644		try {
1645			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1646		} catch (ActivityNotFoundException e) {
1647			//This should happen only on faulty androids because normally chooser is always available
1648			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1649		}
1650	}
1651
1652	private void copyMessage(Message message) {
1653		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1654			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1655		}
1656	}
1657
1658	private void deleteFile(Message message) {
1659		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1660			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1661			activity.onConversationsListItemUpdated();
1662			refresh();
1663		}
1664	}
1665
1666	private void resendMessage(final Message message) {
1667		if (message.isFileOrImage()) {
1668			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1669			if (file.exists()) {
1670				final Conversation conversation = message.getConversation();
1671				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1672				if (!message.hasFileOnRemoteHost()
1673						&& xmppConnection != null
1674						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1675					activity.selectPresence(conversation, () -> {
1676						message.setCounterpart(conversation.getNextCounterpart());
1677						activity.xmppConnectionService.resendFailedMessages(message);
1678						new Handler().post(() -> {
1679							int size = messageList.size();
1680							this.binding.messagesView.setSelection(size - 1);
1681						});
1682					});
1683					return;
1684				}
1685			} else {
1686				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1687				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1688				activity.onConversationsListItemUpdated();
1689				refresh();
1690				return;
1691			}
1692		}
1693		activity.xmppConnectionService.resendFailedMessages(message);
1694		new Handler().post(() -> {
1695			int size = messageList.size();
1696			this.binding.messagesView.setSelection(size - 1);
1697		});
1698	}
1699
1700	private void copyUrl(Message message) {
1701		final String url;
1702		final int resId;
1703		if (message.isGeoUri()) {
1704			resId = R.string.location;
1705			url = message.getBody();
1706		} else if (message.hasFileOnRemoteHost()) {
1707			resId = R.string.file_url;
1708			url = message.getFileParams().url.toString();
1709		} else {
1710			url = message.getBody().trim();
1711			resId = R.string.file_url;
1712		}
1713		if (activity.copyTextToClipboard(url, resId)) {
1714			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1715		}
1716	}
1717
1718	private void cancelTransmission(Message message) {
1719		Transferable transferable = message.getTransferable();
1720		if (transferable != null) {
1721			transferable.cancel();
1722		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1723			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1724		}
1725	}
1726
1727	private void retryDecryption(Message message) {
1728		message.setEncryption(Message.ENCRYPTION_PGP);
1729		activity.onConversationsListItemUpdated();
1730		refresh();
1731		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1732	}
1733
1734	private void privateMessageWith(final Jid counterpart) {
1735		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1736			activity.xmppConnectionService.sendChatState(conversation);
1737		}
1738		this.binding.textinput.setText("");
1739		this.conversation.setNextCounterpart(counterpart);
1740		updateChatMsgHint();
1741		updateSendButton();
1742		updateEditablity();
1743	}
1744
1745	private void correctMessage(Message message) {
1746		while (message.mergeable(message.next())) {
1747			message = message.next();
1748		}
1749		this.conversation.setCorrectingMessage(message);
1750		final Editable editable = binding.textinput.getText();
1751		this.conversation.setDraftMessage(editable.toString());
1752		this.binding.textinput.setText("");
1753		this.binding.textinput.append(message.getBody());
1754
1755	}
1756
1757	private void highlightInConference(String nick) {
1758		final Editable editable = this.binding.textinput.getText();
1759		String oldString = editable.toString().trim();
1760		final int pos = this.binding.textinput.getSelectionStart();
1761		if (oldString.isEmpty() || pos == 0) {
1762			editable.insert(0, nick + ": ");
1763		} else {
1764			final char before = editable.charAt(pos - 1);
1765			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1766			if (before == '\n') {
1767				editable.insert(pos, nick + ": ");
1768			} else {
1769				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1770					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1771						editable.insert(pos - 2, ", " + nick);
1772						return;
1773					}
1774				}
1775				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1776				if (Character.isWhitespace(after)) {
1777					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1778				}
1779			}
1780		}
1781	}
1782
1783	@Override
1784	public void onSaveInstanceState(Bundle outState) {
1785		super.onSaveInstanceState(outState);
1786		if (conversation != null) {
1787			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1788			outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1789			final Uri uri = pendingTakePhotoUri.peek();
1790			if (uri != null) {
1791				outState.putString(STATE_PHOTO_URI, uri.toString());
1792			}
1793			final ScrollState scrollState = getScrollPosition();
1794			if (scrollState != null) {
1795				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1796			}
1797		}
1798	}
1799
1800	@Override
1801	public void onActivityCreated(Bundle savedInstanceState) {
1802		super.onActivityCreated(savedInstanceState);
1803		if (savedInstanceState == null) {
1804			return;
1805		}
1806		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1807		pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1808		if (uuid != null) {
1809			QuickLoader.set(uuid);
1810			this.pendingConversationsUuid.push(uuid);
1811			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1812			if (takePhotoUri != null) {
1813				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1814			}
1815			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1816		}
1817	}
1818
1819	@Override
1820	public void onStart() {
1821		super.onStart();
1822		if (this.reInitRequiredOnStart && this.conversation != null) {
1823			final Bundle extras = pendingExtras.pop();
1824			reInit(this.conversation, extras != null);
1825			if (extras != null) {
1826				processExtras(extras);
1827			}
1828		} else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1829			final String uuid = pendingConversationsUuid.pop();
1830			Log.d(Config.LOGTAG,"ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="+uuid);
1831			if (uuid != null) {
1832				findAndReInitByUuidOrArchive(uuid);
1833			}
1834		}
1835	}
1836
1837	@Override
1838	public void onStop() {
1839		super.onStop();
1840		final Activity activity = getActivity();
1841		if (activity == null || !activity.isChangingConfigurations()) {
1842			hideSoftKeyboard(activity);
1843			messageListAdapter.stopAudioPlayer();
1844		}
1845		if (this.conversation != null) {
1846			final String msg = this.binding.textinput.getText().toString();
1847			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1848				this.activity.xmppConnectionService.updateConversation(this.conversation);
1849			}
1850			updateChatState(this.conversation, msg);
1851			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1852		}
1853		this.reInitRequiredOnStart = true;
1854	}
1855
1856	private void updateChatState(final Conversation conversation, final String msg) {
1857		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1858		Account.State status = conversation.getAccount().getStatus();
1859		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1860			activity.xmppConnectionService.sendChatState(conversation);
1861		}
1862	}
1863
1864	private void saveMessageDraftStopAudioPlayer() {
1865		final Conversation previousConversation = this.conversation;
1866		if (this.activity == null || this.binding == null || previousConversation == null) {
1867			return;
1868		}
1869		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1870		final String msg = this.binding.textinput.getText().toString();
1871		if (previousConversation.setNextMessage(msg)) {
1872			activity.xmppConnectionService.updateConversation(previousConversation);
1873		}
1874		updateChatState(this.conversation, msg);
1875		messageListAdapter.stopAudioPlayer();
1876	}
1877
1878	public void reInit(Conversation conversation, Bundle extras) {
1879		QuickLoader.set(conversation.getUuid());
1880		this.saveMessageDraftStopAudioPlayer();
1881		if (this.reInit(conversation, extras != null)) {
1882			if (extras != null) {
1883				processExtras(extras);
1884			}
1885			this.reInitRequiredOnStart = false;
1886		} else {
1887			this.reInitRequiredOnStart = true;
1888			pendingExtras.push(extras);
1889		}
1890		resetUnreadMessagesCount();
1891	}
1892
1893	private void reInit(Conversation conversation) {
1894		reInit(conversation, false);
1895	}
1896
1897	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1898		if (conversation == null) {
1899			return false;
1900		}
1901		this.conversation = conversation;
1902		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1903		if (this.activity == null || this.binding == null) {
1904			return false;
1905		}
1906
1907		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1908			activity.onConversationArchived(this.conversation);
1909			return false;
1910		}
1911
1912		stopScrolling();
1913		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1914
1915		if (this.conversation.isRead() && hasExtras) {
1916			Log.d(Config.LOGTAG, "trimming conversation");
1917			this.conversation.trim();
1918		}
1919
1920		setupIme();
1921
1922		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1923
1924		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1925		this.binding.textinput.setKeyboardListener(null);
1926		this.binding.textinput.setText("");
1927		this.binding.textinput.append(this.conversation.getNextMessage());
1928		this.binding.textinput.setKeyboardListener(this);
1929		messageListAdapter.updatePreferences();
1930		refresh(false);
1931		this.conversation.messagesLoaded.set(true);
1932		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1933
1934		if (hasExtras || scrolledToBottomAndNoPending) {
1935			resetUnreadMessagesCount();
1936			synchronized (this.messageList) {
1937				Log.d(Config.LOGTAG, "jump to first unread message");
1938				final Message first = conversation.getFirstUnreadMessage();
1939				final int bottom = Math.max(0, this.messageList.size() - 1);
1940				final int pos;
1941				if (first == null) {
1942					pos = bottom;
1943				} else {
1944					int i = getIndexOf(first.getUuid(), this.messageList);
1945					pos = i < 0 ? bottom : i;
1946				}
1947				setSelection(pos);
1948			}
1949		}
1950
1951
1952		this.binding.messagesView.post(this::fireReadEvent);
1953		//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
1954		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1955		return true;
1956	}
1957
1958	private void resetUnreadMessagesCount() {
1959		lastMessageUuid = null;
1960		hideUnreadMessagesCount();
1961	}
1962
1963	private void hideUnreadMessagesCount() {
1964		if (this.binding == null) {
1965			return;
1966		}
1967		this.binding.scrollToBottomButton.setEnabled(false);
1968		this.binding.scrollToBottomButton.setVisibility(View.GONE);
1969		this.binding.unreadCountCustomView.setVisibility(View.GONE);
1970	}
1971
1972	private void setSelection(int pos) {
1973		this.binding.messagesView.setSelection(pos);
1974		this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
1975		this.binding.messagesView.post(this::fireReadEvent);
1976	}
1977
1978	private boolean scrolledToBottom() {
1979		if (this.binding == null) {
1980			return false;
1981		}
1982		return scrolledToBottom(this.binding.messagesView);
1983	}
1984
1985	private void processExtras(Bundle extras) {
1986		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1987		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1988		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1989		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1990		if (nick != null) {
1991			if (pm) {
1992				Jid jid = conversation.getJid();
1993				try {
1994					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1995					privateMessageWith(next);
1996				} catch (final IllegalArgumentException ignored) {
1997					//do nothing
1998				}
1999			} else {
2000				final MucOptions mucOptions = conversation.getMucOptions();
2001				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2002					highlightInConference(nick);
2003				}
2004			}
2005		} else {
2006			appendText(text);
2007		}
2008		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2009		if (message != null) {
2010			startDownloadable(message);
2011		}
2012	}
2013
2014	private boolean showBlockSubmenu(View view) {
2015		final Jid jid = conversation.getJid();
2016		if (jid.getLocal() == null) {
2017			BlockContactDialog.show(activity, conversation);
2018		} else {
2019			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2020			popupMenu.inflate(R.menu.block);
2021			popupMenu.setOnMenuItemClickListener(menuItem -> {
2022				Blockable blockable;
2023				switch (menuItem.getItemId()) {
2024					case R.id.block_domain:
2025						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2026						break;
2027					default:
2028						blockable = conversation;
2029				}
2030				BlockContactDialog.show(activity, blockable);
2031				return true;
2032			});
2033			popupMenu.show();
2034		}
2035		return true;
2036	}
2037
2038	private void updateSnackBar(final Conversation conversation) {
2039		final Account account = conversation.getAccount();
2040		final XmppConnection connection = account.getXmppConnection();
2041		final int mode = conversation.getMode();
2042		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2043		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2044			return;
2045		}
2046		if (account.getStatus() == Account.State.DISABLED) {
2047			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2048		} else if (conversation.isBlocked()) {
2049			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2050		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2051			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2052		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2053			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2054		} else if (mode == Conversation.MODE_MULTI
2055				&& !conversation.getMucOptions().online()
2056				&& account.getStatus() == Account.State.ONLINE) {
2057			switch (conversation.getMucOptions().getError()) {
2058				case NICK_IN_USE:
2059					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2060					break;
2061				case NO_RESPONSE:
2062					showSnackbar(R.string.joining_conference, 0, null);
2063					break;
2064				case SERVER_NOT_FOUND:
2065					if (conversation.receivedMessagesCount() > 0) {
2066						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2067					} else {
2068						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2069					}
2070					break;
2071				case PASSWORD_REQUIRED:
2072					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2073					break;
2074				case BANNED:
2075					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2076					break;
2077				case MEMBERS_ONLY:
2078					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2079					break;
2080				case KICKED:
2081					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2082					break;
2083				case UNKNOWN:
2084					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2085					break;
2086				case INVALID_NICK:
2087					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2088				case SHUTDOWN:
2089					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2090					break;
2091				default:
2092					hideSnackbar();
2093					break;
2094			}
2095		} else if (account.hasPendingPgpIntent(conversation)) {
2096			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2097		} else if (connection != null
2098				&& connection.getFeatures().blocking()
2099				&& conversation.countMessages() != 0
2100				&& !conversation.isBlocked()
2101				&& conversation.isWithStranger()) {
2102			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2103		} else {
2104			hideSnackbar();
2105		}
2106	}
2107
2108	@Override
2109	public void refresh() {
2110		if (this.binding == null) {
2111			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2112			return;
2113		}
2114		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2115			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2116				activity.onConversationArchived(this.conversation);
2117				return;
2118			}
2119		}
2120		this.refresh(true);
2121	}
2122
2123	private void refresh(boolean notifyConversationRead) {
2124		synchronized (this.messageList) {
2125			if (this.conversation != null) {
2126				conversation.populateWithMessages(this.messageList);
2127				updateSnackBar(conversation);
2128				updateStatusMessages();
2129				if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2130					binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2131					binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2132				}
2133				this.messageListAdapter.notifyDataSetChanged();
2134				updateChatMsgHint();
2135				if (notifyConversationRead && activity != null) {
2136					binding.messagesView.post(this::fireReadEvent);
2137				}
2138				updateSendButton();
2139				updateEditablity();
2140			}
2141		}
2142	}
2143
2144	protected void messageSent() {
2145		mSendingPgpMessage.set(false);
2146		this.binding.textinput.setText("");
2147		if (conversation.setCorrectingMessage(null)) {
2148			this.binding.textinput.append(conversation.getDraftMessage());
2149			conversation.setDraftMessage(null);
2150		}
2151		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2152			activity.xmppConnectionService.updateConversation(conversation);
2153		}
2154		updateChatMsgHint();
2155		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2156		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2157		if (prefScrollToBottom || scrolledToBottom()) {
2158			new Handler().post(() -> {
2159				int size = messageList.size();
2160				this.binding.messagesView.setSelection(size - 1);
2161			});
2162		}
2163	}
2164
2165	public void doneSendingPgpMessage() {
2166		mSendingPgpMessage.set(false);
2167	}
2168
2169	public long getMaxHttpUploadSize(Conversation conversation) {
2170		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2171		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2172	}
2173
2174	private void updateEditablity() {
2175		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2176		this.binding.textinput.setFocusable(canWrite);
2177		this.binding.textinput.setFocusableInTouchMode(canWrite);
2178		this.binding.textSendButton.setEnabled(canWrite);
2179		this.binding.textinput.setCursorVisible(canWrite);
2180	}
2181
2182	public void updateSendButton() {
2183		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2184		final Conversation c = this.conversation;
2185		final Presence.Status status;
2186		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2187		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2188		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2189			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2190				status = Presence.Status.OFFLINE;
2191			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2192				status = c.getContact().getShownStatus();
2193			} else {
2194				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2195			}
2196		} else {
2197			status = Presence.Status.OFFLINE;
2198		}
2199		this.binding.textSendButton.setTag(action);
2200		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2201	}
2202
2203	protected void updateDateSeparators() {
2204		synchronized (this.messageList) {
2205			for (int i = 0; i < this.messageList.size(); ++i) {
2206				final Message current = this.messageList.get(i);
2207				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2208					this.messageList.add(i, Message.createDateSeparator(current));
2209					i++;
2210				}
2211			}
2212		}
2213	}
2214
2215	protected void updateStatusMessages() {
2216		updateDateSeparators();
2217		synchronized (this.messageList) {
2218			if (showLoadMoreMessages(conversation)) {
2219				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2220			}
2221			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2222				ChatState state = conversation.getIncomingChatState();
2223				if (state == ChatState.COMPOSING) {
2224					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2225				} else if (state == ChatState.PAUSED) {
2226					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2227				} else {
2228					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2229						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2230							return;
2231						} else {
2232							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2233								this.messageList.add(i + 1,
2234										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2235								return;
2236							}
2237						}
2238					}
2239				}
2240			} else {
2241				final MucOptions mucOptions = conversation.getMucOptions();
2242				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2243				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2244				ChatState state = ChatState.COMPOSING;
2245				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2246				if (users.size() == 0) {
2247					state = ChatState.PAUSED;
2248					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2249				}
2250				if (mucOptions.isPrivateAndNonAnonymous()) {
2251					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2252						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2253						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2254						for (ReadByMarker marker : markersForMessage) {
2255							if (!ReadByMarker.contains(marker, addedMarkers)) {
2256								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2257								MucOptions.User user = mucOptions.findUser(marker);
2258								if (user != null && !users.contains(user)) {
2259									shownMarkers.add(user);
2260								}
2261							}
2262						}
2263						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2264						final Message statusMessage;
2265						final int size = shownMarkers.size();
2266						if (size > 1) {
2267							final String body;
2268							if (size <= 4) {
2269								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2270							} else {
2271								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2272							}
2273							statusMessage = Message.createStatusMessage(conversation, body);
2274							statusMessage.setCounterparts(shownMarkers);
2275						} else if (size == 1) {
2276							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2277							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2278							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2279						} else {
2280							statusMessage = null;
2281						}
2282						if (statusMessage != null) {
2283							this.messageList.add(i + 1, statusMessage);
2284						}
2285						addedMarkers.add(markerForSender);
2286						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2287							break;
2288						}
2289					}
2290				}
2291				if (users.size() > 0) {
2292					Message statusMessage;
2293					if (users.size() == 1) {
2294						MucOptions.User user = users.get(0);
2295						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2296						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2297						statusMessage.setTrueCounterpart(user.getRealJid());
2298						statusMessage.setCounterpart(user.getFullJid());
2299					} else {
2300						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2301						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2302						statusMessage.setCounterparts(users);
2303					}
2304					this.messageList.add(statusMessage);
2305				}
2306
2307			}
2308		}
2309	}
2310
2311	private void stopScrolling() {
2312		long now = SystemClock.uptimeMillis();
2313		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2314		binding.messagesView.dispatchTouchEvent(cancel);
2315	}
2316
2317	private boolean showLoadMoreMessages(final Conversation c) {
2318		if (activity == null || activity.xmppConnectionService == null) {
2319			return false;
2320		}
2321		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2322		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2323		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2324	}
2325
2326	private boolean hasMamSupport(final Conversation c) {
2327		if (c.getMode() == Conversation.MODE_SINGLE) {
2328			final XmppConnection connection = c.getAccount().getXmppConnection();
2329			return connection != null && connection.getFeatures().mam();
2330		} else {
2331			return c.getMucOptions().mamSupport();
2332		}
2333	}
2334
2335	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2336		showSnackbar(message, action, clickListener, null);
2337	}
2338
2339	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2340		this.binding.snackbar.setVisibility(View.VISIBLE);
2341		this.binding.snackbar.setOnClickListener(null);
2342		this.binding.snackbarMessage.setText(message);
2343		this.binding.snackbarMessage.setOnClickListener(null);
2344		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2345		if (action != 0) {
2346			this.binding.snackbarAction.setText(action);
2347		}
2348		this.binding.snackbarAction.setOnClickListener(clickListener);
2349		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2350	}
2351
2352	protected void hideSnackbar() {
2353		this.binding.snackbar.setVisibility(View.GONE);
2354	}
2355
2356	protected void sendMessage(Message message) {
2357		activity.xmppConnectionService.sendMessage(message);
2358		messageSent();
2359	}
2360
2361	protected void sendPgpMessage(final Message message) {
2362		final XmppConnectionService xmppService = activity.xmppConnectionService;
2363		final Contact contact = message.getConversation().getContact();
2364		if (!activity.hasPgp()) {
2365			activity.showInstallPgpDialog();
2366			return;
2367		}
2368		if (conversation.getAccount().getPgpSignature() == null) {
2369			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2370			return;
2371		}
2372		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2373			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2374		}
2375		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2376			if (contact.getPgpKeyId() != 0) {
2377				xmppService.getPgpEngine().hasKey(contact,
2378						new UiCallback<Contact>() {
2379
2380							@Override
2381							public void userInputRequried(PendingIntent pi, Contact contact) {
2382								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2383							}
2384
2385							@Override
2386							public void success(Contact contact) {
2387								encryptTextMessage(message);
2388							}
2389
2390							@Override
2391							public void error(int error, Contact contact) {
2392								activity.runOnUiThread(() -> Toast.makeText(activity,
2393										R.string.unable_to_connect_to_keychain,
2394										Toast.LENGTH_SHORT
2395								).show());
2396								mSendingPgpMessage.set(false);
2397							}
2398						});
2399
2400			} else {
2401				showNoPGPKeyDialog(false, (dialog, which) -> {
2402					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2403					xmppService.updateConversation(conversation);
2404					message.setEncryption(Message.ENCRYPTION_NONE);
2405					xmppService.sendMessage(message);
2406					messageSent();
2407				});
2408			}
2409		} else {
2410			if (conversation.getMucOptions().pgpKeysInUse()) {
2411				if (!conversation.getMucOptions().everybodyHasKeys()) {
2412					Toast warning = Toast
2413							.makeText(getActivity(),
2414									R.string.missing_public_keys,
2415									Toast.LENGTH_LONG);
2416					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2417					warning.show();
2418				}
2419				encryptTextMessage(message);
2420			} else {
2421				showNoPGPKeyDialog(true, (dialog, which) -> {
2422					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2423					message.setEncryption(Message.ENCRYPTION_NONE);
2424					xmppService.updateConversation(conversation);
2425					xmppService.sendMessage(message);
2426					messageSent();
2427				});
2428			}
2429		}
2430	}
2431
2432	public void encryptTextMessage(Message message) {
2433		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2434				new UiCallback<Message>() {
2435
2436					@Override
2437					public void userInputRequried(PendingIntent pi, Message message) {
2438						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2439					}
2440
2441					@Override
2442					public void success(Message message) {
2443						//TODO the following two call can be made before the callback
2444						getActivity().runOnUiThread(() -> messageSent());
2445					}
2446
2447					@Override
2448					public void error(final int error, Message message) {
2449						getActivity().runOnUiThread(() -> {
2450							doneSendingPgpMessage();
2451							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2452						});
2453
2454					}
2455				});
2456	}
2457
2458	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2459		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2460		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2461		if (plural) {
2462			builder.setTitle(getString(R.string.no_pgp_keys));
2463			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2464		} else {
2465			builder.setTitle(getString(R.string.no_pgp_key));
2466			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2467		}
2468		builder.setNegativeButton(getString(R.string.cancel), null);
2469		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2470		builder.create().show();
2471	}
2472
2473	public void appendText(String text) {
2474		if (text == null) {
2475			return;
2476		}
2477		String previous = this.binding.textinput.getText().toString();
2478		if (previous.length() != 0 && !previous.endsWith(" ")) {
2479			text = " " + text;
2480		}
2481		this.binding.textinput.append(text);
2482	}
2483
2484	@Override
2485	public boolean onEnterPressed() {
2486		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2487		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2488		if (enterIsSend) {
2489			sendMessage();
2490			return true;
2491		} else {
2492			return false;
2493		}
2494	}
2495
2496	@Override
2497	public void onTypingStarted() {
2498		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2499		if (service == null) {
2500			return;
2501		}
2502		Account.State status = conversation.getAccount().getStatus();
2503		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2504			service.sendChatState(conversation);
2505		}
2506		updateSendButton();
2507	}
2508
2509	@Override
2510	public void onTypingStopped() {
2511		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2512		if (service == null) {
2513			return;
2514		}
2515		Account.State status = conversation.getAccount().getStatus();
2516		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2517			service.sendChatState(conversation);
2518		}
2519	}
2520
2521	@Override
2522	public void onTextDeleted() {
2523		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2524		if (service == null) {
2525			return;
2526		}
2527		Account.State status = conversation.getAccount().getStatus();
2528		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2529			service.sendChatState(conversation);
2530		}
2531		updateSendButton();
2532	}
2533
2534	@Override
2535	public void onTextChanged() {
2536		if (conversation != null && conversation.getCorrectingMessage() != null) {
2537			updateSendButton();
2538		}
2539	}
2540
2541	@Override
2542	public boolean onTabPressed(boolean repeated) {
2543		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2544			return false;
2545		}
2546		if (repeated) {
2547			completionIndex++;
2548		} else {
2549			lastCompletionLength = 0;
2550			completionIndex = 0;
2551			final String content = this.binding.textinput.getText().toString();
2552			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2553			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2554			firstWord = start == 0;
2555			incomplete = content.substring(start, lastCompletionCursor);
2556		}
2557		List<String> completions = new ArrayList<>();
2558		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2559			String name = user.getName();
2560			if (name != null && name.startsWith(incomplete)) {
2561				completions.add(name + (firstWord ? ": " : " "));
2562			}
2563		}
2564		Collections.sort(completions);
2565		if (completions.size() > completionIndex) {
2566			String completion = completions.get(completionIndex).substring(incomplete.length());
2567			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2568			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2569			lastCompletionLength = completion.length();
2570		} else {
2571			completionIndex = -1;
2572			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2573			lastCompletionLength = 0;
2574		}
2575		return true;
2576	}
2577
2578	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2579		try {
2580			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2581		} catch (final SendIntentException ignored) {
2582		}
2583	}
2584
2585	@Override
2586	public void onBackendConnected() {
2587		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2588		String uuid = pendingConversationsUuid.pop();
2589		if (uuid != null) {
2590			if (!findAndReInitByUuidOrArchive(uuid)) {
2591				return;
2592			}
2593		} else {
2594			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2595				clearPending();
2596				activity.onConversationArchived(conversation);
2597				return;
2598			}
2599		}
2600		ActivityResult activityResult = postponedActivityResult.pop();
2601		if (activityResult != null) {
2602			handleActivityResult(activityResult);
2603		}
2604		clearPending();
2605	}
2606
2607	private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2608		Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2609		if (conversation == null) {
2610			clearPending();
2611			activity.onConversationArchived(null);
2612			return false;
2613		}
2614		reInit(conversation);
2615		ScrollState scrollState = pendingScrollState.pop();
2616		String lastMessageUuid = pendingLastMessageUuid.pop();
2617		if (scrollState != null) {
2618			setScrollPosition(scrollState, lastMessageUuid);
2619		}
2620		return true;
2621	}
2622
2623	private void clearPending() {
2624		if (postponedActivityResult.pop() != null) {
2625			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2626		}
2627		pendingScrollState.pop();
2628		if (pendingTakePhotoUri.pop() != null) {
2629			Log.e(Config.LOGTAG, "cleared pending photo uri");
2630		}
2631	}
2632
2633	public Conversation getConversation() {
2634		return conversation;
2635	}
2636}