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