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.util.Pair;
  32import android.view.ContextMenu;
  33import android.view.ContextMenu.ContextMenuInfo;
  34import android.view.Gravity;
  35import android.view.LayoutInflater;
  36import android.view.Menu;
  37import android.view.MenuInflater;
  38import android.view.MenuItem;
  39import android.view.MotionEvent;
  40import android.view.View;
  41import android.view.View.OnClickListener;
  42import android.view.ViewGroup;
  43import android.view.inputmethod.EditorInfo;
  44import android.view.inputmethod.InputMethodManager;
  45import android.widget.AbsListView;
  46import android.widget.AbsListView.OnScrollListener;
  47import android.widget.AdapterView;
  48import android.widget.AdapterView.AdapterContextMenuInfo;
  49import android.widget.CheckBox;
  50import android.widget.ListView;
  51import android.widget.PopupMenu;
  52import android.widget.TextView.OnEditorActionListener;
  53import android.widget.Toast;
  54
  55import java.util.ArrayList;
  56import java.util.Arrays;
  57import java.util.Collections;
  58import java.util.HashSet;
  59import java.util.Iterator;
  60import java.util.List;
  61import java.util.Set;
  62import java.util.UUID;
  63import java.util.concurrent.atomic.AtomicBoolean;
  64
  65import eu.siacs.conversations.Config;
  66import eu.siacs.conversations.R;
  67import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  68import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  69import eu.siacs.conversations.databinding.FragmentConversationBinding;
  70import eu.siacs.conversations.entities.Account;
  71import eu.siacs.conversations.entities.Blockable;
  72import eu.siacs.conversations.entities.Contact;
  73import eu.siacs.conversations.entities.Conversation;
  74import eu.siacs.conversations.entities.DownloadableFile;
  75import eu.siacs.conversations.entities.Message;
  76import eu.siacs.conversations.entities.MucOptions;
  77import eu.siacs.conversations.entities.Presence;
  78import eu.siacs.conversations.entities.ReadByMarker;
  79import eu.siacs.conversations.entities.Transferable;
  80import eu.siacs.conversations.entities.TransferablePlaceholder;
  81import eu.siacs.conversations.http.HttpDownloadConnection;
  82import eu.siacs.conversations.persistance.FileBackend;
  83import eu.siacs.conversations.services.MessageArchiveService;
  84import eu.siacs.conversations.services.XmppConnectionService;
  85import eu.siacs.conversations.ui.adapter.MessageAdapter;
  86import eu.siacs.conversations.ui.util.ActivityResult;
  87import eu.siacs.conversations.ui.util.AttachmentTool;
  88import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.ScrollState;
  92import eu.siacs.conversations.ui.util.SendButtonAction;
  93import eu.siacs.conversations.ui.util.SendButtonTool;
  94import eu.siacs.conversations.ui.widget.EditMessage;
  95import eu.siacs.conversations.utils.MessageUtils;
  96import eu.siacs.conversations.utils.NickValidityChecker;
  97import eu.siacs.conversations.utils.StylingHelper;
  98import eu.siacs.conversations.utils.TimeframeUtils;
  99import eu.siacs.conversations.utils.UIHelper;
 100import eu.siacs.conversations.xmpp.XmppConnection;
 101import eu.siacs.conversations.xmpp.chatstate.ChatState;
 102import eu.siacs.conversations.xmpp.jid.InvalidJidException;
 103import eu.siacs.conversations.xmpp.jid.Jid;
 104
 105import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 106import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 107
 108
 109public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 110
 111
 112	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 113	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 114	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 115	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 116	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 117	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 118	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 119	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 120	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 121	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 122	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 123	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 124	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 125	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 126
 127	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 128	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 129	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 130	public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 131
 132
 133	final protected List<Message> messageList = new ArrayList<>();
 134	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 135	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 136	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 137	private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 138	private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 139	public Uri mPendingEditorContent = null;
 140	protected MessageAdapter messageListAdapter;
 141	private Conversation conversation;
 142	private FragmentConversationBinding binding;
 143	private Toast messageLoaderToast;
 144	private ConversationActivity activity;
 145
 146	private boolean reInitRequiredOnStart = true;
 147
 148	private OnClickListener clickToMuc = new OnClickListener() {
 149
 150		@Override
 151		public void onClick(View v) {
 152			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 153			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 154			intent.putExtra("uuid", conversation.getUuid());
 155			startActivity(intent);
 156		}
 157	};
 158	private OnClickListener leaveMuc = new OnClickListener() {
 159
 160		@Override
 161		public void onClick(View v) {
 162			activity.xmppConnectionService.archiveConversation(conversation);
 163			activity.onConversationArchived(conversation);
 164		}
 165	};
 166	private OnClickListener joinMuc = new OnClickListener() {
 167
 168		@Override
 169		public void onClick(View v) {
 170			activity.xmppConnectionService.joinMuc(conversation);
 171		}
 172	};
 173	private OnClickListener enterPassword = new OnClickListener() {
 174
 175		@Override
 176		public void onClick(View v) {
 177			MucOptions muc = conversation.getMucOptions();
 178			String password = muc.getPassword();
 179			if (password == null) {
 180				password = "";
 181			}
 182			activity.quickPasswordEdit(password, value -> {
 183				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 184				return null;
 185			});
 186		}
 187	};
 188	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 189
 190		@Override
 191		public void onScrollStateChanged(AbsListView view, int scrollState) {
 192			// TODO Auto-generated method stub
 193
 194		}
 195
 196		@Override
 197		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 198			synchronized (ConversationFragment.this.messageList) {
 199				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 200					long timestamp;
 201					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 202						timestamp = messageList.get(1).getTimeSent();
 203					} else {
 204						timestamp = messageList.get(0).getTimeSent();
 205					}
 206					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 207						@Override
 208						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 209							if (ConversationFragment.this.conversation != conversation) {
 210								conversation.messagesLoaded.set(true);
 211								return;
 212							}
 213							runOnUiThread(() -> {
 214								final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 215								Message message = null;
 216								int childPos;
 217								for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 218									message = messageList.get(oldPosition + childPos);
 219									if (message.getType() != Message.TYPE_STATUS) {
 220										break;
 221									}
 222								}
 223								final String uuid = message != null ? message.getUuid() : null;
 224								View v = binding.messagesView.getChildAt(childPos);
 225								final int pxOffset = (v == null) ? 0 : v.getTop();
 226								ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 227								try {
 228									updateStatusMessages();
 229								} catch (IllegalStateException e) {
 230									Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 231								}
 232								messageListAdapter.notifyDataSetChanged();
 233								int pos = Math.max(getIndexOf(uuid, messageList), 0);
 234								binding.messagesView.setSelectionFromTop(pos, pxOffset);
 235								if (messageLoaderToast != null) {
 236									messageLoaderToast.cancel();
 237								}
 238								conversation.messagesLoaded.set(true);
 239							});
 240						}
 241
 242						@Override
 243						public void informUser(final int resId) {
 244
 245							runOnUiThread(() -> {
 246								if (messageLoaderToast != null) {
 247									messageLoaderToast.cancel();
 248								}
 249								if (ConversationFragment.this.conversation != conversation) {
 250									return;
 251								}
 252								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 253								messageLoaderToast.show();
 254							});
 255
 256						}
 257					});
 258
 259				}
 260			}
 261		}
 262	};
 263
 264	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 265		@Override
 266		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 267			// try to get permission to read the image, if applicable
 268			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 269				try {
 270					inputContentInfo.requestPermission();
 271				} catch (Exception e) {
 272					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 273					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 274					).show();
 275					return false;
 276				}
 277			}
 278			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 279				attachImageToConversation(inputContentInfo.getContentUri());
 280			} else {
 281				mPendingEditorContent = inputContentInfo.getContentUri();
 282			}
 283			return true;
 284		}
 285	};
 286	private Message selectedMessage;
 287	private OnClickListener mEnableAccountListener = new OnClickListener() {
 288		@Override
 289		public void onClick(View v) {
 290			final Account account = conversation == null ? null : conversation.getAccount();
 291			if (account != null) {
 292				account.setOption(Account.OPTION_DISABLED, false);
 293				activity.xmppConnectionService.updateAccount(account);
 294			}
 295		}
 296	};
 297	private OnClickListener mUnblockClickListener = new OnClickListener() {
 298		@Override
 299		public void onClick(final View v) {
 300			v.post(() -> v.setVisibility(View.INVISIBLE));
 301			if (conversation.isDomainBlocked()) {
 302				BlockContactDialog.show(activity, conversation);
 303			} else {
 304				unblockConversation(conversation);
 305			}
 306		}
 307	};
 308	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 309	private OnClickListener mAddBackClickListener = new OnClickListener() {
 310
 311		@Override
 312		public void onClick(View v) {
 313			final Contact contact = conversation == null ? null : conversation.getContact();
 314			if (contact != null) {
 315				activity.xmppConnectionService.createContact(contact, true);
 316				activity.switchToContactDetails(contact);
 317			}
 318		}
 319	};
 320	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 321	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 322		@Override
 323		public void onClick(View v) {
 324			final Contact contact = conversation == null ? null : conversation.getContact();
 325			if (contact != null) {
 326				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 327						activity.xmppConnectionService.getPresenceGenerator()
 328								.sendPresenceUpdatesTo(contact));
 329				hideSnackbar();
 330			}
 331		}
 332	};
 333
 334	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 335
 336		@Override
 337		public void onClick(View v) {
 338			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 339			if (pendingIntent != null) {
 340				try {
 341					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 342							REQUEST_DECRYPT_PGP,
 343							null,
 344							0,
 345							0,
 346							0);
 347				} catch (SendIntentException e) {
 348					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 349					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 350				}
 351			}
 352			updateSnackBar(conversation);
 353		}
 354	};
 355	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 356	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 357		if (actionId == EditorInfo.IME_ACTION_SEND) {
 358			InputMethodManager imm = (InputMethodManager) v.getContext()
 359					.getSystemService(Context.INPUT_METHOD_SERVICE);
 360			if (imm.isFullscreenMode()) {
 361				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 362			}
 363			sendMessage();
 364			return true;
 365		} else {
 366			return false;
 367		}
 368	};
 369	private OnClickListener mSendButtonListener = new OnClickListener() {
 370
 371		@Override
 372		public void onClick(View v) {
 373			Object tag = v.getTag();
 374			if (tag instanceof SendButtonAction) {
 375				SendButtonAction action = (SendButtonAction) tag;
 376				switch (action) {
 377					case TAKE_PHOTO:
 378					case RECORD_VIDEO:
 379					case SEND_LOCATION:
 380					case RECORD_VOICE:
 381					case CHOOSE_PICTURE:
 382						attachFile(action.toChoice());
 383						break;
 384					case CANCEL:
 385						if (conversation != null) {
 386							if (conversation.setCorrectingMessage(null)) {
 387								binding.textinput.setText("");
 388								binding.textinput.append(conversation.getDraftMessage());
 389								conversation.setDraftMessage(null);
 390							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 391								conversation.setNextCounterpart(null);
 392							}
 393							updateChatMsgHint();
 394							updateSendButton();
 395							updateEditablity();
 396						}
 397						break;
 398					default:
 399						sendMessage();
 400				}
 401			} else {
 402				sendMessage();
 403			}
 404		}
 405	};
 406	private int completionIndex = 0;
 407	private int lastCompletionLength = 0;
 408	private String incomplete;
 409	private int lastCompletionCursor;
 410	private boolean firstWord = false;
 411	private Message mPendingDownloadableMessage;
 412	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 413
 414
 415	private static ConversationFragment findConversationFragment(Activity activity) {
 416		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 417		if (fragment != null && fragment instanceof ConversationFragment) {
 418			return (ConversationFragment) fragment;
 419		}
 420		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 421		if (fragment != null && fragment instanceof ConversationFragment) {
 422			return (ConversationFragment) fragment;
 423		}
 424		return null;
 425	}
 426
 427	public static void downloadFile(Activity activity, Message message) {
 428		ConversationFragment fragment = findConversationFragment(activity);
 429		if (fragment != null) {
 430			fragment.startDownloadable(message);
 431		}
 432	}
 433
 434	public static void registerPendingMessage(Activity activity, Message message) {
 435		ConversationFragment fragment = findConversationFragment(activity);
 436		if (fragment != null) {
 437			fragment.pendingMessage.push(message);
 438		}
 439	}
 440
 441	public static void openPendingMessage(Activity activity) {
 442		ConversationFragment fragment = findConversationFragment(activity);
 443		if (fragment != null) {
 444			Message message = fragment.pendingMessage.pop();
 445			if (message != null) {
 446				fragment.messageListAdapter.openDownloadable(message);
 447			}
 448		}
 449	}
 450
 451	public static Conversation getConversation(Activity activity) {
 452		return getConversation(activity, R.id.secondary_fragment);
 453	}
 454
 455	private static Conversation getConversation(Activity activity, @IdRes int res) {
 456		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 457		if (fragment != null && fragment instanceof ConversationFragment) {
 458			return ((ConversationFragment) fragment).getConversation();
 459		} else {
 460			return null;
 461		}
 462	}
 463
 464	public static Conversation getConversationReliable(Activity activity) {
 465		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 466		if (conversation != null) {
 467			return conversation;
 468		}
 469		return getConversation(activity, R.id.main_fragment);
 470	}
 471
 472	private int getIndexOf(String uuid, List<Message> messages) {
 473		if (uuid == null) {
 474			return messages.size() - 1;
 475		}
 476		for (int i = 0; i < messages.size(); ++i) {
 477			if (uuid.equals(messages.get(i).getUuid())) {
 478				return i;
 479			} else {
 480				Message next = messages.get(i);
 481				while (next != null && next.wasMergedIntoPrevious()) {
 482					if (uuid.equals(next.getUuid())) {
 483						return i;
 484					}
 485					next = next.next();
 486				}
 487
 488			}
 489		}
 490		return -1;
 491	}
 492
 493	private ScrollState getScrollPosition() {
 494		final ListView listView = this.binding.messagesView;
 495		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 496			return null;
 497		} else {
 498			final int pos = listView.getFirstVisiblePosition();
 499			final View view = listView.getChildAt(0);
 500			if (view == null) {
 501				return null;
 502			} else {
 503				return new ScrollState(pos, view.getTop());
 504			}
 505		}
 506	}
 507
 508	private void setScrollPosition(ScrollState scrollPosition) {
 509		if (scrollPosition != null) {
 510			//TODO maybe this needs a 'post'
 511			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 512		}
 513	}
 514
 515	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 516		if (conversation == null) {
 517			return;
 518		}
 519		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 520
 521			@Override
 522			public void success(Message message) {
 523
 524			}
 525
 526			@Override
 527			public void error(int errorCode, Message object) {
 528				//TODO show possible pgp error
 529			}
 530
 531			@Override
 532			public void userInputRequried(PendingIntent pi, Message object) {
 533
 534			}
 535		});
 536	}
 537
 538	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 539		if (conversation == null) {
 540			return;
 541		}
 542		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 543		prepareFileToast.show();
 544		activity.delegateUriPermissionsToService(uri);
 545		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 546			@Override
 547			public void inform(final String text) {
 548				hidePrepareFileToast(prepareFileToast);
 549				runOnUiThread(() -> activity.replaceToast(text));
 550			}
 551
 552			@Override
 553			public void success(Message message) {
 554				runOnUiThread(() -> activity.hideToast());
 555				hidePrepareFileToast(prepareFileToast);
 556			}
 557
 558			@Override
 559			public void error(final int errorCode, Message message) {
 560				hidePrepareFileToast(prepareFileToast);
 561				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 562
 563			}
 564
 565			@Override
 566			public void userInputRequried(PendingIntent pi, Message message) {
 567				hidePrepareFileToast(prepareFileToast);
 568			}
 569		});
 570	}
 571
 572	public void attachImageToConversation(Uri uri) {
 573		this.attachImageToConversation(conversation, uri);
 574	}
 575
 576	private void attachImageToConversation(Conversation conversation, Uri uri) {
 577		if (conversation == null) {
 578			return;
 579		}
 580		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 581		prepareFileToast.show();
 582		activity.delegateUriPermissionsToService(uri);
 583		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 584				new UiCallback<Message>() {
 585
 586					@Override
 587					public void userInputRequried(PendingIntent pi, Message object) {
 588						hidePrepareFileToast(prepareFileToast);
 589					}
 590
 591					@Override
 592					public void success(Message message) {
 593						hidePrepareFileToast(prepareFileToast);
 594					}
 595
 596					@Override
 597					public void error(final int error, Message message) {
 598						hidePrepareFileToast(prepareFileToast);
 599						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 600					}
 601				});
 602	}
 603
 604	private void hidePrepareFileToast(final Toast prepareFileToast) {
 605		if (prepareFileToast != null) {
 606			activity.runOnUiThread(prepareFileToast::cancel);
 607		}
 608	}
 609
 610	private void sendMessage() {
 611		final String body = this.binding.textinput.getText().toString();
 612		final Conversation conversation = this.conversation;
 613		if (body.length() == 0 || conversation == null) {
 614			return;
 615		}
 616		final Message message;
 617		if (conversation.getCorrectingMessage() == null) {
 618			message = new Message(conversation, body, conversation.getNextEncryption());
 619			if (conversation.getMode() == Conversation.MODE_MULTI) {
 620				final Jid nextCounterpart = conversation.getNextCounterpart();
 621				if (nextCounterpart != null) {
 622					message.setCounterpart(nextCounterpart);
 623					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 624					message.setType(Message.TYPE_PRIVATE);
 625				}
 626			}
 627		} else {
 628			message = conversation.getCorrectingMessage();
 629			message.setBody(body);
 630			message.setEdited(message.getUuid());
 631			message.setUuid(UUID.randomUUID().toString());
 632		}
 633		switch (message.getConversation().getNextEncryption()) {
 634			case Message.ENCRYPTION_PGP:
 635				sendPgpMessage(message);
 636				break;
 637			case Message.ENCRYPTION_AXOLOTL:
 638				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 639					sendAxolotlMessage(message);
 640				}
 641				break;
 642			default:
 643				sendPlainTextMessage(message);
 644		}
 645	}
 646
 647	protected boolean trustKeysIfNeeded(int requestCode) {
 648		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 649	}
 650
 651	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 652		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 653		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 654		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 655		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 656		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 657		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 658		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 659		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 660			axolotlService.createSessionsIfNeeded(conversation);
 661			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 662			String[] contacts = new String[targets.size()];
 663			for (int i = 0; i < contacts.length; ++i) {
 664				contacts[i] = targets.get(i).toString();
 665			}
 666			intent.putExtra("contacts", contacts);
 667			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 668			intent.putExtra("choice", attachmentChoice);
 669			intent.putExtra("conversation", conversation.getUuid());
 670			startActivityForResult(intent, requestCode);
 671			return true;
 672		} else {
 673			return false;
 674		}
 675	}
 676
 677	public void updateChatMsgHint() {
 678		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 679		if (conversation.getCorrectingMessage() != null) {
 680			this.binding.textinput.setHint(R.string.send_corrected_message);
 681		} else if (multi && conversation.getNextCounterpart() != null) {
 682			this.binding.textinput.setHint(getString(
 683					R.string.send_private_message_to,
 684					conversation.getNextCounterpart().getResourcepart()));
 685		} else if (multi && !conversation.getMucOptions().participating()) {
 686			this.binding.textinput.setHint(R.string.you_are_not_participating);
 687		} else {
 688			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 689			getActivity().invalidateOptionsMenu();
 690		}
 691	}
 692
 693	public void setupIme() {
 694		this.binding.textinput.refreshIme();
 695	}
 696
 697	private void handleActivityResult(ActivityResult activityResult) {
 698		if (activityResult.resultCode == Activity.RESULT_OK) {
 699			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 700		} else {
 701			handleNegativeActivityResult(activityResult.requestCode);
 702		}
 703	}
 704
 705	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 706		switch (requestCode) {
 707			case REQUEST_TRUST_KEYS_TEXT:
 708				final String body = this.binding.textinput.getText().toString();
 709				Message message = new Message(conversation, body, conversation.getNextEncryption());
 710				sendAxolotlMessage(message);
 711				break;
 712			case REQUEST_TRUST_KEYS_MENU:
 713				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 714				selectPresenceToAttachFile(choice);
 715				break;
 716			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 717				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 718				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 719					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 720					attachImageToConversation(conversation, i.next());
 721				}
 722				break;
 723			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 724				Uri takePhotoUri = pendingTakePhotoUri.pop();
 725				if (takePhotoUri != null) {
 726					attachImageToConversation(conversation, takePhotoUri);
 727				} else {
 728					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 729				}
 730				break;
 731			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 732			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 733			case ATTACHMENT_CHOICE_RECORD_VOICE:
 734				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 735				String type = data.getType();
 736				final PresenceSelector.OnPresenceSelected callback = () -> {
 737					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 738						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 739						attachFileToConversation(conversation, i.next(), type);
 740					}
 741				};
 742				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 743					callback.onPresenceSelected();
 744				} else {
 745					activity.selectPresence(conversation, callback);
 746				}
 747				break;
 748			case ATTACHMENT_CHOICE_LOCATION:
 749				double latitude = data.getDoubleExtra("latitude", 0);
 750				double longitude = data.getDoubleExtra("longitude", 0);
 751				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 752				attachLocationToConversation(conversation, geo);
 753				break;
 754			case REQUEST_INVITE_TO_CONVERSATION:
 755				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 756				if (invite != null) {
 757					if (invite.execute(activity)) {
 758						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 759						activity.mToast.show();
 760					}
 761				}
 762				break;
 763		}
 764	}
 765
 766	private void handleNegativeActivityResult(int requestCode) {
 767		switch (requestCode) {
 768			//nothing to do for now
 769		}
 770	}
 771
 772	@Override
 773	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 774		super.onActivityResult(requestCode, resultCode, data);
 775		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 776		if (activity != null && activity.xmppConnectionService != null) {
 777			handleActivityResult(activityResult);
 778		} else {
 779			this.postponedActivityResult.push(activityResult);
 780		}
 781	}
 782
 783	public void unblockConversation(final Blockable conversation) {
 784		activity.xmppConnectionService.sendUnblockRequest(conversation);
 785	}
 786
 787	@Override
 788	public void onAttach(Activity activity) {
 789		super.onAttach(activity);
 790		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 791		if (activity instanceof ConversationActivity) {
 792			this.activity = (ConversationActivity) activity;
 793		} else {
 794			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationActivity");
 795		}
 796	}
 797
 798	@Override
 799	public void onDetach() {
 800		super.onDetach();
 801		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 802	}
 803
 804	@Override
 805	public void onCreate(Bundle savedInstanceState) {
 806		super.onCreate(savedInstanceState);
 807		setHasOptionsMenu(true);
 808	}
 809
 810	@Override
 811	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 812		menuInflater.inflate(R.menu.fragment_conversation, menu);
 813		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 814		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 815		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 816		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 817		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 818
 819
 820		if (conversation != null) {
 821			if (conversation.getMode() == Conversation.MODE_MULTI) {
 822				menuContactDetails.setVisible(false);
 823				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 824			} else {
 825				menuContactDetails.setVisible(!this.conversation.withSelf());
 826				menuMucDetails.setVisible(false);
 827				final XmppConnectionService service = activity.xmppConnectionService;
 828				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 829			}
 830			if (conversation.isMuted()) {
 831				menuMute.setVisible(false);
 832			} else {
 833				menuUnmute.setVisible(false);
 834			}
 835			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 836			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 837		}
 838		super.onCreateOptionsMenu(menu, menuInflater);
 839	}
 840
 841	@Override
 842	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 843		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 844		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 845
 846		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 847
 848		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 849		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 850
 851		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 852
 853		binding.messagesView.setOnScrollListener(mOnScrollListener);
 854		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 855		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 856		messageListAdapter.setOnContactPictureClicked(message -> {
 857			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 858			if (received) {
 859				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 860					Jid user = message.getCounterpart();
 861					if (user != null && !user.isBareJid()) {
 862						if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 863							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 864						}
 865						highlightInConference(user.getResourcepart());
 866					}
 867					return;
 868				} else {
 869					if (!message.getContact().isSelf()) {
 870						String fingerprint;
 871						if (message.getEncryption() == Message.ENCRYPTION_PGP
 872								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 873							fingerprint = "pgp";
 874						} else {
 875							fingerprint = message.getFingerprint();
 876						}
 877						activity.switchToContactDetails(message.getContact(), fingerprint);
 878						return;
 879					}
 880				}
 881			}
 882			Account account = message.getConversation().getAccount();
 883			Intent intent = new Intent(activity, EditAccountActivity.class);
 884			intent.putExtra("jid", account.getJid().toBareJid().toString());
 885			String fingerprint;
 886			if (message.getEncryption() == Message.ENCRYPTION_PGP
 887					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 888				fingerprint = "pgp";
 889			} else {
 890				fingerprint = message.getFingerprint();
 891			}
 892			intent.putExtra("fingerprint", fingerprint);
 893			startActivity(intent);
 894		});
 895		messageListAdapter.setOnContactPictureLongClicked(message -> {
 896			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 897				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 898					final MucOptions mucOptions = conversation.getMucOptions();
 899					if (!mucOptions.allowPm()) {
 900						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 901						return;
 902					}
 903					Jid user = message.getCounterpart();
 904					if (user != null && !user.isBareJid()) {
 905						if (mucOptions.isUserInRoom(user)) {
 906							privateMessageWith(user);
 907						} else {
 908							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 909						}
 910					}
 911				}
 912			} else {
 913				activity.showQrCode(conversation.getAccount().getShareableUri());
 914			}
 915		});
 916		messageListAdapter.setOnQuoteListener(this::quoteText);
 917		binding.messagesView.setAdapter(messageListAdapter);
 918
 919		registerForContextMenu(binding.messagesView);
 920
 921		return binding.getRoot();
 922	}
 923
 924	private void quoteText(String text) {
 925		if (binding.textinput.isEnabled()) {
 926			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 927			Editable editable = binding.textinput.getEditableText();
 928			int position = binding.textinput.getSelectionEnd();
 929			if (position == -1) position = editable.length();
 930			if (position > 0 && editable.charAt(position - 1) != '\n') {
 931				editable.insert(position++, "\n");
 932			}
 933			editable.insert(position, text);
 934			position += text.length();
 935			editable.insert(position++, "\n");
 936			if (position < editable.length() && editable.charAt(position) != '\n') {
 937				editable.insert(position, "\n");
 938			}
 939			binding.textinput.setSelection(position);
 940			binding.textinput.requestFocus();
 941			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
 942			if (inputMethodManager != null) {
 943				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
 944			}
 945		}
 946	}
 947
 948	private void quoteMessage(Message message) {
 949		quoteText(MessageUtils.prepareQuote(message));
 950	}
 951
 952	@Override
 953	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 954		synchronized (this.messageList) {
 955			super.onCreateContextMenu(menu, v, menuInfo);
 956			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 957			this.selectedMessage = this.messageList.get(acmi.position);
 958			populateContextMenu(menu);
 959		}
 960	}
 961
 962	private void populateContextMenu(ContextMenu menu) {
 963		final Message m = this.selectedMessage;
 964		final Transferable t = m.getTransferable();
 965		Message relevantForCorrection = m;
 966		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
 967			relevantForCorrection = relevantForCorrection.next();
 968		}
 969		if (m.getType() != Message.TYPE_STATUS) {
 970			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 971					&& m.getType() != Message.TYPE_PRIVATE
 972					&& t == null;
 973			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
 974					|| m.getEncryption() == Message.ENCRYPTION_PGP;
 975			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 976			menu.setHeaderTitle(R.string.message_options);
 977			MenuItem copyMessage = menu.findItem(R.id.copy_message);
 978			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
 979			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 980			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 981			MenuItem shareWith = menu.findItem(R.id.share_with);
 982			MenuItem sendAgain = menu.findItem(R.id.send_again);
 983			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 984			MenuItem downloadFile = menu.findItem(R.id.download_file);
 985			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 986			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 987			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
 988			if (!treatAsFile && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
 989				copyMessage.setVisible(true);
 990				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
 991			}
 992			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 993				retryDecryption.setVisible(true);
 994			}
 995			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 996					&& relevantForCorrection.isLastCorrectableMessage()
 997					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
 998				correctMessage.setVisible(true);
 999			}
1000			if (treatAsFile || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1001				shareWith.setVisible(true);
1002			}
1003			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1004				sendAgain.setVisible(true);
1005			}
1006			if (m.hasFileOnRemoteHost()
1007					|| m.isGeoUri()
1008					|| m.treatAsDownloadable()
1009					|| (t != null && t instanceof HttpDownloadConnection)) {
1010				copyUrl.setVisible(true);
1011			}
1012			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
1013				downloadFile.setVisible(true);
1014				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1015			}
1016			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1017					|| m.getStatus() == Message.STATUS_UNSEND
1018					|| m.getStatus() == Message.STATUS_OFFERED;
1019			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
1020				cancelTransmission.setVisible(true);
1021			}
1022			if (treatAsFile) {
1023				String path = m.getRelativeFilePath();
1024				if (path == null || !path.startsWith("/")) {
1025					deleteFile.setVisible(true);
1026					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1027				}
1028			}
1029			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1030				showErrorMessage.setVisible(true);
1031			}
1032		}
1033	}
1034
1035	@Override
1036	public boolean onContextItemSelected(MenuItem item) {
1037		switch (item.getItemId()) {
1038			case R.id.share_with:
1039				shareWith(selectedMessage);
1040				return true;
1041			case R.id.correct_message:
1042				correctMessage(selectedMessage);
1043				return true;
1044			case R.id.copy_message:
1045				copyMessage(selectedMessage);
1046				return true;
1047			case R.id.quote_message:
1048				quoteMessage(selectedMessage);
1049				return true;
1050			case R.id.send_again:
1051				resendMessage(selectedMessage);
1052				return true;
1053			case R.id.copy_url:
1054				copyUrl(selectedMessage);
1055				return true;
1056			case R.id.download_file:
1057				startDownloadable(selectedMessage);
1058				return true;
1059			case R.id.cancel_transmission:
1060				cancelTransmission(selectedMessage);
1061				return true;
1062			case R.id.retry_decryption:
1063				retryDecryption(selectedMessage);
1064				return true;
1065			case R.id.delete_file:
1066				deleteFile(selectedMessage);
1067				return true;
1068			case R.id.show_error_message:
1069				showErrorMessage(selectedMessage);
1070				return true;
1071			default:
1072				return super.onContextItemSelected(item);
1073		}
1074	}
1075
1076	@Override
1077	public boolean onOptionsItemSelected(final MenuItem item) {
1078		if (conversation == null) {
1079			return super.onOptionsItemSelected(item);
1080		}
1081		switch (item.getItemId()) {
1082			case R.id.encryption_choice_axolotl:
1083			case R.id.encryption_choice_pgp:
1084			case R.id.encryption_choice_none:
1085				handleEncryptionSelection(item);
1086				break;
1087			case R.id.attach_choose_picture:
1088			case R.id.attach_take_picture:
1089			case R.id.attach_record_video:
1090			case R.id.attach_choose_file:
1091			case R.id.attach_record_voice:
1092			case R.id.attach_location:
1093				handleAttachmentSelection(item);
1094				break;
1095			case R.id.action_archive:
1096				activity.xmppConnectionService.archiveConversation(conversation);
1097				activity.onConversationArchived(conversation);
1098				break;
1099			case R.id.action_contact_details:
1100				activity.switchToContactDetails(conversation.getContact());
1101				break;
1102			case R.id.action_muc_details:
1103				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1104				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1105				intent.putExtra("uuid", conversation.getUuid());
1106				startActivity(intent);
1107				break;
1108			case R.id.action_invite:
1109				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1110				break;
1111			case R.id.action_clear_history:
1112				clearHistoryDialog(conversation);
1113				break;
1114			case R.id.action_mute:
1115				muteConversationDialog(conversation);
1116				break;
1117			case R.id.action_unmute:
1118				unmuteConversation(conversation);
1119				break;
1120			case R.id.action_block:
1121			case R.id.action_unblock:
1122				final Activity activity = getActivity();
1123				if (activity instanceof XmppActivity) {
1124					BlockContactDialog.show((XmppActivity) activity, conversation);
1125				}
1126				break;
1127			default:
1128				break;
1129		}
1130		return super.onOptionsItemSelected(item);
1131	}
1132
1133	private void handleAttachmentSelection(MenuItem item) {
1134		switch (item.getItemId()) {
1135			case R.id.attach_choose_picture:
1136				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1137				break;
1138			case R.id.attach_take_picture:
1139				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1140				break;
1141			case R.id.attach_record_video:
1142				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1143				break;
1144			case R.id.attach_choose_file:
1145				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1146				break;
1147			case R.id.attach_record_voice:
1148				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1149				break;
1150			case R.id.attach_location:
1151				attachFile(ATTACHMENT_CHOICE_LOCATION);
1152				break;
1153		}
1154	}
1155
1156	private void handleEncryptionSelection(MenuItem item) {
1157		if (conversation == null) {
1158			return;
1159		}
1160		switch (item.getItemId()) {
1161			case R.id.encryption_choice_none:
1162				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1163				item.setChecked(true);
1164				break;
1165			case R.id.encryption_choice_pgp:
1166				if (activity.hasPgp()) {
1167					if (conversation.getAccount().getPgpSignature() != null) {
1168						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1169						item.setChecked(true);
1170					} else {
1171						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1172					}
1173				} else {
1174					activity.showInstallPgpDialog();
1175				}
1176				break;
1177			case R.id.encryption_choice_axolotl:
1178				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1179						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1180				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1181				item.setChecked(true);
1182				break;
1183			default:
1184				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1185				break;
1186		}
1187		activity.xmppConnectionService.updateConversation(conversation);
1188		updateChatMsgHint();
1189		getActivity().invalidateOptionsMenu();
1190		activity.refreshUi();
1191	}
1192
1193	public void attachFile(final int attachmentChoice) {
1194		if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1195			if (!hasStorageAndCameraPermission(attachmentChoice)) {
1196				return;
1197			}
1198		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1199			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1200				return;
1201			}
1202		}
1203		try {
1204			activity.getPreferences().edit()
1205					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1206					.apply();
1207		} catch (IllegalArgumentException e) {
1208			//just do not save
1209		}
1210		final int encryption = conversation.getNextEncryption();
1211		final int mode = conversation.getMode();
1212		if (encryption == Message.ENCRYPTION_PGP) {
1213			if (activity.hasPgp()) {
1214				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1215					activity.xmppConnectionService.getPgpEngine().hasKey(
1216							conversation.getContact(),
1217							new UiCallback<Contact>() {
1218
1219								@Override
1220								public void userInputRequried(PendingIntent pi, Contact contact) {
1221									startPendingIntent(pi, attachmentChoice);
1222								}
1223
1224								@Override
1225								public void success(Contact contact) {
1226									selectPresenceToAttachFile(attachmentChoice);
1227								}
1228
1229								@Override
1230								public void error(int error, Contact contact) {
1231									activity.replaceToast(getString(error));
1232								}
1233							});
1234				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1235					if (!conversation.getMucOptions().everybodyHasKeys()) {
1236						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1237						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1238						warning.show();
1239					}
1240					selectPresenceToAttachFile(attachmentChoice);
1241				} else {
1242					final ConversationFragment fragment = (ConversationFragment) getFragmentManager()
1243							.findFragmentByTag("conversation");
1244					if (fragment != null) {
1245						fragment.showNoPGPKeyDialog(false, (dialog, which) -> {
1246							conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1247							activity.xmppConnectionService.updateConversation(conversation);
1248							selectPresenceToAttachFile(attachmentChoice);
1249						});
1250					}
1251				}
1252			} else {
1253				activity.showInstallPgpDialog();
1254			}
1255		} else {
1256			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1257				selectPresenceToAttachFile(attachmentChoice);
1258			}
1259		}
1260	}
1261
1262	@Override
1263	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1264		if (grantResults.length > 0)
1265			if (allGranted(grantResults)) {
1266				if (requestCode == REQUEST_START_DOWNLOAD) {
1267					if (this.mPendingDownloadableMessage != null) {
1268						startDownloadable(this.mPendingDownloadableMessage);
1269					}
1270				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1271					if (this.mPendingEditorContent != null) {
1272						attachImageToConversation(this.mPendingEditorContent);
1273					}
1274				} else {
1275					attachFile(requestCode);
1276				}
1277			} else {
1278				@StringRes int res;
1279				if (Manifest.permission.CAMERA.equals(getFirstDenied(grantResults, permissions))) {
1280					res = R.string.no_camera_permission;
1281				} else {
1282					res = R.string.no_storage_permission;
1283				}
1284				Toast.makeText(getActivity(),res, Toast.LENGTH_SHORT).show();
1285			}
1286	}
1287
1288	private static boolean allGranted(int[] grantResults) {
1289		for(int grantResult : grantResults) {
1290			if (grantResult != PackageManager.PERMISSION_GRANTED) {
1291				return false;
1292			}
1293		}
1294		return true;
1295	}
1296
1297	private static String getFirstDenied(int[] grantResults, String[] permissions) {
1298		for(int i = 0; i < grantResults.length; ++i) {
1299			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
1300				return permissions[i];
1301			}
1302		}
1303		return null;
1304	}
1305
1306	public void startDownloadable(Message message) {
1307		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1308			this.mPendingDownloadableMessage = message;
1309			return;
1310		}
1311		Transferable transferable = message.getTransferable();
1312		if (transferable != null) {
1313			if (!transferable.start()) {
1314				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1315			}
1316		} else if (message.treatAsDownloadable()) {
1317			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1318		}
1319	}
1320
1321	@SuppressLint("InflateParams")
1322	protected void clearHistoryDialog(final Conversation conversation) {
1323		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1324		builder.setTitle(getString(R.string.clear_conversation_history));
1325		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1326		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1327		builder.setView(dialogView);
1328		builder.setNegativeButton(getString(R.string.cancel), null);
1329		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1330			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1331			if (endConversationCheckBox.isChecked()) {
1332				this.activity.xmppConnectionService.archiveConversation(conversation);
1333				this.activity.onConversationArchived(conversation);
1334			} else {
1335				activity.onConversationsListItemUpdated();
1336				refresh();
1337			}
1338		});
1339		builder.create().show();
1340	}
1341
1342	protected void muteConversationDialog(final Conversation conversation) {
1343		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1344		builder.setTitle(R.string.disable_notifications);
1345		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1346		final CharSequence[] labels = new CharSequence[durations.length];
1347		for(int i = 0; i < durations.length; ++i) {
1348			if (durations[i] == -1) {
1349				labels[i] = getString(R.string.until_further_notice);
1350			} else {
1351				labels[i] = TimeframeUtils.resolve(activity,1000L * durations[i]);
1352			}
1353		}
1354		builder.setItems(labels, (dialog, which) -> {
1355			final long till;
1356			if (durations[which] == -1) {
1357				till = Long.MAX_VALUE;
1358			} else {
1359				till = System.currentTimeMillis() + (durations[which] * 1000);
1360			}
1361			conversation.setMutedTill(till);
1362			activity.xmppConnectionService.updateConversation(conversation);
1363			activity.onConversationsListItemUpdated();
1364			refresh();
1365			getActivity().invalidateOptionsMenu();
1366		});
1367		builder.create().show();
1368	}
1369
1370	private boolean hasStoragePermission(int requestCode) {
1371		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1372			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1373				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1374				return false;
1375			} else {
1376				return true;
1377			}
1378		} else {
1379			return true;
1380		}
1381	}
1382
1383	private boolean hasStorageAndCameraPermission(int requestCode) {
1384		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1385			List<String> missingPermissions = new ArrayList<>();
1386			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1387				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1388			}
1389			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1390				missingPermissions.add(Manifest.permission.CAMERA);
1391			}
1392			if (missingPermissions.size() == 0) {
1393				return true;
1394			} else {
1395				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1396				return false;
1397			}
1398		} else {
1399			return true;
1400		}
1401	}
1402
1403	public void unmuteConversation(final Conversation conversation) {
1404		conversation.setMutedTill(0);
1405		this.activity.xmppConnectionService.updateConversation(conversation);
1406		this.activity.onConversationsListItemUpdated();
1407		refresh();
1408		getActivity().invalidateOptionsMenu();
1409	}
1410
1411	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1412		final Account account = conversation.getAccount();
1413		final PresenceSelector.OnPresenceSelected callback = () -> {
1414			Intent intent = new Intent();
1415			boolean chooser = false;
1416			String fallbackPackageId = null;
1417			switch (attachmentChoice) {
1418				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1419					intent.setAction(Intent.ACTION_GET_CONTENT);
1420					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
1421						intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1422					}
1423					intent.setType("image/*");
1424					chooser = true;
1425					break;
1426				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1427					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1428					break;
1429				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1430					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1431					pendingTakePhotoUri.push(uri);
1432					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1433					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1434					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1435					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1436					break;
1437				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1438					chooser = true;
1439					intent.setType("*/*");
1440					intent.addCategory(Intent.CATEGORY_OPENABLE);
1441					intent.setAction(Intent.ACTION_GET_CONTENT);
1442					break;
1443				case ATTACHMENT_CHOICE_RECORD_VOICE:
1444					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1445					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1446					break;
1447				case ATTACHMENT_CHOICE_LOCATION:
1448					intent.setAction("eu.siacs.conversations.location.request");
1449					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1450					break;
1451			}
1452			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1453				if (chooser) {
1454					startActivityForResult(
1455							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1456							attachmentChoice);
1457				} else {
1458					startActivityForResult(intent, attachmentChoice);
1459				}
1460			} else if (fallbackPackageId != null) {
1461				startActivity(getInstallApkIntent(fallbackPackageId));
1462			}
1463		};
1464		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1465			conversation.setNextCounterpart(null);
1466			callback.onPresenceSelected();
1467		} else {
1468			activity.selectPresence(conversation, callback);
1469		}
1470	}
1471
1472	private Intent getInstallApkIntent(final String packageId) {
1473		Intent intent = new Intent(Intent.ACTION_VIEW);
1474		intent.setData(Uri.parse("market://details?id=" + packageId));
1475		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1476			return intent;
1477		} else {
1478			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1479			return intent;
1480		}
1481	}
1482
1483	@Override
1484	public void onResume() {
1485		new Handler().post(() -> {
1486			final Activity activity = getActivity();
1487			if (activity == null) {
1488				return;
1489			}
1490			final PackageManager packageManager = activity.getPackageManager();
1491			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1492			getActivity().invalidateOptionsMenu();
1493		});
1494		super.onResume();
1495		if (activity != null && this.conversation != null) {
1496			activity.onConversationRead(this.conversation);
1497		}
1498	}
1499
1500	private void showErrorMessage(final Message message) {
1501		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1502		builder.setTitle(R.string.error_message);
1503		builder.setMessage(message.getErrorMessage());
1504		builder.setPositiveButton(R.string.confirm, null);
1505		builder.create().show();
1506	}
1507
1508	private void shareWith(Message message) {
1509		Intent shareIntent = new Intent();
1510		shareIntent.setAction(Intent.ACTION_SEND);
1511		if (message.isGeoUri()) {
1512			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1513			shareIntent.setType("text/plain");
1514		} else if (!message.isFileOrImage()) {
1515			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1516			shareIntent.setType("text/plain");
1517		} else {
1518			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1519			try {
1520				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1521			} catch (SecurityException e) {
1522				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1523				return;
1524			}
1525			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1526			String mime = message.getMimeType();
1527			if (mime == null) {
1528				mime = "*/*";
1529			}
1530			shareIntent.setType(mime);
1531		}
1532		try {
1533			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1534		} catch (ActivityNotFoundException e) {
1535			//This should happen only on faulty androids because normally chooser is always available
1536			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1537		}
1538	}
1539
1540	private void copyMessage(Message message) {
1541		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1542			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1543		}
1544	}
1545
1546	private void deleteFile(Message message) {
1547		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1548			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1549			activity.onConversationsListItemUpdated();
1550			refresh();
1551		}
1552	}
1553
1554	private void resendMessage(final Message message) {
1555		if (message.isFileOrImage()) {
1556			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1557			if (file.exists()) {
1558				final Conversation conversation = message.getConversation();
1559				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1560				if (!message.hasFileOnRemoteHost()
1561						&& xmppConnection != null
1562						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1563					activity.selectPresence(conversation, () -> {
1564						message.setCounterpart(conversation.getNextCounterpart());
1565						activity.xmppConnectionService.resendFailedMessages(message);
1566						new Handler().post(() -> {
1567							int size = messageList.size();
1568							this.binding.messagesView.setSelection(size - 1);
1569						});
1570					});
1571					return;
1572				}
1573			} else {
1574				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1575				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1576				activity.onConversationsListItemUpdated();
1577				refresh();
1578				return;
1579			}
1580		}
1581		activity.xmppConnectionService.resendFailedMessages(message);
1582		new Handler().post(() -> {
1583			int size = messageList.size();
1584			this.binding.messagesView.setSelection(size - 1);
1585		});	}
1586
1587	private void copyUrl(Message message) {
1588		final String url;
1589		final int resId;
1590		if (message.isGeoUri()) {
1591			resId = R.string.location;
1592			url = message.getBody();
1593		} else if (message.hasFileOnRemoteHost()) {
1594			resId = R.string.file_url;
1595			url = message.getFileParams().url.toString();
1596		} else {
1597			url = message.getBody().trim();
1598			resId = R.string.file_url;
1599		}
1600		if (activity.copyTextToClipboard(url, resId)) {
1601			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1602		}
1603	}
1604
1605	private void cancelTransmission(Message message) {
1606		Transferable transferable = message.getTransferable();
1607		if (transferable != null) {
1608			transferable.cancel();
1609		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1610			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1611		}
1612	}
1613
1614	private void retryDecryption(Message message) {
1615		message.setEncryption(Message.ENCRYPTION_PGP);
1616		activity.onConversationsListItemUpdated();
1617		refresh();
1618		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1619	}
1620
1621	private void privateMessageWith(final Jid counterpart) {
1622		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1623			activity.xmppConnectionService.sendChatState(conversation);
1624		}
1625		this.binding.textinput.setText("");
1626		this.conversation.setNextCounterpart(counterpart);
1627		updateChatMsgHint();
1628		updateSendButton();
1629		updateEditablity();
1630	}
1631
1632	private void correctMessage(Message message) {
1633		while (message.mergeable(message.next())) {
1634			message = message.next();
1635		}
1636		this.conversation.setCorrectingMessage(message);
1637		final Editable editable = binding.textinput.getText();
1638		this.conversation.setDraftMessage(editable.toString());
1639		this.binding.textinput.setText("");
1640		this.binding.textinput.append(message.getBody());
1641
1642	}
1643
1644	private void highlightInConference(String nick) {
1645		final Editable editable = this.binding.textinput.getText();
1646		String oldString = editable.toString().trim();
1647		final int pos = this.binding.textinput.getSelectionStart();
1648		if (oldString.isEmpty() || pos == 0) {
1649			editable.insert(0, nick + ": ");
1650		} else {
1651			final char before = editable.charAt(pos - 1);
1652			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1653			if (before == '\n') {
1654				editable.insert(pos, nick + ": ");
1655			} else {
1656				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1657					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1658						editable.insert(pos - 2, ", " + nick);
1659						return;
1660					}
1661				}
1662				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1663				if (Character.isWhitespace(after)) {
1664					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1665				}
1666			}
1667		}
1668	}
1669
1670	@Override
1671	public void onSaveInstanceState(Bundle outState) {
1672		super.onSaveInstanceState(outState);
1673		if (conversation != null) {
1674			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1675			final Uri uri = pendingTakePhotoUri.peek();
1676			if (uri != null) {
1677				outState.putString(STATE_PHOTO_URI, uri.toString());
1678			}
1679			final ScrollState scrollState = getScrollPosition();
1680			if (scrollState != null) {
1681				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1682			}
1683		}
1684	}
1685
1686	@Override
1687	public void onActivityCreated(Bundle savedInstanceState) {
1688		super.onActivityCreated(savedInstanceState);
1689		if (savedInstanceState == null) {
1690			return;
1691		}
1692		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1693		if (uuid != null) {
1694			this.pendingConversationsUuid.push(uuid);
1695			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1696			if (takePhotoUri != null) {
1697				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1698			}
1699			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1700		}
1701	}
1702
1703	@Override
1704	public void onStart() {
1705		super.onStart();
1706		if (this.reInitRequiredOnStart) {
1707			final Bundle extras = pendingExtras.pop();
1708			reInit(conversation, extras != null);
1709			if (extras != null) {
1710				processExtras(extras);
1711			}
1712		} else {
1713			Log.d(Config.LOGTAG, "skipped reinit on start");
1714		}
1715	}
1716
1717	@Override
1718	public void onStop() {
1719		super.onStop();
1720		final Activity activity = getActivity();
1721		if (activity == null || !activity.isChangingConfigurations()) {
1722			messageListAdapter.stopAudioPlayer();
1723		}
1724		if (this.conversation != null) {
1725			final String msg = this.binding.textinput.getText().toString();
1726			if (this.conversation.setNextMessage(msg)) {
1727				this.activity.xmppConnectionService.updateConversation(this.conversation);
1728			}
1729			updateChatState(this.conversation, msg);
1730			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1731		}
1732		this.reInitRequiredOnStart = true;
1733	}
1734
1735	private void updateChatState(final Conversation conversation, final String msg) {
1736		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1737		Account.State status = conversation.getAccount().getStatus();
1738		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1739			activity.xmppConnectionService.sendChatState(conversation);
1740		}
1741	}
1742
1743	private void saveMessageDraftStopAudioPlayer() {
1744		final Conversation previousConversation = this.conversation;
1745		if (this.activity == null || this.binding == null || previousConversation == null) {
1746			return;
1747		}
1748		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1749		final String msg = this.binding.textinput.getText().toString();
1750		if (previousConversation.setNextMessage(msg)) {
1751			activity.xmppConnectionService.updateConversation(previousConversation);
1752		}
1753		updateChatState(this.conversation, msg);
1754		messageListAdapter.stopAudioPlayer();
1755	}
1756
1757	public void reInit(Conversation conversation, Bundle extras) {
1758		this.saveMessageDraftStopAudioPlayer();
1759		if (this.reInit(conversation, extras != null)) {
1760			if (extras != null) {
1761				processExtras(extras);
1762			}
1763			this.reInitRequiredOnStart = false;
1764		} else {
1765			this.reInitRequiredOnStart = true;
1766			pendingExtras.push(extras);
1767		}
1768	}
1769
1770	private void reInit(Conversation conversation) {
1771		reInit(conversation, false);
1772	}
1773
1774	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1775		if (conversation == null) {
1776			return false;
1777		}
1778		this.conversation = conversation;
1779		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1780		if (this.activity == null || this.binding == null) {
1781			return false;
1782		}
1783		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1784
1785		if (this.conversation.isRead() && hasExtras) {
1786			Log.d(Config.LOGTAG, "trimming conversation");
1787			this.conversation.trim();
1788		}
1789
1790		setupIme();
1791
1792		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1793
1794		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1795		this.binding.textinput.setKeyboardListener(null);
1796		this.binding.textinput.setText("");
1797		this.binding.textinput.append(this.conversation.getNextMessage());
1798		this.binding.textinput.setKeyboardListener(this);
1799		messageListAdapter.updatePreferences();
1800		refresh(false);
1801		this.conversation.messagesLoaded.set(true);
1802
1803		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1804
1805		if (hasExtras || scrolledToBottomAndNoPending) {
1806			synchronized (this.messageList) {
1807				Log.d(Config.LOGTAG, "jump to first unread message");
1808				final Message first = conversation.getFirstUnreadMessage();
1809				final int bottom = Math.max(0, this.messageList.size() - 1);
1810				final int pos;
1811				if (first == null) {
1812					pos = bottom;
1813				} else {
1814					int i = getIndexOf(first.getUuid(), this.messageList);
1815					pos = i < 0 ? bottom : i;
1816				}
1817				this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
1818			}
1819		}
1820
1821		activity.onConversationRead(this.conversation);
1822		//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
1823		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1824		return true;
1825	}
1826
1827	private boolean scrolledToBottom() {
1828		if (this.binding == null) {
1829			return false;
1830		}
1831		final ListView listView = this.binding.messagesView;
1832		if (listView.getLastVisiblePosition() == listView.getAdapter().getCount() - 1) {
1833			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
1834			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
1835		} else {
1836			return false;
1837		}
1838	}
1839
1840	private void processExtras(Bundle extras) {
1841		final String downloadUuid = extras.getString(ConversationActivity.EXTRA_DOWNLOAD_UUID);
1842		final String text = extras.getString(ConversationActivity.EXTRA_TEXT);
1843		final String nick = extras.getString(ConversationActivity.EXTRA_NICK);
1844		final boolean pm = extras.getBoolean(ConversationActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1845		if (nick != null) {
1846			if (pm) {
1847				Jid jid = conversation.getJid();
1848				try {
1849					Jid next = Jid.fromParts(jid.getLocalpart(), jid.getDomainpart(), nick);
1850					privateMessageWith(next);
1851				} catch (final InvalidJidException ignored) {
1852					//do nothing
1853				}
1854			} else {
1855				highlightInConference(nick);
1856			}
1857		} else {
1858			appendText(text);
1859		}
1860		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1861		if (message != null) {
1862			startDownloadable(message);
1863		}
1864	}
1865
1866	private boolean showBlockSubmenu(View view) {
1867		final Jid jid = conversation.getJid();
1868		if (jid.isDomainJid()) {
1869			BlockContactDialog.show(activity, conversation);
1870		} else {
1871			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1872			popupMenu.inflate(R.menu.block);
1873			popupMenu.setOnMenuItemClickListener(menuItem -> {
1874				Blockable blockable;
1875				switch (menuItem.getItemId()) {
1876					case R.id.block_domain:
1877						blockable = conversation.getAccount().getRoster().getContact(jid.toDomainJid());
1878						break;
1879					default:
1880						blockable = conversation;
1881				}
1882				BlockContactDialog.show(activity, blockable);
1883				return true;
1884			});
1885			popupMenu.show();
1886		}
1887		return true;
1888	}
1889
1890	private void updateSnackBar(final Conversation conversation) {
1891		final Account account = conversation.getAccount();
1892		final XmppConnection connection = account.getXmppConnection();
1893		final int mode = conversation.getMode();
1894		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1895		if (account.getStatus() == Account.State.DISABLED) {
1896			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1897		} else if (conversation.isBlocked()) {
1898			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1899		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1900			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1901		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1902			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1903		} else if (mode == Conversation.MODE_MULTI
1904				&& !conversation.getMucOptions().online()
1905				&& account.getStatus() == Account.State.ONLINE) {
1906			switch (conversation.getMucOptions().getError()) {
1907				case NICK_IN_USE:
1908					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1909					break;
1910				case NO_RESPONSE:
1911					showSnackbar(R.string.joining_conference, 0, null);
1912					break;
1913				case SERVER_NOT_FOUND:
1914					if (conversation.receivedMessagesCount() > 0) {
1915						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
1916					} else {
1917						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1918					}
1919					break;
1920				case PASSWORD_REQUIRED:
1921					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1922					break;
1923				case BANNED:
1924					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1925					break;
1926				case MEMBERS_ONLY:
1927					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1928					break;
1929				case KICKED:
1930					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1931					break;
1932				case UNKNOWN:
1933					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
1934					break;
1935				case INVALID_NICK:
1936					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
1937				case SHUTDOWN:
1938					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
1939					break;
1940				default:
1941					hideSnackbar();
1942					break;
1943			}
1944		} else if (account.hasPendingPgpIntent(conversation)) {
1945			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1946		} else if (connection != null
1947				&& connection.getFeatures().blocking()
1948				&& conversation.countMessages() != 0
1949				&& !conversation.isBlocked()
1950				&& conversation.isWithStranger()) {
1951			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
1952		} else {
1953			hideSnackbar();
1954		}
1955	}
1956
1957	@Override
1958	public void refresh() {
1959		if (this.binding == null) {
1960			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
1961			return;
1962		}
1963		this.refresh(true);
1964	}
1965
1966	private void refresh(boolean notifyConversationRead) {
1967		synchronized (this.messageList) {
1968			if (this.conversation != null) {
1969				conversation.populateWithMessages(this.messageList);
1970				updateSnackBar(conversation);
1971				updateStatusMessages();
1972				this.messageListAdapter.notifyDataSetChanged();
1973				updateChatMsgHint();
1974				if (notifyConversationRead && activity != null) {
1975					activity.onConversationRead(this.conversation);
1976				}
1977				updateSendButton();
1978				updateEditablity();
1979			}
1980		}
1981	}
1982
1983	protected void messageSent() {
1984		mSendingPgpMessage.set(false);
1985		this.binding.textinput.setText("");
1986		if (conversation.setCorrectingMessage(null)) {
1987			this.binding.textinput.append(conversation.getDraftMessage());
1988			conversation.setDraftMessage(null);
1989		}
1990		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
1991			activity.xmppConnectionService.updateConversation(conversation);
1992		}
1993		updateChatMsgHint();
1994		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1995		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
1996		if (prefScrollToBottom || scrolledToBottom()) {
1997			new Handler().post(() -> {
1998				int size = messageList.size();
1999				this.binding.messagesView.setSelection(size - 1);
2000			});
2001		}
2002	}
2003
2004	public void setFocusOnInputField() {
2005		this.binding.textinput.requestFocus();
2006	}
2007
2008	public void doneSendingPgpMessage() {
2009		mSendingPgpMessage.set(false);
2010	}
2011
2012	public long getMaxHttpUploadSize(Conversation conversation) {
2013		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2014		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2015	}
2016
2017	private void updateEditablity() {
2018		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2019		this.binding.textinput.setFocusable(canWrite);
2020		this.binding.textinput.setFocusableInTouchMode(canWrite);
2021		this.binding.textSendButton.setEnabled(canWrite);
2022		this.binding.textinput.setCursorVisible(canWrite);
2023	}
2024
2025	public void updateSendButton() {
2026		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2027		final Conversation c = this.conversation;
2028		final Presence.Status status;
2029		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2030		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2031		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2032			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2033				status = Presence.Status.OFFLINE;
2034			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2035				status = c.getContact().getShownStatus();
2036			} else {
2037				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2038			}
2039		} else {
2040			status = Presence.Status.OFFLINE;
2041		}
2042		this.binding.textSendButton.setTag(action);
2043		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2044	}
2045
2046	protected void updateDateSeparators() {
2047		synchronized (this.messageList) {
2048			for (int i = 0; i < this.messageList.size(); ++i) {
2049				final Message current = this.messageList.get(i);
2050				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2051					this.messageList.add(i, Message.createDateSeparator(current));
2052					i++;
2053				}
2054			}
2055		}
2056	}
2057
2058	protected void updateStatusMessages() {
2059		updateDateSeparators();
2060		synchronized (this.messageList) {
2061			if (showLoadMoreMessages(conversation)) {
2062				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2063			}
2064			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2065				ChatState state = conversation.getIncomingChatState();
2066				if (state == ChatState.COMPOSING) {
2067					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2068				} else if (state == ChatState.PAUSED) {
2069					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2070				} else {
2071					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2072						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2073							return;
2074						} else {
2075							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2076								this.messageList.add(i + 1,
2077										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2078								return;
2079							}
2080						}
2081					}
2082				}
2083			} else {
2084				final MucOptions mucOptions = conversation.getMucOptions();
2085				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2086				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2087				ChatState state = ChatState.COMPOSING;
2088				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2089				if (users.size() == 0) {
2090					state = ChatState.PAUSED;
2091					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2092				}
2093				if (mucOptions.isPrivateAndNonAnonymous()) {
2094					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2095						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2096						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2097						for (ReadByMarker marker : markersForMessage) {
2098							if (!ReadByMarker.contains(marker, addedMarkers)) {
2099								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2100								MucOptions.User user = mucOptions.findUser(marker);
2101								if (user != null && !users.contains(user)) {
2102									shownMarkers.add(user);
2103								}
2104							}
2105						}
2106						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2107						final Message statusMessage;
2108						final int size = shownMarkers.size();
2109						if (size > 1) {
2110							final String body;
2111							if (size <= 4) {
2112								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2113							} else {
2114								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2115							}
2116							statusMessage = Message.createStatusMessage(conversation, body);
2117							statusMessage.setCounterparts(shownMarkers);
2118						} else if (size == 1) {
2119							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2120							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2121							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2122						} else {
2123							statusMessage = null;
2124						}
2125						if (statusMessage != null) {
2126							this.messageList.add(i + 1, statusMessage);
2127						}
2128						addedMarkers.add(markerForSender);
2129						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2130							break;
2131						}
2132					}
2133				}
2134				if (users.size() > 0) {
2135					Message statusMessage;
2136					if (users.size() == 1) {
2137						MucOptions.User user = users.get(0);
2138						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2139						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2140						statusMessage.setTrueCounterpart(user.getRealJid());
2141						statusMessage.setCounterpart(user.getFullJid());
2142					} else {
2143						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2144						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2145						statusMessage.setCounterparts(users);
2146					}
2147					this.messageList.add(statusMessage);
2148				}
2149
2150			}
2151		}
2152	}
2153
2154	public void stopScrolling() {
2155		long now = SystemClock.uptimeMillis();
2156		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2157		binding.messagesView.dispatchTouchEvent(cancel);
2158	}
2159
2160	private boolean showLoadMoreMessages(final Conversation c) {
2161		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2162		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2163		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2164	}
2165
2166	private boolean hasMamSupport(final Conversation c) {
2167		if (c.getMode() == Conversation.MODE_SINGLE) {
2168			final XmppConnection connection = c.getAccount().getXmppConnection();
2169			return connection != null && connection.getFeatures().mam();
2170		} else {
2171			return c.getMucOptions().mamSupport();
2172		}
2173	}
2174
2175	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2176		showSnackbar(message, action, clickListener, null);
2177	}
2178
2179	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2180		this.binding.snackbar.setVisibility(View.VISIBLE);
2181		this.binding.snackbar.setOnClickListener(null);
2182		this.binding.snackbarMessage.setText(message);
2183		this.binding.snackbarMessage.setOnClickListener(null);
2184		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2185		if (action != 0) {
2186			this.binding.snackbarAction.setText(action);
2187		}
2188		this.binding.snackbarAction.setOnClickListener(clickListener);
2189		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2190	}
2191
2192	protected void hideSnackbar() {
2193		this.binding.snackbar.setVisibility(View.GONE);
2194	}
2195
2196	protected void sendPlainTextMessage(Message message) {
2197		activity.xmppConnectionService.sendMessage(message);
2198		messageSent();
2199	}
2200
2201	protected void sendPgpMessage(final Message message) {
2202		final XmppConnectionService xmppService = activity.xmppConnectionService;
2203		final Contact contact = message.getConversation().getContact();
2204		if (!activity.hasPgp()) {
2205			activity.showInstallPgpDialog();
2206			return;
2207		}
2208		if (conversation.getAccount().getPgpSignature() == null) {
2209			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2210			return;
2211		}
2212		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2213			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2214		}
2215		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2216			if (contact.getPgpKeyId() != 0) {
2217				xmppService.getPgpEngine().hasKey(contact,
2218						new UiCallback<Contact>() {
2219
2220							@Override
2221							public void userInputRequried(PendingIntent pi, Contact contact) {
2222								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2223							}
2224
2225							@Override
2226							public void success(Contact contact) {
2227								encryptTextMessage(message);
2228							}
2229
2230							@Override
2231							public void error(int error, Contact contact) {
2232								activity.runOnUiThread(() -> Toast.makeText(activity,
2233										R.string.unable_to_connect_to_keychain,
2234										Toast.LENGTH_SHORT
2235								).show());
2236								mSendingPgpMessage.set(false);
2237							}
2238						});
2239
2240			} else {
2241				showNoPGPKeyDialog(false, (dialog, which) -> {
2242					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2243					xmppService.updateConversation(conversation);
2244					message.setEncryption(Message.ENCRYPTION_NONE);
2245					xmppService.sendMessage(message);
2246					messageSent();
2247				});
2248			}
2249		} else {
2250			if (conversation.getMucOptions().pgpKeysInUse()) {
2251				if (!conversation.getMucOptions().everybodyHasKeys()) {
2252					Toast warning = Toast
2253							.makeText(getActivity(),
2254									R.string.missing_public_keys,
2255									Toast.LENGTH_LONG);
2256					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2257					warning.show();
2258				}
2259				encryptTextMessage(message);
2260			} else {
2261				showNoPGPKeyDialog(true, (dialog, which) -> {
2262					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2263					message.setEncryption(Message.ENCRYPTION_NONE);
2264					xmppService.updateConversation(conversation);
2265					xmppService.sendMessage(message);
2266					messageSent();
2267				});
2268			}
2269		}
2270	}
2271
2272	public void encryptTextMessage(Message message) {
2273		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2274				new UiCallback<Message>() {
2275
2276					@Override
2277					public void userInputRequried(PendingIntent pi, Message message) {
2278						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2279					}
2280
2281					@Override
2282					public void success(Message message) {
2283						//TODO the following two call can be made before the callback
2284						getActivity().runOnUiThread(() -> messageSent());
2285					}
2286
2287					@Override
2288					public void error(final int error, Message message) {
2289						getActivity().runOnUiThread(() -> {
2290							doneSendingPgpMessage();
2291							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2292						});
2293
2294					}
2295				});
2296	}
2297
2298	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2299		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2300		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2301		if (plural) {
2302			builder.setTitle(getString(R.string.no_pgp_keys));
2303			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2304		} else {
2305			builder.setTitle(getString(R.string.no_pgp_key));
2306			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2307		}
2308		builder.setNegativeButton(getString(R.string.cancel), null);
2309		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2310		builder.create().show();
2311	}
2312
2313	protected void sendAxolotlMessage(final Message message) {
2314		activity.xmppConnectionService.sendMessage(message);
2315		messageSent();
2316	}
2317
2318	public void appendText(String text) {
2319		if (text == null) {
2320			return;
2321		}
2322		String previous = this.binding.textinput.getText().toString();
2323		if (previous.length() != 0 && !previous.endsWith(" ")) {
2324			text = " " + text;
2325		}
2326		this.binding.textinput.append(text);
2327	}
2328
2329	@Override
2330	public boolean onEnterPressed() {
2331		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2332		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2333		if (enterIsSend) {
2334			sendMessage();
2335			return true;
2336		} else {
2337			return false;
2338		}
2339	}
2340
2341	@Override
2342	public void onTypingStarted() {
2343		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2344		if (service == null) {
2345			return;
2346		}
2347		Account.State status = conversation.getAccount().getStatus();
2348		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2349			service.sendChatState(conversation);
2350		}
2351		updateSendButton();
2352	}
2353
2354	@Override
2355	public void onTypingStopped() {
2356		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2357		if (service == null) {
2358			return;
2359		}
2360		Account.State status = conversation.getAccount().getStatus();
2361		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2362			service.sendChatState(conversation);
2363		}
2364	}
2365
2366	@Override
2367	public void onTextDeleted() {
2368		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2369		if (service == null) {
2370			return;
2371		}
2372		Account.State status = conversation.getAccount().getStatus();
2373		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2374			service.sendChatState(conversation);
2375		}
2376		updateSendButton();
2377	}
2378
2379	@Override
2380	public void onTextChanged() {
2381		if (conversation != null && conversation.getCorrectingMessage() != null) {
2382			updateSendButton();
2383		}
2384	}
2385
2386	@Override
2387	public boolean onTabPressed(boolean repeated) {
2388		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2389			return false;
2390		}
2391		if (repeated) {
2392			completionIndex++;
2393		} else {
2394			lastCompletionLength = 0;
2395			completionIndex = 0;
2396			final String content = this.binding.textinput.getText().toString();
2397			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2398			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2399			firstWord = start == 0;
2400			incomplete = content.substring(start, lastCompletionCursor);
2401		}
2402		List<String> completions = new ArrayList<>();
2403		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2404			String name = user.getName();
2405			if (name != null && name.startsWith(incomplete)) {
2406				completions.add(name + (firstWord ? ": " : " "));
2407			}
2408		}
2409		Collections.sort(completions);
2410		if (completions.size() > completionIndex) {
2411			String completion = completions.get(completionIndex).substring(incomplete.length());
2412			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2413			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2414			lastCompletionLength = completion.length();
2415		} else {
2416			completionIndex = -1;
2417			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2418			lastCompletionLength = 0;
2419		}
2420		return true;
2421	}
2422
2423	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2424		try {
2425			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2426		} catch (final SendIntentException ignored) {
2427		}
2428	}
2429
2430	@Override
2431	public void onBackendConnected() {
2432		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2433		String uuid = pendingConversationsUuid.pop();
2434		if (uuid != null) {
2435			Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2436			if (conversation == null) {
2437				Log.d(Config.LOGTAG, "unable to restore activity");
2438				clearPending();
2439				return;
2440			}
2441			reInit(conversation);
2442			ScrollState scrollState = pendingScrollState.pop();
2443			if (scrollState != null) {
2444				setScrollPosition(scrollState);
2445			}
2446		}
2447		ActivityResult activityResult = postponedActivityResult.pop();
2448		if (activityResult != null) {
2449			handleActivityResult(activityResult);
2450		}
2451		clearPending();
2452	}
2453
2454	private void clearPending() {
2455		if (postponedActivityResult.pop() != null) {
2456			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2457		}
2458		pendingScrollState.pop();
2459		if (pendingTakePhotoUri.pop() != null) {
2460			Log.e(Config.LOGTAG, "cleared pending photo uri");
2461		}
2462	}
2463
2464	public Conversation getConversation() {
2465		return conversation;
2466	}
2467}