ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.content.SharedPreferences;
   7import android.content.pm.PackageManager;
   8import android.databinding.DataBindingUtil;
   9import android.net.Uri;
  10import android.os.Build;
  11import android.preference.PreferenceManager;
  12import android.provider.MediaStore;
  13import android.support.annotation.IdRes;
  14import android.support.annotation.NonNull;
  15import android.support.annotation.StringRes;
  16import android.support.v7.app.AlertDialog;
  17import android.app.Fragment;
  18import android.app.PendingIntent;
  19import android.content.ActivityNotFoundException;
  20import android.content.Context;
  21import android.content.DialogInterface;
  22import android.content.Intent;
  23import android.content.IntentSender.SendIntentException;
  24import android.os.Bundle;
  25import android.os.Handler;
  26import android.os.SystemClock;
  27import android.support.v13.view.inputmethod.InputConnectionCompat;
  28import android.support.v13.view.inputmethod.InputContentInfoCompat;
  29import android.text.Editable;
  30import android.util.Log;
  31import android.view.ContextMenu;
  32import android.view.ContextMenu.ContextMenuInfo;
  33import android.view.Gravity;
  34import android.view.LayoutInflater;
  35import android.view.Menu;
  36import android.view.MenuInflater;
  37import android.view.MenuItem;
  38import android.view.MotionEvent;
  39import android.view.View;
  40import android.view.View.OnClickListener;
  41import android.view.ViewGroup;
  42import android.view.inputmethod.EditorInfo;
  43import android.view.inputmethod.InputMethodManager;
  44import android.widget.AbsListView;
  45import android.widget.AbsListView.OnScrollListener;
  46import android.widget.AdapterView;
  47import android.widget.AdapterView.AdapterContextMenuInfo;
  48import android.widget.CheckBox;
  49import android.widget.ListView;
  50import android.widget.PopupMenu;
  51import android.widget.TextView.OnEditorActionListener;
  52import android.widget.Toast;
  53
  54import java.util.ArrayList;
  55import java.util.Arrays;
  56import java.util.Collections;
  57import java.util.HashSet;
  58import java.util.Iterator;
  59import java.util.List;
  60import java.util.Set;
  61import java.util.UUID;
  62import java.util.concurrent.atomic.AtomicBoolean;
  63
  64import eu.siacs.conversations.Config;
  65import eu.siacs.conversations.R;
  66import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  67import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  68import eu.siacs.conversations.databinding.FragmentConversationBinding;
  69import eu.siacs.conversations.entities.Account;
  70import eu.siacs.conversations.entities.Blockable;
  71import eu.siacs.conversations.entities.Contact;
  72import eu.siacs.conversations.entities.Conversation;
  73import eu.siacs.conversations.entities.DownloadableFile;
  74import eu.siacs.conversations.entities.Message;
  75import eu.siacs.conversations.entities.MucOptions;
  76import eu.siacs.conversations.entities.Presence;
  77import eu.siacs.conversations.entities.ReadByMarker;
  78import eu.siacs.conversations.entities.Transferable;
  79import eu.siacs.conversations.entities.TransferablePlaceholder;
  80import eu.siacs.conversations.http.HttpDownloadConnection;
  81import eu.siacs.conversations.persistance.FileBackend;
  82import eu.siacs.conversations.services.MessageArchiveService;
  83import eu.siacs.conversations.services.XmppConnectionService;
  84import eu.siacs.conversations.ui.adapter.MessageAdapter;
  85import eu.siacs.conversations.ui.util.ActivityResult;
  86import eu.siacs.conversations.ui.util.AttachmentTool;
  87import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  88import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.ScrollState;
  92import eu.siacs.conversations.ui.util.SendButtonAction;
  93import eu.siacs.conversations.ui.util.SendButtonTool;
  94import eu.siacs.conversations.ui.widget.EditMessage;
  95import eu.siacs.conversations.utils.ExceptionHelper;
  96import eu.siacs.conversations.utils.MessageUtils;
  97import eu.siacs.conversations.utils.NickValidityChecker;
  98import eu.siacs.conversations.utils.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	final protected 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								final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 218								Message message = null;
 219								int childPos;
 220								for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 221									message = messageList.get(oldPosition + childPos);
 222									if (message.getType() != Message.TYPE_STATUS) {
 223										break;
 224									}
 225								}
 226								final String uuid = message != null ? message.getUuid() : null;
 227								View v = binding.messagesView.getChildAt(childPos);
 228								final int pxOffset = (v == null) ? 0 : v.getTop();
 229								ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 230								try {
 231									updateStatusMessages();
 232								} catch (IllegalStateException e) {
 233									Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 234								}
 235								messageListAdapter.notifyDataSetChanged();
 236								int pos = Math.max(getIndexOf(uuid, messageList), 0);
 237								binding.messagesView.setSelectionFromTop(pos, pxOffset);
 238								if (messageLoaderToast != null) {
 239									messageLoaderToast.cancel();
 240								}
 241								conversation.messagesLoaded.set(true);
 242							});
 243						}
 244
 245						@Override
 246						public void informUser(final int resId) {
 247
 248							runOnUiThread(() -> {
 249								if (messageLoaderToast != null) {
 250									messageLoaderToast.cancel();
 251								}
 252								if (ConversationFragment.this.conversation != conversation) {
 253									return;
 254								}
 255								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 256								messageLoaderToast.show();
 257							});
 258
 259						}
 260					});
 261
 262				}
 263			}
 264		}
 265	};
 266	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 267		@Override
 268		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 269			// try to get permission to read the image, if applicable
 270			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 271				try {
 272					inputContentInfo.requestPermission();
 273				} catch (Exception e) {
 274					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 275					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 276					).show();
 277					return false;
 278				}
 279			}
 280			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 281				attachImageToConversation(inputContentInfo.getContentUri());
 282			} else {
 283				mPendingEditorContent = inputContentInfo.getContentUri();
 284			}
 285			return true;
 286		}
 287	};
 288	private Message selectedMessage;
 289	private OnClickListener mEnableAccountListener = new OnClickListener() {
 290		@Override
 291		public void onClick(View v) {
 292			final Account account = conversation == null ? null : conversation.getAccount();
 293			if (account != null) {
 294				account.setOption(Account.OPTION_DISABLED, false);
 295				activity.xmppConnectionService.updateAccount(account);
 296			}
 297		}
 298	};
 299	private OnClickListener mUnblockClickListener = new OnClickListener() {
 300		@Override
 301		public void onClick(final View v) {
 302			v.post(() -> v.setVisibility(View.INVISIBLE));
 303			if (conversation.isDomainBlocked()) {
 304				BlockContactDialog.show(activity, conversation);
 305			} else {
 306				unblockConversation(conversation);
 307			}
 308		}
 309	};
 310	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 311	private OnClickListener mAddBackClickListener = new OnClickListener() {
 312
 313		@Override
 314		public void onClick(View v) {
 315			final Contact contact = conversation == null ? null : conversation.getContact();
 316			if (contact != null) {
 317				activity.xmppConnectionService.createContact(contact, true);
 318				activity.switchToContactDetails(contact);
 319			}
 320		}
 321	};
 322	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 323	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 324		@Override
 325		public void onClick(View v) {
 326			final Contact contact = conversation == null ? null : conversation.getContact();
 327			if (contact != null) {
 328				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 329						activity.xmppConnectionService.getPresenceGenerator()
 330								.sendPresenceUpdatesTo(contact));
 331				hideSnackbar();
 332			}
 333		}
 334	};
 335	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 336
 337		@Override
 338		public void onClick(View v) {
 339			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 340			if (pendingIntent != null) {
 341				try {
 342					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 343							REQUEST_DECRYPT_PGP,
 344							null,
 345							0,
 346							0,
 347							0);
 348				} catch (SendIntentException e) {
 349					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 350					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 351				}
 352			}
 353			updateSnackBar(conversation);
 354		}
 355	};
 356	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 357	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 358		if (actionId == EditorInfo.IME_ACTION_SEND) {
 359			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 360			if (imm != null && imm.isFullscreenMode()) {
 361				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 362			}
 363			sendMessage();
 364			return true;
 365		} else {
 366			return false;
 367		}
 368	};
 369	private OnClickListener mScrollButtonListener = new OnClickListener() {
 370
 371		@Override
 372		public void onClick(View v) {
 373			stopScrolling();
 374			setSelection(binding.messagesView.getCount() - 1);
 375		}
 376	};
 377	private OnClickListener mSendButtonListener = new OnClickListener() {
 378
 379		@Override
 380		public void onClick(View v) {
 381			Object tag = v.getTag();
 382			if (tag instanceof SendButtonAction) {
 383				SendButtonAction action = (SendButtonAction) tag;
 384				switch (action) {
 385					case TAKE_PHOTO:
 386					case RECORD_VIDEO:
 387					case SEND_LOCATION:
 388					case RECORD_VOICE:
 389					case CHOOSE_PICTURE:
 390						attachFile(action.toChoice());
 391						break;
 392					case CANCEL:
 393						if (conversation != null) {
 394							if (conversation.setCorrectingMessage(null)) {
 395								binding.textinput.setText("");
 396								binding.textinput.append(conversation.getDraftMessage());
 397								conversation.setDraftMessage(null);
 398							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 399								conversation.setNextCounterpart(null);
 400							}
 401							updateChatMsgHint();
 402							updateSendButton();
 403							updateEditablity();
 404						}
 405						break;
 406					default:
 407						sendMessage();
 408				}
 409			} else {
 410				sendMessage();
 411			}
 412		}
 413	};
 414	private int completionIndex = 0;
 415	private int lastCompletionLength = 0;
 416	private String incomplete;
 417	private int lastCompletionCursor;
 418	private boolean firstWord = false;
 419	private Message mPendingDownloadableMessage;
 420
 421	private static ConversationFragment findConversationFragment(Activity activity) {
 422		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 423		if (fragment != null && fragment instanceof ConversationFragment) {
 424			return (ConversationFragment) fragment;
 425		}
 426		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 427		if (fragment != null && fragment instanceof ConversationFragment) {
 428			return (ConversationFragment) fragment;
 429		}
 430		return null;
 431	}
 432
 433	public static void startStopPending(Activity activity) {
 434		ConversationFragment fragment = findConversationFragment(activity);
 435		if (fragment != null) {
 436			fragment.messageListAdapter.startStopPending();
 437		}
 438	}
 439
 440	public static void downloadFile(Activity activity, Message message) {
 441		ConversationFragment fragment = findConversationFragment(activity);
 442		if (fragment != null) {
 443			fragment.startDownloadable(message);
 444		}
 445	}
 446
 447	public static void registerPendingMessage(Activity activity, Message message) {
 448		ConversationFragment fragment = findConversationFragment(activity);
 449		if (fragment != null) {
 450			fragment.pendingMessage.push(message);
 451		}
 452	}
 453
 454	public static void openPendingMessage(Activity activity) {
 455		ConversationFragment fragment = findConversationFragment(activity);
 456		if (fragment != null) {
 457			Message message = fragment.pendingMessage.pop();
 458			if (message != null) {
 459				fragment.messageListAdapter.openDownloadable(message);
 460			}
 461		}
 462	}
 463
 464	public static Conversation getConversation(Activity activity) {
 465		return getConversation(activity, R.id.secondary_fragment);
 466	}
 467
 468	private static Conversation getConversation(Activity activity, @IdRes int res) {
 469		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 470		if (fragment != null && fragment instanceof ConversationFragment) {
 471			return ((ConversationFragment) fragment).getConversation();
 472		} else {
 473			return null;
 474		}
 475	}
 476
 477	public static Conversation getConversationReliable(Activity activity) {
 478		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 479		if (conversation != null) {
 480			return conversation;
 481		}
 482		return getConversation(activity, R.id.main_fragment);
 483	}
 484
 485	private static boolean allGranted(int[] grantResults) {
 486		for (int grantResult : grantResults) {
 487			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 488				return false;
 489			}
 490		}
 491		return true;
 492	}
 493
 494	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 495		for (int i = 0; i < grantResults.length; ++i) {
 496			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 497				return permissions[i];
 498			}
 499		}
 500		return null;
 501	}
 502
 503	private static void hideSoftKeyboard(final Activity activity) {
 504		InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 505		View view = activity.getCurrentFocus();
 506		if (view != null && imm != null) {
 507			imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 508		}
 509	}
 510
 511	private static boolean scrolledToBottom(AbsListView listView) {
 512		final int count = listView.getCount();
 513		if (count == 0) {
 514			return true;
 515		} else if (listView.getLastVisiblePosition() == count - 1) {
 516			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 517			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 518		} else {
 519			return false;
 520		}
 521	}
 522
 523	private void toggleScrollDownButton() {
 524		toggleScrollDownButton(binding.messagesView);
 525	}
 526
 527	private void toggleScrollDownButton(AbsListView listView) {
 528		if (conversation == null) {
 529			return;
 530		}
 531		if (scrolledToBottom(listView)) {
 532			lastMessageUuid = null;
 533			hideUnreadMessagesCount();
 534		} else {
 535			binding.scrollToBottomButton.setEnabled(true);
 536			binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 537			if (lastMessageUuid == null) {
 538				lastMessageUuid = conversation.getLatestMessage().getUuid();
 539			}
 540			if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 541				binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 542			}
 543		}
 544	}
 545
 546	private int getIndexOf(String uuid, List<Message> messages) {
 547		if (uuid == null) {
 548			return messages.size() - 1;
 549		}
 550		for (int i = 0; i < messages.size(); ++i) {
 551			if (uuid.equals(messages.get(i).getUuid())) {
 552				return i;
 553			} else {
 554				Message next = messages.get(i);
 555				while (next != null && next.wasMergedIntoPrevious()) {
 556					if (uuid.equals(next.getUuid())) {
 557						return i;
 558					}
 559					next = next.next();
 560				}
 561
 562			}
 563		}
 564		return -1;
 565	}
 566
 567	private ScrollState getScrollPosition() {
 568		final ListView listView = this.binding.messagesView;
 569		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 570			return null;
 571		} else {
 572			final int pos = listView.getFirstVisiblePosition();
 573			final View view = listView.getChildAt(0);
 574			if (view == null) {
 575				return null;
 576			} else {
 577				return new ScrollState(pos, view.getTop());
 578			}
 579		}
 580	}
 581
 582	private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 583		if (scrollPosition != null) {
 584
 585			this.lastMessageUuid = lastMessageUuid;
 586			if (lastMessageUuid != null) {
 587				binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 588			}
 589			//TODO maybe this needs a 'post'
 590			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 591			toggleScrollDownButton();
 592		}
 593	}
 594
 595	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 596		if (conversation == null) {
 597			return;
 598		}
 599		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 600
 601			@Override
 602			public void success(Message message) {
 603
 604			}
 605
 606			@Override
 607			public void error(int errorCode, Message object) {
 608				//TODO show possible pgp error
 609			}
 610
 611			@Override
 612			public void userInputRequried(PendingIntent pi, Message object) {
 613
 614			}
 615		});
 616	}
 617
 618	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 619		if (conversation == null) {
 620			return;
 621		}
 622		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 623		prepareFileToast.show();
 624		activity.delegateUriPermissionsToService(uri);
 625		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 626			@Override
 627			public void inform(final String text) {
 628				hidePrepareFileToast(prepareFileToast);
 629				runOnUiThread(() -> activity.replaceToast(text));
 630			}
 631
 632			@Override
 633			public void success(Message message) {
 634				runOnUiThread(() -> activity.hideToast());
 635				hidePrepareFileToast(prepareFileToast);
 636			}
 637
 638			@Override
 639			public void error(final int errorCode, Message message) {
 640				hidePrepareFileToast(prepareFileToast);
 641				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 642
 643			}
 644
 645			@Override
 646			public void userInputRequried(PendingIntent pi, Message message) {
 647				hidePrepareFileToast(prepareFileToast);
 648			}
 649		});
 650	}
 651
 652	public void attachImageToConversation(Uri uri) {
 653		this.attachImageToConversation(conversation, uri);
 654	}
 655
 656	private void attachImageToConversation(Conversation conversation, Uri uri) {
 657		if (conversation == null) {
 658			return;
 659		}
 660		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 661		prepareFileToast.show();
 662		activity.delegateUriPermissionsToService(uri);
 663		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 664				new UiCallback<Message>() {
 665
 666					@Override
 667					public void userInputRequried(PendingIntent pi, Message object) {
 668						hidePrepareFileToast(prepareFileToast);
 669					}
 670
 671					@Override
 672					public void success(Message message) {
 673						hidePrepareFileToast(prepareFileToast);
 674					}
 675
 676					@Override
 677					public void error(final int error, Message message) {
 678						hidePrepareFileToast(prepareFileToast);
 679						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 680					}
 681				});
 682	}
 683
 684	private void hidePrepareFileToast(final Toast prepareFileToast) {
 685		if (prepareFileToast != null && activity != null) {
 686			activity.runOnUiThread(prepareFileToast::cancel);
 687		}
 688	}
 689
 690	private void sendMessage() {
 691		final String body = this.binding.textinput.getText().toString();
 692		final Conversation conversation = this.conversation;
 693		if (body.length() == 0 || conversation == null) {
 694			return;
 695		}
 696		final Message message;
 697		if (conversation.getCorrectingMessage() == null) {
 698			message = new Message(conversation, body, conversation.getNextEncryption());
 699			if (conversation.getMode() == Conversation.MODE_MULTI) {
 700				final Jid nextCounterpart = conversation.getNextCounterpart();
 701				if (nextCounterpart != null) {
 702					message.setCounterpart(nextCounterpart);
 703					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 704					message.setType(Message.TYPE_PRIVATE);
 705				}
 706			}
 707		} else {
 708			message = conversation.getCorrectingMessage();
 709			message.setBody(body);
 710			message.setEdited(message.getUuid());
 711			message.setUuid(UUID.randomUUID().toString());
 712		}
 713		switch (message.getConversation().getNextEncryption()) {
 714			case Message.ENCRYPTION_PGP:
 715				sendPgpMessage(message);
 716				break;
 717			case Message.ENCRYPTION_AXOLOTL:
 718				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 719					sendMessage(message);
 720				}
 721				break;
 722			default:
 723				sendMessage(message);
 724		}
 725	}
 726
 727	protected boolean trustKeysIfNeeded(int requestCode) {
 728		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 729	}
 730
 731	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 732		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 733		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 734		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 735		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 736		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 737		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 738		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 739		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 740			axolotlService.createSessionsIfNeeded(conversation);
 741			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 742			String[] contacts = new String[targets.size()];
 743			for (int i = 0; i < contacts.length; ++i) {
 744				contacts[i] = targets.get(i).toString();
 745			}
 746			intent.putExtra("contacts", contacts);
 747			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 748			intent.putExtra("choice", attachmentChoice);
 749			intent.putExtra("conversation", conversation.getUuid());
 750			startActivityForResult(intent, requestCode);
 751			return true;
 752		} else {
 753			return false;
 754		}
 755	}
 756
 757	public void updateChatMsgHint() {
 758		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 759		if (conversation.getCorrectingMessage() != null) {
 760			this.binding.textinput.setHint(R.string.send_corrected_message);
 761		} else if (multi && conversation.getNextCounterpart() != null) {
 762			this.binding.textinput.setHint(getString(
 763					R.string.send_private_message_to,
 764					conversation.getNextCounterpart().getResource()));
 765		} else if (multi && !conversation.getMucOptions().participating()) {
 766			this.binding.textinput.setHint(R.string.you_are_not_participating);
 767		} else {
 768			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 769			getActivity().invalidateOptionsMenu();
 770		}
 771	}
 772
 773	public void setupIme() {
 774		this.binding.textinput.refreshIme();
 775	}
 776
 777	private void handleActivityResult(ActivityResult activityResult) {
 778		if (activityResult.resultCode == Activity.RESULT_OK) {
 779			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 780		} else {
 781			handleNegativeActivityResult(activityResult.requestCode);
 782		}
 783	}
 784
 785	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 786		switch (requestCode) {
 787			case REQUEST_TRUST_KEYS_TEXT:
 788				final String body = this.binding.textinput.getText().toString();
 789				Message message = new Message(conversation, body, conversation.getNextEncryption());
 790				sendMessage(message);
 791				break;
 792			case REQUEST_TRUST_KEYS_MENU:
 793				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 794				selectPresenceToAttachFile(choice);
 795				break;
 796			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 797				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 798				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 799					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 800					attachImageToConversation(conversation, i.next());
 801				}
 802				break;
 803			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 804				Uri takePhotoUri = pendingTakePhotoUri.pop();
 805				if (takePhotoUri != null) {
 806					attachImageToConversation(conversation, takePhotoUri);
 807				} else {
 808					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 809				}
 810				break;
 811			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 812			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 813			case ATTACHMENT_CHOICE_RECORD_VOICE:
 814				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 815				String type = data.getType();
 816				final PresenceSelector.OnPresenceSelected callback = () -> {
 817					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 818						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 819						attachFileToConversation(conversation, i.next(), type);
 820					}
 821				};
 822				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 823					callback.onPresenceSelected();
 824				} else {
 825					activity.selectPresence(conversation, callback);
 826				}
 827				break;
 828			case ATTACHMENT_CHOICE_LOCATION:
 829				double latitude = data.getDoubleExtra("latitude", 0);
 830				double longitude = data.getDoubleExtra("longitude", 0);
 831				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 832				attachLocationToConversation(conversation, geo);
 833				break;
 834			case REQUEST_INVITE_TO_CONVERSATION:
 835				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 836				if (invite != null) {
 837					if (invite.execute(activity)) {
 838						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 839						activity.mToast.show();
 840					}
 841				}
 842				break;
 843		}
 844	}
 845
 846	private void handleNegativeActivityResult(int requestCode) {
 847		switch (requestCode) {
 848			//nothing to do for now
 849		}
 850	}
 851
 852	@Override
 853	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 854		super.onActivityResult(requestCode, resultCode, data);
 855		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 856		if (activity != null && activity.xmppConnectionService != null) {
 857			handleActivityResult(activityResult);
 858		} else {
 859			this.postponedActivityResult.push(activityResult);
 860		}
 861	}
 862
 863	public void unblockConversation(final Blockable conversation) {
 864		activity.xmppConnectionService.sendUnblockRequest(conversation);
 865	}
 866
 867	@Override
 868	public void onAttach(Activity activity) {
 869		super.onAttach(activity);
 870		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 871		if (activity instanceof ConversationsActivity) {
 872			this.activity = (ConversationsActivity) activity;
 873		} else {
 874			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 875		}
 876	}
 877
 878	@Override
 879	public void onDetach() {
 880		super.onDetach();
 881		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 882	}
 883
 884	@Override
 885	public void onCreate(Bundle savedInstanceState) {
 886		super.onCreate(savedInstanceState);
 887		setHasOptionsMenu(true);
 888	}
 889
 890	@Override
 891	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 892		menuInflater.inflate(R.menu.fragment_conversation, menu);
 893		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 894		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 895		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 896		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 897		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 898
 899
 900		if (conversation != null) {
 901			if (conversation.getMode() == Conversation.MODE_MULTI) {
 902				menuContactDetails.setVisible(false);
 903				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 904			} else {
 905				menuContactDetails.setVisible(!this.conversation.withSelf());
 906				menuMucDetails.setVisible(false);
 907				final XmppConnectionService service = activity.xmppConnectionService;
 908				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 909			}
 910			if (conversation.isMuted()) {
 911				menuMute.setVisible(false);
 912			} else {
 913				menuUnmute.setVisible(false);
 914			}
 915			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 916			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 917		}
 918		super.onCreateOptionsMenu(menu, menuInflater);
 919	}
 920
 921	@Override
 922	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 923		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 924		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 925
 926		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 927
 928		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 929		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 930
 931		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 932
 933		binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 934		binding.messagesView.setOnScrollListener(mOnScrollListener);
 935		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 936		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 937		messageListAdapter.setOnContactPictureClicked(message -> {
 938			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 939			if (received) {
 940				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 941					Jid user = message.getCounterpart();
 942					if (user != null && !user.isBareJid()) {
 943						final MucOptions mucOptions = message.getConversation().getMucOptions();
 944						if (mucOptions.participating() || message.getConversation().getNextCounterpart() != null) {
 945							if (!mucOptions.isUserInRoom(user)) {
 946								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 947							}
 948							highlightInConference(user.getResource());
 949						} else {
 950							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 951						}
 952					}
 953					return;
 954				} else {
 955					if (!message.getContact().isSelf()) {
 956						String fingerprint;
 957						if (message.getEncryption() == Message.ENCRYPTION_PGP
 958								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 959							fingerprint = "pgp";
 960						} else {
 961							fingerprint = message.getFingerprint();
 962						}
 963						activity.switchToContactDetails(message.getContact(), fingerprint);
 964						return;
 965					}
 966				}
 967			}
 968			Account account = message.getConversation().getAccount();
 969			Intent intent = new Intent(activity, EditAccountActivity.class);
 970			intent.putExtra("jid", account.getJid().asBareJid().toString());
 971			String fingerprint;
 972			if (message.getEncryption() == Message.ENCRYPTION_PGP
 973					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 974				fingerprint = "pgp";
 975			} else {
 976				fingerprint = message.getFingerprint();
 977			}
 978			intent.putExtra("fingerprint", fingerprint);
 979			startActivity(intent);
 980		});
 981		messageListAdapter.setOnContactPictureLongClicked(message -> {
 982			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 983				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 984					final MucOptions mucOptions = conversation.getMucOptions();
 985					if (!mucOptions.allowPm()) {
 986						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 987						return;
 988					}
 989					Jid user = message.getCounterpart();
 990					if (user != null && !user.isBareJid()) {
 991						if (mucOptions.isUserInRoom(user)) {
 992							privateMessageWith(user);
 993						} else {
 994							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 995						}
 996					}
 997				}
 998			} else {
 999				activity.showQrCode(conversation.getAccount().getShareableUri());
1000			}
1001		});
1002		messageListAdapter.setOnQuoteListener(this::quoteText);
1003		binding.messagesView.setAdapter(messageListAdapter);
1004
1005		registerForContextMenu(binding.messagesView);
1006
1007		return binding.getRoot();
1008	}
1009
1010	private void quoteText(String text) {
1011		if (binding.textinput.isEnabled()) {
1012			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
1013			Editable editable = binding.textinput.getEditableText();
1014			int position = binding.textinput.getSelectionEnd();
1015			if (position == -1) position = editable.length();
1016			if (position > 0 && editable.charAt(position - 1) != '\n') {
1017				editable.insert(position++, "\n");
1018			}
1019			editable.insert(position, text);
1020			position += text.length();
1021			editable.insert(position++, "\n");
1022			if (position < editable.length() && editable.charAt(position) != '\n') {
1023				editable.insert(position, "\n");
1024			}
1025			binding.textinput.setSelection(position);
1026			binding.textinput.requestFocus();
1027			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1028			if (inputMethodManager != null) {
1029				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1030			}
1031		}
1032	}
1033
1034	private void quoteMessage(Message message) {
1035		quoteText(MessageUtils.prepareQuote(message));
1036	}
1037
1038	@Override
1039	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1040		synchronized (this.messageList) {
1041			super.onCreateContextMenu(menu, v, menuInfo);
1042			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1043			this.selectedMessage = this.messageList.get(acmi.position);
1044			populateContextMenu(menu);
1045		}
1046	}
1047
1048	private void populateContextMenu(ContextMenu menu) {
1049		final Message m = this.selectedMessage;
1050		final Transferable t = m.getTransferable();
1051		Message relevantForCorrection = m;
1052		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1053			relevantForCorrection = relevantForCorrection.next();
1054		}
1055		if (m.getType() != Message.TYPE_STATUS) {
1056
1057			if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1058				return;
1059			}
1060
1061			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
1062					&& m.getType() != Message.TYPE_PRIVATE
1063					&& !(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 (!treatAsFile && !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 ((treatAsFile && !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() && t instanceof TransferablePlaceholder && 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 && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
1112				cancelTransmission.setVisible(true);
1113			}
1114			if (treatAsFile) {
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.treatAsDownloadable()) {
1385				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1386				return;
1387			}
1388			if (!transferable.start()) {
1389				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1390			}
1391		} else if (message.treatAsDownloadable()) {
1392			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1393		}
1394	}
1395
1396	@SuppressLint("InflateParams")
1397	protected void clearHistoryDialog(final Conversation conversation) {
1398		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1399		builder.setTitle(getString(R.string.clear_conversation_history));
1400		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1401		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1402		builder.setView(dialogView);
1403		builder.setNegativeButton(getString(R.string.cancel), null);
1404		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1405			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1406			if (endConversationCheckBox.isChecked()) {
1407				this.activity.xmppConnectionService.archiveConversation(conversation);
1408				this.activity.onConversationArchived(conversation);
1409			} else {
1410				activity.onConversationsListItemUpdated();
1411				refresh();
1412			}
1413		});
1414		builder.create().show();
1415	}
1416
1417	protected void muteConversationDialog(final Conversation conversation) {
1418		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1419		builder.setTitle(R.string.disable_notifications);
1420		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1421		final CharSequence[] labels = new CharSequence[durations.length];
1422		for (int i = 0; i < durations.length; ++i) {
1423			if (durations[i] == -1) {
1424				labels[i] = getString(R.string.until_further_notice);
1425			} else {
1426				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1427			}
1428		}
1429		builder.setItems(labels, (dialog, which) -> {
1430			final long till;
1431			if (durations[which] == -1) {
1432				till = Long.MAX_VALUE;
1433			} else {
1434				till = System.currentTimeMillis() + (durations[which] * 1000);
1435			}
1436			conversation.setMutedTill(till);
1437			activity.xmppConnectionService.updateConversation(conversation);
1438			activity.onConversationsListItemUpdated();
1439			refresh();
1440			getActivity().invalidateOptionsMenu();
1441		});
1442		builder.create().show();
1443	}
1444
1445	private boolean hasStoragePermission(int requestCode) {
1446		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1447			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1448				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1449				return false;
1450			} else {
1451				return true;
1452			}
1453		} else {
1454			return true;
1455		}
1456	}
1457
1458	private boolean hasStorageAndCameraPermission(int requestCode) {
1459		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1460			List<String> missingPermissions = new ArrayList<>();
1461			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1462				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1463			}
1464			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1465				missingPermissions.add(Manifest.permission.CAMERA);
1466			}
1467			if (missingPermissions.size() == 0) {
1468				return true;
1469			} else {
1470				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1471				return false;
1472			}
1473		} else {
1474			return true;
1475		}
1476	}
1477
1478	public void unmuteConversation(final Conversation conversation) {
1479		conversation.setMutedTill(0);
1480		this.activity.xmppConnectionService.updateConversation(conversation);
1481		this.activity.onConversationsListItemUpdated();
1482		refresh();
1483		getActivity().invalidateOptionsMenu();
1484	}
1485
1486	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1487		final Account account = conversation.getAccount();
1488		final PresenceSelector.OnPresenceSelected callback = () -> {
1489			Intent intent = new Intent();
1490			boolean chooser = false;
1491			String fallbackPackageId = null;
1492			switch (attachmentChoice) {
1493				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1494					intent.setAction(Intent.ACTION_GET_CONTENT);
1495					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1496					intent.setType("image/*");
1497					chooser = true;
1498					break;
1499				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1500					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1501					break;
1502				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1503					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1504					pendingTakePhotoUri.push(uri);
1505					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1506					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1507					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1508					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1509					break;
1510				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1511					chooser = true;
1512					intent.setType("*/*");
1513					intent.addCategory(Intent.CATEGORY_OPENABLE);
1514					intent.setAction(Intent.ACTION_GET_CONTENT);
1515					break;
1516				case ATTACHMENT_CHOICE_RECORD_VOICE:
1517					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1518					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1519					break;
1520				case ATTACHMENT_CHOICE_LOCATION:
1521					intent.setAction("eu.siacs.conversations.location.request");
1522					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1523					break;
1524			}
1525			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1526				if (chooser) {
1527					startActivityForResult(
1528							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1529							attachmentChoice);
1530				} else {
1531					startActivityForResult(intent, attachmentChoice);
1532				}
1533			} else if (fallbackPackageId != null) {
1534				startActivity(getInstallApkIntent(fallbackPackageId));
1535			}
1536		};
1537		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1538			conversation.setNextCounterpart(null);
1539			callback.onPresenceSelected();
1540		} else {
1541			activity.selectPresence(conversation, callback);
1542		}
1543	}
1544
1545	private Intent getInstallApkIntent(final String packageId) {
1546		Intent intent = new Intent(Intent.ACTION_VIEW);
1547		intent.setData(Uri.parse("market://details?id=" + packageId));
1548		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1549			return intent;
1550		} else {
1551			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1552			return intent;
1553		}
1554	}
1555
1556	@Override
1557	public void onResume() {
1558		new Handler().post(() -> {
1559			final Activity activity = getActivity();
1560			if (activity == null) {
1561				return;
1562			}
1563			final PackageManager packageManager = activity.getPackageManager();
1564			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1565			getActivity().invalidateOptionsMenu();
1566		});
1567		super.onResume();
1568		binding.messagesView.post(this::fireReadEvent);
1569	}
1570
1571	private void fireReadEvent() {
1572		if (activity != null && this.conversation != null) {
1573			String uuid = getLastVisibleMessageUuid();
1574			if (uuid != null) {
1575				activity.onConversationRead(this.conversation, uuid);
1576			}
1577		}
1578	}
1579
1580	private String getLastVisibleMessageUuid() {
1581		if (binding == null) {
1582			return null;
1583		}
1584		synchronized (this.messageList) {
1585			int pos = binding.messagesView.getLastVisiblePosition();
1586			if (pos >= 0) {
1587				Message message = null;
1588				for (int i = pos; i >= 0; --i) {
1589					message = (Message) binding.messagesView.getItemAtPosition(i);
1590					if (message.getType() != Message.TYPE_STATUS) {
1591						break;
1592					}
1593				}
1594				if (message != null) {
1595					while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1596						message = message.next();
1597					}
1598					return message.getUuid();
1599				}
1600			}
1601		}
1602		return null;
1603	}
1604
1605	private void showErrorMessage(final Message message) {
1606		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1607		builder.setTitle(R.string.error_message);
1608		builder.setMessage(message.getErrorMessage());
1609		builder.setPositiveButton(R.string.confirm, null);
1610		builder.create().show();
1611	}
1612
1613	private void shareWith(Message message) {
1614		Intent shareIntent = new Intent();
1615		shareIntent.setAction(Intent.ACTION_SEND);
1616		if (message.isGeoUri()) {
1617			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1618			shareIntent.setType("text/plain");
1619		} else if (!message.isFileOrImage()) {
1620			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1621			shareIntent.setType("text/plain");
1622		} else {
1623			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1624			try {
1625				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1626			} catch (SecurityException e) {
1627				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1628				return;
1629			}
1630			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1631			String mime = message.getMimeType();
1632			if (mime == null) {
1633				mime = "*/*";
1634			}
1635			shareIntent.setType(mime);
1636		}
1637		try {
1638			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1639		} catch (ActivityNotFoundException e) {
1640			//This should happen only on faulty androids because normally chooser is always available
1641			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1642		}
1643	}
1644
1645	private void copyMessage(Message message) {
1646		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1647			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1648		}
1649	}
1650
1651	private void deleteFile(Message message) {
1652		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1653			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1654			activity.onConversationsListItemUpdated();
1655			refresh();
1656		}
1657	}
1658
1659	private void resendMessage(final Message message) {
1660		if (message.isFileOrImage()) {
1661			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1662			if (file.exists()) {
1663				final Conversation conversation = message.getConversation();
1664				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1665				if (!message.hasFileOnRemoteHost()
1666						&& xmppConnection != null
1667						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1668					activity.selectPresence(conversation, () -> {
1669						message.setCounterpart(conversation.getNextCounterpart());
1670						activity.xmppConnectionService.resendFailedMessages(message);
1671						new Handler().post(() -> {
1672							int size = messageList.size();
1673							this.binding.messagesView.setSelection(size - 1);
1674						});
1675					});
1676					return;
1677				}
1678			} else {
1679				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1680				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1681				activity.onConversationsListItemUpdated();
1682				refresh();
1683				return;
1684			}
1685		}
1686		activity.xmppConnectionService.resendFailedMessages(message);
1687		new Handler().post(() -> {
1688			int size = messageList.size();
1689			this.binding.messagesView.setSelection(size - 1);
1690		});
1691	}
1692
1693	private void copyUrl(Message message) {
1694		final String url;
1695		final int resId;
1696		if (message.isGeoUri()) {
1697			resId = R.string.location;
1698			url = message.getBody();
1699		} else if (message.hasFileOnRemoteHost()) {
1700			resId = R.string.file_url;
1701			url = message.getFileParams().url.toString();
1702		} else {
1703			url = message.getBody().trim();
1704			resId = R.string.file_url;
1705		}
1706		if (activity.copyTextToClipboard(url, resId)) {
1707			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1708		}
1709	}
1710
1711	private void cancelTransmission(Message message) {
1712		Transferable transferable = message.getTransferable();
1713		if (transferable != null) {
1714			transferable.cancel();
1715		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1716			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1717		}
1718	}
1719
1720	private void retryDecryption(Message message) {
1721		message.setEncryption(Message.ENCRYPTION_PGP);
1722		activity.onConversationsListItemUpdated();
1723		refresh();
1724		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1725	}
1726
1727	private void privateMessageWith(final Jid counterpart) {
1728		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1729			activity.xmppConnectionService.sendChatState(conversation);
1730		}
1731		this.binding.textinput.setText("");
1732		this.conversation.setNextCounterpart(counterpart);
1733		updateChatMsgHint();
1734		updateSendButton();
1735		updateEditablity();
1736	}
1737
1738	private void correctMessage(Message message) {
1739		while (message.mergeable(message.next())) {
1740			message = message.next();
1741		}
1742		this.conversation.setCorrectingMessage(message);
1743		final Editable editable = binding.textinput.getText();
1744		this.conversation.setDraftMessage(editable.toString());
1745		this.binding.textinput.setText("");
1746		this.binding.textinput.append(message.getBody());
1747
1748	}
1749
1750	private void highlightInConference(String nick) {
1751		final Editable editable = this.binding.textinput.getText();
1752		String oldString = editable.toString().trim();
1753		final int pos = this.binding.textinput.getSelectionStart();
1754		if (oldString.isEmpty() || pos == 0) {
1755			editable.insert(0, nick + ": ");
1756		} else {
1757			final char before = editable.charAt(pos - 1);
1758			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1759			if (before == '\n') {
1760				editable.insert(pos, nick + ": ");
1761			} else {
1762				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1763					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1764						editable.insert(pos - 2, ", " + nick);
1765						return;
1766					}
1767				}
1768				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1769				if (Character.isWhitespace(after)) {
1770					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1771				}
1772			}
1773		}
1774	}
1775
1776	@Override
1777	public void onSaveInstanceState(Bundle outState) {
1778		super.onSaveInstanceState(outState);
1779		if (conversation != null) {
1780			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1781			outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1782			final Uri uri = pendingTakePhotoUri.peek();
1783			if (uri != null) {
1784				outState.putString(STATE_PHOTO_URI, uri.toString());
1785			}
1786			final ScrollState scrollState = getScrollPosition();
1787			if (scrollState != null) {
1788				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1789			}
1790		}
1791	}
1792
1793	@Override
1794	public void onActivityCreated(Bundle savedInstanceState) {
1795		super.onActivityCreated(savedInstanceState);
1796		if (savedInstanceState == null) {
1797			return;
1798		}
1799		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1800		pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1801		if (uuid != null) {
1802			this.pendingConversationsUuid.push(uuid);
1803			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1804			if (takePhotoUri != null) {
1805				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1806			}
1807			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1808		}
1809	}
1810
1811	@Override
1812	public void onStart() {
1813		super.onStart();
1814		if (this.reInitRequiredOnStart && this.conversation != null) {
1815			final Bundle extras = pendingExtras.pop();
1816			reInit(this.conversation, extras != null);
1817			if (extras != null) {
1818				processExtras(extras);
1819			}
1820		} else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1821			final String uuid = pendingConversationsUuid.pop();
1822			Log.d(Config.LOGTAG,"ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="+uuid);
1823			if (uuid != null) {
1824				findAndReInitByUuidOrArchive(uuid);
1825			}
1826		}
1827	}
1828
1829	@Override
1830	public void onStop() {
1831		super.onStop();
1832		final Activity activity = getActivity();
1833		if (activity == null || !activity.isChangingConfigurations()) {
1834			hideSoftKeyboard(activity);
1835			messageListAdapter.stopAudioPlayer();
1836		}
1837		if (this.conversation != null) {
1838			final String msg = this.binding.textinput.getText().toString();
1839			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1840				this.activity.xmppConnectionService.updateConversation(this.conversation);
1841			}
1842			updateChatState(this.conversation, msg);
1843			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1844		}
1845		this.reInitRequiredOnStart = true;
1846	}
1847
1848	private void updateChatState(final Conversation conversation, final String msg) {
1849		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1850		Account.State status = conversation.getAccount().getStatus();
1851		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1852			activity.xmppConnectionService.sendChatState(conversation);
1853		}
1854	}
1855
1856	private void saveMessageDraftStopAudioPlayer() {
1857		final Conversation previousConversation = this.conversation;
1858		if (this.activity == null || this.binding == null || previousConversation == null) {
1859			return;
1860		}
1861		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1862		final String msg = this.binding.textinput.getText().toString();
1863		if (previousConversation.setNextMessage(msg)) {
1864			activity.xmppConnectionService.updateConversation(previousConversation);
1865		}
1866		updateChatState(this.conversation, msg);
1867		messageListAdapter.stopAudioPlayer();
1868	}
1869
1870	public void reInit(Conversation conversation, Bundle extras) {
1871		this.saveMessageDraftStopAudioPlayer();
1872		if (this.reInit(conversation, extras != null)) {
1873			if (extras != null) {
1874				processExtras(extras);
1875			}
1876			this.reInitRequiredOnStart = false;
1877		} else {
1878			this.reInitRequiredOnStart = true;
1879			pendingExtras.push(extras);
1880		}
1881		resetUnreadMessagesCount();
1882	}
1883
1884	private void reInit(Conversation conversation) {
1885		reInit(conversation, false);
1886	}
1887
1888	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1889		if (conversation == null) {
1890			return false;
1891		}
1892		this.conversation = conversation;
1893		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1894		if (this.activity == null || this.binding == null) {
1895			return false;
1896		}
1897
1898		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1899			activity.onConversationArchived(this.conversation);
1900			return false;
1901		}
1902
1903		stopScrolling();
1904		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1905
1906		if (this.conversation.isRead() && hasExtras) {
1907			Log.d(Config.LOGTAG, "trimming conversation");
1908			this.conversation.trim();
1909		}
1910
1911		setupIme();
1912
1913		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1914
1915		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1916		this.binding.textinput.setKeyboardListener(null);
1917		this.binding.textinput.setText("");
1918		this.binding.textinput.append(this.conversation.getNextMessage());
1919		this.binding.textinput.setKeyboardListener(this);
1920		messageListAdapter.updatePreferences();
1921		refresh(false);
1922		this.conversation.messagesLoaded.set(true);
1923		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1924
1925		if (hasExtras || scrolledToBottomAndNoPending) {
1926			resetUnreadMessagesCount();
1927			synchronized (this.messageList) {
1928				Log.d(Config.LOGTAG, "jump to first unread message");
1929				final Message first = conversation.getFirstUnreadMessage();
1930				final int bottom = Math.max(0, this.messageList.size() - 1);
1931				final int pos;
1932				if (first == null) {
1933					pos = bottom;
1934				} else {
1935					int i = getIndexOf(first.getUuid(), this.messageList);
1936					pos = i < 0 ? bottom : i;
1937				}
1938				setSelection(pos);
1939			}
1940		}
1941
1942
1943		this.binding.messagesView.post(this::fireReadEvent);
1944		//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
1945		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1946		return true;
1947	}
1948
1949	private void resetUnreadMessagesCount() {
1950		lastMessageUuid = null;
1951		hideUnreadMessagesCount();
1952	}
1953
1954	private void hideUnreadMessagesCount() {
1955		if (this.binding == null) {
1956			return;
1957		}
1958		this.binding.scrollToBottomButton.setEnabled(false);
1959		this.binding.scrollToBottomButton.setVisibility(View.GONE);
1960		this.binding.unreadCountCustomView.setVisibility(View.GONE);
1961	}
1962
1963	private void setSelection(int pos) {
1964		this.binding.messagesView.setSelection(pos);
1965		this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
1966		this.binding.messagesView.post(this::fireReadEvent);
1967	}
1968
1969	private boolean scrolledToBottom() {
1970		if (this.binding == null) {
1971			return false;
1972		}
1973		return scrolledToBottom(this.binding.messagesView);
1974	}
1975
1976	private void processExtras(Bundle extras) {
1977		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1978		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1979		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1980		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1981		if (nick != null) {
1982			if (pm) {
1983				Jid jid = conversation.getJid();
1984				try {
1985					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1986					privateMessageWith(next);
1987				} catch (final IllegalArgumentException ignored) {
1988					//do nothing
1989				}
1990			} else {
1991				final MucOptions mucOptions = conversation.getMucOptions();
1992				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
1993					highlightInConference(nick);
1994				}
1995			}
1996		} else {
1997			appendText(text);
1998		}
1999		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2000		if (message != null) {
2001			startDownloadable(message);
2002		}
2003	}
2004
2005	private boolean showBlockSubmenu(View view) {
2006		final Jid jid = conversation.getJid();
2007		if (jid.getLocal() == null) {
2008			BlockContactDialog.show(activity, conversation);
2009		} else {
2010			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2011			popupMenu.inflate(R.menu.block);
2012			popupMenu.setOnMenuItemClickListener(menuItem -> {
2013				Blockable blockable;
2014				switch (menuItem.getItemId()) {
2015					case R.id.block_domain:
2016						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2017						break;
2018					default:
2019						blockable = conversation;
2020				}
2021				BlockContactDialog.show(activity, blockable);
2022				return true;
2023			});
2024			popupMenu.show();
2025		}
2026		return true;
2027	}
2028
2029	private void updateSnackBar(final Conversation conversation) {
2030		final Account account = conversation.getAccount();
2031		final XmppConnection connection = account.getXmppConnection();
2032		final int mode = conversation.getMode();
2033		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2034		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2035			return;
2036		}
2037		if (account.getStatus() == Account.State.DISABLED) {
2038			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2039		} else if (conversation.isBlocked()) {
2040			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2041		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2042			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2043		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2044			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2045		} else if (mode == Conversation.MODE_MULTI
2046				&& !conversation.getMucOptions().online()
2047				&& account.getStatus() == Account.State.ONLINE) {
2048			switch (conversation.getMucOptions().getError()) {
2049				case NICK_IN_USE:
2050					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2051					break;
2052				case NO_RESPONSE:
2053					showSnackbar(R.string.joining_conference, 0, null);
2054					break;
2055				case SERVER_NOT_FOUND:
2056					if (conversation.receivedMessagesCount() > 0) {
2057						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2058					} else {
2059						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2060					}
2061					break;
2062				case PASSWORD_REQUIRED:
2063					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2064					break;
2065				case BANNED:
2066					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2067					break;
2068				case MEMBERS_ONLY:
2069					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2070					break;
2071				case KICKED:
2072					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2073					break;
2074				case UNKNOWN:
2075					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2076					break;
2077				case INVALID_NICK:
2078					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2079				case SHUTDOWN:
2080					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2081					break;
2082				default:
2083					hideSnackbar();
2084					break;
2085			}
2086		} else if (account.hasPendingPgpIntent(conversation)) {
2087			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2088		} else if (connection != null
2089				&& connection.getFeatures().blocking()
2090				&& conversation.countMessages() != 0
2091				&& !conversation.isBlocked()
2092				&& conversation.isWithStranger()) {
2093			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2094		} else {
2095			hideSnackbar();
2096		}
2097	}
2098
2099	@Override
2100	public void refresh() {
2101		if (this.binding == null) {
2102			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2103			return;
2104		}
2105		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2106			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2107				activity.onConversationArchived(this.conversation);
2108				return;
2109			}
2110		}
2111		this.refresh(true);
2112	}
2113
2114	private void refresh(boolean notifyConversationRead) {
2115		synchronized (this.messageList) {
2116			if (this.conversation != null) {
2117				conversation.populateWithMessages(this.messageList);
2118				updateSnackBar(conversation);
2119				updateStatusMessages();
2120				if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2121					binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2122					binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2123				}
2124				this.messageListAdapter.notifyDataSetChanged();
2125				updateChatMsgHint();
2126				if (notifyConversationRead && activity != null) {
2127					binding.messagesView.post(this::fireReadEvent);
2128				}
2129				updateSendButton();
2130				updateEditablity();
2131			}
2132		}
2133	}
2134
2135	protected void messageSent() {
2136		mSendingPgpMessage.set(false);
2137		this.binding.textinput.setText("");
2138		if (conversation.setCorrectingMessage(null)) {
2139			this.binding.textinput.append(conversation.getDraftMessage());
2140			conversation.setDraftMessage(null);
2141		}
2142		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2143			activity.xmppConnectionService.updateConversation(conversation);
2144		}
2145		updateChatMsgHint();
2146		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2147		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2148		if (prefScrollToBottom || scrolledToBottom()) {
2149			new Handler().post(() -> {
2150				int size = messageList.size();
2151				this.binding.messagesView.setSelection(size - 1);
2152			});
2153		}
2154	}
2155
2156	public void doneSendingPgpMessage() {
2157		mSendingPgpMessage.set(false);
2158	}
2159
2160	public long getMaxHttpUploadSize(Conversation conversation) {
2161		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2162		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2163	}
2164
2165	private void updateEditablity() {
2166		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2167		this.binding.textinput.setFocusable(canWrite);
2168		this.binding.textinput.setFocusableInTouchMode(canWrite);
2169		this.binding.textSendButton.setEnabled(canWrite);
2170		this.binding.textinput.setCursorVisible(canWrite);
2171	}
2172
2173	public void updateSendButton() {
2174		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2175		final Conversation c = this.conversation;
2176		final Presence.Status status;
2177		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2178		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2179		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2180			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2181				status = Presence.Status.OFFLINE;
2182			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2183				status = c.getContact().getShownStatus();
2184			} else {
2185				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2186			}
2187		} else {
2188			status = Presence.Status.OFFLINE;
2189		}
2190		this.binding.textSendButton.setTag(action);
2191		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2192	}
2193
2194	protected void updateDateSeparators() {
2195		synchronized (this.messageList) {
2196			for (int i = 0; i < this.messageList.size(); ++i) {
2197				final Message current = this.messageList.get(i);
2198				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2199					this.messageList.add(i, Message.createDateSeparator(current));
2200					i++;
2201				}
2202			}
2203		}
2204	}
2205
2206	protected void updateStatusMessages() {
2207		updateDateSeparators();
2208		synchronized (this.messageList) {
2209			if (showLoadMoreMessages(conversation)) {
2210				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2211			}
2212			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2213				ChatState state = conversation.getIncomingChatState();
2214				if (state == ChatState.COMPOSING) {
2215					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2216				} else if (state == ChatState.PAUSED) {
2217					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2218				} else {
2219					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2220						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2221							return;
2222						} else {
2223							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2224								this.messageList.add(i + 1,
2225										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2226								return;
2227							}
2228						}
2229					}
2230				}
2231			} else {
2232				final MucOptions mucOptions = conversation.getMucOptions();
2233				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2234				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2235				ChatState state = ChatState.COMPOSING;
2236				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2237				if (users.size() == 0) {
2238					state = ChatState.PAUSED;
2239					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2240				}
2241				if (mucOptions.isPrivateAndNonAnonymous()) {
2242					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2243						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2244						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2245						for (ReadByMarker marker : markersForMessage) {
2246							if (!ReadByMarker.contains(marker, addedMarkers)) {
2247								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2248								MucOptions.User user = mucOptions.findUser(marker);
2249								if (user != null && !users.contains(user)) {
2250									shownMarkers.add(user);
2251								}
2252							}
2253						}
2254						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2255						final Message statusMessage;
2256						final int size = shownMarkers.size();
2257						if (size > 1) {
2258							final String body;
2259							if (size <= 4) {
2260								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2261							} else {
2262								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2263							}
2264							statusMessage = Message.createStatusMessage(conversation, body);
2265							statusMessage.setCounterparts(shownMarkers);
2266						} else if (size == 1) {
2267							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2268							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2269							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2270						} else {
2271							statusMessage = null;
2272						}
2273						if (statusMessage != null) {
2274							this.messageList.add(i + 1, statusMessage);
2275						}
2276						addedMarkers.add(markerForSender);
2277						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2278							break;
2279						}
2280					}
2281				}
2282				if (users.size() > 0) {
2283					Message statusMessage;
2284					if (users.size() == 1) {
2285						MucOptions.User user = users.get(0);
2286						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2287						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2288						statusMessage.setTrueCounterpart(user.getRealJid());
2289						statusMessage.setCounterpart(user.getFullJid());
2290					} else {
2291						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2292						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2293						statusMessage.setCounterparts(users);
2294					}
2295					this.messageList.add(statusMessage);
2296				}
2297
2298			}
2299		}
2300	}
2301
2302	private void stopScrolling() {
2303		long now = SystemClock.uptimeMillis();
2304		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2305		binding.messagesView.dispatchTouchEvent(cancel);
2306	}
2307
2308	private boolean showLoadMoreMessages(final Conversation c) {
2309		if (activity == null || activity.xmppConnectionService == null) {
2310			return false;
2311		}
2312		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2313		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2314		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2315	}
2316
2317	private boolean hasMamSupport(final Conversation c) {
2318		if (c.getMode() == Conversation.MODE_SINGLE) {
2319			final XmppConnection connection = c.getAccount().getXmppConnection();
2320			return connection != null && connection.getFeatures().mam();
2321		} else {
2322			return c.getMucOptions().mamSupport();
2323		}
2324	}
2325
2326	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2327		showSnackbar(message, action, clickListener, null);
2328	}
2329
2330	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2331		this.binding.snackbar.setVisibility(View.VISIBLE);
2332		this.binding.snackbar.setOnClickListener(null);
2333		this.binding.snackbarMessage.setText(message);
2334		this.binding.snackbarMessage.setOnClickListener(null);
2335		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2336		if (action != 0) {
2337			this.binding.snackbarAction.setText(action);
2338		}
2339		this.binding.snackbarAction.setOnClickListener(clickListener);
2340		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2341	}
2342
2343	protected void hideSnackbar() {
2344		this.binding.snackbar.setVisibility(View.GONE);
2345	}
2346
2347	protected void sendMessage(Message message) {
2348		activity.xmppConnectionService.sendMessage(message);
2349		messageSent();
2350	}
2351
2352	protected void sendPgpMessage(final Message message) {
2353		final XmppConnectionService xmppService = activity.xmppConnectionService;
2354		final Contact contact = message.getConversation().getContact();
2355		if (!activity.hasPgp()) {
2356			activity.showInstallPgpDialog();
2357			return;
2358		}
2359		if (conversation.getAccount().getPgpSignature() == null) {
2360			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2361			return;
2362		}
2363		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2364			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2365		}
2366		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2367			if (contact.getPgpKeyId() != 0) {
2368				xmppService.getPgpEngine().hasKey(contact,
2369						new UiCallback<Contact>() {
2370
2371							@Override
2372							public void userInputRequried(PendingIntent pi, Contact contact) {
2373								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2374							}
2375
2376							@Override
2377							public void success(Contact contact) {
2378								encryptTextMessage(message);
2379							}
2380
2381							@Override
2382							public void error(int error, Contact contact) {
2383								activity.runOnUiThread(() -> Toast.makeText(activity,
2384										R.string.unable_to_connect_to_keychain,
2385										Toast.LENGTH_SHORT
2386								).show());
2387								mSendingPgpMessage.set(false);
2388							}
2389						});
2390
2391			} else {
2392				showNoPGPKeyDialog(false, (dialog, which) -> {
2393					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2394					xmppService.updateConversation(conversation);
2395					message.setEncryption(Message.ENCRYPTION_NONE);
2396					xmppService.sendMessage(message);
2397					messageSent();
2398				});
2399			}
2400		} else {
2401			if (conversation.getMucOptions().pgpKeysInUse()) {
2402				if (!conversation.getMucOptions().everybodyHasKeys()) {
2403					Toast warning = Toast
2404							.makeText(getActivity(),
2405									R.string.missing_public_keys,
2406									Toast.LENGTH_LONG);
2407					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2408					warning.show();
2409				}
2410				encryptTextMessage(message);
2411			} else {
2412				showNoPGPKeyDialog(true, (dialog, which) -> {
2413					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2414					message.setEncryption(Message.ENCRYPTION_NONE);
2415					xmppService.updateConversation(conversation);
2416					xmppService.sendMessage(message);
2417					messageSent();
2418				});
2419			}
2420		}
2421	}
2422
2423	public void encryptTextMessage(Message message) {
2424		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2425				new UiCallback<Message>() {
2426
2427					@Override
2428					public void userInputRequried(PendingIntent pi, Message message) {
2429						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2430					}
2431
2432					@Override
2433					public void success(Message message) {
2434						//TODO the following two call can be made before the callback
2435						getActivity().runOnUiThread(() -> messageSent());
2436					}
2437
2438					@Override
2439					public void error(final int error, Message message) {
2440						getActivity().runOnUiThread(() -> {
2441							doneSendingPgpMessage();
2442							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2443						});
2444
2445					}
2446				});
2447	}
2448
2449	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2450		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2451		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2452		if (plural) {
2453			builder.setTitle(getString(R.string.no_pgp_keys));
2454			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2455		} else {
2456			builder.setTitle(getString(R.string.no_pgp_key));
2457			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2458		}
2459		builder.setNegativeButton(getString(R.string.cancel), null);
2460		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2461		builder.create().show();
2462	}
2463
2464	public void appendText(String text) {
2465		if (text == null) {
2466			return;
2467		}
2468		String previous = this.binding.textinput.getText().toString();
2469		if (previous.length() != 0 && !previous.endsWith(" ")) {
2470			text = " " + text;
2471		}
2472		this.binding.textinput.append(text);
2473	}
2474
2475	@Override
2476	public boolean onEnterPressed() {
2477		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2478		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2479		if (enterIsSend) {
2480			sendMessage();
2481			return true;
2482		} else {
2483			return false;
2484		}
2485	}
2486
2487	@Override
2488	public void onTypingStarted() {
2489		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2490		if (service == null) {
2491			return;
2492		}
2493		Account.State status = conversation.getAccount().getStatus();
2494		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2495			service.sendChatState(conversation);
2496		}
2497		updateSendButton();
2498	}
2499
2500	@Override
2501	public void onTypingStopped() {
2502		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2503		if (service == null) {
2504			return;
2505		}
2506		Account.State status = conversation.getAccount().getStatus();
2507		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2508			service.sendChatState(conversation);
2509		}
2510	}
2511
2512	@Override
2513	public void onTextDeleted() {
2514		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2515		if (service == null) {
2516			return;
2517		}
2518		Account.State status = conversation.getAccount().getStatus();
2519		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2520			service.sendChatState(conversation);
2521		}
2522		updateSendButton();
2523	}
2524
2525	@Override
2526	public void onTextChanged() {
2527		if (conversation != null && conversation.getCorrectingMessage() != null) {
2528			updateSendButton();
2529		}
2530	}
2531
2532	@Override
2533	public boolean onTabPressed(boolean repeated) {
2534		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2535			return false;
2536		}
2537		if (repeated) {
2538			completionIndex++;
2539		} else {
2540			lastCompletionLength = 0;
2541			completionIndex = 0;
2542			final String content = this.binding.textinput.getText().toString();
2543			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2544			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2545			firstWord = start == 0;
2546			incomplete = content.substring(start, lastCompletionCursor);
2547		}
2548		List<String> completions = new ArrayList<>();
2549		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2550			String name = user.getName();
2551			if (name != null && name.startsWith(incomplete)) {
2552				completions.add(name + (firstWord ? ": " : " "));
2553			}
2554		}
2555		Collections.sort(completions);
2556		if (completions.size() > completionIndex) {
2557			String completion = completions.get(completionIndex).substring(incomplete.length());
2558			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2559			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2560			lastCompletionLength = completion.length();
2561		} else {
2562			completionIndex = -1;
2563			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2564			lastCompletionLength = 0;
2565		}
2566		return true;
2567	}
2568
2569	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2570		try {
2571			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2572		} catch (final SendIntentException ignored) {
2573		}
2574	}
2575
2576	@Override
2577	public void onBackendConnected() {
2578		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2579		String uuid = pendingConversationsUuid.pop();
2580		if (uuid != null) {
2581			if (!findAndReInitByUuidOrArchive(uuid)) {
2582				return;
2583			}
2584		} else {
2585			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2586				clearPending();
2587				activity.onConversationArchived(conversation);
2588				return;
2589			}
2590		}
2591		ActivityResult activityResult = postponedActivityResult.pop();
2592		if (activityResult != null) {
2593			handleActivityResult(activityResult);
2594		}
2595		clearPending();
2596	}
2597
2598	private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2599		Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2600		if (conversation == null) {
2601			clearPending();
2602			activity.onConversationArchived(null);
2603			return false;
2604		}
2605		reInit(conversation);
2606		ScrollState scrollState = pendingScrollState.pop();
2607		String lastMessageUuid = pendingLastMessageUuid.pop();
2608		if (scrollState != null) {
2609			setScrollPosition(scrollState, lastMessageUuid);
2610		}
2611		return true;
2612	}
2613
2614	private void clearPending() {
2615		if (postponedActivityResult.pop() != null) {
2616			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2617		}
2618		pendingScrollState.pop();
2619		if (pendingTakePhotoUri.pop() != null) {
2620			Log.e(Config.LOGTAG, "cleared pending photo uri");
2621		}
2622	}
2623
2624	public Conversation getConversation() {
2625		return conversation;
2626	}
2627}