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.MessageUtils;
  96import eu.siacs.conversations.utils.NickValidityChecker;
  97import eu.siacs.conversations.utils.QuickLoader;
  98import eu.siacs.conversations.utils.StylingHelper;
  99import eu.siacs.conversations.utils.TimeframeUtils;
 100import eu.siacs.conversations.utils.UIHelper;
 101import eu.siacs.conversations.xmpp.XmppConnection;
 102import eu.siacs.conversations.xmpp.chatstate.ChatState;
 103import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 104import rocks.xmpp.addr.Jid;
 105
 106import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 107import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 108
 109
 110public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 111
 112
 113	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 114	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 115	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 116	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 117	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 118	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 119	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 120	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 121	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 122	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 123	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 124	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 125	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 126	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 127
 128	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 129	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 130	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 131	public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 132	private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 133
 134	private final List<Message> messageList = new ArrayList<>();
 135	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 136	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 137	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 138	private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 139	private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 140	private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 141	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 142	public Uri mPendingEditorContent = null;
 143	protected MessageAdapter messageListAdapter;
 144	private String lastMessageUuid = null;
 145	private Conversation conversation;
 146	private FragmentConversationBinding binding;
 147	private Toast messageLoaderToast;
 148	private ConversationsActivity activity;
 149	private boolean reInitRequiredOnStart = true;
 150	private OnClickListener clickToMuc = new OnClickListener() {
 151
 152		@Override
 153		public void onClick(View v) {
 154			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 155			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 156			intent.putExtra("uuid", conversation.getUuid());
 157			startActivity(intent);
 158		}
 159	};
 160	private OnClickListener leaveMuc = new OnClickListener() {
 161
 162		@Override
 163		public void onClick(View v) {
 164			activity.xmppConnectionService.archiveConversation(conversation);
 165		}
 166	};
 167	private OnClickListener joinMuc = new OnClickListener() {
 168
 169		@Override
 170		public void onClick(View v) {
 171			activity.xmppConnectionService.joinMuc(conversation);
 172		}
 173	};
 174	private OnClickListener enterPassword = new OnClickListener() {
 175
 176		@Override
 177		public void onClick(View v) {
 178			MucOptions muc = conversation.getMucOptions();
 179			String password = muc.getPassword();
 180			if (password == null) {
 181				password = "";
 182			}
 183			activity.quickPasswordEdit(password, value -> {
 184				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 185				return null;
 186			});
 187		}
 188	};
 189	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 190
 191		@Override
 192		public void onScrollStateChanged(AbsListView view, int scrollState) {
 193			if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 194				fireReadEvent();
 195			}
 196		}
 197
 198		@Override
 199		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 200			toggleScrollDownButton(view);
 201			synchronized (ConversationFragment.this.messageList) {
 202				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 203					long timestamp;
 204					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 205						timestamp = messageList.get(1).getTimeSent();
 206					} else {
 207						timestamp = messageList.get(0).getTimeSent();
 208					}
 209					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 210						@Override
 211						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 212							if (ConversationFragment.this.conversation != conversation) {
 213								conversation.messagesLoaded.set(true);
 214								return;
 215							}
 216							runOnUiThread(() -> {
 217								synchronized (messageList) {
 218									final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 219									Message message = null;
 220									int childPos;
 221									for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 222										message = messageList.get(oldPosition + childPos);
 223										if (message.getType() != Message.TYPE_STATUS) {
 224											break;
 225										}
 226									}
 227									final String uuid = message != null ? message.getUuid() : null;
 228									View v = binding.messagesView.getChildAt(childPos);
 229									final int pxOffset = (v == null) ? 0 : v.getTop();
 230									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 231									try {
 232										updateStatusMessages();
 233									} catch (IllegalStateException e) {
 234										Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 235									}
 236									messageListAdapter.notifyDataSetChanged();
 237									int pos = Math.max(getIndexOf(uuid, messageList), 0);
 238									binding.messagesView.setSelectionFromTop(pos, pxOffset);
 239									if (messageLoaderToast != null) {
 240										messageLoaderToast.cancel();
 241									}
 242									conversation.messagesLoaded.set(true);
 243								}
 244							});
 245						}
 246
 247						@Override
 248						public void informUser(final int resId) {
 249
 250							runOnUiThread(() -> {
 251								if (messageLoaderToast != null) {
 252									messageLoaderToast.cancel();
 253								}
 254								if (ConversationFragment.this.conversation != conversation) {
 255									return;
 256								}
 257								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 258								messageLoaderToast.show();
 259							});
 260
 261						}
 262					});
 263
 264				}
 265			}
 266		}
 267	};
 268	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 269		@Override
 270		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 271			// try to get permission to read the image, if applicable
 272			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 273				try {
 274					inputContentInfo.requestPermission();
 275				} catch (Exception e) {
 276					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 277					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 278					).show();
 279					return false;
 280				}
 281			}
 282			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 283				attachImageToConversation(inputContentInfo.getContentUri());
 284			} else {
 285				mPendingEditorContent = inputContentInfo.getContentUri();
 286			}
 287			return true;
 288		}
 289	};
 290	private Message selectedMessage;
 291	private OnClickListener mEnableAccountListener = new OnClickListener() {
 292		@Override
 293		public void onClick(View v) {
 294			final Account account = conversation == null ? null : conversation.getAccount();
 295			if (account != null) {
 296				account.setOption(Account.OPTION_DISABLED, false);
 297				activity.xmppConnectionService.updateAccount(account);
 298			}
 299		}
 300	};
 301	private OnClickListener mUnblockClickListener = new OnClickListener() {
 302		@Override
 303		public void onClick(final View v) {
 304			v.post(() -> v.setVisibility(View.INVISIBLE));
 305			if (conversation.isDomainBlocked()) {
 306				BlockContactDialog.show(activity, conversation);
 307			} else {
 308				unblockConversation(conversation);
 309			}
 310		}
 311	};
 312	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 313	private OnClickListener mAddBackClickListener = new OnClickListener() {
 314
 315		@Override
 316		public void onClick(View v) {
 317			final Contact contact = conversation == null ? null : conversation.getContact();
 318			if (contact != null) {
 319				activity.xmppConnectionService.createContact(contact, true);
 320				activity.switchToContactDetails(contact);
 321			}
 322		}
 323	};
 324	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 325	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 326		@Override
 327		public void onClick(View v) {
 328			final Contact contact = conversation == null ? null : conversation.getContact();
 329			if (contact != null) {
 330				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 331						activity.xmppConnectionService.getPresenceGenerator()
 332								.sendPresenceUpdatesTo(contact));
 333				hideSnackbar();
 334			}
 335		}
 336	};
 337	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 338
 339		@Override
 340		public void onClick(View v) {
 341			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 342			if (pendingIntent != null) {
 343				try {
 344					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 345							REQUEST_DECRYPT_PGP,
 346							null,
 347							0,
 348							0,
 349							0);
 350				} catch (SendIntentException e) {
 351					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 352					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 353				}
 354			}
 355			updateSnackBar(conversation);
 356		}
 357	};
 358	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 359	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 360		if (actionId == EditorInfo.IME_ACTION_SEND) {
 361			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 362			if (imm != null && imm.isFullscreenMode()) {
 363				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 364			}
 365			sendMessage();
 366			return true;
 367		} else {
 368			return false;
 369		}
 370	};
 371	private OnClickListener mScrollButtonListener = new OnClickListener() {
 372
 373		@Override
 374		public void onClick(View v) {
 375			stopScrolling();
 376			setSelection(binding.messagesView.getCount() - 1, true);
 377		}
 378	};
 379	private OnClickListener mSendButtonListener = new OnClickListener() {
 380
 381		@Override
 382		public void onClick(View v) {
 383			Object tag = v.getTag();
 384			if (tag instanceof SendButtonAction) {
 385				SendButtonAction action = (SendButtonAction) tag;
 386				switch (action) {
 387					case TAKE_PHOTO:
 388					case RECORD_VIDEO:
 389					case SEND_LOCATION:
 390					case RECORD_VOICE:
 391					case CHOOSE_PICTURE:
 392						attachFile(action.toChoice());
 393						break;
 394					case CANCEL:
 395						if (conversation != null) {
 396							if (conversation.setCorrectingMessage(null)) {
 397								binding.textinput.setText("");
 398								binding.textinput.append(conversation.getDraftMessage());
 399								conversation.setDraftMessage(null);
 400							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 401								conversation.setNextCounterpart(null);
 402							}
 403							updateChatMsgHint();
 404							updateSendButton();
 405							updateEditablity();
 406						}
 407						break;
 408					default:
 409						sendMessage();
 410				}
 411			} else {
 412				sendMessage();
 413			}
 414		}
 415	};
 416	private int completionIndex = 0;
 417	private int lastCompletionLength = 0;
 418	private String incomplete;
 419	private int lastCompletionCursor;
 420	private boolean firstWord = false;
 421	private Message mPendingDownloadableMessage;
 422
 423	private static ConversationFragment findConversationFragment(Activity activity) {
 424		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 425		if (fragment != null && fragment instanceof ConversationFragment) {
 426			return (ConversationFragment) fragment;
 427		}
 428		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 429		if (fragment != null && fragment instanceof ConversationFragment) {
 430			return (ConversationFragment) fragment;
 431		}
 432		return null;
 433	}
 434
 435	public static void startStopPending(Activity activity) {
 436		ConversationFragment fragment = findConversationFragment(activity);
 437		if (fragment != null) {
 438			fragment.messageListAdapter.startStopPending();
 439		}
 440	}
 441
 442	public static void downloadFile(Activity activity, Message message) {
 443		ConversationFragment fragment = findConversationFragment(activity);
 444		if (fragment != null) {
 445			fragment.startDownloadable(message);
 446		}
 447	}
 448
 449	public static void registerPendingMessage(Activity activity, Message message) {
 450		ConversationFragment fragment = findConversationFragment(activity);
 451		if (fragment != null) {
 452			fragment.pendingMessage.push(message);
 453		}
 454	}
 455
 456	public static void openPendingMessage(Activity activity) {
 457		ConversationFragment fragment = findConversationFragment(activity);
 458		if (fragment != null) {
 459			Message message = fragment.pendingMessage.pop();
 460			if (message != null) {
 461				fragment.messageListAdapter.openDownloadable(message);
 462			}
 463		}
 464	}
 465
 466	public static Conversation getConversation(Activity activity) {
 467		return getConversation(activity, R.id.secondary_fragment);
 468	}
 469
 470	private static Conversation getConversation(Activity activity, @IdRes int res) {
 471		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 472		if (fragment != null && fragment instanceof ConversationFragment) {
 473			return ((ConversationFragment) fragment).getConversation();
 474		} else {
 475			return null;
 476		}
 477	}
 478
 479	public static Conversation getConversationReliable(Activity activity) {
 480		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 481		if (conversation != null) {
 482			return conversation;
 483		}
 484		return getConversation(activity, R.id.main_fragment);
 485	}
 486
 487	private static boolean allGranted(int[] grantResults) {
 488		for (int grantResult : grantResults) {
 489			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 490				return false;
 491			}
 492		}
 493		return true;
 494	}
 495
 496	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 497		for (int i = 0; i < grantResults.length; ++i) {
 498			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 499				return permissions[i];
 500			}
 501		}
 502		return null;
 503	}
 504
 505	private static void hideSoftKeyboard(final Activity activity) {
 506		InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 507		View view = activity.getCurrentFocus();
 508		if (view != null && imm != null) {
 509			imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 510		}
 511	}
 512
 513	private static boolean scrolledToBottom(AbsListView listView) {
 514		final int count = listView.getCount();
 515		if (count == 0) {
 516			return true;
 517		} else if (listView.getLastVisiblePosition() == count - 1) {
 518			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 519			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 520		} else {
 521			return false;
 522		}
 523	}
 524
 525	private void toggleScrollDownButton() {
 526		toggleScrollDownButton(binding.messagesView);
 527	}
 528
 529	private void toggleScrollDownButton(AbsListView listView) {
 530		if (conversation == null) {
 531			return;
 532		}
 533		if (scrolledToBottom(listView)) {
 534			lastMessageUuid = null;
 535			hideUnreadMessagesCount();
 536		} else {
 537			binding.scrollToBottomButton.setEnabled(true);
 538			binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 539			if (lastMessageUuid == null) {
 540				lastMessageUuid = conversation.getLatestMessage().getUuid();
 541			}
 542			if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 543				binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 544			}
 545		}
 546	}
 547
 548	private int getIndexOf(String uuid, List<Message> messages) {
 549		if (uuid == null) {
 550			return messages.size() - 1;
 551		}
 552		for (int i = 0; i < messages.size(); ++i) {
 553			if (uuid.equals(messages.get(i).getUuid())) {
 554				return i;
 555			} else {
 556				Message next = messages.get(i);
 557				while (next != null && next.wasMergedIntoPrevious()) {
 558					if (uuid.equals(next.getUuid())) {
 559						return i;
 560					}
 561					next = next.next();
 562				}
 563
 564			}
 565		}
 566		return -1;
 567	}
 568
 569	private ScrollState getScrollPosition() {
 570		final ListView listView = this.binding.messagesView;
 571		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 572			return null;
 573		} else {
 574			final int pos = listView.getFirstVisiblePosition();
 575			final View view = listView.getChildAt(0);
 576			if (view == null) {
 577				return null;
 578			} else {
 579				return new ScrollState(pos, view.getTop());
 580			}
 581		}
 582	}
 583
 584	private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 585		if (scrollPosition != null) {
 586
 587			this.lastMessageUuid = lastMessageUuid;
 588			if (lastMessageUuid != null) {
 589				binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 590			}
 591			//TODO maybe this needs a 'post'
 592			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 593			toggleScrollDownButton();
 594		}
 595	}
 596
 597	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 598		if (conversation == null) {
 599			return;
 600		}
 601		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 602
 603			@Override
 604			public void success(Message message) {
 605
 606			}
 607
 608			@Override
 609			public void error(int errorCode, Message object) {
 610				//TODO show possible pgp error
 611			}
 612
 613			@Override
 614			public void userInputRequried(PendingIntent pi, Message object) {
 615
 616			}
 617		});
 618	}
 619
 620	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 621		if (conversation == null) {
 622			return;
 623		}
 624		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 625		prepareFileToast.show();
 626		activity.delegateUriPermissionsToService(uri);
 627		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 628			@Override
 629			public void inform(final String text) {
 630				hidePrepareFileToast(prepareFileToast);
 631				runOnUiThread(() -> activity.replaceToast(text));
 632			}
 633
 634			@Override
 635			public void success(Message message) {
 636				runOnUiThread(() -> activity.hideToast());
 637				hidePrepareFileToast(prepareFileToast);
 638			}
 639
 640			@Override
 641			public void error(final int errorCode, Message message) {
 642				hidePrepareFileToast(prepareFileToast);
 643				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 644
 645			}
 646
 647			@Override
 648			public void userInputRequried(PendingIntent pi, Message message) {
 649				hidePrepareFileToast(prepareFileToast);
 650			}
 651		});
 652	}
 653
 654	public void attachImageToConversation(Uri uri) {
 655		this.attachImageToConversation(conversation, uri);
 656	}
 657
 658	private void attachImageToConversation(Conversation conversation, Uri uri) {
 659		if (conversation == null) {
 660			return;
 661		}
 662		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 663		prepareFileToast.show();
 664		activity.delegateUriPermissionsToService(uri);
 665		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 666				new UiCallback<Message>() {
 667
 668					@Override
 669					public void userInputRequried(PendingIntent pi, Message object) {
 670						hidePrepareFileToast(prepareFileToast);
 671					}
 672
 673					@Override
 674					public void success(Message message) {
 675						hidePrepareFileToast(prepareFileToast);
 676					}
 677
 678					@Override
 679					public void error(final int error, Message message) {
 680						hidePrepareFileToast(prepareFileToast);
 681						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 682					}
 683				});
 684	}
 685
 686	private void hidePrepareFileToast(final Toast prepareFileToast) {
 687		if (prepareFileToast != null && activity != null) {
 688			activity.runOnUiThread(prepareFileToast::cancel);
 689		}
 690	}
 691
 692	private void sendMessage() {
 693		final String body = this.binding.textinput.getText().toString();
 694		final Conversation conversation = this.conversation;
 695		if (body.length() == 0 || conversation == null) {
 696			return;
 697		}
 698		final Message message;
 699		if (conversation.getCorrectingMessage() == null) {
 700			message = new Message(conversation, body, conversation.getNextEncryption());
 701			if (conversation.getMode() == Conversation.MODE_MULTI) {
 702				final Jid nextCounterpart = conversation.getNextCounterpart();
 703				if (nextCounterpart != null) {
 704					message.setCounterpart(nextCounterpart);
 705					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 706					message.setType(Message.TYPE_PRIVATE);
 707				}
 708			}
 709		} else {
 710			message = conversation.getCorrectingMessage();
 711			message.setBody(body);
 712			message.setEdited(message.getUuid());
 713			message.setUuid(UUID.randomUUID().toString());
 714		}
 715		switch (message.getConversation().getNextEncryption()) {
 716			case Message.ENCRYPTION_PGP:
 717				sendPgpMessage(message);
 718				break;
 719			case Message.ENCRYPTION_AXOLOTL:
 720				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 721					sendMessage(message);
 722				}
 723				break;
 724			default:
 725				sendMessage(message);
 726		}
 727	}
 728
 729	protected boolean trustKeysIfNeeded(int requestCode) {
 730		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 731	}
 732
 733	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 734		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 735		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 736		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 737		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 738		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 739		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 740		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 741		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 742			axolotlService.createSessionsIfNeeded(conversation);
 743			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 744			String[] contacts = new String[targets.size()];
 745			for (int i = 0; i < contacts.length; ++i) {
 746				contacts[i] = targets.get(i).toString();
 747			}
 748			intent.putExtra("contacts", contacts);
 749			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 750			intent.putExtra("choice", attachmentChoice);
 751			intent.putExtra("conversation", conversation.getUuid());
 752			startActivityForResult(intent, requestCode);
 753			return true;
 754		} else {
 755			return false;
 756		}
 757	}
 758
 759	public void updateChatMsgHint() {
 760		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 761		if (conversation.getCorrectingMessage() != null) {
 762			this.binding.textinput.setHint(R.string.send_corrected_message);
 763		} else if (multi && conversation.getNextCounterpart() != null) {
 764			this.binding.textinput.setHint(getString(
 765					R.string.send_private_message_to,
 766					conversation.getNextCounterpart().getResource()));
 767		} else if (multi && !conversation.getMucOptions().participating()) {
 768			this.binding.textinput.setHint(R.string.you_are_not_participating);
 769		} else {
 770			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 771			getActivity().invalidateOptionsMenu();
 772		}
 773	}
 774
 775	public void setupIme() {
 776		this.binding.textinput.refreshIme();
 777	}
 778
 779	private void handleActivityResult(ActivityResult activityResult) {
 780		if (activityResult.resultCode == Activity.RESULT_OK) {
 781			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 782		} else {
 783			handleNegativeActivityResult(activityResult.requestCode);
 784		}
 785	}
 786
 787	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 788		switch (requestCode) {
 789			case REQUEST_TRUST_KEYS_TEXT:
 790				final String body = this.binding.textinput.getText().toString();
 791				Message message = new Message(conversation, body, conversation.getNextEncryption());
 792				sendMessage(message);
 793				break;
 794			case REQUEST_TRUST_KEYS_MENU:
 795				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 796				selectPresenceToAttachFile(choice);
 797				break;
 798			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 799				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 800				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 801					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 802					attachImageToConversation(conversation, i.next());
 803				}
 804				break;
 805			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 806				Uri takePhotoUri = pendingTakePhotoUri.pop();
 807				if (takePhotoUri != null) {
 808					attachImageToConversation(conversation, takePhotoUri);
 809				} else {
 810					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 811				}
 812				break;
 813			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 814			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 815			case ATTACHMENT_CHOICE_RECORD_VOICE:
 816				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 817				String type = data.getType();
 818				final PresenceSelector.OnPresenceSelected callback = () -> {
 819					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 820						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 821						attachFileToConversation(conversation, i.next(), type);
 822					}
 823				};
 824				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 825					callback.onPresenceSelected();
 826				} else {
 827					activity.selectPresence(conversation, callback);
 828				}
 829				break;
 830			case ATTACHMENT_CHOICE_LOCATION:
 831				double latitude = data.getDoubleExtra("latitude", 0);
 832				double longitude = data.getDoubleExtra("longitude", 0);
 833				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 834				attachLocationToConversation(conversation, geo);
 835				break;
 836			case REQUEST_INVITE_TO_CONVERSATION:
 837				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 838				if (invite != null) {
 839					if (invite.execute(activity)) {
 840						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 841						activity.mToast.show();
 842					}
 843				}
 844				break;
 845		}
 846	}
 847
 848	private void handleNegativeActivityResult(int requestCode) {
 849		switch (requestCode) {
 850			//nothing to do for now
 851		}
 852	}
 853
 854	@Override
 855	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 856		super.onActivityResult(requestCode, resultCode, data);
 857		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 858		if (activity != null && activity.xmppConnectionService != null) {
 859			handleActivityResult(activityResult);
 860		} else {
 861			this.postponedActivityResult.push(activityResult);
 862		}
 863	}
 864
 865	public void unblockConversation(final Blockable conversation) {
 866		activity.xmppConnectionService.sendUnblockRequest(conversation);
 867	}
 868
 869	@Override
 870	public void onAttach(Activity activity) {
 871		super.onAttach(activity);
 872		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 873		if (activity instanceof ConversationsActivity) {
 874			this.activity = (ConversationsActivity) activity;
 875		} else {
 876			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 877		}
 878	}
 879
 880	@Override
 881	public void onDetach() {
 882		super.onDetach();
 883		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 884	}
 885
 886	@Override
 887	public void onCreate(Bundle savedInstanceState) {
 888		super.onCreate(savedInstanceState);
 889		setHasOptionsMenu(true);
 890	}
 891
 892	@Override
 893	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 894		menuInflater.inflate(R.menu.fragment_conversation, menu);
 895		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 896		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 897		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 898		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 899		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 900
 901
 902		if (conversation != null) {
 903			if (conversation.getMode() == Conversation.MODE_MULTI) {
 904				menuContactDetails.setVisible(false);
 905				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 906			} else {
 907				menuContactDetails.setVisible(!this.conversation.withSelf());
 908				menuMucDetails.setVisible(false);
 909				final XmppConnectionService service = activity.xmppConnectionService;
 910				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 911			}
 912			if (conversation.isMuted()) {
 913				menuMute.setVisible(false);
 914			} else {
 915				menuUnmute.setVisible(false);
 916			}
 917			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 918			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 919		}
 920		super.onCreateOptionsMenu(menu, menuInflater);
 921	}
 922
 923	@Override
 924	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 925		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 926		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 927
 928		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 929
 930		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 931		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 932
 933		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 934
 935		binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 936		binding.messagesView.setOnScrollListener(mOnScrollListener);
 937		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 938		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 939		messageListAdapter.setOnContactPictureClicked(message -> {
 940			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 941			if (received) {
 942				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 943					Jid user = message.getCounterpart();
 944					if (user != null && !user.isBareJid()) {
 945						final MucOptions mucOptions = message.getConversation().getMucOptions();
 946						if (mucOptions.participating() || message.getConversation().getNextCounterpart() != null) {
 947							if (!mucOptions.isUserInRoom(user)) {
 948								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 949							}
 950							highlightInConference(user.getResource());
 951						} else {
 952							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 953						}
 954					}
 955					return;
 956				} else {
 957					if (!message.getContact().isSelf()) {
 958						String fingerprint;
 959						if (message.getEncryption() == Message.ENCRYPTION_PGP
 960								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 961							fingerprint = "pgp";
 962						} else {
 963							fingerprint = message.getFingerprint();
 964						}
 965						activity.switchToContactDetails(message.getContact(), fingerprint);
 966						return;
 967					}
 968				}
 969			}
 970			Account account = message.getConversation().getAccount();
 971			Intent intent = new Intent(activity, EditAccountActivity.class);
 972			intent.putExtra("jid", account.getJid().asBareJid().toString());
 973			String fingerprint;
 974			if (message.getEncryption() == Message.ENCRYPTION_PGP
 975					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 976				fingerprint = "pgp";
 977			} else {
 978				fingerprint = message.getFingerprint();
 979			}
 980			intent.putExtra("fingerprint", fingerprint);
 981			startActivity(intent);
 982		});
 983		messageListAdapter.setOnContactPictureLongClicked(message -> {
 984			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 985				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 986					final MucOptions mucOptions = conversation.getMucOptions();
 987					if (!mucOptions.allowPm()) {
 988						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 989						return;
 990					}
 991					Jid user = message.getCounterpart();
 992					if (user != null && !user.isBareJid()) {
 993						if (mucOptions.isUserInRoom(user)) {
 994							privateMessageWith(user);
 995						} else {
 996							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 997						}
 998					}
 999				}
1000			} else {
1001				activity.showQrCode(conversation.getAccount().getShareableUri());
1002			}
1003		});
1004		messageListAdapter.setOnQuoteListener(this::quoteText);
1005		binding.messagesView.setAdapter(messageListAdapter);
1006
1007		registerForContextMenu(binding.messagesView);
1008
1009		return binding.getRoot();
1010	}
1011
1012	private void quoteText(String text) {
1013		if (binding.textinput.isEnabled()) {
1014			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
1015			Editable editable = binding.textinput.getEditableText();
1016			int position = binding.textinput.getSelectionEnd();
1017			if (position == -1) position = editable.length();
1018			if (position > 0 && editable.charAt(position - 1) != '\n') {
1019				editable.insert(position++, "\n");
1020			}
1021			editable.insert(position, text);
1022			position += text.length();
1023			editable.insert(position++, "\n");
1024			if (position < editable.length() && editable.charAt(position) != '\n') {
1025				editable.insert(position, "\n");
1026			}
1027			binding.textinput.setSelection(position);
1028			binding.textinput.requestFocus();
1029			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1030			if (inputMethodManager != null) {
1031				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1032			}
1033		}
1034	}
1035
1036	private void quoteMessage(Message message) {
1037		quoteText(MessageUtils.prepareQuote(message));
1038	}
1039
1040	@Override
1041	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1042		synchronized (this.messageList) {
1043			super.onCreateContextMenu(menu, v, menuInfo);
1044			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1045			this.selectedMessage = this.messageList.get(acmi.position);
1046			populateContextMenu(menu);
1047		}
1048	}
1049
1050	private void populateContextMenu(ContextMenu menu) {
1051		final Message m = this.selectedMessage;
1052		final Transferable t = m.getTransferable();
1053		Message relevantForCorrection = m;
1054		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1055			relevantForCorrection = relevantForCorrection.next();
1056		}
1057		if (m.getType() != Message.TYPE_STATUS) {
1058
1059			if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1060				return;
1061			}
1062
1063			final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1064			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1065					|| m.getEncryption() == Message.ENCRYPTION_PGP;
1066			final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1067			activity.getMenuInflater().inflate(R.menu.message_context, menu);
1068			menu.setHeaderTitle(R.string.message_options);
1069			MenuItem copyMessage = menu.findItem(R.id.copy_message);
1070			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1071			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1072			MenuItem correctMessage = menu.findItem(R.id.correct_message);
1073			MenuItem shareWith = menu.findItem(R.id.share_with);
1074			MenuItem sendAgain = menu.findItem(R.id.send_again);
1075			MenuItem copyUrl = menu.findItem(R.id.copy_url);
1076			MenuItem downloadFile = menu.findItem(R.id.download_file);
1077			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1078			MenuItem deleteFile = menu.findItem(R.id.delete_file);
1079			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1080			if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1081				copyMessage.setVisible(true);
1082				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
1083			}
1084			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1085				retryDecryption.setVisible(true);
1086			}
1087			if (relevantForCorrection.getType() == Message.TYPE_TEXT
1088					&& relevantForCorrection.isLastCorrectableMessage()
1089					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1090				correctMessage.setVisible(true);
1091			}
1092			if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1093				shareWith.setVisible(true);
1094			}
1095			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1096				sendAgain.setVisible(true);
1097			}
1098			if (m.hasFileOnRemoteHost()
1099					|| m.isGeoUri()
1100					|| m.treatAsDownloadable()
1101					|| (t != null && t instanceof HttpDownloadConnection)) {
1102				copyUrl.setVisible(true);
1103			}
1104			if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1105				downloadFile.setVisible(true);
1106				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1107			}
1108			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1109					|| m.getStatus() == Message.STATUS_UNSEND
1110					|| m.getStatus() == Message.STATUS_OFFERED;
1111			if ((t != null && !deleted) || waitingOfferedSending && m.needsUploading()) {
1112				cancelTransmission.setVisible(true);
1113			}
1114			if (m.isFileOrImage() && !deleted) {
1115				String path = m.getRelativeFilePath();
1116				if (path == null || !path.startsWith("/")) {
1117					deleteFile.setVisible(true);
1118					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1119				}
1120			}
1121			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1122				showErrorMessage.setVisible(true);
1123			}
1124		}
1125	}
1126
1127	@Override
1128	public boolean onContextItemSelected(MenuItem item) {
1129		switch (item.getItemId()) {
1130			case R.id.share_with:
1131				shareWith(selectedMessage);
1132				return true;
1133			case R.id.correct_message:
1134				correctMessage(selectedMessage);
1135				return true;
1136			case R.id.copy_message:
1137				copyMessage(selectedMessage);
1138				return true;
1139			case R.id.quote_message:
1140				quoteMessage(selectedMessage);
1141				return true;
1142			case R.id.send_again:
1143				resendMessage(selectedMessage);
1144				return true;
1145			case R.id.copy_url:
1146				copyUrl(selectedMessage);
1147				return true;
1148			case R.id.download_file:
1149				startDownloadable(selectedMessage);
1150				return true;
1151			case R.id.cancel_transmission:
1152				cancelTransmission(selectedMessage);
1153				return true;
1154			case R.id.retry_decryption:
1155				retryDecryption(selectedMessage);
1156				return true;
1157			case R.id.delete_file:
1158				deleteFile(selectedMessage);
1159				return true;
1160			case R.id.show_error_message:
1161				showErrorMessage(selectedMessage);
1162				return true;
1163			default:
1164				return super.onContextItemSelected(item);
1165		}
1166	}
1167
1168	@Override
1169	public boolean onOptionsItemSelected(final MenuItem item) {
1170		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1171			return false;
1172		} else if (conversation == null) {
1173			return super.onOptionsItemSelected(item);
1174		}
1175		switch (item.getItemId()) {
1176			case R.id.encryption_choice_axolotl:
1177			case R.id.encryption_choice_pgp:
1178			case R.id.encryption_choice_none:
1179				handleEncryptionSelection(item);
1180				break;
1181			case R.id.attach_choose_picture:
1182			case R.id.attach_take_picture:
1183			case R.id.attach_record_video:
1184			case R.id.attach_choose_file:
1185			case R.id.attach_record_voice:
1186			case R.id.attach_location:
1187				handleAttachmentSelection(item);
1188				break;
1189			case R.id.action_archive:
1190				activity.xmppConnectionService.archiveConversation(conversation);
1191				break;
1192			case R.id.action_contact_details:
1193				activity.switchToContactDetails(conversation.getContact());
1194				break;
1195			case R.id.action_muc_details:
1196				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1197				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1198				intent.putExtra("uuid", conversation.getUuid());
1199				startActivity(intent);
1200				break;
1201			case R.id.action_invite:
1202				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1203				break;
1204			case R.id.action_clear_history:
1205				clearHistoryDialog(conversation);
1206				break;
1207			case R.id.action_mute:
1208				muteConversationDialog(conversation);
1209				break;
1210			case R.id.action_unmute:
1211				unmuteConversation(conversation);
1212				break;
1213			case R.id.action_block:
1214			case R.id.action_unblock:
1215				final Activity activity = getActivity();
1216				if (activity instanceof XmppActivity) {
1217					BlockContactDialog.show((XmppActivity) activity, conversation);
1218				}
1219				break;
1220			default:
1221				break;
1222		}
1223		return super.onOptionsItemSelected(item);
1224	}
1225
1226	private void handleAttachmentSelection(MenuItem item) {
1227		switch (item.getItemId()) {
1228			case R.id.attach_choose_picture:
1229				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1230				break;
1231			case R.id.attach_take_picture:
1232				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1233				break;
1234			case R.id.attach_record_video:
1235				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1236				break;
1237			case R.id.attach_choose_file:
1238				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1239				break;
1240			case R.id.attach_record_voice:
1241				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1242				break;
1243			case R.id.attach_location:
1244				attachFile(ATTACHMENT_CHOICE_LOCATION);
1245				break;
1246		}
1247	}
1248
1249	private void handleEncryptionSelection(MenuItem item) {
1250		if (conversation == null) {
1251			return;
1252		}
1253		switch (item.getItemId()) {
1254			case R.id.encryption_choice_none:
1255				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1256				item.setChecked(true);
1257				break;
1258			case R.id.encryption_choice_pgp:
1259				if (activity.hasPgp()) {
1260					if (conversation.getAccount().getPgpSignature() != null) {
1261						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1262						item.setChecked(true);
1263					} else {
1264						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1265					}
1266				} else {
1267					activity.showInstallPgpDialog();
1268				}
1269				break;
1270			case R.id.encryption_choice_axolotl:
1271				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1272						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1273				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1274				item.setChecked(true);
1275				break;
1276			default:
1277				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1278				break;
1279		}
1280		activity.xmppConnectionService.updateConversation(conversation);
1281		updateChatMsgHint();
1282		getActivity().invalidateOptionsMenu();
1283		activity.refreshUi();
1284	}
1285
1286	public void attachFile(final int attachmentChoice) {
1287		if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1288			if (!hasStorageAndCameraPermission(attachmentChoice)) {
1289				return;
1290			}
1291		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1292			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1293				return;
1294			}
1295		}
1296		try {
1297			activity.getPreferences().edit()
1298					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1299					.apply();
1300		} catch (IllegalArgumentException e) {
1301			//just do not save
1302		}
1303		final int encryption = conversation.getNextEncryption();
1304		final int mode = conversation.getMode();
1305		if (encryption == Message.ENCRYPTION_PGP) {
1306			if (activity.hasPgp()) {
1307				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1308					activity.xmppConnectionService.getPgpEngine().hasKey(
1309							conversation.getContact(),
1310							new UiCallback<Contact>() {
1311
1312								@Override
1313								public void userInputRequried(PendingIntent pi, Contact contact) {
1314									startPendingIntent(pi, attachmentChoice);
1315								}
1316
1317								@Override
1318								public void success(Contact contact) {
1319									selectPresenceToAttachFile(attachmentChoice);
1320								}
1321
1322								@Override
1323								public void error(int error, Contact contact) {
1324									activity.replaceToast(getString(error));
1325								}
1326							});
1327				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1328					if (!conversation.getMucOptions().everybodyHasKeys()) {
1329						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1330						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1331						warning.show();
1332					}
1333					selectPresenceToAttachFile(attachmentChoice);
1334				} else {
1335					showNoPGPKeyDialog(false, (dialog, which) -> {
1336						conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1337						activity.xmppConnectionService.updateConversation(conversation);
1338						selectPresenceToAttachFile(attachmentChoice);
1339					});
1340				}
1341			} else {
1342				activity.showInstallPgpDialog();
1343			}
1344		} else {
1345			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1346				selectPresenceToAttachFile(attachmentChoice);
1347			}
1348		}
1349	}
1350
1351	@Override
1352	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1353		if (grantResults.length > 0)
1354			if (allGranted(grantResults)) {
1355				if (requestCode == REQUEST_START_DOWNLOAD) {
1356					if (this.mPendingDownloadableMessage != null) {
1357						startDownloadable(this.mPendingDownloadableMessage);
1358					}
1359				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1360					if (this.mPendingEditorContent != null) {
1361						attachImageToConversation(this.mPendingEditorContent);
1362					}
1363				} else {
1364					attachFile(requestCode);
1365				}
1366			} else {
1367				@StringRes int res;
1368				if (Manifest.permission.CAMERA.equals(getFirstDenied(grantResults, permissions))) {
1369					res = R.string.no_camera_permission;
1370				} else {
1371					res = R.string.no_storage_permission;
1372				}
1373				Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1374			}
1375	}
1376
1377	public void startDownloadable(Message message) {
1378		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1379			this.mPendingDownloadableMessage = message;
1380			return;
1381		}
1382		Transferable transferable = message.getTransferable();
1383		if (transferable != null) {
1384			if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1385				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1386				return;
1387			}
1388			if (!transferable.start()) {
1389				Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1390				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1391			}
1392		} else if (message.treatAsDownloadable()) {
1393			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1394		}
1395	}
1396
1397	@SuppressLint("InflateParams")
1398	protected void clearHistoryDialog(final Conversation conversation) {
1399		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1400		builder.setTitle(getString(R.string.clear_conversation_history));
1401		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1402		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1403		builder.setView(dialogView);
1404		builder.setNegativeButton(getString(R.string.cancel), null);
1405		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1406			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1407			if (endConversationCheckBox.isChecked()) {
1408				this.activity.xmppConnectionService.archiveConversation(conversation);
1409				this.activity.onConversationArchived(conversation);
1410			} else {
1411				activity.onConversationsListItemUpdated();
1412				refresh();
1413			}
1414		});
1415		builder.create().show();
1416	}
1417
1418	protected void muteConversationDialog(final Conversation conversation) {
1419		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1420		builder.setTitle(R.string.disable_notifications);
1421		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1422		final CharSequence[] labels = new CharSequence[durations.length];
1423		for (int i = 0; i < durations.length; ++i) {
1424			if (durations[i] == -1) {
1425				labels[i] = getString(R.string.until_further_notice);
1426			} else {
1427				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1428			}
1429		}
1430		builder.setItems(labels, (dialog, which) -> {
1431			final long till;
1432			if (durations[which] == -1) {
1433				till = Long.MAX_VALUE;
1434			} else {
1435				till = System.currentTimeMillis() + (durations[which] * 1000);
1436			}
1437			conversation.setMutedTill(till);
1438			activity.xmppConnectionService.updateConversation(conversation);
1439			activity.onConversationsListItemUpdated();
1440			refresh();
1441			getActivity().invalidateOptionsMenu();
1442		});
1443		builder.create().show();
1444	}
1445
1446	private boolean hasStoragePermission(int requestCode) {
1447		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1448			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1449				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1450				return false;
1451			} else {
1452				return true;
1453			}
1454		} else {
1455			return true;
1456		}
1457	}
1458
1459	private boolean hasStorageAndCameraPermission(int requestCode) {
1460		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1461			List<String> missingPermissions = new ArrayList<>();
1462			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1463				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1464			}
1465			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1466				missingPermissions.add(Manifest.permission.CAMERA);
1467			}
1468			if (missingPermissions.size() == 0) {
1469				return true;
1470			} else {
1471				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1472				return false;
1473			}
1474		} else {
1475			return true;
1476		}
1477	}
1478
1479	public void unmuteConversation(final Conversation conversation) {
1480		conversation.setMutedTill(0);
1481		this.activity.xmppConnectionService.updateConversation(conversation);
1482		this.activity.onConversationsListItemUpdated();
1483		refresh();
1484		getActivity().invalidateOptionsMenu();
1485	}
1486
1487	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1488		final Account account = conversation.getAccount();
1489		final PresenceSelector.OnPresenceSelected callback = () -> {
1490			Intent intent = new Intent();
1491			boolean chooser = false;
1492			String fallbackPackageId = null;
1493			switch (attachmentChoice) {
1494				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1495					intent.setAction(Intent.ACTION_GET_CONTENT);
1496					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1497					intent.setType("image/*");
1498					chooser = true;
1499					break;
1500				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1501					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1502					break;
1503				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1504					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1505					pendingTakePhotoUri.push(uri);
1506					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1507					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1508					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1509					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1510					break;
1511				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1512					chooser = true;
1513					intent.setType("*/*");
1514					intent.addCategory(Intent.CATEGORY_OPENABLE);
1515					intent.setAction(Intent.ACTION_GET_CONTENT);
1516					break;
1517				case ATTACHMENT_CHOICE_RECORD_VOICE:
1518					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1519					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1520					break;
1521				case ATTACHMENT_CHOICE_LOCATION:
1522					intent.setAction("eu.siacs.conversations.location.request");
1523					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1524					break;
1525			}
1526			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1527				if (chooser) {
1528					startActivityForResult(
1529							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1530							attachmentChoice);
1531				} else {
1532					startActivityForResult(intent, attachmentChoice);
1533				}
1534			} else if (fallbackPackageId != null) {
1535				startActivity(getInstallApkIntent(fallbackPackageId));
1536			}
1537		};
1538		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1539			conversation.setNextCounterpart(null);
1540			callback.onPresenceSelected();
1541		} else {
1542			activity.selectPresence(conversation, callback);
1543		}
1544	}
1545
1546	private Intent getInstallApkIntent(final String packageId) {
1547		Intent intent = new Intent(Intent.ACTION_VIEW);
1548		intent.setData(Uri.parse("market://details?id=" + packageId));
1549		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1550			return intent;
1551		} else {
1552			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1553			return intent;
1554		}
1555	}
1556
1557	@Override
1558	public void onResume() {
1559		new Handler().post(() -> {
1560			final Activity activity = getActivity();
1561			if (activity == null) {
1562				return;
1563			}
1564			final PackageManager packageManager = activity.getPackageManager();
1565			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1566			getActivity().invalidateOptionsMenu();
1567		});
1568		super.onResume();
1569		binding.messagesView.post(this::fireReadEvent);
1570	}
1571
1572	private void fireReadEvent() {
1573		if (activity != null && this.conversation != null) {
1574			String uuid = getLastVisibleMessageUuid();
1575			if (uuid != null) {
1576				activity.onConversationRead(this.conversation, uuid);
1577			}
1578		}
1579	}
1580
1581	private String getLastVisibleMessageUuid() {
1582		if (binding == null) {
1583			return null;
1584		}
1585		synchronized (this.messageList) {
1586			int pos = binding.messagesView.getLastVisiblePosition();
1587			if (pos >= 0) {
1588				Message message = null;
1589				for (int i = pos; i >= 0; --i) {
1590					try {
1591						message = (Message) binding.messagesView.getItemAtPosition(i);
1592					} catch (IndexOutOfBoundsException e) {
1593						//should not happen if we synchronize properly. however if that fails we just gonna try item -1
1594						continue;
1595					}
1596					if (message.getType() != Message.TYPE_STATUS) {
1597						break;
1598					}
1599				}
1600				if (message != null) {
1601					while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1602						message = message.next();
1603					}
1604					return message.getUuid();
1605				}
1606			}
1607		}
1608		return null;
1609	}
1610
1611	private void showErrorMessage(final Message message) {
1612		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1613		builder.setTitle(R.string.error_message);
1614		builder.setMessage(message.getErrorMessage());
1615		builder.setPositiveButton(R.string.confirm, null);
1616		builder.create().show();
1617	}
1618
1619	private void shareWith(Message message) {
1620		Intent shareIntent = new Intent();
1621		shareIntent.setAction(Intent.ACTION_SEND);
1622		if (message.isGeoUri()) {
1623			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1624			shareIntent.setType("text/plain");
1625		} else if (!message.isFileOrImage()) {
1626			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1627			shareIntent.setType("text/plain");
1628		} else {
1629			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1630			try {
1631				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1632			} catch (SecurityException e) {
1633				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1634				return;
1635			}
1636			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1637			String mime = message.getMimeType();
1638			if (mime == null) {
1639				mime = "*/*";
1640			}
1641			shareIntent.setType(mime);
1642		}
1643		try {
1644			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1645		} catch (ActivityNotFoundException e) {
1646			//This should happen only on faulty androids because normally chooser is always available
1647			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1648		}
1649	}
1650
1651	private void copyMessage(Message message) {
1652		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1653			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1654		}
1655	}
1656
1657	private void deleteFile(Message message) {
1658		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1659			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1660			activity.onConversationsListItemUpdated();
1661			refresh();
1662		}
1663	}
1664
1665	private void resendMessage(final Message message) {
1666		if (message.isFileOrImage()) {
1667			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1668			if (file.exists()) {
1669				final Conversation conversation = message.getConversation();
1670				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1671				if (!message.hasFileOnRemoteHost()
1672						&& xmppConnection != null
1673						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1674					activity.selectPresence(conversation, () -> {
1675						message.setCounterpart(conversation.getNextCounterpart());
1676						activity.xmppConnectionService.resendFailedMessages(message);
1677						new Handler().post(() -> {
1678							int size = messageList.size();
1679							this.binding.messagesView.setSelection(size - 1);
1680						});
1681					});
1682					return;
1683				}
1684			} else {
1685				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1686				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1687				activity.onConversationsListItemUpdated();
1688				refresh();
1689				return;
1690			}
1691		}
1692		activity.xmppConnectionService.resendFailedMessages(message);
1693		new Handler().post(() -> {
1694			int size = messageList.size();
1695			this.binding.messagesView.setSelection(size - 1);
1696		});
1697	}
1698
1699	private void copyUrl(Message message) {
1700		final String url;
1701		final int resId;
1702		if (message.isGeoUri()) {
1703			resId = R.string.location;
1704			url = message.getBody();
1705		} else if (message.hasFileOnRemoteHost()) {
1706			resId = R.string.file_url;
1707			url = message.getFileParams().url.toString();
1708		} else {
1709			url = message.getBody().trim();
1710			resId = R.string.file_url;
1711		}
1712		if (activity.copyTextToClipboard(url, resId)) {
1713			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1714		}
1715	}
1716
1717	private void cancelTransmission(Message message) {
1718		Transferable transferable = message.getTransferable();
1719		if (transferable != null) {
1720			transferable.cancel();
1721		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1722			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1723		}
1724	}
1725
1726	private void retryDecryption(Message message) {
1727		message.setEncryption(Message.ENCRYPTION_PGP);
1728		activity.onConversationsListItemUpdated();
1729		refresh();
1730		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1731	}
1732
1733	private void privateMessageWith(final Jid counterpart) {
1734		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1735			activity.xmppConnectionService.sendChatState(conversation);
1736		}
1737		this.binding.textinput.setText("");
1738		this.conversation.setNextCounterpart(counterpart);
1739		updateChatMsgHint();
1740		updateSendButton();
1741		updateEditablity();
1742	}
1743
1744	private void correctMessage(Message message) {
1745		while (message.mergeable(message.next())) {
1746			message = message.next();
1747		}
1748		this.conversation.setCorrectingMessage(message);
1749		final Editable editable = binding.textinput.getText();
1750		this.conversation.setDraftMessage(editable.toString());
1751		this.binding.textinput.setText("");
1752		this.binding.textinput.append(message.getBody());
1753
1754	}
1755
1756	private void highlightInConference(String nick) {
1757		final Editable editable = this.binding.textinput.getText();
1758		String oldString = editable.toString().trim();
1759		final int pos = this.binding.textinput.getSelectionStart();
1760		if (oldString.isEmpty() || pos == 0) {
1761			editable.insert(0, nick + ": ");
1762		} else {
1763			final char before = editable.charAt(pos - 1);
1764			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1765			if (before == '\n') {
1766				editable.insert(pos, nick + ": ");
1767			} else {
1768				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1769					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1770						editable.insert(pos - 2, ", " + nick);
1771						return;
1772					}
1773				}
1774				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1775				if (Character.isWhitespace(after)) {
1776					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1777				}
1778			}
1779		}
1780	}
1781
1782	@Override
1783	public void onSaveInstanceState(Bundle outState) {
1784		super.onSaveInstanceState(outState);
1785		if (conversation != null) {
1786			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1787			outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1788			final Uri uri = pendingTakePhotoUri.peek();
1789			if (uri != null) {
1790				outState.putString(STATE_PHOTO_URI, uri.toString());
1791			}
1792			final ScrollState scrollState = getScrollPosition();
1793			if (scrollState != null) {
1794				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1795			}
1796		}
1797	}
1798
1799	@Override
1800	public void onActivityCreated(Bundle savedInstanceState) {
1801		super.onActivityCreated(savedInstanceState);
1802		if (savedInstanceState == null) {
1803			return;
1804		}
1805		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1806		pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1807		if (uuid != null) {
1808			QuickLoader.set(uuid);
1809			this.pendingConversationsUuid.push(uuid);
1810			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1811			if (takePhotoUri != null) {
1812				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1813			}
1814			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1815		}
1816	}
1817
1818	@Override
1819	public void onStart() {
1820		super.onStart();
1821		if (this.reInitRequiredOnStart && this.conversation != null) {
1822			final Bundle extras = pendingExtras.pop();
1823			reInit(this.conversation, extras != null);
1824			if (extras != null) {
1825				processExtras(extras);
1826			}
1827		} else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1828			final String uuid = pendingConversationsUuid.pop();
1829			Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1830			if (uuid != null) {
1831				findAndReInitByUuidOrArchive(uuid);
1832			}
1833		}
1834	}
1835
1836	@Override
1837	public void onStop() {
1838		super.onStop();
1839		final Activity activity = getActivity();
1840		if (activity == null || !activity.isChangingConfigurations()) {
1841			hideSoftKeyboard(activity);
1842			messageListAdapter.stopAudioPlayer();
1843		}
1844		if (this.conversation != null) {
1845			final String msg = this.binding.textinput.getText().toString();
1846			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1847				this.activity.xmppConnectionService.updateConversation(this.conversation);
1848			}
1849			updateChatState(this.conversation, msg);
1850			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1851		}
1852		this.reInitRequiredOnStart = true;
1853	}
1854
1855	private void updateChatState(final Conversation conversation, final String msg) {
1856		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1857		Account.State status = conversation.getAccount().getStatus();
1858		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1859			activity.xmppConnectionService.sendChatState(conversation);
1860		}
1861	}
1862
1863	private void saveMessageDraftStopAudioPlayer() {
1864		final Conversation previousConversation = this.conversation;
1865		if (this.activity == null || this.binding == null || previousConversation == null) {
1866			return;
1867		}
1868		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1869		final String msg = this.binding.textinput.getText().toString();
1870		if (previousConversation.setNextMessage(msg)) {
1871			activity.xmppConnectionService.updateConversation(previousConversation);
1872		}
1873		updateChatState(this.conversation, msg);
1874		messageListAdapter.stopAudioPlayer();
1875	}
1876
1877	public void reInit(Conversation conversation, Bundle extras) {
1878		QuickLoader.set(conversation.getUuid());
1879		this.saveMessageDraftStopAudioPlayer();
1880		if (this.reInit(conversation, extras != null)) {
1881			if (extras != null) {
1882				processExtras(extras);
1883			}
1884			this.reInitRequiredOnStart = false;
1885		} else {
1886			this.reInitRequiredOnStart = true;
1887			pendingExtras.push(extras);
1888		}
1889		resetUnreadMessagesCount();
1890	}
1891
1892	private void reInit(Conversation conversation) {
1893		reInit(conversation, false);
1894	}
1895
1896	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1897		if (conversation == null) {
1898			return false;
1899		}
1900		this.conversation = conversation;
1901		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1902		if (this.activity == null || this.binding == null) {
1903			return false;
1904		}
1905
1906		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1907			activity.onConversationArchived(this.conversation);
1908			return false;
1909		}
1910
1911		stopScrolling();
1912		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1913
1914		if (this.conversation.isRead() && hasExtras) {
1915			Log.d(Config.LOGTAG, "trimming conversation");
1916			this.conversation.trim();
1917		}
1918
1919		setupIme();
1920
1921		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1922
1923		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1924		this.binding.textinput.setKeyboardListener(null);
1925		this.binding.textinput.setText("");
1926		this.binding.textinput.append(this.conversation.getNextMessage());
1927		this.binding.textinput.setKeyboardListener(this);
1928		messageListAdapter.updatePreferences();
1929		refresh(false);
1930		this.conversation.messagesLoaded.set(true);
1931		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1932
1933		if (hasExtras || scrolledToBottomAndNoPending) {
1934			resetUnreadMessagesCount();
1935			synchronized (this.messageList) {
1936				Log.d(Config.LOGTAG, "jump to first unread message");
1937				final Message first = conversation.getFirstUnreadMessage();
1938				final int bottom = Math.max(0, this.messageList.size() - 1);
1939				final int pos;
1940				final boolean jumpToBottom;
1941				if (first == null) {
1942					pos = bottom;
1943					jumpToBottom = true;
1944				} else {
1945					int i = getIndexOf(first.getUuid(), this.messageList);
1946					pos = i < 0 ? bottom : i;
1947					jumpToBottom = false;
1948				}
1949				setSelection(pos, jumpToBottom);
1950			}
1951		}
1952
1953
1954		this.binding.messagesView.post(this::fireReadEvent);
1955		//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
1956		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1957		return true;
1958	}
1959
1960	private void resetUnreadMessagesCount() {
1961		lastMessageUuid = null;
1962		hideUnreadMessagesCount();
1963	}
1964
1965	private void hideUnreadMessagesCount() {
1966		if (this.binding == null) {
1967			return;
1968		}
1969		this.binding.scrollToBottomButton.setEnabled(false);
1970		this.binding.scrollToBottomButton.setVisibility(View.GONE);
1971		this.binding.unreadCountCustomView.setVisibility(View.GONE);
1972	}
1973
1974	private void setSelection(int pos, boolean jumpToBottom) {
1975		setSelection(this.binding.messagesView, pos, jumpToBottom);
1976		this.binding.messagesView.post(() -> setSelection(this.binding.messagesView, pos, jumpToBottom));
1977		this.binding.messagesView.post(this::fireReadEvent);
1978	}
1979
1980	private static void setSelection(final ListView listView, int pos, boolean jumpToBottom) {
1981		if (jumpToBottom) {
1982			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
1983			if (lastChild != null) {
1984				listView.setSelectionFromTop(pos, -lastChild.getHeight());
1985				return;
1986			}
1987		}
1988		listView.setSelection(pos);
1989	}
1990
1991	private boolean scrolledToBottom() {
1992		return this.binding != null && scrolledToBottom(this.binding.messagesView);
1993	}
1994
1995	private void processExtras(Bundle extras) {
1996		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1997		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1998		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1999		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2000		if (nick != null) {
2001			if (pm) {
2002				Jid jid = conversation.getJid();
2003				try {
2004					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2005					privateMessageWith(next);
2006				} catch (final IllegalArgumentException ignored) {
2007					//do nothing
2008				}
2009			} else {
2010				final MucOptions mucOptions = conversation.getMucOptions();
2011				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2012					highlightInConference(nick);
2013				}
2014			}
2015		} else {
2016			appendText(text);
2017		}
2018		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2019		if (message != null) {
2020			startDownloadable(message);
2021		}
2022	}
2023
2024	private boolean showBlockSubmenu(View view) {
2025		final Jid jid = conversation.getJid();
2026		if (jid.getLocal() == null) {
2027			BlockContactDialog.show(activity, conversation);
2028		} else {
2029			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2030			popupMenu.inflate(R.menu.block);
2031			popupMenu.setOnMenuItemClickListener(menuItem -> {
2032				Blockable blockable;
2033				switch (menuItem.getItemId()) {
2034					case R.id.block_domain:
2035						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2036						break;
2037					default:
2038						blockable = conversation;
2039				}
2040				BlockContactDialog.show(activity, blockable);
2041				return true;
2042			});
2043			popupMenu.show();
2044		}
2045		return true;
2046	}
2047
2048	private void updateSnackBar(final Conversation conversation) {
2049		final Account account = conversation.getAccount();
2050		final XmppConnection connection = account.getXmppConnection();
2051		final int mode = conversation.getMode();
2052		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2053		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2054			return;
2055		}
2056		if (account.getStatus() == Account.State.DISABLED) {
2057			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2058		} else if (conversation.isBlocked()) {
2059			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2060		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2061			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2062		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2063			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2064		} else if (mode == Conversation.MODE_MULTI
2065				&& !conversation.getMucOptions().online()
2066				&& account.getStatus() == Account.State.ONLINE) {
2067			switch (conversation.getMucOptions().getError()) {
2068				case NICK_IN_USE:
2069					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2070					break;
2071				case NO_RESPONSE:
2072					showSnackbar(R.string.joining_conference, 0, null);
2073					break;
2074				case SERVER_NOT_FOUND:
2075					if (conversation.receivedMessagesCount() > 0) {
2076						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2077					} else {
2078						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2079					}
2080					break;
2081				case PASSWORD_REQUIRED:
2082					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2083					break;
2084				case BANNED:
2085					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2086					break;
2087				case MEMBERS_ONLY:
2088					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2089					break;
2090				case KICKED:
2091					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2092					break;
2093				case UNKNOWN:
2094					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2095					break;
2096				case INVALID_NICK:
2097					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2098				case SHUTDOWN:
2099					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2100					break;
2101				default:
2102					hideSnackbar();
2103					break;
2104			}
2105		} else if (account.hasPendingPgpIntent(conversation)) {
2106			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2107		} else if (connection != null
2108				&& connection.getFeatures().blocking()
2109				&& conversation.countMessages() != 0
2110				&& !conversation.isBlocked()
2111				&& conversation.isWithStranger()) {
2112			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2113		} else {
2114			hideSnackbar();
2115		}
2116	}
2117
2118	@Override
2119	public void refresh() {
2120		if (this.binding == null) {
2121			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2122			return;
2123		}
2124		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2125			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2126				activity.onConversationArchived(this.conversation);
2127				return;
2128			}
2129		}
2130		this.refresh(true);
2131	}
2132
2133	private void refresh(boolean notifyConversationRead) {
2134		synchronized (this.messageList) {
2135			if (this.conversation != null) {
2136				conversation.populateWithMessages(this.messageList);
2137				updateSnackBar(conversation);
2138				updateStatusMessages();
2139				if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2140					binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2141					binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2142				}
2143				this.messageListAdapter.notifyDataSetChanged();
2144				updateChatMsgHint();
2145				if (notifyConversationRead && activity != null) {
2146					binding.messagesView.post(this::fireReadEvent);
2147				}
2148				updateSendButton();
2149				updateEditablity();
2150			}
2151		}
2152	}
2153
2154	protected void messageSent() {
2155		mSendingPgpMessage.set(false);
2156		this.binding.textinput.setText("");
2157		if (conversation.setCorrectingMessage(null)) {
2158			this.binding.textinput.append(conversation.getDraftMessage());
2159			conversation.setDraftMessage(null);
2160		}
2161		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2162			activity.xmppConnectionService.updateConversation(conversation);
2163		}
2164		updateChatMsgHint();
2165		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2166		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2167		if (prefScrollToBottom || scrolledToBottom()) {
2168			new Handler().post(() -> {
2169				int size = messageList.size();
2170				this.binding.messagesView.setSelection(size - 1);
2171			});
2172		}
2173	}
2174
2175	public void doneSendingPgpMessage() {
2176		mSendingPgpMessage.set(false);
2177	}
2178
2179	public long getMaxHttpUploadSize(Conversation conversation) {
2180		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2181		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2182	}
2183
2184	private void updateEditablity() {
2185		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2186		this.binding.textinput.setFocusable(canWrite);
2187		this.binding.textinput.setFocusableInTouchMode(canWrite);
2188		this.binding.textSendButton.setEnabled(canWrite);
2189		this.binding.textinput.setCursorVisible(canWrite);
2190	}
2191
2192	public void updateSendButton() {
2193		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2194		final Conversation c = this.conversation;
2195		final Presence.Status status;
2196		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2197		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2198		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2199			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2200				status = Presence.Status.OFFLINE;
2201			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2202				status = c.getContact().getShownStatus();
2203			} else {
2204				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2205			}
2206		} else {
2207			status = Presence.Status.OFFLINE;
2208		}
2209		this.binding.textSendButton.setTag(action);
2210		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2211	}
2212
2213	protected void updateDateSeparators() {
2214		synchronized (this.messageList) {
2215			for (int i = 0; i < this.messageList.size(); ++i) {
2216				final Message current = this.messageList.get(i);
2217				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2218					this.messageList.add(i, Message.createDateSeparator(current));
2219					i++;
2220				}
2221			}
2222		}
2223	}
2224
2225	protected void updateStatusMessages() {
2226		updateDateSeparators();
2227		synchronized (this.messageList) {
2228			if (showLoadMoreMessages(conversation)) {
2229				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2230			}
2231			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2232				ChatState state = conversation.getIncomingChatState();
2233				if (state == ChatState.COMPOSING) {
2234					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2235				} else if (state == ChatState.PAUSED) {
2236					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2237				} else {
2238					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2239						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2240							return;
2241						} else {
2242							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2243								this.messageList.add(i + 1,
2244										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2245								return;
2246							}
2247						}
2248					}
2249				}
2250			} else {
2251				final MucOptions mucOptions = conversation.getMucOptions();
2252				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2253				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2254				ChatState state = ChatState.COMPOSING;
2255				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2256				if (users.size() == 0) {
2257					state = ChatState.PAUSED;
2258					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2259				}
2260				if (mucOptions.isPrivateAndNonAnonymous()) {
2261					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2262						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2263						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2264						for (ReadByMarker marker : markersForMessage) {
2265							if (!ReadByMarker.contains(marker, addedMarkers)) {
2266								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2267								MucOptions.User user = mucOptions.findUser(marker);
2268								if (user != null && !users.contains(user)) {
2269									shownMarkers.add(user);
2270								}
2271							}
2272						}
2273						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2274						final Message statusMessage;
2275						final int size = shownMarkers.size();
2276						if (size > 1) {
2277							final String body;
2278							if (size <= 4) {
2279								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2280							} else {
2281								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2282							}
2283							statusMessage = Message.createStatusMessage(conversation, body);
2284							statusMessage.setCounterparts(shownMarkers);
2285						} else if (size == 1) {
2286							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2287							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2288							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2289						} else {
2290							statusMessage = null;
2291						}
2292						if (statusMessage != null) {
2293							this.messageList.add(i + 1, statusMessage);
2294						}
2295						addedMarkers.add(markerForSender);
2296						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2297							break;
2298						}
2299					}
2300				}
2301				if (users.size() > 0) {
2302					Message statusMessage;
2303					if (users.size() == 1) {
2304						MucOptions.User user = users.get(0);
2305						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2306						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2307						statusMessage.setTrueCounterpart(user.getRealJid());
2308						statusMessage.setCounterpart(user.getFullJid());
2309					} else {
2310						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2311						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2312						statusMessage.setCounterparts(users);
2313					}
2314					this.messageList.add(statusMessage);
2315				}
2316
2317			}
2318		}
2319	}
2320
2321	private void stopScrolling() {
2322		long now = SystemClock.uptimeMillis();
2323		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2324		binding.messagesView.dispatchTouchEvent(cancel);
2325	}
2326
2327	private boolean showLoadMoreMessages(final Conversation c) {
2328		if (activity == null || activity.xmppConnectionService == null) {
2329			return false;
2330		}
2331		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2332		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2333		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2334	}
2335
2336	private boolean hasMamSupport(final Conversation c) {
2337		if (c.getMode() == Conversation.MODE_SINGLE) {
2338			final XmppConnection connection = c.getAccount().getXmppConnection();
2339			return connection != null && connection.getFeatures().mam();
2340		} else {
2341			return c.getMucOptions().mamSupport();
2342		}
2343	}
2344
2345	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2346		showSnackbar(message, action, clickListener, null);
2347	}
2348
2349	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2350		this.binding.snackbar.setVisibility(View.VISIBLE);
2351		this.binding.snackbar.setOnClickListener(null);
2352		this.binding.snackbarMessage.setText(message);
2353		this.binding.snackbarMessage.setOnClickListener(null);
2354		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2355		if (action != 0) {
2356			this.binding.snackbarAction.setText(action);
2357		}
2358		this.binding.snackbarAction.setOnClickListener(clickListener);
2359		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2360	}
2361
2362	protected void hideSnackbar() {
2363		this.binding.snackbar.setVisibility(View.GONE);
2364	}
2365
2366	protected void sendMessage(Message message) {
2367		activity.xmppConnectionService.sendMessage(message);
2368		messageSent();
2369	}
2370
2371	protected void sendPgpMessage(final Message message) {
2372		final XmppConnectionService xmppService = activity.xmppConnectionService;
2373		final Contact contact = message.getConversation().getContact();
2374		if (!activity.hasPgp()) {
2375			activity.showInstallPgpDialog();
2376			return;
2377		}
2378		if (conversation.getAccount().getPgpSignature() == null) {
2379			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2380			return;
2381		}
2382		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2383			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2384		}
2385		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2386			if (contact.getPgpKeyId() != 0) {
2387				xmppService.getPgpEngine().hasKey(contact,
2388						new UiCallback<Contact>() {
2389
2390							@Override
2391							public void userInputRequried(PendingIntent pi, Contact contact) {
2392								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2393							}
2394
2395							@Override
2396							public void success(Contact contact) {
2397								encryptTextMessage(message);
2398							}
2399
2400							@Override
2401							public void error(int error, Contact contact) {
2402								activity.runOnUiThread(() -> Toast.makeText(activity,
2403										R.string.unable_to_connect_to_keychain,
2404										Toast.LENGTH_SHORT
2405								).show());
2406								mSendingPgpMessage.set(false);
2407							}
2408						});
2409
2410			} else {
2411				showNoPGPKeyDialog(false, (dialog, which) -> {
2412					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2413					xmppService.updateConversation(conversation);
2414					message.setEncryption(Message.ENCRYPTION_NONE);
2415					xmppService.sendMessage(message);
2416					messageSent();
2417				});
2418			}
2419		} else {
2420			if (conversation.getMucOptions().pgpKeysInUse()) {
2421				if (!conversation.getMucOptions().everybodyHasKeys()) {
2422					Toast warning = Toast
2423							.makeText(getActivity(),
2424									R.string.missing_public_keys,
2425									Toast.LENGTH_LONG);
2426					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2427					warning.show();
2428				}
2429				encryptTextMessage(message);
2430			} else {
2431				showNoPGPKeyDialog(true, (dialog, which) -> {
2432					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2433					message.setEncryption(Message.ENCRYPTION_NONE);
2434					xmppService.updateConversation(conversation);
2435					xmppService.sendMessage(message);
2436					messageSent();
2437				});
2438			}
2439		}
2440	}
2441
2442	public void encryptTextMessage(Message message) {
2443		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2444				new UiCallback<Message>() {
2445
2446					@Override
2447					public void userInputRequried(PendingIntent pi, Message message) {
2448						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2449					}
2450
2451					@Override
2452					public void success(Message message) {
2453						//TODO the following two call can be made before the callback
2454						getActivity().runOnUiThread(() -> messageSent());
2455					}
2456
2457					@Override
2458					public void error(final int error, Message message) {
2459						getActivity().runOnUiThread(() -> {
2460							doneSendingPgpMessage();
2461							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2462						});
2463
2464					}
2465				});
2466	}
2467
2468	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2469		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2470		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2471		if (plural) {
2472			builder.setTitle(getString(R.string.no_pgp_keys));
2473			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2474		} else {
2475			builder.setTitle(getString(R.string.no_pgp_key));
2476			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2477		}
2478		builder.setNegativeButton(getString(R.string.cancel), null);
2479		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2480		builder.create().show();
2481	}
2482
2483	public void appendText(String text) {
2484		if (text == null) {
2485			return;
2486		}
2487		String previous = this.binding.textinput.getText().toString();
2488		if (previous.length() != 0 && !previous.endsWith(" ")) {
2489			text = " " + text;
2490		}
2491		this.binding.textinput.append(text);
2492	}
2493
2494	@Override
2495	public boolean onEnterPressed() {
2496		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2497		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2498		if (enterIsSend) {
2499			sendMessage();
2500			return true;
2501		} else {
2502			return false;
2503		}
2504	}
2505
2506	@Override
2507	public void onTypingStarted() {
2508		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2509		if (service == null) {
2510			return;
2511		}
2512		Account.State status = conversation.getAccount().getStatus();
2513		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2514			service.sendChatState(conversation);
2515		}
2516		updateSendButton();
2517	}
2518
2519	@Override
2520	public void onTypingStopped() {
2521		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2522		if (service == null) {
2523			return;
2524		}
2525		Account.State status = conversation.getAccount().getStatus();
2526		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2527			service.sendChatState(conversation);
2528		}
2529	}
2530
2531	@Override
2532	public void onTextDeleted() {
2533		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2534		if (service == null) {
2535			return;
2536		}
2537		Account.State status = conversation.getAccount().getStatus();
2538		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2539			service.sendChatState(conversation);
2540		}
2541		updateSendButton();
2542	}
2543
2544	@Override
2545	public void onTextChanged() {
2546		if (conversation != null && conversation.getCorrectingMessage() != null) {
2547			updateSendButton();
2548		}
2549	}
2550
2551	@Override
2552	public boolean onTabPressed(boolean repeated) {
2553		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2554			return false;
2555		}
2556		if (repeated) {
2557			completionIndex++;
2558		} else {
2559			lastCompletionLength = 0;
2560			completionIndex = 0;
2561			final String content = this.binding.textinput.getText().toString();
2562			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2563			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2564			firstWord = start == 0;
2565			incomplete = content.substring(start, lastCompletionCursor);
2566		}
2567		List<String> completions = new ArrayList<>();
2568		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2569			String name = user.getName();
2570			if (name != null && name.startsWith(incomplete)) {
2571				completions.add(name + (firstWord ? ": " : " "));
2572			}
2573		}
2574		Collections.sort(completions);
2575		if (completions.size() > completionIndex) {
2576			String completion = completions.get(completionIndex).substring(incomplete.length());
2577			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2578			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2579			lastCompletionLength = completion.length();
2580		} else {
2581			completionIndex = -1;
2582			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2583			lastCompletionLength = 0;
2584		}
2585		return true;
2586	}
2587
2588	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2589		try {
2590			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2591		} catch (final SendIntentException ignored) {
2592		}
2593	}
2594
2595	@Override
2596	public void onBackendConnected() {
2597		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2598		String uuid = pendingConversationsUuid.pop();
2599		if (uuid != null) {
2600			if (!findAndReInitByUuidOrArchive(uuid)) {
2601				return;
2602			}
2603		} else {
2604			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2605				clearPending();
2606				activity.onConversationArchived(conversation);
2607				return;
2608			}
2609		}
2610		ActivityResult activityResult = postponedActivityResult.pop();
2611		if (activityResult != null) {
2612			handleActivityResult(activityResult);
2613		}
2614		clearPending();
2615	}
2616
2617	private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2618		Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2619		if (conversation == null) {
2620			clearPending();
2621			activity.onConversationArchived(null);
2622			return false;
2623		}
2624		reInit(conversation);
2625		ScrollState scrollState = pendingScrollState.pop();
2626		String lastMessageUuid = pendingLastMessageUuid.pop();
2627		if (scrollState != null) {
2628			setScrollPosition(scrollState, lastMessageUuid);
2629		}
2630		return true;
2631	}
2632
2633	private void clearPending() {
2634		if (postponedActivityResult.pop() != null) {
2635			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2636		}
2637		pendingScrollState.pop();
2638		if (pendingTakePhotoUri.pop() != null) {
2639			Log.e(Config.LOGTAG, "cleared pending photo uri");
2640		}
2641	}
2642
2643	public Conversation getConversation() {
2644		return conversation;
2645	}
2646}