1package eu.siacs.conversations.ui;
   2
   3import android.annotation.SuppressLint;
   4import android.app.Activity;
   5import android.content.SharedPreferences;
   6import android.content.pm.PackageManager;
   7import android.databinding.DataBindingUtil;
   8import android.net.Uri;
   9import android.os.Build;
  10import android.preference.Preference;
  11import android.preference.PreferenceManager;
  12import android.provider.MediaStore;
  13import android.support.v7.app.AlertDialog;
  14import android.app.Fragment;
  15import android.app.PendingIntent;
  16import android.content.ActivityNotFoundException;
  17import android.content.Context;
  18import android.content.DialogInterface;
  19import android.content.Intent;
  20import android.content.IntentSender.SendIntentException;
  21import android.os.Bundle;
  22import android.os.Handler;
  23import android.os.SystemClock;
  24import android.support.v13.view.inputmethod.InputConnectionCompat;
  25import android.support.v13.view.inputmethod.InputContentInfoCompat;
  26import android.text.Editable;
  27import android.text.InputType;
  28import android.util.Log;
  29import android.util.Pair;
  30import android.view.ContextMenu;
  31import android.view.ContextMenu.ContextMenuInfo;
  32import android.view.Gravity;
  33import android.view.LayoutInflater;
  34import android.view.Menu;
  35import android.view.MenuInflater;
  36import android.view.MenuItem;
  37import android.view.MotionEvent;
  38import android.view.View;
  39import android.view.View.OnClickListener;
  40import android.view.ViewGroup;
  41import android.view.inputmethod.EditorInfo;
  42import android.view.inputmethod.InputMethodManager;
  43import android.widget.AbsListView;
  44import android.widget.AbsListView.OnScrollListener;
  45import android.widget.AdapterView;
  46import android.widget.AdapterView.AdapterContextMenuInfo;
  47import android.widget.CheckBox;
  48import android.widget.ImageButton;
  49import android.widget.ListView;
  50import android.widget.PopupMenu;
  51import android.widget.RelativeLayout;
  52import android.widget.TextView;
  53import android.widget.TextView.OnEditorActionListener;
  54import android.widget.Toast;
  55
  56import org.openintents.openpgp.util.OpenPgpApi;
  57
  58import java.util.ArrayList;
  59import java.util.Arrays;
  60import java.util.Collections;
  61import java.util.HashSet;
  62import java.util.Iterator;
  63import java.util.List;
  64import java.util.Map;
  65import java.util.Set;
  66import java.util.UUID;
  67import java.util.concurrent.atomic.AtomicBoolean;
  68import java.util.concurrent.atomic.AtomicInteger;
  69
  70import eu.siacs.conversations.Config;
  71import eu.siacs.conversations.R;
  72import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  73import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  74import eu.siacs.conversations.databinding.FragmentConversationBinding;
  75import eu.siacs.conversations.entities.Account;
  76import eu.siacs.conversations.entities.Blockable;
  77import eu.siacs.conversations.entities.Contact;
  78import eu.siacs.conversations.entities.Conversation;
  79import eu.siacs.conversations.entities.DownloadableFile;
  80import eu.siacs.conversations.entities.Message;
  81import eu.siacs.conversations.entities.MucOptions;
  82import eu.siacs.conversations.entities.Presence;
  83import eu.siacs.conversations.entities.Presences;
  84import eu.siacs.conversations.entities.ReadByMarker;
  85import eu.siacs.conversations.entities.Transferable;
  86import eu.siacs.conversations.entities.TransferablePlaceholder;
  87import eu.siacs.conversations.http.HttpDownloadConnection;
  88import eu.siacs.conversations.persistance.FileBackend;
  89import eu.siacs.conversations.services.MessageArchiveService;
  90import eu.siacs.conversations.services.XmppConnectionService;
  91import eu.siacs.conversations.ui.adapter.MessageAdapter;
  92import eu.siacs.conversations.ui.util.ActivityResult;
  93import eu.siacs.conversations.ui.util.AttachmentTool;
  94import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  95import eu.siacs.conversations.ui.util.PresenceSelector;
  96import eu.siacs.conversations.ui.util.SendButtonAction;
  97import eu.siacs.conversations.ui.util.SendButtonTool;
  98import eu.siacs.conversations.ui.widget.EditMessage;
  99import eu.siacs.conversations.utils.MessageUtils;
 100import eu.siacs.conversations.utils.NickValidityChecker;
 101import eu.siacs.conversations.utils.StylingHelper;
 102import eu.siacs.conversations.utils.UIHelper;
 103import eu.siacs.conversations.xmpp.XmppConnection;
 104import eu.siacs.conversations.xmpp.chatstate.ChatState;
 105import eu.siacs.conversations.xmpp.jid.InvalidJidException;
 106import eu.siacs.conversations.xmpp.jid.Jid;
 107
 108import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 109import static eu.siacs.conversations.ui.XmppActivity.REQUEST_ANNOUNCE_PGP;
 110import static eu.siacs.conversations.ui.XmppActivity.REQUEST_CHOOSE_PGP_ID;
 111
 112
 113public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 114
 115
 116	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 117	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 118	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 119	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 120	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 121	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 122	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 123	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 124	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 125	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 126	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 127	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 128	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 129	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 130
 131	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 132
 133
 134	final protected List<Message> messageList = new ArrayList<>();
 135	protected Conversation conversation;
 136
 137	private FragmentConversationBinding binding;
 138
 139	protected MessageAdapter messageListAdapter;
 140	private Toast messageLoaderToast;
 141
 142	private ActivityResult postponedActivityResult = null;
 143	public Uri mPendingEditorContent = null;
 144
 145	private ConversationsMainActivity activity;
 146
 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.onConversationArchived(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							getActivity().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							getActivity().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
 262	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 263		@Override
 264		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 265			// try to get permission to read the image, if applicable
 266			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 267				try {
 268					inputContentInfo.requestPermission();
 269				} catch (Exception e) {
 270					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 271					Toast.makeText(getActivity(),activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 272					).show();
 273					return false;
 274				}
 275			}
 276			if (activity.hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 277				attachImageToConversation(inputContentInfo.getContentUri());
 278			} else {
 279				mPendingEditorContent = inputContentInfo.getContentUri();
 280			}
 281			return true;
 282		}
 283	};
 284	private Message selectedMessage;
 285	private OnClickListener mEnableAccountListener = new OnClickListener() {
 286		@Override
 287		public void onClick(View v) {
 288			final Account account = conversation == null ? null : conversation.getAccount();
 289			if (account != null) {
 290				account.setOption(Account.OPTION_DISABLED, false);
 291				activity.xmppConnectionService.updateAccount(account);
 292			}
 293		}
 294	};
 295	private OnClickListener mUnblockClickListener = new OnClickListener() {
 296		@Override
 297		public void onClick(final View v) {
 298			v.post(() -> v.setVisibility(View.INVISIBLE));
 299			if (conversation.isDomainBlocked()) {
 300				BlockContactDialog.show(activity, conversation);
 301			} else {
 302				unblockConversation(conversation);
 303			}
 304		}
 305	};
 306	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 307	private OnClickListener mAddBackClickListener = new OnClickListener() {
 308
 309		@Override
 310		public void onClick(View v) {
 311			final Contact contact = conversation == null ? null : conversation.getContact();
 312			if (contact != null) {
 313				activity.xmppConnectionService.createContact(contact);
 314				activity.switchToContactDetails(contact);
 315			}
 316		}
 317	};
 318	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 319	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 320		@Override
 321		public void onClick(View v) {
 322			final Contact contact = conversation == null ? null : conversation.getContact();
 323			if (contact != null) {
 324				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 325						activity.xmppConnectionService.getPresenceGenerator()
 326								.sendPresenceUpdatesTo(contact));
 327				hideSnackbar();
 328			}
 329		}
 330	};
 331
 332	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 333
 334		@Override
 335		public void onClick(View v) {
 336			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 337			if (pendingIntent != null) {
 338				try {
 339					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 340							REQUEST_DECRYPT_PGP,
 341							null,
 342							0,
 343							0,
 344							0);
 345				} catch (SendIntentException e) {
 346					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 347					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 348				}
 349			}
 350			updateSnackBar(conversation);
 351		}
 352	};
 353	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 354	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 355		if (actionId == EditorInfo.IME_ACTION_SEND) {
 356			InputMethodManager imm = (InputMethodManager) v.getContext()
 357					.getSystemService(Context.INPUT_METHOD_SERVICE);
 358			if (imm.isFullscreenMode()) {
 359				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 360			}
 361			sendMessage();
 362			return true;
 363		} else {
 364			return false;
 365		}
 366	};
 367	private OnClickListener mSendButtonListener = new OnClickListener() {
 368
 369		@Override
 370		public void onClick(View v) {
 371			Object tag = v.getTag();
 372			if (tag instanceof SendButtonAction) {
 373				SendButtonAction action = (SendButtonAction) tag;
 374				switch (action) {
 375					case TAKE_PHOTO:
 376					case RECORD_VIDEO:
 377					case SEND_LOCATION:
 378					case RECORD_VOICE:
 379					case CHOOSE_PICTURE:
 380						attachFile(action.toChoice());
 381						break;
 382					case CANCEL:
 383						if (conversation != null) {
 384							if (conversation.setCorrectingMessage(null)) {
 385								binding.textinput.setText("");
 386								binding.textinput.append(conversation.getDraftMessage());
 387								conversation.setDraftMessage(null);
 388							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 389								conversation.setNextCounterpart(null);
 390							}
 391							updateChatMsgHint();
 392							updateSendButton();
 393							updateEditablity();
 394						}
 395						break;
 396					default:
 397						sendMessage();
 398				}
 399			} else {
 400				sendMessage();
 401			}
 402		}
 403	};
 404	private int completionIndex = 0;
 405	private int lastCompletionLength = 0;
 406	private String incomplete;
 407	private int lastCompletionCursor;
 408	private boolean firstWord = false;
 409	private Message mPendingDownloadableMessage;
 410
 411	private int getIndexOf(String uuid, List<Message> messages) {
 412		if (uuid == null) {
 413			return messages.size() - 1;
 414		}
 415		for (int i = 0; i < messages.size(); ++i) {
 416			if (uuid.equals(messages.get(i).getUuid())) {
 417				return i;
 418			} else {
 419				Message next = messages.get(i);
 420				while (next != null && next.wasMergedIntoPrevious()) {
 421					if (uuid.equals(next.getUuid())) {
 422						return i;
 423					}
 424					next = next.next();
 425				}
 426
 427			}
 428		}
 429		return -1;
 430	}
 431
 432	public Pair<Integer, Integer> getScrollPosition() {
 433		if (this.binding.messagesView.getCount() == 0 ||
 434				this.binding.messagesView.getLastVisiblePosition() == this.binding.messagesView.getCount() - 1) {
 435			return null;
 436		} else {
 437			final int pos = this.binding.messagesView.getFirstVisiblePosition();
 438			final View view = this.binding.messagesView.getChildAt(0);
 439			if (view == null) {
 440				return null;
 441			} else {
 442				return new Pair<>(pos, view.getTop());
 443			}
 444		}
 445	}
 446
 447	public void setScrollPosition(Pair<Integer, Integer> scrollPosition) {
 448		if (scrollPosition != null) {
 449			this.binding.messagesView.setSelectionFromTop(scrollPosition.first, scrollPosition.second);
 450		}
 451	}
 452
 453
 454	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 455		if (conversation == null) {
 456			return;
 457		}
 458		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 459
 460			@Override
 461			public void success(Message message) {
 462				activity.xmppConnectionService.sendMessage(message);
 463			}
 464
 465			@Override
 466			public void error(int errorCode, Message object) {
 467
 468			}
 469
 470			@Override
 471			public void userInputRequried(PendingIntent pi, Message object) {
 472
 473			}
 474		});
 475	}
 476
 477	private void attachFileToConversation(Conversation conversation, Uri uri) {
 478		if (conversation == null) {
 479			return;
 480		}
 481		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 482		prepareFileToast.show();
 483		activity.delegateUriPermissionsToService(uri);
 484		activity.xmppConnectionService.attachFileToConversation(conversation, uri, new UiInformableCallback<Message>() {
 485			@Override
 486			public void inform(final String text) {
 487				hidePrepareFileToast(prepareFileToast);
 488				getActivity().runOnUiThread(() -> activity.replaceToast(text));
 489			}
 490
 491			@Override
 492			public void success(Message message) {
 493				getActivity().runOnUiThread(() -> activity.hideToast());
 494				hidePrepareFileToast(prepareFileToast);
 495				activity.xmppConnectionService.sendMessage(message);
 496			}
 497
 498			@Override
 499			public void error(final int errorCode, Message message) {
 500				hidePrepareFileToast(prepareFileToast);
 501				getActivity().runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 502
 503			}
 504
 505			@Override
 506			public void userInputRequried(PendingIntent pi, Message message) {
 507				hidePrepareFileToast(prepareFileToast);
 508			}
 509		});
 510	}
 511
 512	public void attachImageToConversation(Uri uri) {
 513		this.attachImageToConversation(conversation, uri);
 514	}
 515
 516	private void attachImageToConversation(Conversation conversation, Uri uri) {
 517		if (conversation == null) {
 518			return;
 519		}
 520		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 521		prepareFileToast.show();
 522		activity.delegateUriPermissionsToService(uri);
 523		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 524				new UiCallback<Message>() {
 525
 526					@Override
 527					public void userInputRequried(PendingIntent pi, Message object) {
 528						hidePrepareFileToast(prepareFileToast);
 529					}
 530
 531					@Override
 532					public void success(Message message) {
 533						hidePrepareFileToast(prepareFileToast);
 534						activity.xmppConnectionService.sendMessage(message);
 535					}
 536
 537					@Override
 538					public void error(final int error, Message message) {
 539						hidePrepareFileToast(prepareFileToast);
 540						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 541					}
 542				});
 543	}
 544
 545	private void hidePrepareFileToast(final Toast prepareFileToast) {
 546		if (prepareFileToast != null) {
 547			activity.runOnUiThread(prepareFileToast::cancel);
 548		}
 549	}
 550
 551	private void sendMessage() {
 552		final String body = this.binding.textinput.getText().toString();
 553		final Conversation conversation = this.conversation;
 554		if (body.length() == 0 || conversation == null) {
 555			return;
 556		}
 557		final Message message;
 558		if (conversation.getCorrectingMessage() == null) {
 559			message = new Message(conversation, body, conversation.getNextEncryption());
 560			if (conversation.getMode() == Conversation.MODE_MULTI) {
 561				final Jid nextCounterpart = conversation.getNextCounterpart();
 562				if (nextCounterpart != null) {
 563					message.setCounterpart(nextCounterpart);
 564					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 565					message.setType(Message.TYPE_PRIVATE);
 566				}
 567			}
 568		} else {
 569			message = conversation.getCorrectingMessage();
 570			message.setBody(body);
 571			message.setEdited(message.getUuid());
 572			message.setUuid(UUID.randomUUID().toString());
 573		}
 574		switch (message.getConversation().getNextEncryption()) {
 575			case Message.ENCRYPTION_PGP:
 576				sendPgpMessage(message);
 577				break;
 578			case Message.ENCRYPTION_AXOLOTL:
 579				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 580					sendAxolotlMessage(message);
 581				}
 582				break;
 583			default:
 584				sendPlainTextMessage(message);
 585		}
 586	}
 587
 588	protected boolean trustKeysIfNeeded(int requestCode) {
 589		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 590	}
 591
 592	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 593		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 594		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 595		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 596		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 597		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 598		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 599		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 600		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 601			axolotlService.createSessionsIfNeeded(conversation);
 602			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 603			String[] contacts = new String[targets.size()];
 604			for (int i = 0; i < contacts.length; ++i) {
 605				contacts[i] = targets.get(i).toString();
 606			}
 607			intent.putExtra("contacts", contacts);
 608			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 609			intent.putExtra("choice", attachmentChoice);
 610			intent.putExtra("conversation", conversation.getUuid());
 611			startActivityForResult(intent, requestCode);
 612			return true;
 613		} else {
 614			return false;
 615		}
 616	}
 617
 618	public void updateChatMsgHint() {
 619		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 620		if (conversation.getCorrectingMessage() != null) {
 621			this.binding.textinput.setHint(R.string.send_corrected_message);
 622		} else if (multi && conversation.getNextCounterpart() != null) {
 623			this.binding.textinput.setHint(getString(
 624					R.string.send_private_message_to,
 625					conversation.getNextCounterpart().getResourcepart()));
 626		} else if (multi && !conversation.getMucOptions().participating()) {
 627			this.binding.textinput.setHint(R.string.you_are_not_participating);
 628		} else {
 629			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 630			getActivity().invalidateOptionsMenu();
 631		}
 632	}
 633
 634	public void setupIme() {
 635		this.binding.textinput.refreshIme();
 636	}
 637
 638	private void handleActivityResult(ActivityResult activityResult) {
 639		if (activityResult.resultCode == Activity.RESULT_OK) {
 640			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 641		} else {
 642			handleNegativeActivityResult(activityResult.requestCode);
 643		}
 644	}
 645
 646	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 647		switch (requestCode) {
 648			case REQUEST_DECRYPT_PGP:
 649				conversation.getAccount().getPgpDecryptionService().continueDecryption(data);
 650				break;
 651			case REQUEST_TRUST_KEYS_TEXT:
 652				final String body = this.binding.textinput.getText().toString();
 653				Message message = new Message(conversation, body, conversation.getNextEncryption());
 654				sendAxolotlMessage(message);
 655				break;
 656			case REQUEST_TRUST_KEYS_MENU:
 657				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 658				selectPresenceToAttachFile(choice);
 659				break;
 660			case REQUEST_CHOOSE_PGP_ID:
 661				long id = data.getLongExtra(OpenPgpApi.EXTRA_SIGN_KEY_ID,0);
 662				if (id != 0) {
 663					conversation.getAccount().setPgpSignId(id);
 664					activity.announcePgp(conversation.getAccount(),null,null,activity.onOpenPGPKeyPublished);
 665				} else {
 666					activity.choosePgpSignId(conversation.getAccount());
 667				}
 668				break;
 669			case REQUEST_ANNOUNCE_PGP:
 670				activity.announcePgp(conversation.getAccount(), conversation, data, activity.onOpenPGPKeyPublished);
 671				break;
 672			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 673				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 674				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 675					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 676					attachImageToConversation(conversation, i.next());
 677				}
 678				break;
 679			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 680			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 681			case ATTACHMENT_CHOICE_RECORD_VOICE:
 682				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 683				final PresenceSelector.OnPresenceSelected callback = () -> {
 684					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 685						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 686						attachFileToConversation(conversation, i.next());
 687					}
 688				};
 689				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 690					callback.onPresenceSelected();
 691				} else {
 692					activity.selectPresence(conversation, callback);
 693				}
 694				break;
 695			case ATTACHMENT_CHOICE_LOCATION:
 696				double latitude = data.getDoubleExtra("latitude", 0);
 697				double longitude = data.getDoubleExtra("longitude", 0);
 698				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 699				attachLocationToConversation(conversation, geo);
 700				break;
 701		}
 702	}
 703
 704	private void handleNegativeActivityResult(int requestCode) {
 705		switch (requestCode) {
 706			case REQUEST_DECRYPT_PGP:
 707				// discard the message to prevent decryption being blocked
 708				conversation.getAccount().getPgpDecryptionService().giveUpCurrentDecryption();
 709				break;
 710		}
 711	}
 712
 713	@Override
 714	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 715		super.onActivityResult(requestCode, resultCode, data);
 716		ActivityResult activityResult = ActivityResult.of(requestCode,resultCode,data);
 717		if (activity != null && activity.xmppConnectionService != null) {
 718			handleActivityResult(activityResult);
 719		} else {
 720			this.postponedActivityResult = activityResult;
 721		}
 722	}
 723
 724	public void unblockConversation(final Blockable conversation) {
 725		activity.xmppConnectionService.sendUnblockRequest(conversation);
 726	}
 727
 728	@Override
 729	public void onAttach(Context context) {
 730		Log.d(Config.LOGTAG,"onAttach()");
 731		if (context instanceof ConversationsMainActivity) {
 732			this.activity = (ConversationsMainActivity) context;
 733		} else {
 734			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationActivity");
 735		}
 736		super.onAttach(context);
 737	}
 738
 739	@Override
 740	public void onCreate(Bundle savedInstanceState) {
 741		super.onCreate(savedInstanceState);
 742		setHasOptionsMenu(true);
 743	}
 744
 745
 746	@Override
 747	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 748		menuInflater.inflate(R.menu.fragment_conversation, menu);
 749		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 750		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 751		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 752		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 753		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 754
 755
 756		if (conversation != null) {
 757			if (conversation.getMode() == Conversation.MODE_MULTI) {
 758				menuContactDetails.setVisible(false);
 759				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 760			} else {
 761				menuContactDetails.setVisible(!this.conversation.withSelf());
 762				menuMucDetails.setVisible(false);
 763				final XmppConnectionService service = activity.xmppConnectionService;
 764				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 765			}
 766			if (conversation.isMuted()) {
 767				menuMute.setVisible(false);
 768			} else {
 769				menuUnmute.setVisible(false);
 770			}
 771			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 772			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 773		}
 774		super.onCreateOptionsMenu(menu, menuInflater);
 775	}
 776
 777	@Override
 778	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 779		this.binding = DataBindingUtil.inflate(inflater,R.layout.fragment_conversation,container,false);
 780		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 781
 782		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 783
 784		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 785		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 786
 787		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 788
 789		binding.messagesView.setOnScrollListener(mOnScrollListener);
 790		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 791		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 792		messageListAdapter.setOnContactPictureClicked(message -> {
 793			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 794			if (received) {
 795				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 796					Jid user = message.getCounterpart();
 797					if (user != null && !user.isBareJid()) {
 798						if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 799							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 800						}
 801						highlightInConference(user.getResourcepart());
 802					}
 803					return;
 804				} else {
 805					if (!message.getContact().isSelf()) {
 806						String fingerprint;
 807						if (message.getEncryption() == Message.ENCRYPTION_PGP
 808								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 809							fingerprint = "pgp";
 810						} else {
 811							fingerprint = message.getFingerprint();
 812						}
 813						activity.switchToContactDetails(message.getContact(), fingerprint);
 814						return;
 815					}
 816				}
 817			}
 818			Account account = message.getConversation().getAccount();
 819			Intent intent;
 820			if (activity.manuallyChangePresence() && !received) {
 821				intent = new Intent(activity, SetPresenceActivity.class);
 822				intent.putExtra(EXTRA_ACCOUNT, account.getJid().toBareJid().toString());
 823			} else {
 824				intent = new Intent(activity, EditAccountActivity.class);
 825				intent.putExtra("jid", account.getJid().toBareJid().toString());
 826				String fingerprint;
 827				if (message.getEncryption() == Message.ENCRYPTION_PGP
 828						|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 829					fingerprint = "pgp";
 830				} else {
 831					fingerprint = message.getFingerprint();
 832				}
 833				intent.putExtra("fingerprint", fingerprint);
 834			}
 835			startActivity(intent);
 836		});
 837		messageListAdapter.setOnContactPictureLongClicked(message -> {
 838			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 839				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 840					final MucOptions mucOptions = conversation.getMucOptions();
 841					if (!mucOptions.allowPm()) {
 842						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 843						return;
 844					}
 845					Jid user = message.getCounterpart();
 846					if (user != null && !user.isBareJid()) {
 847						if (mucOptions.isUserInRoom(user)) {
 848							privateMessageWith(user);
 849						} else {
 850							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 851						}
 852					}
 853				}
 854			} else {
 855				activity.showQrCode();
 856			}
 857		});
 858		messageListAdapter.setOnQuoteListener(this::quoteText);
 859		binding.messagesView.setAdapter(messageListAdapter);
 860
 861		registerForContextMenu(binding.messagesView);
 862
 863		return binding.getRoot();
 864	}
 865
 866	private void quoteText(String text) {
 867		if (binding.textinput.isEnabled()) {
 868			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 869			Editable editable = binding.textinput.getEditableText();
 870			int position = binding.textinput.getSelectionEnd();
 871			if (position == -1) position = editable.length();
 872			if (position > 0 && editable.charAt(position - 1) != '\n') {
 873				editable.insert(position++, "\n");
 874			}
 875			editable.insert(position, text);
 876			position += text.length();
 877			editable.insert(position++, "\n");
 878			if (position < editable.length() && editable.charAt(position) != '\n') {
 879				editable.insert(position, "\n");
 880			}
 881			binding.textinput.setSelection(position);
 882			binding.textinput.requestFocus();
 883			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
 884			if (inputMethodManager != null) {
 885				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
 886			}
 887		}
 888	}
 889
 890	private void quoteMessage(Message message) {
 891		quoteText(MessageUtils.prepareQuote(message));
 892	}
 893
 894	@Override
 895	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 896		synchronized (this.messageList) {
 897			super.onCreateContextMenu(menu, v, menuInfo);
 898			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 899			this.selectedMessage = this.messageList.get(acmi.position);
 900			populateContextMenu(menu);
 901		}
 902	}
 903
 904	private void populateContextMenu(ContextMenu menu) {
 905		final Message m = this.selectedMessage;
 906		final Transferable t = m.getTransferable();
 907		Message relevantForCorrection = m;
 908		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
 909			relevantForCorrection = relevantForCorrection.next();
 910		}
 911		if (m.getType() != Message.TYPE_STATUS) {
 912			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 913					&& m.getType() != Message.TYPE_PRIVATE
 914					&& t == null;
 915			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
 916					|| m.getEncryption() == Message.ENCRYPTION_PGP;
 917			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 918			menu.setHeaderTitle(R.string.message_options);
 919			MenuItem copyMessage = menu.findItem(R.id.copy_message);
 920			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
 921			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 922			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 923			MenuItem shareWith = menu.findItem(R.id.share_with);
 924			MenuItem sendAgain = menu.findItem(R.id.send_again);
 925			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 926			MenuItem downloadFile = menu.findItem(R.id.download_file);
 927			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 928			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 929			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
 930			if (!treatAsFile && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
 931				copyMessage.setVisible(true);
 932				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
 933			}
 934			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 935				retryDecryption.setVisible(true);
 936			}
 937			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 938					&& relevantForCorrection.isLastCorrectableMessage()
 939					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
 940				correctMessage.setVisible(true);
 941			}
 942			if (treatAsFile || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
 943				shareWith.setVisible(true);
 944			}
 945			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 946				sendAgain.setVisible(true);
 947			}
 948			if (m.hasFileOnRemoteHost()
 949					|| m.isGeoUri()
 950					|| m.treatAsDownloadable()
 951					|| (t != null && t instanceof HttpDownloadConnection)) {
 952				copyUrl.setVisible(true);
 953			}
 954			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
 955				downloadFile.setVisible(true);
 956				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
 957			}
 958			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
 959					|| m.getStatus() == Message.STATUS_UNSEND
 960					|| m.getStatus() == Message.STATUS_OFFERED;
 961			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
 962				cancelTransmission.setVisible(true);
 963			}
 964			if (treatAsFile) {
 965				String path = m.getRelativeFilePath();
 966				if (path == null || !path.startsWith("/")) {
 967					deleteFile.setVisible(true);
 968					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
 969				}
 970			}
 971			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
 972				showErrorMessage.setVisible(true);
 973			}
 974		}
 975	}
 976
 977	@Override
 978	public boolean onContextItemSelected(MenuItem item) {
 979		switch (item.getItemId()) {
 980			case R.id.share_with:
 981				shareWith(selectedMessage);
 982				return true;
 983			case R.id.correct_message:
 984				correctMessage(selectedMessage);
 985				return true;
 986			case R.id.copy_message:
 987				copyMessage(selectedMessage);
 988				return true;
 989			case R.id.quote_message:
 990				quoteMessage(selectedMessage);
 991				return true;
 992			case R.id.send_again:
 993				resendMessage(selectedMessage);
 994				return true;
 995			case R.id.copy_url:
 996				copyUrl(selectedMessage);
 997				return true;
 998			case R.id.download_file:
 999				downloadFile(selectedMessage);
1000				return true;
1001			case R.id.cancel_transmission:
1002				cancelTransmission(selectedMessage);
1003				return true;
1004			case R.id.retry_decryption:
1005				retryDecryption(selectedMessage);
1006				return true;
1007			case R.id.delete_file:
1008				deleteFile(selectedMessage);
1009				return true;
1010			case R.id.show_error_message:
1011				showErrorMessage(selectedMessage);
1012				return true;
1013			default:
1014				return super.onContextItemSelected(item);
1015		}
1016	}
1017
1018	@Override
1019	public boolean onOptionsItemSelected(final MenuItem item) {
1020		if (conversation == null) {
1021			return super.onOptionsItemSelected(item);
1022		}
1023		switch (item.getItemId()) {
1024			case R.id.encryption_choice_axolotl:
1025			case R.id.encryption_choice_pgp:
1026			case R.id.encryption_choice_none:
1027				handleEncryptionSelection(item);
1028				break;
1029			case R.id.attach_choose_picture:
1030			case R.id.attach_take_picture:
1031			case R.id.attach_record_video:
1032			case R.id.attach_choose_file:
1033			case R.id.attach_record_voice:
1034			case R.id.attach_location:
1035				handleAttachmentSelection(item);
1036				break;
1037			case R.id.action_archive:
1038				activity.onConversationArchived(conversation);
1039				break;
1040			case R.id.action_contact_details:
1041				activity.switchToContactDetails(conversation.getContact());
1042				break;
1043			case R.id.action_muc_details:
1044				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1045				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1046				intent.putExtra("uuid", conversation.getUuid());
1047				startActivity(intent);
1048				break;
1049			case R.id.action_invite:
1050				activity.inviteToConversation(conversation);
1051				break;
1052			case R.id.action_clear_history:
1053				clearHistoryDialog(conversation);
1054				break;
1055			case R.id.action_mute:
1056				muteConversationDialog(conversation);
1057				break;
1058			case R.id.action_unmute:
1059				unmuteConversation(conversation);
1060				break;
1061			case R.id.action_block:
1062			case R.id.action_unblock:
1063				final Activity activity = getActivity();
1064				if (activity instanceof XmppActivity) {
1065					BlockContactDialog.show((XmppActivity) activity, conversation);
1066				}
1067				break;
1068			default:
1069				break;
1070		}
1071		return super.onOptionsItemSelected(item);
1072	}
1073
1074	private void handleAttachmentSelection(MenuItem item) {
1075		switch (item.getItemId()) {
1076			case R.id.attach_choose_picture:
1077				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1078				break;
1079			case R.id.attach_take_picture:
1080				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1081				break;
1082			case R.id.attach_record_video:
1083				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1084				break;
1085			case R.id.attach_choose_file:
1086				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1087				break;
1088			case R.id.attach_record_voice:
1089				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1090				break;
1091			case R.id.attach_location:
1092				attachFile(ATTACHMENT_CHOICE_LOCATION);
1093				break;
1094		}
1095	}
1096
1097	private void handleEncryptionSelection(MenuItem item) {
1098		if (conversation == null) {
1099			return;
1100		}
1101		switch (item.getItemId()) {
1102			case R.id.encryption_choice_none:
1103				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1104				item.setChecked(true);
1105				break;
1106			case R.id.encryption_choice_pgp:
1107				if (activity.hasPgp()) {
1108					if (conversation.getAccount().getPgpSignature() != null) {
1109						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1110						item.setChecked(true);
1111					} else {
1112						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1113					}
1114				} else {
1115					activity.showInstallPgpDialog();
1116				}
1117				break;
1118			case R.id.encryption_choice_axolotl:
1119				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1120						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1121				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1122				item.setChecked(true);
1123				break;
1124			default:
1125				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1126				break;
1127		}
1128		activity.xmppConnectionService.updateConversation(conversation);
1129		updateChatMsgHint();
1130		getActivity().invalidateOptionsMenu();
1131		activity.refreshUi();
1132	}
1133
1134	public void attachFile(final int attachmentChoice) {
1135		if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1136			if (!Config.ONLY_INTERNAL_STORAGE && !activity.hasStoragePermission(attachmentChoice)) {
1137				return;
1138			}
1139		}
1140		try {
1141			activity.getPreferences().edit()
1142					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1143					.apply();
1144		} catch (IllegalArgumentException e) {
1145			//just do not save
1146		}
1147		final int encryption = conversation.getNextEncryption();
1148		final int mode = conversation.getMode();
1149		if (encryption == Message.ENCRYPTION_PGP) {
1150			if (activity.hasPgp()) {
1151				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1152					activity.xmppConnectionService.getPgpEngine().hasKey(
1153							conversation.getContact(),
1154							new UiCallback<Contact>() {
1155
1156								@Override
1157								public void userInputRequried(PendingIntent pi, Contact contact) {
1158									startPendingIntent(pi, attachmentChoice);
1159								}
1160
1161								@Override
1162								public void success(Contact contact) {
1163									selectPresenceToAttachFile(attachmentChoice);
1164								}
1165
1166								@Override
1167								public void error(int error, Contact contact) {
1168									activity.replaceToast(getString(error));
1169								}
1170							});
1171				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1172					if (!conversation.getMucOptions().everybodyHasKeys()) {
1173						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1174						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1175						warning.show();
1176					}
1177					selectPresenceToAttachFile(attachmentChoice);
1178				} else {
1179					final ConversationFragment fragment = (ConversationFragment) getFragmentManager()
1180							.findFragmentByTag("conversation");
1181					if (fragment != null) {
1182						fragment.showNoPGPKeyDialog(false, (dialog, which) -> {
1183									conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1184									activity.xmppConnectionService.updateConversation(conversation);
1185									selectPresenceToAttachFile(attachmentChoice);
1186								});
1187					}
1188				}
1189			} else {
1190				activity.showInstallPgpDialog();
1191			}
1192		} else {
1193			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1194				selectPresenceToAttachFile(attachmentChoice);
1195			}
1196		}
1197	}
1198
1199	@Override
1200	public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
1201		if (grantResults.length > 0)
1202			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
1203				if (requestCode == REQUEST_START_DOWNLOAD) {
1204					if (this.mPendingDownloadableMessage != null) {
1205						startDownloadable(this.mPendingDownloadableMessage);
1206					}
1207				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1208					if (this.mPendingEditorContent != null) {
1209						attachImageToConversation(this.mPendingEditorContent);
1210					}
1211				} else {
1212					attachFile(requestCode);
1213				}
1214			} else {
1215				Toast.makeText(getActivity(), R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
1216			}
1217	}
1218
1219	public void startDownloadable(Message message) {
1220		if (!Config.ONLY_INTERNAL_STORAGE && !activity.hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1221			this.mPendingDownloadableMessage = message;
1222			return;
1223		}
1224		Transferable transferable = message.getTransferable();
1225		if (transferable != null) {
1226			if (!transferable.start()) {
1227				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1228			}
1229		} else if (message.treatAsDownloadable()) {
1230			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1231		}
1232	}
1233
1234	@SuppressLint("InflateParams")
1235	protected void clearHistoryDialog(final Conversation conversation) {
1236		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1237		builder.setTitle(getString(R.string.clear_conversation_history));
1238		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1239		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1240		builder.setView(dialogView);
1241		builder.setNegativeButton(getString(R.string.cancel), null);
1242		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1243			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1244			if (endConversationCheckBox.isChecked()) {
1245				this.activity.onConversationArchived(conversation);
1246			} else {
1247				activity.onConversationsListItemUpdated();
1248				updateMessages();
1249			}
1250		});
1251		builder.create().show();
1252	}
1253
1254	protected void muteConversationDialog(final Conversation conversation) {
1255		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1256		builder.setTitle(R.string.disable_notifications);
1257		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1258		builder.setItems(R.array.mute_options_descriptions, (dialog, which) -> {
1259			final long till;
1260			if (durations[which] == -1) {
1261				till = Long.MAX_VALUE;
1262			} else {
1263				till = System.currentTimeMillis() + (durations[which] * 1000);
1264			}
1265			conversation.setMutedTill(till);
1266			activity.xmppConnectionService.updateConversation(conversation);
1267			activity.onConversationsListItemUpdated();
1268			updateMessages();
1269			getActivity().invalidateOptionsMenu();
1270		});
1271		builder.create().show();
1272	}
1273
1274	public void unmuteConversation(final Conversation conversation) {
1275		conversation.setMutedTill(0);
1276		this.activity.xmppConnectionService.updateConversation(conversation);
1277		this.activity.onConversationsListItemUpdated();
1278		updateMessages();
1279		getActivity().invalidateOptionsMenu();
1280	}
1281
1282	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1283		final Account account = conversation.getAccount();
1284		final PresenceSelector.OnPresenceSelected callback = () -> {
1285			Intent intent = new Intent();
1286			boolean chooser = false;
1287			String fallbackPackageId = null;
1288			switch (attachmentChoice) {
1289				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1290					intent.setAction(Intent.ACTION_GET_CONTENT);
1291					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
1292						intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1293					}
1294					intent.setType("image/*");
1295					chooser = true;
1296					break;
1297				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1298					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1299					break;
1300				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1301					Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1302					//TODO save photo uri
1303					//mPendingImageUris.clear();
1304					//mPendingImageUris.add(uri);
1305					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1306					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1307					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1308					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1309					break;
1310				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1311					chooser = true;
1312					intent.setType("*/*");
1313					intent.addCategory(Intent.CATEGORY_OPENABLE);
1314					intent.setAction(Intent.ACTION_GET_CONTENT);
1315					break;
1316				case ATTACHMENT_CHOICE_RECORD_VOICE:
1317					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1318					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1319					break;
1320				case ATTACHMENT_CHOICE_LOCATION:
1321					intent.setAction("eu.siacs.conversations.location.request");
1322					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1323					break;
1324			}
1325			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1326				if (chooser) {
1327					startActivityForResult(
1328							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1329							attachmentChoice);
1330				} else {
1331					startActivityForResult(intent, attachmentChoice);
1332				}
1333			} else if (fallbackPackageId != null) {
1334				startActivity(getInstallApkIntent(fallbackPackageId));
1335			}
1336		};
1337		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1338			conversation.setNextCounterpart(null);
1339			callback.onPresenceSelected();
1340		} else {
1341			activity.selectPresence(conversation, callback);
1342		}
1343	}
1344
1345	private Intent getInstallApkIntent(final String packageId) {
1346		Intent intent = new Intent(Intent.ACTION_VIEW);
1347		intent.setData(Uri.parse("market://details?id=" + packageId));
1348		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1349			return intent;
1350		} else {
1351			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1352			return intent;
1353		}
1354	}
1355
1356	@Override
1357	public void onResume() {
1358		new Handler().post(() -> {
1359			final PackageManager packageManager = getActivity().getPackageManager();
1360			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1361			getActivity().invalidateOptionsMenu();
1362		});
1363		super.onResume();
1364	}
1365
1366	private void showErrorMessage(final Message message) {
1367		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1368		builder.setTitle(R.string.error_message);
1369		builder.setMessage(message.getErrorMessage());
1370		builder.setPositiveButton(R.string.confirm, null);
1371		builder.create().show();
1372	}
1373
1374	private void shareWith(Message message) {
1375		Intent shareIntent = new Intent();
1376		shareIntent.setAction(Intent.ACTION_SEND);
1377		if (message.isGeoUri()) {
1378			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1379			shareIntent.setType("text/plain");
1380		} else if (!message.isFileOrImage()) {
1381			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1382			shareIntent.setType("text/plain");
1383		} else {
1384			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1385			try {
1386				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1387			} catch (SecurityException e) {
1388				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1389				return;
1390			}
1391			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1392			String mime = message.getMimeType();
1393			if (mime == null) {
1394				mime = "*/*";
1395			}
1396			shareIntent.setType(mime);
1397		}
1398		try {
1399			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1400		} catch (ActivityNotFoundException e) {
1401			//This should happen only on faulty androids because normally chooser is always available
1402			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1403		}
1404	}
1405
1406	private void copyMessage(Message message) {
1407		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1408			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1409		}
1410	}
1411
1412	private void deleteFile(Message message) {
1413		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1414			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1415			activity.onConversationsListItemUpdated();
1416			updateMessages();
1417		}
1418	}
1419
1420	private void resendMessage(final Message message) {
1421		if (message.isFileOrImage()) {
1422			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1423			if (file.exists()) {
1424				final Conversation conversation = message.getConversation();
1425				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1426				if (!message.hasFileOnRemoteHost()
1427						&& xmppConnection != null
1428						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1429					activity.selectPresence(conversation, () -> {
1430						message.setCounterpart(conversation.getNextCounterpart());
1431						activity.xmppConnectionService.resendFailedMessages(message);
1432					});
1433					return;
1434				}
1435			} else {
1436				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1437				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1438				activity.onConversationsListItemUpdated();
1439				updateMessages();
1440				return;
1441			}
1442		}
1443		activity.xmppConnectionService.resendFailedMessages(message);
1444	}
1445
1446	private void copyUrl(Message message) {
1447		final String url;
1448		final int resId;
1449		if (message.isGeoUri()) {
1450			resId = R.string.location;
1451			url = message.getBody();
1452		} else if (message.hasFileOnRemoteHost()) {
1453			resId = R.string.file_url;
1454			url = message.getFileParams().url.toString();
1455		} else {
1456			url = message.getBody().trim();
1457			resId = R.string.file_url;
1458		}
1459		if (activity.copyTextToClipboard(url, resId)) {
1460			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1461		}
1462	}
1463
1464	private void downloadFile(Message message) {
1465		activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1466	}
1467
1468	private void cancelTransmission(Message message) {
1469		Transferable transferable = message.getTransferable();
1470		if (transferable != null) {
1471			transferable.cancel();
1472		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1473			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1474		}
1475	}
1476
1477	private void retryDecryption(Message message) {
1478		message.setEncryption(Message.ENCRYPTION_PGP);
1479		activity.onConversationsListItemUpdated();
1480		updateMessages();
1481		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1482	}
1483
1484	protected void privateMessageWith(final Jid counterpart) {
1485		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1486			activity.xmppConnectionService.sendChatState(conversation);
1487		}
1488		this.binding.textinput.setText("");
1489		this.conversation.setNextCounterpart(counterpart);
1490		updateChatMsgHint();
1491		updateSendButton();
1492		updateEditablity();
1493	}
1494
1495	private void correctMessage(Message message) {
1496		while (message.mergeable(message.next())) {
1497			message = message.next();
1498		}
1499		this.conversation.setCorrectingMessage(message);
1500		final Editable editable = binding.textinput.getText();
1501		this.conversation.setDraftMessage(editable.toString());
1502		this.binding.textinput.setText("");
1503		this.binding.textinput.append(message.getBody());
1504
1505	}
1506
1507	protected void highlightInConference(String nick) {
1508		final Editable editable = this.binding.textinput.getText();
1509		String oldString = editable.toString().trim();
1510		final int pos = this.binding.textinput.getSelectionStart();
1511		if (oldString.isEmpty() || pos == 0) {
1512			editable.insert(0, nick + ": ");
1513		} else {
1514			final char before = editable.charAt(pos - 1);
1515			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1516			if (before == '\n') {
1517				editable.insert(pos, nick + ": ");
1518			} else {
1519				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1520					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1521						editable.insert(pos - 2, ", " + nick);
1522						return;
1523					}
1524				}
1525				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1526				if (Character.isWhitespace(after)) {
1527					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1528				}
1529			}
1530		}
1531	}
1532
1533	@Override
1534	public void onStart() {
1535		super.onStart();
1536		reInit(conversation);
1537	}
1538
1539	@Override
1540	public void onStop() {
1541		super.onStop();
1542		final Activity activity = getActivity();
1543		if (activity == null || !activity.isChangingConfigurations()) {
1544			messageListAdapter.stopAudioPlayer();
1545		}
1546		if (this.conversation != null) {
1547			final String msg = this.binding.textinput.getText().toString();
1548			if (this.conversation.setNextMessage(msg)) {
1549				this.activity.xmppConnectionService.updateConversation(this.conversation);
1550			}
1551			updateChatState(this.conversation, msg);
1552		}
1553	}
1554
1555	private void updateChatState(final Conversation conversation, final String msg) {
1556		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1557		Account.State status = conversation.getAccount().getStatus();
1558		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1559			activity.xmppConnectionService.sendChatState(conversation);
1560		}
1561	}
1562
1563	public boolean reInit(Conversation conversation) {
1564		Log.d(Config.LOGTAG,"reInit()");
1565		if (conversation == null) {
1566			return false;
1567		}
1568
1569		if (this.activity == null) {
1570			Log.d(Config.LOGTAG,"activity was null");
1571			this.conversation = conversation;
1572			return false;
1573		}
1574
1575		setupIme();
1576		if (this.conversation != null) {
1577			final String msg = this.binding.textinput.getText().toString();
1578			if (this.conversation.setNextMessage(msg)) {
1579				activity.xmppConnectionService.updateConversation(conversation);
1580			}
1581			if (this.conversation != conversation) {
1582				updateChatState(this.conversation, msg);
1583				messageListAdapter.stopAudioPlayer();
1584			}
1585			this.conversation.trim();
1586
1587		}
1588
1589		if (activity != null) {
1590			this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1591		}
1592
1593		this.conversation = conversation;
1594		this.binding.textinput.setKeyboardListener(null);
1595		this.binding.textinput.setText("");
1596		this.binding.textinput.append(this.conversation.getNextMessage());
1597		this.binding.textinput.setKeyboardListener(this);
1598		messageListAdapter.updatePreferences();
1599		this.binding.messagesView.setAdapter(messageListAdapter);
1600		updateMessages();
1601		this.conversation.messagesLoaded.set(true);
1602		synchronized (this.messageList) {
1603			final Message first = conversation.getFirstUnreadMessage();
1604			final int bottom = Math.max(0, this.messageList.size() - 1);
1605			final int pos;
1606			if (first == null) {
1607				pos = bottom;
1608			} else {
1609				int i = getIndexOf(first.getUuid(), this.messageList);
1610				pos = i < 0 ? bottom : i;
1611			}
1612			this.binding.messagesView.setSelection(pos);
1613			return pos == bottom;
1614		}
1615	}
1616
1617	private boolean showBlockSubmenu(View view) {
1618		final Jid jid = conversation.getJid();
1619		if (jid.isDomainJid()) {
1620			BlockContactDialog.show(activity, conversation);
1621		} else {
1622			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1623			popupMenu.inflate(R.menu.block);
1624			popupMenu.setOnMenuItemClickListener(menuItem -> {
1625				Blockable blockable;
1626				switch (menuItem.getItemId()) {
1627					case R.id.block_domain:
1628						blockable = conversation.getAccount().getRoster().getContact(jid.toDomainJid());
1629						break;
1630					default:
1631						blockable = conversation;
1632				}
1633				BlockContactDialog.show(activity, blockable);
1634				return true;
1635			});
1636			popupMenu.show();
1637		}
1638		return true;
1639	}
1640
1641	private void updateSnackBar(final Conversation conversation) {
1642		final Account account = conversation.getAccount();
1643		final XmppConnection connection = account.getXmppConnection();
1644		final int mode = conversation.getMode();
1645		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1646		if (account.getStatus() == Account.State.DISABLED) {
1647			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1648		} else if (conversation.isBlocked()) {
1649			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1650		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1651			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1652		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1653			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1654		} else if (mode == Conversation.MODE_MULTI
1655				&& !conversation.getMucOptions().online()
1656				&& account.getStatus() == Account.State.ONLINE) {
1657			switch (conversation.getMucOptions().getError()) {
1658				case NICK_IN_USE:
1659					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1660					break;
1661				case NO_RESPONSE:
1662					showSnackbar(R.string.joining_conference, 0, null);
1663					break;
1664				case SERVER_NOT_FOUND:
1665					if (conversation.receivedMessagesCount() > 0) {
1666						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
1667					} else {
1668						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1669					}
1670					break;
1671				case PASSWORD_REQUIRED:
1672					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1673					break;
1674				case BANNED:
1675					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1676					break;
1677				case MEMBERS_ONLY:
1678					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1679					break;
1680				case KICKED:
1681					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1682					break;
1683				case UNKNOWN:
1684					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
1685					break;
1686				case INVALID_NICK:
1687					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
1688				case SHUTDOWN:
1689					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
1690					break;
1691				default:
1692					hideSnackbar();
1693					break;
1694			}
1695		} else if (account.hasPendingPgpIntent(conversation)) {
1696			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1697		} else if (connection != null
1698				&& connection.getFeatures().blocking()
1699				&& conversation.countMessages() != 0
1700				&& !conversation.isBlocked()
1701				&& conversation.isWithStranger()) {
1702			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
1703		} else {
1704			hideSnackbar();
1705		}
1706	}
1707
1708	public void updateMessages() {
1709		synchronized (this.messageList) {
1710			if (getView() == null) {
1711				return;
1712			}
1713			if (this.conversation != null) {
1714				conversation.populateWithMessages(ConversationFragment.this.messageList);
1715				updateSnackBar(conversation);
1716				updateStatusMessages();
1717				this.messageListAdapter.notifyDataSetChanged();
1718				updateChatMsgHint();
1719				if (activity != null) {
1720					activity.onConversationRead(this.conversation);
1721				}
1722				updateSendButton();
1723				updateEditablity();
1724			}
1725		}
1726	}
1727
1728	protected void messageSent() {
1729		mSendingPgpMessage.set(false);
1730		this.binding.textinput.setText("");
1731		if (conversation.setCorrectingMessage(null)) {
1732			this.binding.textinput.append(conversation.getDraftMessage());
1733			conversation.setDraftMessage(null);
1734		}
1735		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
1736			activity.xmppConnectionService.updateConversation(conversation);
1737		}
1738		updateChatMsgHint();
1739		new Handler().post(() -> {
1740			int size = messageList.size();
1741			this.binding.messagesView.setSelection(size - 1);
1742		});
1743	}
1744
1745	public void setFocusOnInputField() {
1746		this.binding.textinput.requestFocus();
1747	}
1748
1749	public void doneSendingPgpMessage() {
1750		mSendingPgpMessage.set(false);
1751	}
1752
1753	public long getMaxHttpUploadSize(Conversation conversation) {
1754		final XmppConnection connection = conversation.getAccount().getXmppConnection();
1755		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
1756	}
1757
1758	private void updateEditablity() {
1759		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
1760		this.binding.textinput.setFocusable(canWrite);
1761		this.binding.textinput.setFocusableInTouchMode(canWrite);
1762		this.binding.textSendButton.setEnabled(canWrite);
1763		this.binding.textinput.setCursorVisible(canWrite);
1764	}
1765
1766	public void updateSendButton() {
1767		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
1768		final Conversation c = this.conversation;
1769		final Presence.Status status;
1770		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
1771		final SendButtonAction action = SendButtonTool.getAction(getActivity(),c,text);
1772		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
1773			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
1774				status = Presence.Status.OFFLINE;
1775			} else if (c.getMode() == Conversation.MODE_SINGLE) {
1776				status = c.getContact().getShownStatus();
1777			} else {
1778				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1779			}
1780		} else {
1781			status = Presence.Status.OFFLINE;
1782		}
1783		this.binding.textSendButton.setTag(action);
1784		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
1785	}
1786
1787	protected void updateDateSeparators() {
1788		synchronized (this.messageList) {
1789			for (int i = 0; i < this.messageList.size(); ++i) {
1790				final Message current = this.messageList.get(i);
1791				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
1792					this.messageList.add(i, Message.createDateSeparator(current));
1793					i++;
1794				}
1795			}
1796		}
1797	}
1798
1799	protected void updateStatusMessages() {
1800		updateDateSeparators();
1801		synchronized (this.messageList) {
1802			if (showLoadMoreMessages(conversation)) {
1803				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1804			}
1805			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1806				ChatState state = conversation.getIncomingChatState();
1807				if (state == ChatState.COMPOSING) {
1808					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1809				} else if (state == ChatState.PAUSED) {
1810					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1811				} else {
1812					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1813						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1814							return;
1815						} else {
1816							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1817								this.messageList.add(i + 1,
1818										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1819								return;
1820							}
1821						}
1822					}
1823				}
1824			} else {
1825				final MucOptions mucOptions = conversation.getMucOptions();
1826				final List<MucOptions.User> allUsers = mucOptions.getUsers();
1827				final Set<ReadByMarker> addedMarkers = new HashSet<>();
1828				ChatState state = ChatState.COMPOSING;
1829				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1830				if (users.size() == 0) {
1831					state = ChatState.PAUSED;
1832					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1833				}
1834				if (mucOptions.isPrivateAndNonAnonymous()) {
1835					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1836						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
1837						final List<MucOptions.User> shownMarkers = new ArrayList<>();
1838						for (ReadByMarker marker : markersForMessage) {
1839							if (!ReadByMarker.contains(marker, addedMarkers)) {
1840								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
1841								MucOptions.User user = mucOptions.findUser(marker);
1842								if (user != null && !users.contains(user)) {
1843									shownMarkers.add(user);
1844								}
1845							}
1846						}
1847						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
1848						final Message statusMessage;
1849						final int size = shownMarkers.size();
1850						if (size > 1) {
1851							final String body;
1852							if (size <= 4) {
1853								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
1854							} else {
1855								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
1856							}
1857							statusMessage = Message.createStatusMessage(conversation, body);
1858							statusMessage.setCounterparts(shownMarkers);
1859						} else if (size == 1) {
1860							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
1861							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
1862							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
1863						} else {
1864							statusMessage = null;
1865						}
1866						if (statusMessage != null) {
1867							this.messageList.add(i + 1, statusMessage);
1868						}
1869						addedMarkers.add(markerForSender);
1870						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
1871							break;
1872						}
1873					}
1874				}
1875				if (users.size() > 0) {
1876					Message statusMessage;
1877					if (users.size() == 1) {
1878						MucOptions.User user = users.get(0);
1879						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
1880						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
1881						statusMessage.setTrueCounterpart(user.getRealJid());
1882						statusMessage.setCounterpart(user.getFullJid());
1883					} else {
1884						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
1885						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
1886						statusMessage.setCounterparts(users);
1887					}
1888					this.messageList.add(statusMessage);
1889				}
1890
1891			}
1892		}
1893	}
1894
1895	public void stopScrolling() {
1896		long now = SystemClock.uptimeMillis();
1897		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
1898		binding.messagesView.dispatchTouchEvent(cancel);
1899	}
1900
1901	private boolean showLoadMoreMessages(final Conversation c) {
1902		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
1903		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
1904		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
1905	}
1906
1907	private boolean hasMamSupport(final Conversation c) {
1908		if (c.getMode() == Conversation.MODE_SINGLE) {
1909			final XmppConnection connection = c.getAccount().getXmppConnection();
1910			return connection != null && connection.getFeatures().mam();
1911		} else {
1912			return c.getMucOptions().mamSupport();
1913		}
1914	}
1915
1916	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
1917		showSnackbar(message, action, clickListener, null);
1918	}
1919
1920	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
1921		this.binding.snackbar.setVisibility(View.VISIBLE);
1922		this.binding.snackbar.setOnClickListener(null);
1923		this.binding.snackbarMessage.setText(message);
1924		this.binding.snackbarMessage.setOnClickListener(null);
1925		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
1926		if (action != 0) {
1927			this.binding.snackbarAction.setText(action);
1928		}
1929		this.binding.snackbarAction.setOnClickListener(clickListener);
1930		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
1931	}
1932
1933	protected void hideSnackbar() {
1934		this.binding.snackbar.setVisibility(View.GONE);
1935	}
1936
1937	protected void sendPlainTextMessage(Message message) {
1938		activity.xmppConnectionService.sendMessage(message);
1939		messageSent();
1940	}
1941
1942	protected void sendPgpMessage(final Message message) {
1943		final XmppConnectionService xmppService = activity.xmppConnectionService;
1944		final Contact contact = message.getConversation().getContact();
1945		if (!activity.hasPgp()) {
1946			activity.showInstallPgpDialog();
1947			return;
1948		}
1949		if (conversation.getAccount().getPgpSignature() == null) {
1950			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1951			return;
1952		}
1953		if (!mSendingPgpMessage.compareAndSet(false, true)) {
1954			Log.d(Config.LOGTAG, "sending pgp message already in progress");
1955		}
1956		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1957			if (contact.getPgpKeyId() != 0) {
1958				xmppService.getPgpEngine().hasKey(contact,
1959						new UiCallback<Contact>() {
1960
1961							@Override
1962							public void userInputRequried(PendingIntent pi,Contact contact) {
1963								startPendingIntent(pi,REQUEST_ENCRYPT_MESSAGE);
1964							}
1965
1966							@Override
1967							public void success(Contact contact) {
1968								encryptTextMessage(message);
1969							}
1970
1971							@Override
1972							public void error(int error, Contact contact) {
1973								activity.runOnUiThread(() -> Toast.makeText(activity,
1974										R.string.unable_to_connect_to_keychain,
1975										Toast.LENGTH_SHORT
1976								).show());
1977								mSendingPgpMessage.set(false);
1978							}
1979						});
1980
1981			} else {
1982				showNoPGPKeyDialog(false, (dialog, which) -> {
1983							conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1984							xmppService.updateConversation(conversation);
1985							message.setEncryption(Message.ENCRYPTION_NONE);
1986							xmppService.sendMessage(message);
1987							messageSent();
1988						});
1989			}
1990		} else {
1991			if (conversation.getMucOptions().pgpKeysInUse()) {
1992				if (!conversation.getMucOptions().everybodyHasKeys()) {
1993					Toast warning = Toast
1994							.makeText(getActivity(),
1995									R.string.missing_public_keys,
1996									Toast.LENGTH_LONG);
1997					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1998					warning.show();
1999				}
2000				encryptTextMessage(message);
2001			} else {
2002				showNoPGPKeyDialog(true, (dialog, which) -> {
2003							conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2004							message.setEncryption(Message.ENCRYPTION_NONE);
2005							xmppService.updateConversation(conversation);
2006							xmppService.sendMessage(message);
2007							messageSent();
2008						});
2009			}
2010		}
2011	}
2012
2013	public void encryptTextMessage(Message message) {
2014		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2015				new UiCallback<Message>() {
2016
2017					@Override
2018					public void userInputRequried(PendingIntent pi, Message message) {
2019						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2020					}
2021
2022					@Override
2023					public void success(Message message) {
2024						message.setEncryption(Message.ENCRYPTION_DECRYPTED);
2025						activity.xmppConnectionService.sendMessage(message);
2026						getActivity().runOnUiThread(() -> messageSent());
2027					}
2028
2029					@Override
2030					public void error(final int error, Message message) {
2031						getActivity().runOnUiThread(() -> {
2032							doneSendingPgpMessage();
2033							Toast.makeText(getActivity(),R.string.unable_to_connect_to_keychain,Toast.LENGTH_SHORT).show();
2034						});
2035
2036					}
2037				});
2038	}
2039
2040	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2041		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2042		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2043		if (plural) {
2044			builder.setTitle(getString(R.string.no_pgp_keys));
2045			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2046		} else {
2047			builder.setTitle(getString(R.string.no_pgp_key));
2048			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2049		}
2050		builder.setNegativeButton(getString(R.string.cancel), null);
2051		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2052		builder.create().show();
2053	}
2054
2055	protected void sendAxolotlMessage(final Message message) {
2056		activity.xmppConnectionService.sendMessage(message);
2057		messageSent();
2058	}
2059
2060	public void appendText(String text) {
2061		if (text == null) {
2062			return;
2063		}
2064		String previous = this.binding.textinput.getText().toString();
2065		if (previous.length() != 0 && !previous.endsWith(" ")) {
2066			text = " " + text;
2067		}
2068		this.binding.textinput.append(text);
2069	}
2070
2071	@Override
2072	public boolean onEnterPressed() {
2073		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2074		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2075		if (enterIsSend) {
2076			sendMessage();
2077			return true;
2078		} else {
2079			return false;
2080		}
2081	}
2082
2083	@Override
2084	public void onTypingStarted() {
2085		Account.State status = conversation.getAccount().getStatus();
2086		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2087			activity.xmppConnectionService.sendChatState(conversation);
2088		}
2089		updateSendButton();
2090	}
2091
2092	@Override
2093	public void onTypingStopped() {
2094		Account.State status = conversation.getAccount().getStatus();
2095		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2096			activity.xmppConnectionService.sendChatState(conversation);
2097		}
2098	}
2099
2100	@Override
2101	public void onTextDeleted() {
2102		Account.State status = conversation.getAccount().getStatus();
2103		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2104			activity.xmppConnectionService.sendChatState(conversation);
2105		}
2106		updateSendButton();
2107	}
2108
2109	@Override
2110	public void onTextChanged() {
2111		if (conversation != null && conversation.getCorrectingMessage() != null) {
2112			updateSendButton();
2113		}
2114	}
2115
2116	@Override
2117	public boolean onTabPressed(boolean repeated) {
2118		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2119			return false;
2120		}
2121		if (repeated) {
2122			completionIndex++;
2123		} else {
2124			lastCompletionLength = 0;
2125			completionIndex = 0;
2126			final String content = this.binding.textinput.getText().toString();
2127			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2128			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2129			firstWord = start == 0;
2130			incomplete = content.substring(start, lastCompletionCursor);
2131		}
2132		List<String> completions = new ArrayList<>();
2133		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2134			String name = user.getName();
2135			if (name != null && name.startsWith(incomplete)) {
2136				completions.add(name + (firstWord ? ": " : " "));
2137			}
2138		}
2139		Collections.sort(completions);
2140		if (completions.size() > completionIndex) {
2141			String completion = completions.get(completionIndex).substring(incomplete.length());
2142			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2143			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2144			lastCompletionLength = completion.length();
2145		} else {
2146			completionIndex = -1;
2147			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2148			lastCompletionLength = 0;
2149		}
2150		return true;
2151	}
2152
2153	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2154		try {
2155			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode,null, 0, 0, 0);
2156		} catch (final SendIntentException ignored) {
2157		}
2158	}
2159
2160	@Override
2161	public void onBackendConnected() {
2162		if (postponedActivityResult != null) {
2163			handleActivityResult(postponedActivityResult);
2164		}
2165		postponedActivityResult = null;
2166	}
2167
2168	public void clearPending() {
2169		if (postponedActivityResult != null) {
2170			Log.d(Config.LOGTAG,"cleared pending intent with unhandled result left");
2171		}
2172		postponedActivityResult = null;
2173	}
2174}