ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.content.SharedPreferences;
   7import android.content.pm.PackageManager;
   8import android.databinding.DataBindingUtil;
   9import android.net.Uri;
  10import android.os.Build;
  11import android.preference.PreferenceManager;
  12import android.provider.MediaStore;
  13import android.support.annotation.IdRes;
  14import android.support.annotation.NonNull;
  15import android.support.annotation.StringRes;
  16import android.support.v7.app.AlertDialog;
  17import android.app.Fragment;
  18import android.app.PendingIntent;
  19import android.content.ActivityNotFoundException;
  20import android.content.Context;
  21import android.content.DialogInterface;
  22import android.content.Intent;
  23import android.content.IntentSender.SendIntentException;
  24import android.os.Bundle;
  25import android.os.Handler;
  26import android.os.SystemClock;
  27import android.support.v13.view.inputmethod.InputConnectionCompat;
  28import android.support.v13.view.inputmethod.InputContentInfoCompat;
  29import android.text.Editable;
  30import android.util.Log;
  31import android.view.ContextMenu;
  32import android.view.ContextMenu.ContextMenuInfo;
  33import android.view.Gravity;
  34import android.view.LayoutInflater;
  35import android.view.Menu;
  36import android.view.MenuInflater;
  37import android.view.MenuItem;
  38import android.view.MotionEvent;
  39import android.view.View;
  40import android.view.View.OnClickListener;
  41import android.view.ViewGroup;
  42import android.view.inputmethod.EditorInfo;
  43import android.view.inputmethod.InputMethodManager;
  44import android.widget.AbsListView;
  45import android.widget.AbsListView.OnScrollListener;
  46import android.widget.AdapterView;
  47import android.widget.AdapterView.AdapterContextMenuInfo;
  48import android.widget.CheckBox;
  49import android.widget.ListView;
  50import android.widget.PopupMenu;
  51import android.widget.TextView.OnEditorActionListener;
  52import android.widget.Toast;
  53
  54import java.util.ArrayList;
  55import java.util.Arrays;
  56import java.util.Collections;
  57import java.util.HashSet;
  58import java.util.Iterator;
  59import java.util.List;
  60import java.util.Set;
  61import java.util.UUID;
  62import java.util.concurrent.atomic.AtomicBoolean;
  63
  64import eu.siacs.conversations.Config;
  65import eu.siacs.conversations.R;
  66import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  67import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  68import eu.siacs.conversations.databinding.FragmentConversationBinding;
  69import eu.siacs.conversations.entities.Account;
  70import eu.siacs.conversations.entities.Blockable;
  71import eu.siacs.conversations.entities.Contact;
  72import eu.siacs.conversations.entities.Conversation;
  73import eu.siacs.conversations.entities.DownloadableFile;
  74import eu.siacs.conversations.entities.Message;
  75import eu.siacs.conversations.entities.MucOptions;
  76import eu.siacs.conversations.entities.Presence;
  77import eu.siacs.conversations.entities.ReadByMarker;
  78import eu.siacs.conversations.entities.Transferable;
  79import eu.siacs.conversations.entities.TransferablePlaceholder;
  80import eu.siacs.conversations.http.HttpDownloadConnection;
  81import eu.siacs.conversations.persistance.FileBackend;
  82import eu.siacs.conversations.services.MessageArchiveService;
  83import eu.siacs.conversations.services.XmppConnectionService;
  84import eu.siacs.conversations.ui.adapter.MessageAdapter;
  85import eu.siacs.conversations.ui.util.ActivityResult;
  86import eu.siacs.conversations.ui.util.AttachmentTool;
  87import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  88import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.ScrollState;
  92import eu.siacs.conversations.ui.util.SendButtonAction;
  93import eu.siacs.conversations.ui.util.SendButtonTool;
  94import eu.siacs.conversations.ui.widget.EditMessage;
  95import eu.siacs.conversations.utils.MessageUtils;
  96import eu.siacs.conversations.utils.NickValidityChecker;
  97import eu.siacs.conversations.utils.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.jingle.JingleConnection;
 103import rocks.xmpp.addr.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	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 140	public Uri mPendingEditorContent = null;
 141	protected MessageAdapter messageListAdapter;
 142	private Conversation conversation;
 143	private FragmentConversationBinding binding;
 144	private Toast messageLoaderToast;
 145	private ConversationsActivity activity;
 146	private boolean reInitRequiredOnStart = true;
 147	private OnClickListener clickToMuc = new OnClickListener() {
 148
 149		@Override
 150		public void onClick(View v) {
 151			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 152			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 153			intent.putExtra("uuid", conversation.getUuid());
 154			startActivity(intent);
 155		}
 156	};
 157	private OnClickListener leaveMuc = new OnClickListener() {
 158
 159		@Override
 160		public void onClick(View v) {
 161			activity.xmppConnectionService.archiveConversation(conversation);
 162		}
 163	};
 164	private OnClickListener joinMuc = new OnClickListener() {
 165
 166		@Override
 167		public void onClick(View v) {
 168			activity.xmppConnectionService.joinMuc(conversation);
 169		}
 170	};
 171	private OnClickListener enterPassword = new OnClickListener() {
 172
 173		@Override
 174		public void onClick(View v) {
 175			MucOptions muc = conversation.getMucOptions();
 176			String password = muc.getPassword();
 177			if (password == null) {
 178				password = "";
 179			}
 180			activity.quickPasswordEdit(password, value -> {
 181				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 182				return null;
 183			});
 184		}
 185	};
 186	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 187
 188		@Override
 189		public void onScrollStateChanged(AbsListView view, int scrollState) {
 190			// TODO Auto-generated method stub
 191
 192		}
 193
 194		@Override
 195		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 196			synchronized (ConversationFragment.this.messageList) {
 197				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 198					long timestamp;
 199					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 200						timestamp = messageList.get(1).getTimeSent();
 201					} else {
 202						timestamp = messageList.get(0).getTimeSent();
 203					}
 204					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 205						@Override
 206						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 207							if (ConversationFragment.this.conversation != conversation) {
 208								conversation.messagesLoaded.set(true);
 209								return;
 210							}
 211							runOnUiThread(() -> {
 212								final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 213								Message message = null;
 214								int childPos;
 215								for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 216									message = messageList.get(oldPosition + childPos);
 217									if (message.getType() != Message.TYPE_STATUS) {
 218										break;
 219									}
 220								}
 221								final String uuid = message != null ? message.getUuid() : null;
 222								View v = binding.messagesView.getChildAt(childPos);
 223								final int pxOffset = (v == null) ? 0 : v.getTop();
 224								ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 225								try {
 226									updateStatusMessages();
 227								} catch (IllegalStateException e) {
 228									Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 229								}
 230								messageListAdapter.notifyDataSetChanged();
 231								int pos = Math.max(getIndexOf(uuid, messageList), 0);
 232								binding.messagesView.setSelectionFromTop(pos, pxOffset);
 233								if (messageLoaderToast != null) {
 234									messageLoaderToast.cancel();
 235								}
 236								conversation.messagesLoaded.set(true);
 237							});
 238						}
 239
 240						@Override
 241						public void informUser(final int resId) {
 242
 243							runOnUiThread(() -> {
 244								if (messageLoaderToast != null) {
 245									messageLoaderToast.cancel();
 246								}
 247								if (ConversationFragment.this.conversation != conversation) {
 248									return;
 249								}
 250								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 251								messageLoaderToast.show();
 252							});
 253
 254						}
 255					});
 256
 257				}
 258			}
 259		}
 260	};
 261	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 262		@Override
 263		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 264			// try to get permission to read the image, if applicable
 265			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 266				try {
 267					inputContentInfo.requestPermission();
 268				} catch (Exception e) {
 269					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 270					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 271					).show();
 272					return false;
 273				}
 274			}
 275			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 276				attachImageToConversation(inputContentInfo.getContentUri());
 277			} else {
 278				mPendingEditorContent = inputContentInfo.getContentUri();
 279			}
 280			return true;
 281		}
 282	};
 283	private Message selectedMessage;
 284	private OnClickListener mEnableAccountListener = new OnClickListener() {
 285		@Override
 286		public void onClick(View v) {
 287			final Account account = conversation == null ? null : conversation.getAccount();
 288			if (account != null) {
 289				account.setOption(Account.OPTION_DISABLED, false);
 290				activity.xmppConnectionService.updateAccount(account);
 291			}
 292		}
 293	};
 294	private OnClickListener mUnblockClickListener = new OnClickListener() {
 295		@Override
 296		public void onClick(final View v) {
 297			v.post(() -> v.setVisibility(View.INVISIBLE));
 298			if (conversation.isDomainBlocked()) {
 299				BlockContactDialog.show(activity, conversation);
 300			} else {
 301				unblockConversation(conversation);
 302			}
 303		}
 304	};
 305	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 306	private OnClickListener mAddBackClickListener = new OnClickListener() {
 307
 308		@Override
 309		public void onClick(View v) {
 310			final Contact contact = conversation == null ? null : conversation.getContact();
 311			if (contact != null) {
 312				activity.xmppConnectionService.createContact(contact, true);
 313				activity.switchToContactDetails(contact);
 314			}
 315		}
 316	};
 317	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 318	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 319		@Override
 320		public void onClick(View v) {
 321			final Contact contact = conversation == null ? null : conversation.getContact();
 322			if (contact != null) {
 323				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 324						activity.xmppConnectionService.getPresenceGenerator()
 325								.sendPresenceUpdatesTo(contact));
 326				hideSnackbar();
 327			}
 328		}
 329	};
 330	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 331
 332		@Override
 333		public void onClick(View v) {
 334			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 335			if (pendingIntent != null) {
 336				try {
 337					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 338							REQUEST_DECRYPT_PGP,
 339							null,
 340							0,
 341							0,
 342							0);
 343				} catch (SendIntentException e) {
 344					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 345					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 346				}
 347			}
 348			updateSnackBar(conversation);
 349		}
 350	};
 351	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 352	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 353		if (actionId == EditorInfo.IME_ACTION_SEND) {
 354			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 355			if (imm != null && imm.isFullscreenMode()) {
 356				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 357			}
 358			sendMessage();
 359			return true;
 360		} else {
 361			return false;
 362		}
 363	};
 364	private OnClickListener mSendButtonListener = new OnClickListener() {
 365
 366		@Override
 367		public void onClick(View v) {
 368			Object tag = v.getTag();
 369			if (tag instanceof SendButtonAction) {
 370				SendButtonAction action = (SendButtonAction) tag;
 371				switch (action) {
 372					case TAKE_PHOTO:
 373					case RECORD_VIDEO:
 374					case SEND_LOCATION:
 375					case RECORD_VOICE:
 376					case CHOOSE_PICTURE:
 377						attachFile(action.toChoice());
 378						break;
 379					case CANCEL:
 380						if (conversation != null) {
 381							if (conversation.setCorrectingMessage(null)) {
 382								binding.textinput.setText("");
 383								binding.textinput.append(conversation.getDraftMessage());
 384								conversation.setDraftMessage(null);
 385							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 386								conversation.setNextCounterpart(null);
 387							}
 388							updateChatMsgHint();
 389							updateSendButton();
 390							updateEditablity();
 391						}
 392						break;
 393					default:
 394						sendMessage();
 395				}
 396			} else {
 397				sendMessage();
 398			}
 399		}
 400	};
 401	private int completionIndex = 0;
 402	private int lastCompletionLength = 0;
 403	private String incomplete;
 404	private int lastCompletionCursor;
 405	private boolean firstWord = false;
 406	private Message mPendingDownloadableMessage;
 407
 408	private static ConversationFragment findConversationFragment(Activity activity) {
 409		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 410		if (fragment != null && fragment instanceof ConversationFragment) {
 411			return (ConversationFragment) fragment;
 412		}
 413		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 414		if (fragment != null && fragment instanceof ConversationFragment) {
 415			return (ConversationFragment) fragment;
 416		}
 417		return null;
 418	}
 419
 420	public static void startStopPending(Activity activity) {
 421		ConversationFragment fragment = findConversationFragment(activity);
 422		if (fragment != null) {
 423			fragment.messageListAdapter.startStopPending();
 424		}
 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 static boolean allGranted(int[] grantResults) {
 473		for (int grantResult : grantResults) {
 474			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 475				return false;
 476			}
 477		}
 478		return true;
 479	}
 480
 481	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 482		for (int i = 0; i < grantResults.length; ++i) {
 483			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 484				return permissions[i];
 485			}
 486		}
 487		return null;
 488	}
 489
 490	private int getIndexOf(String uuid, List<Message> messages) {
 491		if (uuid == null) {
 492			return messages.size() - 1;
 493		}
 494		for (int i = 0; i < messages.size(); ++i) {
 495			if (uuid.equals(messages.get(i).getUuid())) {
 496				return i;
 497			} else {
 498				Message next = messages.get(i);
 499				while (next != null && next.wasMergedIntoPrevious()) {
 500					if (uuid.equals(next.getUuid())) {
 501						return i;
 502					}
 503					next = next.next();
 504				}
 505
 506			}
 507		}
 508		return -1;
 509	}
 510
 511	private ScrollState getScrollPosition() {
 512		final ListView listView = this.binding.messagesView;
 513		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 514			return null;
 515		} else {
 516			final int pos = listView.getFirstVisiblePosition();
 517			final View view = listView.getChildAt(0);
 518			if (view == null) {
 519				return null;
 520			} else {
 521				return new ScrollState(pos, view.getTop());
 522			}
 523		}
 524	}
 525
 526	private void setScrollPosition(ScrollState scrollPosition) {
 527		if (scrollPosition != null) {
 528			//TODO maybe this needs a 'post'
 529			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 530		}
 531	}
 532
 533	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 534		if (conversation == null) {
 535			return;
 536		}
 537		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 538
 539			@Override
 540			public void success(Message message) {
 541
 542			}
 543
 544			@Override
 545			public void error(int errorCode, Message object) {
 546				//TODO show possible pgp error
 547			}
 548
 549			@Override
 550			public void userInputRequried(PendingIntent pi, Message object) {
 551
 552			}
 553		});
 554	}
 555
 556	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 557		if (conversation == null) {
 558			return;
 559		}
 560		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 561		prepareFileToast.show();
 562		activity.delegateUriPermissionsToService(uri);
 563		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 564			@Override
 565			public void inform(final String text) {
 566				hidePrepareFileToast(prepareFileToast);
 567				runOnUiThread(() -> activity.replaceToast(text));
 568			}
 569
 570			@Override
 571			public void success(Message message) {
 572				runOnUiThread(() -> activity.hideToast());
 573				hidePrepareFileToast(prepareFileToast);
 574			}
 575
 576			@Override
 577			public void error(final int errorCode, Message message) {
 578				hidePrepareFileToast(prepareFileToast);
 579				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 580
 581			}
 582
 583			@Override
 584			public void userInputRequried(PendingIntent pi, Message message) {
 585				hidePrepareFileToast(prepareFileToast);
 586			}
 587		});
 588	}
 589
 590	public void attachImageToConversation(Uri uri) {
 591		this.attachImageToConversation(conversation, uri);
 592	}
 593
 594	private void attachImageToConversation(Conversation conversation, Uri uri) {
 595		if (conversation == null) {
 596			return;
 597		}
 598		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 599		prepareFileToast.show();
 600		activity.delegateUriPermissionsToService(uri);
 601		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 602				new UiCallback<Message>() {
 603
 604					@Override
 605					public void userInputRequried(PendingIntent pi, Message object) {
 606						hidePrepareFileToast(prepareFileToast);
 607					}
 608
 609					@Override
 610					public void success(Message message) {
 611						hidePrepareFileToast(prepareFileToast);
 612					}
 613
 614					@Override
 615					public void error(final int error, Message message) {
 616						hidePrepareFileToast(prepareFileToast);
 617						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 618					}
 619				});
 620	}
 621
 622	private void hidePrepareFileToast(final Toast prepareFileToast) {
 623		if (prepareFileToast != null && activity != null) {
 624			activity.runOnUiThread(prepareFileToast::cancel);
 625		}
 626	}
 627
 628	private void sendMessage() {
 629		final String body = this.binding.textinput.getText().toString();
 630		final Conversation conversation = this.conversation;
 631		if (body.length() == 0 || conversation == null) {
 632			return;
 633		}
 634		final Message message;
 635		if (conversation.getCorrectingMessage() == null) {
 636			message = new Message(conversation, body, conversation.getNextEncryption());
 637			if (conversation.getMode() == Conversation.MODE_MULTI) {
 638				final Jid nextCounterpart = conversation.getNextCounterpart();
 639				if (nextCounterpart != null) {
 640					message.setCounterpart(nextCounterpart);
 641					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 642					message.setType(Message.TYPE_PRIVATE);
 643				}
 644			}
 645		} else {
 646			message = conversation.getCorrectingMessage();
 647			message.setBody(body);
 648			message.setEdited(message.getUuid());
 649			message.setUuid(UUID.randomUUID().toString());
 650		}
 651		switch (message.getConversation().getNextEncryption()) {
 652			case Message.ENCRYPTION_PGP:
 653				sendPgpMessage(message);
 654				break;
 655			case Message.ENCRYPTION_AXOLOTL:
 656				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 657					sendMessage(message);
 658				}
 659				break;
 660			default:
 661				sendMessage(message);
 662		}
 663	}
 664
 665	protected boolean trustKeysIfNeeded(int requestCode) {
 666		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 667	}
 668
 669	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 670		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 671		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 672		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 673		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 674		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 675		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 676		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 677		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 678			axolotlService.createSessionsIfNeeded(conversation);
 679			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 680			String[] contacts = new String[targets.size()];
 681			for (int i = 0; i < contacts.length; ++i) {
 682				contacts[i] = targets.get(i).toString();
 683			}
 684			intent.putExtra("contacts", contacts);
 685			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 686			intent.putExtra("choice", attachmentChoice);
 687			intent.putExtra("conversation", conversation.getUuid());
 688			startActivityForResult(intent, requestCode);
 689			return true;
 690		} else {
 691			return false;
 692		}
 693	}
 694
 695	public void updateChatMsgHint() {
 696		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 697		if (conversation.getCorrectingMessage() != null) {
 698			this.binding.textinput.setHint(R.string.send_corrected_message);
 699		} else if (multi && conversation.getNextCounterpart() != null) {
 700			this.binding.textinput.setHint(getString(
 701					R.string.send_private_message_to,
 702					conversation.getNextCounterpart().getResource()));
 703		} else if (multi && !conversation.getMucOptions().participating()) {
 704			this.binding.textinput.setHint(R.string.you_are_not_participating);
 705		} else {
 706			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 707			getActivity().invalidateOptionsMenu();
 708		}
 709	}
 710
 711	public void setupIme() {
 712		this.binding.textinput.refreshIme();
 713	}
 714
 715	private void handleActivityResult(ActivityResult activityResult) {
 716		if (activityResult.resultCode == Activity.RESULT_OK) {
 717			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 718		} else {
 719			handleNegativeActivityResult(activityResult.requestCode);
 720		}
 721	}
 722
 723	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 724		switch (requestCode) {
 725			case REQUEST_TRUST_KEYS_TEXT:
 726				final String body = this.binding.textinput.getText().toString();
 727				Message message = new Message(conversation, body, conversation.getNextEncryption());
 728				sendMessage(message);
 729				break;
 730			case REQUEST_TRUST_KEYS_MENU:
 731				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 732				selectPresenceToAttachFile(choice);
 733				break;
 734			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 735				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 736				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 737					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 738					attachImageToConversation(conversation, i.next());
 739				}
 740				break;
 741			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 742				Uri takePhotoUri = pendingTakePhotoUri.pop();
 743				if (takePhotoUri != null) {
 744					attachImageToConversation(conversation, takePhotoUri);
 745				} else {
 746					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 747				}
 748				break;
 749			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 750			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 751			case ATTACHMENT_CHOICE_RECORD_VOICE:
 752				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 753				String type = data.getType();
 754				final PresenceSelector.OnPresenceSelected callback = () -> {
 755					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 756						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 757						attachFileToConversation(conversation, i.next(), type);
 758					}
 759				};
 760				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 761					callback.onPresenceSelected();
 762				} else {
 763					activity.selectPresence(conversation, callback);
 764				}
 765				break;
 766			case ATTACHMENT_CHOICE_LOCATION:
 767				double latitude = data.getDoubleExtra("latitude", 0);
 768				double longitude = data.getDoubleExtra("longitude", 0);
 769				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 770				attachLocationToConversation(conversation, geo);
 771				break;
 772			case REQUEST_INVITE_TO_CONVERSATION:
 773				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 774				if (invite != null) {
 775					if (invite.execute(activity)) {
 776						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 777						activity.mToast.show();
 778					}
 779				}
 780				break;
 781		}
 782	}
 783
 784	private void handleNegativeActivityResult(int requestCode) {
 785		switch (requestCode) {
 786			//nothing to do for now
 787		}
 788	}
 789
 790	@Override
 791	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 792		super.onActivityResult(requestCode, resultCode, data);
 793		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 794		if (activity != null && activity.xmppConnectionService != null) {
 795			handleActivityResult(activityResult);
 796		} else {
 797			this.postponedActivityResult.push(activityResult);
 798		}
 799	}
 800
 801	public void unblockConversation(final Blockable conversation) {
 802		activity.xmppConnectionService.sendUnblockRequest(conversation);
 803	}
 804
 805	@Override
 806	public void onAttach(Activity activity) {
 807		super.onAttach(activity);
 808		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 809		if (activity instanceof ConversationsActivity) {
 810			this.activity = (ConversationsActivity) activity;
 811		} else {
 812			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 813		}
 814	}
 815
 816	@Override
 817	public void onDetach() {
 818		super.onDetach();
 819		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 820	}
 821
 822	@Override
 823	public void onCreate(Bundle savedInstanceState) {
 824		super.onCreate(savedInstanceState);
 825		setHasOptionsMenu(true);
 826	}
 827
 828	@Override
 829	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 830		menuInflater.inflate(R.menu.fragment_conversation, menu);
 831		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 832		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 833		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 834		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 835		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 836
 837
 838		if (conversation != null) {
 839			if (conversation.getMode() == Conversation.MODE_MULTI) {
 840				menuContactDetails.setVisible(false);
 841				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 842			} else {
 843				menuContactDetails.setVisible(!this.conversation.withSelf());
 844				menuMucDetails.setVisible(false);
 845				final XmppConnectionService service = activity.xmppConnectionService;
 846				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 847			}
 848			if (conversation.isMuted()) {
 849				menuMute.setVisible(false);
 850			} else {
 851				menuUnmute.setVisible(false);
 852			}
 853			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 854			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 855		}
 856		super.onCreateOptionsMenu(menu, menuInflater);
 857	}
 858
 859	@Override
 860	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 861		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 862		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 863
 864		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 865
 866		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 867		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 868
 869		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 870
 871		binding.messagesView.setOnScrollListener(mOnScrollListener);
 872		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 873		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 874		messageListAdapter.setOnContactPictureClicked(message -> {
 875			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 876			if (received) {
 877				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 878					Jid user = message.getCounterpart();
 879					if (user != null && !user.isBareJid()) {
 880						final MucOptions mucOptions = message.getConversation().getMucOptions();
 881						if (mucOptions.participating() || message.getConversation().getNextCounterpart() != null) {
 882							if (!mucOptions.isUserInRoom(user)) {
 883								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 884							}
 885							highlightInConference(user.getResource());
 886						} else {
 887							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 888						}
 889					}
 890					return;
 891				} else {
 892					if (!message.getContact().isSelf()) {
 893						String fingerprint;
 894						if (message.getEncryption() == Message.ENCRYPTION_PGP
 895								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 896							fingerprint = "pgp";
 897						} else {
 898							fingerprint = message.getFingerprint();
 899						}
 900						activity.switchToContactDetails(message.getContact(), fingerprint);
 901						return;
 902					}
 903				}
 904			}
 905			Account account = message.getConversation().getAccount();
 906			Intent intent = new Intent(activity, EditAccountActivity.class);
 907			intent.putExtra("jid", account.getJid().asBareJid().toString());
 908			String fingerprint;
 909			if (message.getEncryption() == Message.ENCRYPTION_PGP
 910					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 911				fingerprint = "pgp";
 912			} else {
 913				fingerprint = message.getFingerprint();
 914			}
 915			intent.putExtra("fingerprint", fingerprint);
 916			startActivity(intent);
 917		});
 918		messageListAdapter.setOnContactPictureLongClicked(message -> {
 919			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 920				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 921					final MucOptions mucOptions = conversation.getMucOptions();
 922					if (!mucOptions.allowPm()) {
 923						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 924						return;
 925					}
 926					Jid user = message.getCounterpart();
 927					if (user != null && !user.isBareJid()) {
 928						if (mucOptions.isUserInRoom(user)) {
 929							privateMessageWith(user);
 930						} else {
 931							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 932						}
 933					}
 934				}
 935			} else {
 936				activity.showQrCode(conversation.getAccount().getShareableUri());
 937			}
 938		});
 939		messageListAdapter.setOnQuoteListener(this::quoteText);
 940		binding.messagesView.setAdapter(messageListAdapter);
 941
 942		registerForContextMenu(binding.messagesView);
 943
 944		return binding.getRoot();
 945	}
 946
 947	private void quoteText(String text) {
 948		if (binding.textinput.isEnabled()) {
 949			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 950			Editable editable = binding.textinput.getEditableText();
 951			int position = binding.textinput.getSelectionEnd();
 952			if (position == -1) position = editable.length();
 953			if (position > 0 && editable.charAt(position - 1) != '\n') {
 954				editable.insert(position++, "\n");
 955			}
 956			editable.insert(position, text);
 957			position += text.length();
 958			editable.insert(position++, "\n");
 959			if (position < editable.length() && editable.charAt(position) != '\n') {
 960				editable.insert(position, "\n");
 961			}
 962			binding.textinput.setSelection(position);
 963			binding.textinput.requestFocus();
 964			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
 965			if (inputMethodManager != null) {
 966				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
 967			}
 968		}
 969	}
 970
 971	private static void hideSoftKeyboard(final Activity activity) {
 972		InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 973		View view = activity.getCurrentFocus();
 974		if (view != null && imm != null) {
 975			imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 976		}
 977	}
 978
 979	private void quoteMessage(Message message) {
 980		quoteText(MessageUtils.prepareQuote(message));
 981	}
 982
 983	@Override
 984	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 985		synchronized (this.messageList) {
 986			super.onCreateContextMenu(menu, v, menuInfo);
 987			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 988			this.selectedMessage = this.messageList.get(acmi.position);
 989			populateContextMenu(menu);
 990		}
 991	}
 992
 993	private void populateContextMenu(ContextMenu menu) {
 994		final Message m = this.selectedMessage;
 995		final Transferable t = m.getTransferable();
 996		Message relevantForCorrection = m;
 997		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
 998			relevantForCorrection = relevantForCorrection.next();
 999		}
1000		if (m.getType() != Message.TYPE_STATUS) {
1001
1002			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
1003					&& m.getType() != Message.TYPE_PRIVATE
1004					&& !(t instanceof TransferablePlaceholder);
1005			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1006					|| m.getEncryption() == Message.ENCRYPTION_PGP;
1007			final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1008			activity.getMenuInflater().inflate(R.menu.message_context, menu);
1009			menu.setHeaderTitle(R.string.message_options);
1010			MenuItem copyMessage = menu.findItem(R.id.copy_message);
1011			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1012			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1013			MenuItem correctMessage = menu.findItem(R.id.correct_message);
1014			MenuItem shareWith = menu.findItem(R.id.share_with);
1015			MenuItem sendAgain = menu.findItem(R.id.send_again);
1016			MenuItem copyUrl = menu.findItem(R.id.copy_url);
1017			MenuItem downloadFile = menu.findItem(R.id.download_file);
1018			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1019			MenuItem deleteFile = menu.findItem(R.id.delete_file);
1020			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1021			if (!treatAsFile && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1022				copyMessage.setVisible(true);
1023				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
1024			}
1025			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1026				retryDecryption.setVisible(true);
1027			}
1028			if (relevantForCorrection.getType() == Message.TYPE_TEXT
1029					&& relevantForCorrection.isLastCorrectableMessage()
1030					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1031				correctMessage.setVisible(true);
1032			}
1033			if ((treatAsFile && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1034				shareWith.setVisible(true);
1035			}
1036			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1037				sendAgain.setVisible(true);
1038			}
1039			if (m.hasFileOnRemoteHost()
1040					|| m.isGeoUri()
1041					|| m.treatAsDownloadable()
1042					|| (t != null && t instanceof HttpDownloadConnection)) {
1043				copyUrl.setVisible(true);
1044			}
1045			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
1046				downloadFile.setVisible(true);
1047				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1048			}
1049			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1050					|| m.getStatus() == Message.STATUS_UNSEND
1051					|| m.getStatus() == Message.STATUS_OFFERED;
1052			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
1053				cancelTransmission.setVisible(true);
1054			}
1055			if (treatAsFile) {
1056				String path = m.getRelativeFilePath();
1057				if (path == null || !path.startsWith("/")) {
1058					deleteFile.setVisible(true);
1059					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1060				}
1061			}
1062			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1063				showErrorMessage.setVisible(true);
1064			}
1065		}
1066	}
1067
1068	@Override
1069	public boolean onContextItemSelected(MenuItem item) {
1070		switch (item.getItemId()) {
1071			case R.id.share_with:
1072				shareWith(selectedMessage);
1073				return true;
1074			case R.id.correct_message:
1075				correctMessage(selectedMessage);
1076				return true;
1077			case R.id.copy_message:
1078				copyMessage(selectedMessage);
1079				return true;
1080			case R.id.quote_message:
1081				quoteMessage(selectedMessage);
1082				return true;
1083			case R.id.send_again:
1084				resendMessage(selectedMessage);
1085				return true;
1086			case R.id.copy_url:
1087				copyUrl(selectedMessage);
1088				return true;
1089			case R.id.download_file:
1090				startDownloadable(selectedMessage);
1091				return true;
1092			case R.id.cancel_transmission:
1093				cancelTransmission(selectedMessage);
1094				return true;
1095			case R.id.retry_decryption:
1096				retryDecryption(selectedMessage);
1097				return true;
1098			case R.id.delete_file:
1099				deleteFile(selectedMessage);
1100				return true;
1101			case R.id.show_error_message:
1102				showErrorMessage(selectedMessage);
1103				return true;
1104			default:
1105				return super.onContextItemSelected(item);
1106		}
1107	}
1108
1109	@Override
1110	public boolean onOptionsItemSelected(final MenuItem item) {
1111		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1112			return false;
1113		} else if (conversation == null) {
1114			return super.onOptionsItemSelected(item);
1115		}
1116		switch (item.getItemId()) {
1117			case R.id.encryption_choice_axolotl:
1118			case R.id.encryption_choice_pgp:
1119			case R.id.encryption_choice_none:
1120				handleEncryptionSelection(item);
1121				break;
1122			case R.id.attach_choose_picture:
1123			case R.id.attach_take_picture:
1124			case R.id.attach_record_video:
1125			case R.id.attach_choose_file:
1126			case R.id.attach_record_voice:
1127			case R.id.attach_location:
1128				handleAttachmentSelection(item);
1129				break;
1130			case R.id.action_archive:
1131				activity.xmppConnectionService.archiveConversation(conversation);
1132				break;
1133			case R.id.action_contact_details:
1134				activity.switchToContactDetails(conversation.getContact());
1135				break;
1136			case R.id.action_muc_details:
1137				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1138				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1139				intent.putExtra("uuid", conversation.getUuid());
1140				startActivity(intent);
1141				break;
1142			case R.id.action_invite:
1143				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1144				break;
1145			case R.id.action_clear_history:
1146				clearHistoryDialog(conversation);
1147				break;
1148			case R.id.action_mute:
1149				muteConversationDialog(conversation);
1150				break;
1151			case R.id.action_unmute:
1152				unmuteConversation(conversation);
1153				break;
1154			case R.id.action_block:
1155			case R.id.action_unblock:
1156				final Activity activity = getActivity();
1157				if (activity instanceof XmppActivity) {
1158					BlockContactDialog.show((XmppActivity) activity, conversation);
1159				}
1160				break;
1161			default:
1162				break;
1163		}
1164		return super.onOptionsItemSelected(item);
1165	}
1166
1167	private void handleAttachmentSelection(MenuItem item) {
1168		switch (item.getItemId()) {
1169			case R.id.attach_choose_picture:
1170				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1171				break;
1172			case R.id.attach_take_picture:
1173				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1174				break;
1175			case R.id.attach_record_video:
1176				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1177				break;
1178			case R.id.attach_choose_file:
1179				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1180				break;
1181			case R.id.attach_record_voice:
1182				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1183				break;
1184			case R.id.attach_location:
1185				attachFile(ATTACHMENT_CHOICE_LOCATION);
1186				break;
1187		}
1188	}
1189
1190	private void handleEncryptionSelection(MenuItem item) {
1191		if (conversation == null) {
1192			return;
1193		}
1194		switch (item.getItemId()) {
1195			case R.id.encryption_choice_none:
1196				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1197				item.setChecked(true);
1198				break;
1199			case R.id.encryption_choice_pgp:
1200				if (activity.hasPgp()) {
1201					if (conversation.getAccount().getPgpSignature() != null) {
1202						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1203						item.setChecked(true);
1204					} else {
1205						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1206					}
1207				} else {
1208					activity.showInstallPgpDialog();
1209				}
1210				break;
1211			case R.id.encryption_choice_axolotl:
1212				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1213						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1214				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1215				item.setChecked(true);
1216				break;
1217			default:
1218				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1219				break;
1220		}
1221		activity.xmppConnectionService.updateConversation(conversation);
1222		updateChatMsgHint();
1223		getActivity().invalidateOptionsMenu();
1224		activity.refreshUi();
1225	}
1226
1227	public void attachFile(final int attachmentChoice) {
1228		if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1229			if (!hasStorageAndCameraPermission(attachmentChoice)) {
1230				return;
1231			}
1232		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1233			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1234				return;
1235			}
1236		}
1237		try {
1238			activity.getPreferences().edit()
1239					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1240					.apply();
1241		} catch (IllegalArgumentException e) {
1242			//just do not save
1243		}
1244		final int encryption = conversation.getNextEncryption();
1245		final int mode = conversation.getMode();
1246		if (encryption == Message.ENCRYPTION_PGP) {
1247			if (activity.hasPgp()) {
1248				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1249					activity.xmppConnectionService.getPgpEngine().hasKey(
1250							conversation.getContact(),
1251							new UiCallback<Contact>() {
1252
1253								@Override
1254								public void userInputRequried(PendingIntent pi, Contact contact) {
1255									startPendingIntent(pi, attachmentChoice);
1256								}
1257
1258								@Override
1259								public void success(Contact contact) {
1260									selectPresenceToAttachFile(attachmentChoice);
1261								}
1262
1263								@Override
1264								public void error(int error, Contact contact) {
1265									activity.replaceToast(getString(error));
1266								}
1267							});
1268				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1269					if (!conversation.getMucOptions().everybodyHasKeys()) {
1270						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1271						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1272						warning.show();
1273					}
1274					selectPresenceToAttachFile(attachmentChoice);
1275				} else {
1276					showNoPGPKeyDialog(false, (dialog, which) -> {
1277						conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1278						activity.xmppConnectionService.updateConversation(conversation);
1279						selectPresenceToAttachFile(attachmentChoice);
1280					});
1281				}
1282			} else {
1283				activity.showInstallPgpDialog();
1284			}
1285		} else {
1286			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1287				selectPresenceToAttachFile(attachmentChoice);
1288			}
1289		}
1290	}
1291
1292	@Override
1293	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1294		if (grantResults.length > 0)
1295			if (allGranted(grantResults)) {
1296				if (requestCode == REQUEST_START_DOWNLOAD) {
1297					if (this.mPendingDownloadableMessage != null) {
1298						startDownloadable(this.mPendingDownloadableMessage);
1299					}
1300				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1301					if (this.mPendingEditorContent != null) {
1302						attachImageToConversation(this.mPendingEditorContent);
1303					}
1304				} else {
1305					attachFile(requestCode);
1306				}
1307			} else {
1308				@StringRes int res;
1309				if (Manifest.permission.CAMERA.equals(getFirstDenied(grantResults, permissions))) {
1310					res = R.string.no_camera_permission;
1311				} else {
1312					res = R.string.no_storage_permission;
1313				}
1314				Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1315			}
1316	}
1317
1318	public void startDownloadable(Message message) {
1319		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1320			this.mPendingDownloadableMessage = message;
1321			return;
1322		}
1323		Transferable transferable = message.getTransferable();
1324		if (transferable != null) {
1325			if (transferable instanceof TransferablePlaceholder && message.treatAsDownloadable()) {
1326				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1327				return;
1328			}
1329			if (!transferable.start()) {
1330				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1331			}
1332		} else if (message.treatAsDownloadable()) {
1333			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1334		}
1335	}
1336
1337	@SuppressLint("InflateParams")
1338	protected void clearHistoryDialog(final Conversation conversation) {
1339		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1340		builder.setTitle(getString(R.string.clear_conversation_history));
1341		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1342		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1343		builder.setView(dialogView);
1344		builder.setNegativeButton(getString(R.string.cancel), null);
1345		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1346			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1347			if (endConversationCheckBox.isChecked()) {
1348				this.activity.xmppConnectionService.archiveConversation(conversation);
1349				this.activity.onConversationArchived(conversation);
1350			} else {
1351				activity.onConversationsListItemUpdated();
1352				refresh();
1353			}
1354		});
1355		builder.create().show();
1356	}
1357
1358	protected void muteConversationDialog(final Conversation conversation) {
1359		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1360		builder.setTitle(R.string.disable_notifications);
1361		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1362		final CharSequence[] labels = new CharSequence[durations.length];
1363		for (int i = 0; i < durations.length; ++i) {
1364			if (durations[i] == -1) {
1365				labels[i] = getString(R.string.until_further_notice);
1366			} else {
1367				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1368			}
1369		}
1370		builder.setItems(labels, (dialog, which) -> {
1371			final long till;
1372			if (durations[which] == -1) {
1373				till = Long.MAX_VALUE;
1374			} else {
1375				till = System.currentTimeMillis() + (durations[which] * 1000);
1376			}
1377			conversation.setMutedTill(till);
1378			activity.xmppConnectionService.updateConversation(conversation);
1379			activity.onConversationsListItemUpdated();
1380			refresh();
1381			getActivity().invalidateOptionsMenu();
1382		});
1383		builder.create().show();
1384	}
1385
1386	private boolean hasStoragePermission(int requestCode) {
1387		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1388			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1389				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1390				return false;
1391			} else {
1392				return true;
1393			}
1394		} else {
1395			return true;
1396		}
1397	}
1398
1399	private boolean hasStorageAndCameraPermission(int requestCode) {
1400		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1401			List<String> missingPermissions = new ArrayList<>();
1402			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1403				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1404			}
1405			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1406				missingPermissions.add(Manifest.permission.CAMERA);
1407			}
1408			if (missingPermissions.size() == 0) {
1409				return true;
1410			} else {
1411				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1412				return false;
1413			}
1414		} else {
1415			return true;
1416		}
1417	}
1418
1419	public void unmuteConversation(final Conversation conversation) {
1420		conversation.setMutedTill(0);
1421		this.activity.xmppConnectionService.updateConversation(conversation);
1422		this.activity.onConversationsListItemUpdated();
1423		refresh();
1424		getActivity().invalidateOptionsMenu();
1425	}
1426
1427	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1428		final Account account = conversation.getAccount();
1429		final PresenceSelector.OnPresenceSelected callback = () -> {
1430			Intent intent = new Intent();
1431			boolean chooser = false;
1432			String fallbackPackageId = null;
1433			switch (attachmentChoice) {
1434				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1435					intent.setAction(Intent.ACTION_GET_CONTENT);
1436					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1437					intent.setType("image/*");
1438					chooser = true;
1439					break;
1440				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1441					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1442					break;
1443				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1444					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1445					pendingTakePhotoUri.push(uri);
1446					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1447					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1448					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1449					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1450					break;
1451				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1452					chooser = true;
1453					intent.setType("*/*");
1454					intent.addCategory(Intent.CATEGORY_OPENABLE);
1455					intent.setAction(Intent.ACTION_GET_CONTENT);
1456					break;
1457				case ATTACHMENT_CHOICE_RECORD_VOICE:
1458					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1459					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1460					break;
1461				case ATTACHMENT_CHOICE_LOCATION:
1462					intent.setAction("eu.siacs.conversations.location.request");
1463					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1464					break;
1465			}
1466			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1467				if (chooser) {
1468					startActivityForResult(
1469							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1470							attachmentChoice);
1471				} else {
1472					startActivityForResult(intent, attachmentChoice);
1473				}
1474			} else if (fallbackPackageId != null) {
1475				startActivity(getInstallApkIntent(fallbackPackageId));
1476			}
1477		};
1478		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1479			conversation.setNextCounterpart(null);
1480			callback.onPresenceSelected();
1481		} else {
1482			activity.selectPresence(conversation, callback);
1483		}
1484	}
1485
1486	private Intent getInstallApkIntent(final String packageId) {
1487		Intent intent = new Intent(Intent.ACTION_VIEW);
1488		intent.setData(Uri.parse("market://details?id=" + packageId));
1489		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1490			return intent;
1491		} else {
1492			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1493			return intent;
1494		}
1495	}
1496
1497	@Override
1498	public void onResume() {
1499		new Handler().post(() -> {
1500			final Activity activity = getActivity();
1501			if (activity == null) {
1502				return;
1503			}
1504			final PackageManager packageManager = activity.getPackageManager();
1505			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1506			getActivity().invalidateOptionsMenu();
1507		});
1508		super.onResume();
1509		if (activity != null && this.conversation != null) {
1510			activity.onConversationRead(this.conversation);
1511		}
1512	}
1513
1514	private void showErrorMessage(final Message message) {
1515		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1516		builder.setTitle(R.string.error_message);
1517		builder.setMessage(message.getErrorMessage());
1518		builder.setPositiveButton(R.string.confirm, null);
1519		builder.create().show();
1520	}
1521
1522	private void shareWith(Message message) {
1523		Intent shareIntent = new Intent();
1524		shareIntent.setAction(Intent.ACTION_SEND);
1525		if (message.isGeoUri()) {
1526			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1527			shareIntent.setType("text/plain");
1528		} else if (!message.isFileOrImage()) {
1529			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1530			shareIntent.setType("text/plain");
1531		} else {
1532			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1533			try {
1534				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1535			} catch (SecurityException e) {
1536				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1537				return;
1538			}
1539			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1540			String mime = message.getMimeType();
1541			if (mime == null) {
1542				mime = "*/*";
1543			}
1544			shareIntent.setType(mime);
1545		}
1546		try {
1547			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1548		} catch (ActivityNotFoundException e) {
1549			//This should happen only on faulty androids because normally chooser is always available
1550			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1551		}
1552	}
1553
1554	private void copyMessage(Message message) {
1555		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1556			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1557		}
1558	}
1559
1560	private void deleteFile(Message message) {
1561		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1562			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1563			activity.onConversationsListItemUpdated();
1564			refresh();
1565		}
1566	}
1567
1568	private void resendMessage(final Message message) {
1569		if (message.isFileOrImage()) {
1570			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1571			if (file.exists()) {
1572				final Conversation conversation = message.getConversation();
1573				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1574				if (!message.hasFileOnRemoteHost()
1575						&& xmppConnection != null
1576						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1577					activity.selectPresence(conversation, () -> {
1578						message.setCounterpart(conversation.getNextCounterpart());
1579						activity.xmppConnectionService.resendFailedMessages(message);
1580						new Handler().post(() -> {
1581							int size = messageList.size();
1582							this.binding.messagesView.setSelection(size - 1);
1583						});
1584					});
1585					return;
1586				}
1587			} else {
1588				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1589				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1590				activity.onConversationsListItemUpdated();
1591				refresh();
1592				return;
1593			}
1594		}
1595		activity.xmppConnectionService.resendFailedMessages(message);
1596		new Handler().post(() -> {
1597			int size = messageList.size();
1598			this.binding.messagesView.setSelection(size - 1);
1599		});
1600	}
1601
1602	private void copyUrl(Message message) {
1603		final String url;
1604		final int resId;
1605		if (message.isGeoUri()) {
1606			resId = R.string.location;
1607			url = message.getBody();
1608		} else if (message.hasFileOnRemoteHost()) {
1609			resId = R.string.file_url;
1610			url = message.getFileParams().url.toString();
1611		} else {
1612			url = message.getBody().trim();
1613			resId = R.string.file_url;
1614		}
1615		if (activity.copyTextToClipboard(url, resId)) {
1616			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1617		}
1618	}
1619
1620	private void cancelTransmission(Message message) {
1621		Transferable transferable = message.getTransferable();
1622		if (transferable != null) {
1623			transferable.cancel();
1624		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1625			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1626		}
1627	}
1628
1629	private void retryDecryption(Message message) {
1630		message.setEncryption(Message.ENCRYPTION_PGP);
1631		activity.onConversationsListItemUpdated();
1632		refresh();
1633		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1634	}
1635
1636	private void privateMessageWith(final Jid counterpart) {
1637		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1638			activity.xmppConnectionService.sendChatState(conversation);
1639		}
1640		this.binding.textinput.setText("");
1641		this.conversation.setNextCounterpart(counterpart);
1642		updateChatMsgHint();
1643		updateSendButton();
1644		updateEditablity();
1645	}
1646
1647	private void correctMessage(Message message) {
1648		while (message.mergeable(message.next())) {
1649			message = message.next();
1650		}
1651		this.conversation.setCorrectingMessage(message);
1652		final Editable editable = binding.textinput.getText();
1653		this.conversation.setDraftMessage(editable.toString());
1654		this.binding.textinput.setText("");
1655		this.binding.textinput.append(message.getBody());
1656
1657	}
1658
1659	private void highlightInConference(String nick) {
1660		final Editable editable = this.binding.textinput.getText();
1661		String oldString = editable.toString().trim();
1662		final int pos = this.binding.textinput.getSelectionStart();
1663		if (oldString.isEmpty() || pos == 0) {
1664			editable.insert(0, nick + ": ");
1665		} else {
1666			final char before = editable.charAt(pos - 1);
1667			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1668			if (before == '\n') {
1669				editable.insert(pos, nick + ": ");
1670			} else {
1671				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1672					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1673						editable.insert(pos - 2, ", " + nick);
1674						return;
1675					}
1676				}
1677				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1678				if (Character.isWhitespace(after)) {
1679					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1680				}
1681			}
1682		}
1683	}
1684
1685	@Override
1686	public void onSaveInstanceState(Bundle outState) {
1687		super.onSaveInstanceState(outState);
1688		if (conversation != null) {
1689			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1690			final Uri uri = pendingTakePhotoUri.peek();
1691			if (uri != null) {
1692				outState.putString(STATE_PHOTO_URI, uri.toString());
1693			}
1694			final ScrollState scrollState = getScrollPosition();
1695			if (scrollState != null) {
1696				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1697			}
1698		}
1699	}
1700
1701	@Override
1702	public void onActivityCreated(Bundle savedInstanceState) {
1703		super.onActivityCreated(savedInstanceState);
1704		if (savedInstanceState == null) {
1705			return;
1706		}
1707		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1708		if (uuid != null) {
1709			this.pendingConversationsUuid.push(uuid);
1710			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1711			if (takePhotoUri != null) {
1712				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1713			}
1714			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1715		}
1716	}
1717
1718	@Override
1719	public void onStart() {
1720		super.onStart();
1721		if (this.reInitRequiredOnStart) {
1722			final Bundle extras = pendingExtras.pop();
1723			reInit(conversation, extras != null);
1724			if (extras != null) {
1725				processExtras(extras);
1726			}
1727		} else {
1728			Log.d(Config.LOGTAG, "skipped reinit on start");
1729		}
1730	}
1731
1732	@Override
1733	public void onStop() {
1734		super.onStop();
1735		final Activity activity = getActivity();
1736		if (activity == null || !activity.isChangingConfigurations()) {
1737			hideSoftKeyboard(activity);
1738			messageListAdapter.stopAudioPlayer();
1739		}
1740		if (this.conversation != null) {
1741			final String msg = this.binding.textinput.getText().toString();
1742			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1743				this.activity.xmppConnectionService.updateConversation(this.conversation);
1744			}
1745			updateChatState(this.conversation, msg);
1746			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1747		}
1748		this.reInitRequiredOnStart = true;
1749	}
1750
1751	private void updateChatState(final Conversation conversation, final String msg) {
1752		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1753		Account.State status = conversation.getAccount().getStatus();
1754		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1755			activity.xmppConnectionService.sendChatState(conversation);
1756		}
1757	}
1758
1759	private void saveMessageDraftStopAudioPlayer() {
1760		final Conversation previousConversation = this.conversation;
1761		if (this.activity == null || this.binding == null || previousConversation == null) {
1762			return;
1763		}
1764		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1765		final String msg = this.binding.textinput.getText().toString();
1766		if (previousConversation.setNextMessage(msg)) {
1767			activity.xmppConnectionService.updateConversation(previousConversation);
1768		}
1769		updateChatState(this.conversation, msg);
1770		messageListAdapter.stopAudioPlayer();
1771	}
1772
1773	public void reInit(Conversation conversation, Bundle extras) {
1774		this.saveMessageDraftStopAudioPlayer();
1775		if (this.reInit(conversation, extras != null)) {
1776			if (extras != null) {
1777				processExtras(extras);
1778			}
1779			this.reInitRequiredOnStart = false;
1780		} else {
1781			this.reInitRequiredOnStart = true;
1782			pendingExtras.push(extras);
1783		}
1784	}
1785
1786	private void reInit(Conversation conversation) {
1787		reInit(conversation, false);
1788	}
1789
1790	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1791		if (conversation == null) {
1792			return false;
1793		}
1794		this.conversation = conversation;
1795		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1796		if (this.activity == null || this.binding == null) {
1797			return false;
1798		}
1799
1800		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1801			activity.onConversationArchived(this.conversation);
1802			return false;
1803		}
1804
1805		stopScrolling();
1806		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1807
1808		if (this.conversation.isRead() && hasExtras) {
1809			Log.d(Config.LOGTAG, "trimming conversation");
1810			this.conversation.trim();
1811		}
1812
1813		setupIme();
1814
1815		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1816
1817		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1818		this.binding.textinput.setKeyboardListener(null);
1819		this.binding.textinput.setText("");
1820		this.binding.textinput.append(this.conversation.getNextMessage());
1821		this.binding.textinput.setKeyboardListener(this);
1822		messageListAdapter.updatePreferences();
1823		refresh(false);
1824		this.conversation.messagesLoaded.set(true);
1825
1826		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1827
1828		if (hasExtras || scrolledToBottomAndNoPending) {
1829			synchronized (this.messageList) {
1830				Log.d(Config.LOGTAG, "jump to first unread message");
1831				final Message first = conversation.getFirstUnreadMessage();
1832				final int bottom = Math.max(0, this.messageList.size() - 1);
1833				final int pos;
1834				if (first == null) {
1835					pos = bottom;
1836				} else {
1837					int i = getIndexOf(first.getUuid(), this.messageList);
1838					pos = i < 0 ? bottom : i;
1839				}
1840				setSelection(pos);
1841			}
1842		}
1843
1844		activity.onConversationRead(this.conversation);
1845		//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
1846		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1847		return true;
1848	}
1849
1850	private void setSelection(int pos) {
1851		this.binding.messagesView.setSelection(pos);
1852		this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
1853	}
1854
1855	private boolean scrolledToBottom() {
1856		if (this.binding == null) {
1857			return false;
1858		}
1859		final ListView listView = this.binding.messagesView;
1860		if (listView.getLastVisiblePosition() == listView.getAdapter().getCount() - 1) {
1861			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
1862			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
1863		} else {
1864			return false;
1865		}
1866	}
1867
1868	private void processExtras(Bundle extras) {
1869		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1870		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1871		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1872		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1873		if (nick != null) {
1874			if (pm) {
1875				Jid jid = conversation.getJid();
1876				try {
1877					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1878					privateMessageWith(next);
1879				} catch (final IllegalArgumentException ignored) {
1880					//do nothing
1881				}
1882			} else {
1883				final MucOptions mucOptions = conversation.getMucOptions();
1884				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
1885					highlightInConference(nick);
1886				}
1887			}
1888		} else {
1889			appendText(text);
1890		}
1891		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1892		if (message != null) {
1893			startDownloadable(message);
1894		}
1895	}
1896
1897	private boolean showBlockSubmenu(View view) {
1898		final Jid jid = conversation.getJid();
1899		if (jid.getLocal() == null) {
1900			BlockContactDialog.show(activity, conversation);
1901		} else {
1902			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1903			popupMenu.inflate(R.menu.block);
1904			popupMenu.setOnMenuItemClickListener(menuItem -> {
1905				Blockable blockable;
1906				switch (menuItem.getItemId()) {
1907					case R.id.block_domain:
1908						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
1909						break;
1910					default:
1911						blockable = conversation;
1912				}
1913				BlockContactDialog.show(activity, blockable);
1914				return true;
1915			});
1916			popupMenu.show();
1917		}
1918		return true;
1919	}
1920
1921	private void updateSnackBar(final Conversation conversation) {
1922		final Account account = conversation.getAccount();
1923		final XmppConnection connection = account.getXmppConnection();
1924		final int mode = conversation.getMode();
1925		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1926		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
1927			return;
1928		}
1929		if (account.getStatus() == Account.State.DISABLED) {
1930			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1931		} else if (conversation.isBlocked()) {
1932			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1933		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1934			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1935		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1936			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1937		} else if (mode == Conversation.MODE_MULTI
1938				&& !conversation.getMucOptions().online()
1939				&& account.getStatus() == Account.State.ONLINE) {
1940			switch (conversation.getMucOptions().getError()) {
1941				case NICK_IN_USE:
1942					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1943					break;
1944				case NO_RESPONSE:
1945					showSnackbar(R.string.joining_conference, 0, null);
1946					break;
1947				case SERVER_NOT_FOUND:
1948					if (conversation.receivedMessagesCount() > 0) {
1949						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
1950					} else {
1951						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1952					}
1953					break;
1954				case PASSWORD_REQUIRED:
1955					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1956					break;
1957				case BANNED:
1958					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1959					break;
1960				case MEMBERS_ONLY:
1961					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1962					break;
1963				case KICKED:
1964					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1965					break;
1966				case UNKNOWN:
1967					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
1968					break;
1969				case INVALID_NICK:
1970					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
1971				case SHUTDOWN:
1972					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
1973					break;
1974				default:
1975					hideSnackbar();
1976					break;
1977			}
1978		} else if (account.hasPendingPgpIntent(conversation)) {
1979			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1980		} else if (connection != null
1981				&& connection.getFeatures().blocking()
1982				&& conversation.countMessages() != 0
1983				&& !conversation.isBlocked()
1984				&& conversation.isWithStranger()) {
1985			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
1986		} else {
1987			hideSnackbar();
1988		}
1989	}
1990
1991	@Override
1992	public void refresh() {
1993		if (this.binding == null) {
1994			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
1995			return;
1996		}
1997		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
1998			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1999				activity.onConversationArchived(this.conversation);
2000				return;
2001			}
2002		}
2003		this.refresh(true);
2004	}
2005
2006	private void refresh(boolean notifyConversationRead) {
2007		synchronized (this.messageList) {
2008			if (this.conversation != null) {
2009				conversation.populateWithMessages(this.messageList);
2010				updateSnackBar(conversation);
2011				updateStatusMessages();
2012				this.messageListAdapter.notifyDataSetChanged();
2013				updateChatMsgHint();
2014				if (notifyConversationRead && activity != null) {
2015					activity.onConversationRead(this.conversation);
2016				}
2017				updateSendButton();
2018				updateEditablity();
2019			}
2020		}
2021	}
2022
2023	protected void messageSent() {
2024		mSendingPgpMessage.set(false);
2025		this.binding.textinput.setText("");
2026		if (conversation.setCorrectingMessage(null)) {
2027			this.binding.textinput.append(conversation.getDraftMessage());
2028			conversation.setDraftMessage(null);
2029		}
2030		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2031			activity.xmppConnectionService.updateConversation(conversation);
2032		}
2033		updateChatMsgHint();
2034		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2035		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2036		if (prefScrollToBottom || scrolledToBottom()) {
2037			new Handler().post(() -> {
2038				int size = messageList.size();
2039				this.binding.messagesView.setSelection(size - 1);
2040			});
2041		}
2042	}
2043
2044	public void doneSendingPgpMessage() {
2045		mSendingPgpMessage.set(false);
2046	}
2047
2048	public long getMaxHttpUploadSize(Conversation conversation) {
2049		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2050		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2051	}
2052
2053	private void updateEditablity() {
2054		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2055		this.binding.textinput.setFocusable(canWrite);
2056		this.binding.textinput.setFocusableInTouchMode(canWrite);
2057		this.binding.textSendButton.setEnabled(canWrite);
2058		this.binding.textinput.setCursorVisible(canWrite);
2059	}
2060
2061	public void updateSendButton() {
2062		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2063		final Conversation c = this.conversation;
2064		final Presence.Status status;
2065		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2066		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2067		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2068			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2069				status = Presence.Status.OFFLINE;
2070			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2071				status = c.getContact().getShownStatus();
2072			} else {
2073				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2074			}
2075		} else {
2076			status = Presence.Status.OFFLINE;
2077		}
2078		this.binding.textSendButton.setTag(action);
2079		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2080	}
2081
2082	protected void updateDateSeparators() {
2083		synchronized (this.messageList) {
2084			for (int i = 0; i < this.messageList.size(); ++i) {
2085				final Message current = this.messageList.get(i);
2086				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2087					this.messageList.add(i, Message.createDateSeparator(current));
2088					i++;
2089				}
2090			}
2091		}
2092	}
2093
2094	protected void updateStatusMessages() {
2095		updateDateSeparators();
2096		synchronized (this.messageList) {
2097			if (showLoadMoreMessages(conversation)) {
2098				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2099			}
2100			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2101				ChatState state = conversation.getIncomingChatState();
2102				if (state == ChatState.COMPOSING) {
2103					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2104				} else if (state == ChatState.PAUSED) {
2105					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2106				} else {
2107					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2108						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2109							return;
2110						} else {
2111							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2112								this.messageList.add(i + 1,
2113										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2114								return;
2115							}
2116						}
2117					}
2118				}
2119			} else {
2120				final MucOptions mucOptions = conversation.getMucOptions();
2121				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2122				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2123				ChatState state = ChatState.COMPOSING;
2124				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2125				if (users.size() == 0) {
2126					state = ChatState.PAUSED;
2127					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2128				}
2129				if (mucOptions.isPrivateAndNonAnonymous()) {
2130					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2131						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2132						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2133						for (ReadByMarker marker : markersForMessage) {
2134							if (!ReadByMarker.contains(marker, addedMarkers)) {
2135								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2136								MucOptions.User user = mucOptions.findUser(marker);
2137								if (user != null && !users.contains(user)) {
2138									shownMarkers.add(user);
2139								}
2140							}
2141						}
2142						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2143						final Message statusMessage;
2144						final int size = shownMarkers.size();
2145						if (size > 1) {
2146							final String body;
2147							if (size <= 4) {
2148								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2149							} else {
2150								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2151							}
2152							statusMessage = Message.createStatusMessage(conversation, body);
2153							statusMessage.setCounterparts(shownMarkers);
2154						} else if (size == 1) {
2155							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2156							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2157							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2158						} else {
2159							statusMessage = null;
2160						}
2161						if (statusMessage != null) {
2162							this.messageList.add(i + 1, statusMessage);
2163						}
2164						addedMarkers.add(markerForSender);
2165						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2166							break;
2167						}
2168					}
2169				}
2170				if (users.size() > 0) {
2171					Message statusMessage;
2172					if (users.size() == 1) {
2173						MucOptions.User user = users.get(0);
2174						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2175						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2176						statusMessage.setTrueCounterpart(user.getRealJid());
2177						statusMessage.setCounterpart(user.getFullJid());
2178					} else {
2179						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2180						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2181						statusMessage.setCounterparts(users);
2182					}
2183					this.messageList.add(statusMessage);
2184				}
2185
2186			}
2187		}
2188	}
2189
2190	private void stopScrolling() {
2191		long now = SystemClock.uptimeMillis();
2192		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2193		binding.messagesView.dispatchTouchEvent(cancel);
2194	}
2195
2196	private boolean showLoadMoreMessages(final Conversation c) {
2197		if (activity == null || activity.xmppConnectionService == null) {
2198			return false;
2199		}
2200		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2201		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2202		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2203	}
2204
2205	private boolean hasMamSupport(final Conversation c) {
2206		if (c.getMode() == Conversation.MODE_SINGLE) {
2207			final XmppConnection connection = c.getAccount().getXmppConnection();
2208			return connection != null && connection.getFeatures().mam();
2209		} else {
2210			return c.getMucOptions().mamSupport();
2211		}
2212	}
2213
2214	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2215		showSnackbar(message, action, clickListener, null);
2216	}
2217
2218	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2219		this.binding.snackbar.setVisibility(View.VISIBLE);
2220		this.binding.snackbar.setOnClickListener(null);
2221		this.binding.snackbarMessage.setText(message);
2222		this.binding.snackbarMessage.setOnClickListener(null);
2223		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2224		if (action != 0) {
2225			this.binding.snackbarAction.setText(action);
2226		}
2227		this.binding.snackbarAction.setOnClickListener(clickListener);
2228		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2229	}
2230
2231	protected void hideSnackbar() {
2232		this.binding.snackbar.setVisibility(View.GONE);
2233	}
2234
2235	protected void sendMessage(Message message) {
2236		activity.xmppConnectionService.sendMessage(message);
2237		messageSent();
2238	}
2239
2240	protected void sendPgpMessage(final Message message) {
2241		final XmppConnectionService xmppService = activity.xmppConnectionService;
2242		final Contact contact = message.getConversation().getContact();
2243		if (!activity.hasPgp()) {
2244			activity.showInstallPgpDialog();
2245			return;
2246		}
2247		if (conversation.getAccount().getPgpSignature() == null) {
2248			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2249			return;
2250		}
2251		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2252			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2253		}
2254		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2255			if (contact.getPgpKeyId() != 0) {
2256				xmppService.getPgpEngine().hasKey(contact,
2257						new UiCallback<Contact>() {
2258
2259							@Override
2260							public void userInputRequried(PendingIntent pi, Contact contact) {
2261								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2262							}
2263
2264							@Override
2265							public void success(Contact contact) {
2266								encryptTextMessage(message);
2267							}
2268
2269							@Override
2270							public void error(int error, Contact contact) {
2271								activity.runOnUiThread(() -> Toast.makeText(activity,
2272										R.string.unable_to_connect_to_keychain,
2273										Toast.LENGTH_SHORT
2274								).show());
2275								mSendingPgpMessage.set(false);
2276							}
2277						});
2278
2279			} else {
2280				showNoPGPKeyDialog(false, (dialog, which) -> {
2281					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2282					xmppService.updateConversation(conversation);
2283					message.setEncryption(Message.ENCRYPTION_NONE);
2284					xmppService.sendMessage(message);
2285					messageSent();
2286				});
2287			}
2288		} else {
2289			if (conversation.getMucOptions().pgpKeysInUse()) {
2290				if (!conversation.getMucOptions().everybodyHasKeys()) {
2291					Toast warning = Toast
2292							.makeText(getActivity(),
2293									R.string.missing_public_keys,
2294									Toast.LENGTH_LONG);
2295					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2296					warning.show();
2297				}
2298				encryptTextMessage(message);
2299			} else {
2300				showNoPGPKeyDialog(true, (dialog, which) -> {
2301					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2302					message.setEncryption(Message.ENCRYPTION_NONE);
2303					xmppService.updateConversation(conversation);
2304					xmppService.sendMessage(message);
2305					messageSent();
2306				});
2307			}
2308		}
2309	}
2310
2311	public void encryptTextMessage(Message message) {
2312		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2313				new UiCallback<Message>() {
2314
2315					@Override
2316					public void userInputRequried(PendingIntent pi, Message message) {
2317						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2318					}
2319
2320					@Override
2321					public void success(Message message) {
2322						//TODO the following two call can be made before the callback
2323						getActivity().runOnUiThread(() -> messageSent());
2324					}
2325
2326					@Override
2327					public void error(final int error, Message message) {
2328						getActivity().runOnUiThread(() -> {
2329							doneSendingPgpMessage();
2330							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2331						});
2332
2333					}
2334				});
2335	}
2336
2337	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2338		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2339		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2340		if (plural) {
2341			builder.setTitle(getString(R.string.no_pgp_keys));
2342			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2343		} else {
2344			builder.setTitle(getString(R.string.no_pgp_key));
2345			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2346		}
2347		builder.setNegativeButton(getString(R.string.cancel), null);
2348		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2349		builder.create().show();
2350	}
2351
2352	public void appendText(String text) {
2353		if (text == null) {
2354			return;
2355		}
2356		String previous = this.binding.textinput.getText().toString();
2357		if (previous.length() != 0 && !previous.endsWith(" ")) {
2358			text = " " + text;
2359		}
2360		this.binding.textinput.append(text);
2361	}
2362
2363	@Override
2364	public boolean onEnterPressed() {
2365		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2366		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2367		if (enterIsSend) {
2368			sendMessage();
2369			return true;
2370		} else {
2371			return false;
2372		}
2373	}
2374
2375	@Override
2376	public void onTypingStarted() {
2377		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2378		if (service == null) {
2379			return;
2380		}
2381		Account.State status = conversation.getAccount().getStatus();
2382		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2383			service.sendChatState(conversation);
2384		}
2385		updateSendButton();
2386	}
2387
2388	@Override
2389	public void onTypingStopped() {
2390		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2391		if (service == null) {
2392			return;
2393		}
2394		Account.State status = conversation.getAccount().getStatus();
2395		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2396			service.sendChatState(conversation);
2397		}
2398	}
2399
2400	@Override
2401	public void onTextDeleted() {
2402		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2403		if (service == null) {
2404			return;
2405		}
2406		Account.State status = conversation.getAccount().getStatus();
2407		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2408			service.sendChatState(conversation);
2409		}
2410		updateSendButton();
2411	}
2412
2413	@Override
2414	public void onTextChanged() {
2415		if (conversation != null && conversation.getCorrectingMessage() != null) {
2416			updateSendButton();
2417		}
2418	}
2419
2420	@Override
2421	public boolean onTabPressed(boolean repeated) {
2422		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2423			return false;
2424		}
2425		if (repeated) {
2426			completionIndex++;
2427		} else {
2428			lastCompletionLength = 0;
2429			completionIndex = 0;
2430			final String content = this.binding.textinput.getText().toString();
2431			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2432			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2433			firstWord = start == 0;
2434			incomplete = content.substring(start, lastCompletionCursor);
2435		}
2436		List<String> completions = new ArrayList<>();
2437		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2438			String name = user.getName();
2439			if (name != null && name.startsWith(incomplete)) {
2440				completions.add(name + (firstWord ? ": " : " "));
2441			}
2442		}
2443		Collections.sort(completions);
2444		if (completions.size() > completionIndex) {
2445			String completion = completions.get(completionIndex).substring(incomplete.length());
2446			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2447			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2448			lastCompletionLength = completion.length();
2449		} else {
2450			completionIndex = -1;
2451			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2452			lastCompletionLength = 0;
2453		}
2454		return true;
2455	}
2456
2457	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2458		try {
2459			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2460		} catch (final SendIntentException ignored) {
2461		}
2462	}
2463
2464	@Override
2465	public void onBackendConnected() {
2466		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2467		String uuid = pendingConversationsUuid.pop();
2468		if (uuid != null) {
2469			Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2470			if (conversation == null) {
2471				clearPending();
2472				activity.onConversationArchived(null);
2473				return;
2474			}
2475			reInit(conversation);
2476			ScrollState scrollState = pendingScrollState.pop();
2477			if (scrollState != null) {
2478				setScrollPosition(scrollState);
2479			}
2480		} else {
2481			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2482				clearPending();
2483				activity.onConversationArchived(conversation);
2484				return;
2485			}
2486		}
2487		ActivityResult activityResult = postponedActivityResult.pop();
2488		if (activityResult != null) {
2489			handleActivityResult(activityResult);
2490		}
2491		clearPending();
2492	}
2493
2494	private void clearPending() {
2495		if (postponedActivityResult.pop() != null) {
2496			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2497		}
2498		pendingScrollState.pop();
2499		if (pendingTakePhotoUri.pop() != null) {
2500			Log.e(Config.LOGTAG, "cleared pending photo uri");
2501		}
2502	}
2503
2504	public Conversation getConversation() {
2505		return conversation;
2506	}
2507}