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.DateSeparator;
  89import eu.siacs.conversations.ui.util.ListViewUtils;
  90import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  91import eu.siacs.conversations.ui.util.PendingItem;
  92import eu.siacs.conversations.ui.util.PresenceSelector;
  93import eu.siacs.conversations.ui.util.ScrollState;
  94import eu.siacs.conversations.ui.util.SendButtonAction;
  95import eu.siacs.conversations.ui.util.SendButtonTool;
  96import eu.siacs.conversations.ui.util.ShareUtil;
  97import eu.siacs.conversations.ui.widget.EditMessage;
  98import eu.siacs.conversations.utils.MessageUtils;
  99import eu.siacs.conversations.utils.NickValidityChecker;
 100import eu.siacs.conversations.utils.QuickLoader;
 101import eu.siacs.conversations.utils.StylingHelper;
 102import eu.siacs.conversations.utils.TimeframeUtils;
 103import eu.siacs.conversations.utils.UIHelper;
 104import eu.siacs.conversations.xmpp.XmppConnection;
 105import eu.siacs.conversations.xmpp.chatstate.ChatState;
 106import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 107import rocks.xmpp.addr.Jid;
 108
 109import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 110import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 111import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
 112
 113
 114public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 115
 116
 117	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 118	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 119	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 120	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 121	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 122	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 123	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 124	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 125	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 126	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 127	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 128	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 129	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 130	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 131
 132	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 133	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 134	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 135	public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 136	private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 137
 138	private final List<Message> messageList = new ArrayList<>();
 139	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 140	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 141	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 142	private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 143	private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 144	private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 145	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 146	public Uri mPendingEditorContent = null;
 147	protected MessageAdapter messageListAdapter;
 148	private String lastMessageUuid = null;
 149	private Conversation conversation;
 150	private FragmentConversationBinding binding;
 151	private Toast messageLoaderToast;
 152	private ConversationsActivity activity;
 153	private boolean reInitRequiredOnStart = true;
 154	private OnClickListener clickToMuc = new OnClickListener() {
 155
 156		@Override
 157		public void onClick(View v) {
 158			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 159			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 160			intent.putExtra("uuid", conversation.getUuid());
 161			startActivity(intent);
 162		}
 163	};
 164	private OnClickListener leaveMuc = new OnClickListener() {
 165
 166		@Override
 167		public void onClick(View v) {
 168			activity.xmppConnectionService.archiveConversation(conversation);
 169		}
 170	};
 171	private OnClickListener joinMuc = new OnClickListener() {
 172
 173		@Override
 174		public void onClick(View v) {
 175			activity.xmppConnectionService.joinMuc(conversation);
 176		}
 177	};
 178	private OnClickListener enterPassword = new OnClickListener() {
 179
 180		@Override
 181		public void onClick(View v) {
 182			MucOptions muc = conversation.getMucOptions();
 183			String password = muc.getPassword();
 184			if (password == null) {
 185				password = "";
 186			}
 187			activity.quickPasswordEdit(password, value -> {
 188				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 189				return null;
 190			});
 191		}
 192	};
 193	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 194
 195		@Override
 196		public void onScrollStateChanged(AbsListView view, int scrollState) {
 197			if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 198				fireReadEvent();
 199			}
 200		}
 201
 202		@Override
 203		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 204			toggleScrollDownButton(view);
 205			synchronized (ConversationFragment.this.messageList) {
 206				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 207					long timestamp;
 208					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 209						timestamp = messageList.get(1).getTimeSent();
 210					} else {
 211						timestamp = messageList.get(0).getTimeSent();
 212					}
 213					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 214						@Override
 215						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 216							if (ConversationFragment.this.conversation != conversation) {
 217								conversation.messagesLoaded.set(true);
 218								return;
 219							}
 220							runOnUiThread(() -> {
 221								synchronized (messageList) {
 222									final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 223									Message message = null;
 224									int childPos;
 225									for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 226										message = messageList.get(oldPosition + childPos);
 227										if (message.getType() != Message.TYPE_STATUS) {
 228											break;
 229										}
 230									}
 231									final String uuid = message != null ? message.getUuid() : null;
 232									View v = binding.messagesView.getChildAt(childPos);
 233									final int pxOffset = (v == null) ? 0 : v.getTop();
 234									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 235									try {
 236										updateStatusMessages();
 237									} catch (IllegalStateException e) {
 238										Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 239									}
 240									messageListAdapter.notifyDataSetChanged();
 241									int pos = Math.max(getIndexOf(uuid, messageList), 0);
 242									binding.messagesView.setSelectionFromTop(pos, pxOffset);
 243									if (messageLoaderToast != null) {
 244										messageLoaderToast.cancel();
 245									}
 246									conversation.messagesLoaded.set(true);
 247								}
 248							});
 249						}
 250
 251						@Override
 252						public void informUser(final int resId) {
 253
 254							runOnUiThread(() -> {
 255								if (messageLoaderToast != null) {
 256									messageLoaderToast.cancel();
 257								}
 258								if (ConversationFragment.this.conversation != conversation) {
 259									return;
 260								}
 261								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 262								messageLoaderToast.show();
 263							});
 264
 265						}
 266					});
 267
 268				}
 269			}
 270		}
 271	};
 272	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 273		@Override
 274		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 275			// try to get permission to read the image, if applicable
 276			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 277				try {
 278					inputContentInfo.requestPermission();
 279				} catch (Exception e) {
 280					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 281					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 282					).show();
 283					return false;
 284				}
 285			}
 286			if (hasPermissions(REQUEST_ADD_EDITOR_CONTENT, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 287				attachImageToConversation(inputContentInfo.getContentUri());
 288			} else {
 289				mPendingEditorContent = inputContentInfo.getContentUri();
 290			}
 291			return true;
 292		}
 293	};
 294	private Message selectedMessage;
 295	private OnClickListener mEnableAccountListener = new OnClickListener() {
 296		@Override
 297		public void onClick(View v) {
 298			final Account account = conversation == null ? null : conversation.getAccount();
 299			if (account != null) {
 300				account.setOption(Account.OPTION_DISABLED, false);
 301				activity.xmppConnectionService.updateAccount(account);
 302			}
 303		}
 304	};
 305	private OnClickListener mUnblockClickListener = new OnClickListener() {
 306		@Override
 307		public void onClick(final View v) {
 308			v.post(() -> v.setVisibility(View.INVISIBLE));
 309			if (conversation.isDomainBlocked()) {
 310				BlockContactDialog.show(activity, conversation);
 311			} else {
 312				unblockConversation(conversation);
 313			}
 314		}
 315	};
 316	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 317	private OnClickListener mAddBackClickListener = new OnClickListener() {
 318
 319		@Override
 320		public void onClick(View v) {
 321			final Contact contact = conversation == null ? null : conversation.getContact();
 322			if (contact != null) {
 323				activity.xmppConnectionService.createContact(contact, true);
 324				activity.switchToContactDetails(contact);
 325			}
 326		}
 327	};
 328	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 329	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 330		@Override
 331		public void onClick(View v) {
 332			final Contact contact = conversation == null ? null : conversation.getContact();
 333			if (contact != null) {
 334				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 335						activity.xmppConnectionService.getPresenceGenerator()
 336								.sendPresenceUpdatesTo(contact));
 337				hideSnackbar();
 338			}
 339		}
 340	};
 341	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 342
 343		@Override
 344		public void onClick(View v) {
 345			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 346			if (pendingIntent != null) {
 347				try {
 348					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 349							REQUEST_DECRYPT_PGP,
 350							null,
 351							0,
 352							0,
 353							0);
 354				} catch (SendIntentException e) {
 355					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 356					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 357				}
 358			}
 359			updateSnackBar(conversation);
 360		}
 361	};
 362	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 363	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 364		if (actionId == EditorInfo.IME_ACTION_SEND) {
 365			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 366			if (imm != null && imm.isFullscreenMode()) {
 367				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 368			}
 369			sendMessage();
 370			return true;
 371		} else {
 372			return false;
 373		}
 374	};
 375	private OnClickListener mScrollButtonListener = new OnClickListener() {
 376
 377		@Override
 378		public void onClick(View v) {
 379			stopScrolling();
 380			setSelection(binding.messagesView.getCount() - 1, true);
 381		}
 382	};
 383	private OnClickListener mSendButtonListener = new OnClickListener() {
 384
 385		@Override
 386		public void onClick(View v) {
 387			Object tag = v.getTag();
 388			if (tag instanceof SendButtonAction) {
 389				SendButtonAction action = (SendButtonAction) tag;
 390				switch (action) {
 391					case TAKE_PHOTO:
 392					case RECORD_VIDEO:
 393					case SEND_LOCATION:
 394					case RECORD_VOICE:
 395					case CHOOSE_PICTURE:
 396						attachFile(action.toChoice());
 397						break;
 398					case CANCEL:
 399						if (conversation != null) {
 400							if (conversation.setCorrectingMessage(null)) {
 401								binding.textinput.setText("");
 402								binding.textinput.append(conversation.getDraftMessage());
 403								conversation.setDraftMessage(null);
 404							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 405								conversation.setNextCounterpart(null);
 406							}
 407							updateChatMsgHint();
 408							updateSendButton();
 409							updateEditablity();
 410						}
 411						break;
 412					default:
 413						sendMessage();
 414				}
 415			} else {
 416				sendMessage();
 417			}
 418		}
 419	};
 420	private int completionIndex = 0;
 421	private int lastCompletionLength = 0;
 422	private String incomplete;
 423	private int lastCompletionCursor;
 424	private boolean firstWord = false;
 425	private Message mPendingDownloadableMessage;
 426
 427	private static ConversationFragment findConversationFragment(Activity activity) {
 428		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 429		if (fragment != null && fragment instanceof ConversationFragment) {
 430			return (ConversationFragment) fragment;
 431		}
 432		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 433		if (fragment != null && fragment instanceof ConversationFragment) {
 434			return (ConversationFragment) fragment;
 435		}
 436		return null;
 437	}
 438
 439	public static void startStopPending(Activity activity) {
 440		ConversationFragment fragment = findConversationFragment(activity);
 441		if (fragment != null) {
 442			fragment.messageListAdapter.startStopPending();
 443		}
 444	}
 445
 446	public static void downloadFile(Activity activity, Message message) {
 447		ConversationFragment fragment = findConversationFragment(activity);
 448		if (fragment != null) {
 449			fragment.startDownloadable(message);
 450		}
 451	}
 452
 453	public static void registerPendingMessage(Activity activity, Message message) {
 454		ConversationFragment fragment = findConversationFragment(activity);
 455		if (fragment != null) {
 456			fragment.pendingMessage.push(message);
 457		}
 458	}
 459
 460	public static void openPendingMessage(Activity activity) {
 461		ConversationFragment fragment = findConversationFragment(activity);
 462		if (fragment != null) {
 463			Message message = fragment.pendingMessage.pop();
 464			if (message != null) {
 465				fragment.messageListAdapter.openDownloadable(message);
 466			}
 467		}
 468	}
 469
 470	public static Conversation getConversation(Activity activity) {
 471		return getConversation(activity, R.id.secondary_fragment);
 472	}
 473
 474	private static Conversation getConversation(Activity activity, @IdRes int res) {
 475		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 476		if (fragment != null && fragment instanceof ConversationFragment) {
 477			return ((ConversationFragment) fragment).getConversation();
 478		} else {
 479			return null;
 480		}
 481	}
 482
 483	public static Conversation getConversationReliable(Activity activity) {
 484		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 485		if (conversation != null) {
 486			return conversation;
 487		}
 488		return getConversation(activity, R.id.main_fragment);
 489	}
 490
 491	private static boolean allGranted(int[] grantResults) {
 492		for (int grantResult : grantResults) {
 493			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 494				return false;
 495			}
 496		}
 497		return true;
 498	}
 499
 500	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 501		for (int i = 0; i < grantResults.length; ++i) {
 502			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 503				return permissions[i];
 504			}
 505		}
 506		return null;
 507	}
 508
 509	private static boolean scrolledToBottom(AbsListView listView) {
 510		final int count = listView.getCount();
 511		if (count == 0) {
 512			return true;
 513		} else if (listView.getLastVisiblePosition() == count - 1) {
 514			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 515			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 516		} else {
 517			return false;
 518		}
 519	}
 520
 521	private void toggleScrollDownButton() {
 522		toggleScrollDownButton(binding.messagesView);
 523	}
 524
 525	private void toggleScrollDownButton(AbsListView listView) {
 526		if (conversation == null) {
 527			return;
 528		}
 529		if (scrolledToBottom(listView)) {
 530			lastMessageUuid = null;
 531			hideUnreadMessagesCount();
 532		} else {
 533			binding.scrollToBottomButton.setEnabled(true);
 534			binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 535			if (lastMessageUuid == null) {
 536				lastMessageUuid = conversation.getLatestMessage().getUuid();
 537			}
 538			if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 539				binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 540			}
 541		}
 542	}
 543
 544	private int getIndexOf(String uuid, List<Message> messages) {
 545		if (uuid == null) {
 546			return messages.size() - 1;
 547		}
 548		for (int i = 0; i < messages.size(); ++i) {
 549			if (uuid.equals(messages.get(i).getUuid())) {
 550				return i;
 551			} else {
 552				Message next = messages.get(i);
 553				while (next != null && next.wasMergedIntoPrevious()) {
 554					if (uuid.equals(next.getUuid())) {
 555						return i;
 556					}
 557					next = next.next();
 558				}
 559
 560			}
 561		}
 562		return -1;
 563	}
 564
 565	private ScrollState getScrollPosition() {
 566		final ListView listView = this.binding.messagesView;
 567		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 568			return null;
 569		} else {
 570			final int pos = listView.getFirstVisiblePosition();
 571			final View view = listView.getChildAt(0);
 572			if (view == null) {
 573				return null;
 574			} else {
 575				return new ScrollState(pos, view.getTop());
 576			}
 577		}
 578	}
 579
 580	private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 581		if (scrollPosition != null) {
 582
 583			this.lastMessageUuid = lastMessageUuid;
 584			if (lastMessageUuid != null) {
 585				binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 586			}
 587			//TODO maybe this needs a 'post'
 588			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 589			toggleScrollDownButton();
 590		}
 591	}
 592
 593	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 594		if (conversation == null) {
 595			return;
 596		}
 597		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 598
 599			@Override
 600			public void success(Message message) {
 601
 602			}
 603
 604			@Override
 605			public void error(int errorCode, Message object) {
 606				//TODO show possible pgp error
 607			}
 608
 609			@Override
 610			public void userInputRequried(PendingIntent pi, Message object) {
 611
 612			}
 613		});
 614	}
 615
 616	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 617		if (conversation == null) {
 618			return;
 619		}
 620		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 621		prepareFileToast.show();
 622		activity.delegateUriPermissionsToService(uri);
 623		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 624			@Override
 625			public void inform(final String text) {
 626				hidePrepareFileToast(prepareFileToast);
 627				runOnUiThread(() -> activity.replaceToast(text));
 628			}
 629
 630			@Override
 631			public void success(Message message) {
 632				runOnUiThread(() -> activity.hideToast());
 633				hidePrepareFileToast(prepareFileToast);
 634			}
 635
 636			@Override
 637			public void error(final int errorCode, Message message) {
 638				hidePrepareFileToast(prepareFileToast);
 639				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 640
 641			}
 642
 643			@Override
 644			public void userInputRequried(PendingIntent pi, Message message) {
 645				hidePrepareFileToast(prepareFileToast);
 646			}
 647		});
 648	}
 649
 650	public void attachImageToConversation(Uri uri) {
 651		this.attachImageToConversation(conversation, uri);
 652	}
 653
 654	private void attachImageToConversation(Conversation conversation, Uri uri) {
 655		if (conversation == null) {
 656			return;
 657		}
 658		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 659		prepareFileToast.show();
 660		activity.delegateUriPermissionsToService(uri);
 661		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 662				new UiCallback<Message>() {
 663
 664					@Override
 665					public void userInputRequried(PendingIntent pi, Message object) {
 666						hidePrepareFileToast(prepareFileToast);
 667					}
 668
 669					@Override
 670					public void success(Message message) {
 671						hidePrepareFileToast(prepareFileToast);
 672					}
 673
 674					@Override
 675					public void error(final int error, Message message) {
 676						hidePrepareFileToast(prepareFileToast);
 677						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 678					}
 679				});
 680	}
 681
 682	private void hidePrepareFileToast(final Toast prepareFileToast) {
 683		if (prepareFileToast != null && activity != null) {
 684			activity.runOnUiThread(prepareFileToast::cancel);
 685		}
 686	}
 687
 688	private void sendMessage() {
 689		final String body = this.binding.textinput.getText().toString();
 690		final Conversation conversation = this.conversation;
 691		if (body.length() == 0 || conversation == null) {
 692			return;
 693		}
 694		final Message message;
 695		if (conversation.getCorrectingMessage() == null) {
 696			message = new Message(conversation, body, conversation.getNextEncryption());
 697			if (conversation.getMode() == Conversation.MODE_MULTI) {
 698				final Jid nextCounterpart = conversation.getNextCounterpart();
 699				if (nextCounterpart != null) {
 700					message.setCounterpart(nextCounterpart);
 701					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 702					message.setType(Message.TYPE_PRIVATE);
 703				}
 704			}
 705		} else {
 706			message = conversation.getCorrectingMessage();
 707			message.setBody(body);
 708			message.setEdited(message.getUuid());
 709			message.setUuid(UUID.randomUUID().toString());
 710		}
 711		switch (conversation.getNextEncryption()) {
 712			case Message.ENCRYPTION_PGP:
 713				sendPgpMessage(message);
 714				break;
 715			case Message.ENCRYPTION_AXOLOTL:
 716				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 717					sendMessage(message);
 718				}
 719				break;
 720			default:
 721				sendMessage(message);
 722		}
 723	}
 724
 725	protected boolean trustKeysIfNeeded(int requestCode) {
 726		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 727	}
 728
 729	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 730		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 731		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 732		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 733		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 734		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 735		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 736		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 737		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 738			axolotlService.createSessionsIfNeeded(conversation);
 739			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 740			String[] contacts = new String[targets.size()];
 741			for (int i = 0; i < contacts.length; ++i) {
 742				contacts[i] = targets.get(i).toString();
 743			}
 744			intent.putExtra("contacts", contacts);
 745			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 746			intent.putExtra("choice", attachmentChoice);
 747			intent.putExtra("conversation", conversation.getUuid());
 748			startActivityForResult(intent, requestCode);
 749			return true;
 750		} else {
 751			return false;
 752		}
 753	}
 754
 755	public void updateChatMsgHint() {
 756		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 757		if (conversation.getCorrectingMessage() != null) {
 758			this.binding.textinput.setHint(R.string.send_corrected_message);
 759		} else if (multi && conversation.getNextCounterpart() != null) {
 760			this.binding.textinput.setHint(getString(
 761					R.string.send_private_message_to,
 762					conversation.getNextCounterpart().getResource()));
 763		} else if (multi && !conversation.getMucOptions().participating()) {
 764			this.binding.textinput.setHint(R.string.you_are_not_participating);
 765		} else {
 766			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 767			getActivity().invalidateOptionsMenu();
 768		}
 769	}
 770
 771	public void setupIme() {
 772		this.binding.textinput.refreshIme();
 773	}
 774
 775	private void handleActivityResult(ActivityResult activityResult) {
 776		if (activityResult.resultCode == Activity.RESULT_OK) {
 777			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 778		} else {
 779			handleNegativeActivityResult(activityResult.requestCode);
 780		}
 781	}
 782
 783	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 784		switch (requestCode) {
 785			case REQUEST_TRUST_KEYS_TEXT:
 786				final String body = this.binding.textinput.getText().toString();
 787				Message message = new Message(conversation, body, conversation.getNextEncryption());
 788				sendMessage(message);
 789				break;
 790			case REQUEST_TRUST_KEYS_MENU:
 791				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 792				selectPresenceToAttachFile(choice);
 793				break;
 794			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 795				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 796				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 797					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 798					attachImageToConversation(conversation, i.next());
 799				}
 800				break;
 801			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 802				Uri takePhotoUri = pendingTakePhotoUri.pop();
 803				if (takePhotoUri != null) {
 804					attachImageToConversation(conversation, takePhotoUri);
 805				} else {
 806					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 807				}
 808				break;
 809			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 810			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 811			case ATTACHMENT_CHOICE_RECORD_VOICE:
 812				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 813				String type = data.getType();
 814				final PresenceSelector.OnPresenceSelected callback = () -> {
 815					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 816						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 817						attachFileToConversation(conversation, i.next(), type);
 818					}
 819				};
 820				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 821					callback.onPresenceSelected();
 822				} else {
 823					activity.selectPresence(conversation, callback);
 824				}
 825				break;
 826			case ATTACHMENT_CHOICE_LOCATION:
 827				double latitude = data.getDoubleExtra("latitude", 0);
 828				double longitude = data.getDoubleExtra("longitude", 0);
 829				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 830				attachLocationToConversation(conversation, geo);
 831				break;
 832			case REQUEST_INVITE_TO_CONVERSATION:
 833				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 834				if (invite != null) {
 835					if (invite.execute(activity)) {
 836						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 837						activity.mToast.show();
 838					}
 839				}
 840				break;
 841		}
 842	}
 843
 844	private void handleNegativeActivityResult(int requestCode) {
 845		switch (requestCode) {
 846			//nothing to do for now
 847		}
 848	}
 849
 850	@Override
 851	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 852		super.onActivityResult(requestCode, resultCode, data);
 853		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 854		if (activity != null && activity.xmppConnectionService != null) {
 855			handleActivityResult(activityResult);
 856		} else {
 857			this.postponedActivityResult.push(activityResult);
 858		}
 859	}
 860
 861	public void unblockConversation(final Blockable conversation) {
 862		activity.xmppConnectionService.sendUnblockRequest(conversation);
 863	}
 864
 865	@Override
 866	public void onAttach(Activity activity) {
 867		super.onAttach(activity);
 868		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 869		if (activity instanceof ConversationsActivity) {
 870			this.activity = (ConversationsActivity) activity;
 871		} else {
 872			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 873		}
 874	}
 875
 876	@Override
 877	public void onDetach() {
 878		super.onDetach();
 879		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 880	}
 881
 882	@Override
 883	public void onCreate(Bundle savedInstanceState) {
 884		super.onCreate(savedInstanceState);
 885		setHasOptionsMenu(true);
 886	}
 887
 888	@Override
 889	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 890		menuInflater.inflate(R.menu.fragment_conversation, menu);
 891		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 892		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 893		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 894		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 895		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 896
 897
 898		if (conversation != null) {
 899			if (conversation.getMode() == Conversation.MODE_MULTI) {
 900				menuContactDetails.setVisible(false);
 901				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 902			} else {
 903				menuContactDetails.setVisible(!this.conversation.withSelf());
 904				menuMucDetails.setVisible(false);
 905				final XmppConnectionService service = activity.xmppConnectionService;
 906				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 907			}
 908			if (conversation.isMuted()) {
 909				menuMute.setVisible(false);
 910			} else {
 911				menuUnmute.setVisible(false);
 912			}
 913			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 914			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 915		}
 916		super.onCreateOptionsMenu(menu, menuInflater);
 917	}
 918
 919	@Override
 920	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 921		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 922		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 923
 924		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 925
 926		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 927		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 928
 929		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 930
 931		binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 932		binding.messagesView.setOnScrollListener(mOnScrollListener);
 933		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 934		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 935		messageListAdapter.setOnContactPictureClicked(message -> {
 936			String fingerprint;
 937			if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 938				fingerprint = "pgp";
 939			} else {
 940				fingerprint = message.getFingerprint();
 941			}
 942			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 943			if (received) {
 944				if (message.getConversation() instanceof Conversation && message.getConversation().getMode() == Conversation.MODE_MULTI) {
 945					Jid user = message.getCounterpart();
 946					if (user != null && !user.isBareJid()) {
 947						final MucOptions mucOptions = ((Conversation) message.getConversation()).getMucOptions();
 948						if (mucOptions.participating() || ((Conversation) message.getConversation()).getNextCounterpart() != null) {
 949							if (!mucOptions.isUserInRoom(user)) {
 950								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 951							}
 952							highlightInConference(user.getResource());
 953						} else {
 954							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 955						}
 956					}
 957					return;
 958				} else {
 959					if (!message.getContact().isSelf()) {
 960						activity.switchToContactDetails(message.getContact(), fingerprint);
 961						return;
 962					}
 963				}
 964			}
 965			activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
 966		});
 967		messageListAdapter.setOnContactPictureLongClicked(message -> {
 968			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 969				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 970					final MucOptions mucOptions = conversation.getMucOptions();
 971					if (!mucOptions.allowPm()) {
 972						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 973						return;
 974					}
 975					Jid user = message.getCounterpart();
 976					if (user != null && !user.isBareJid()) {
 977						if (mucOptions.isUserInRoom(user)) {
 978							privateMessageWith(user);
 979						} else {
 980							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 981						}
 982					}
 983				}
 984			} else {
 985				activity.showQrCode(conversation.getAccount().getShareableUri());
 986			}
 987		});
 988		messageListAdapter.setOnQuoteListener(this::quoteText);
 989		binding.messagesView.setAdapter(messageListAdapter);
 990
 991		registerForContextMenu(binding.messagesView);
 992
 993		return binding.getRoot();
 994	}
 995
 996	private void quoteText(String text) {
 997		if (binding.textinput.isEnabled()) {
 998			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 999			Editable editable = binding.textinput.getEditableText();
1000			int position = binding.textinput.getSelectionEnd();
1001			if (position == -1) position = editable.length();
1002			if (position > 0 && editable.charAt(position - 1) != '\n') {
1003				editable.insert(position++, "\n");
1004			}
1005			editable.insert(position, text);
1006			position += text.length();
1007			editable.insert(position++, "\n");
1008			if (position < editable.length() && editable.charAt(position) != '\n') {
1009				editable.insert(position, "\n");
1010			}
1011			binding.textinput.setSelection(position);
1012			binding.textinput.requestFocus();
1013			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1014			if (inputMethodManager != null) {
1015				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1016			}
1017		}
1018	}
1019
1020	private void quoteMessage(Message message) {
1021		quoteText(MessageUtils.prepareQuote(message));
1022	}
1023
1024	@Override
1025	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1026		synchronized (this.messageList) {
1027			super.onCreateContextMenu(menu, v, menuInfo);
1028			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1029			this.selectedMessage = this.messageList.get(acmi.position);
1030			populateContextMenu(menu);
1031		}
1032	}
1033
1034	private void populateContextMenu(ContextMenu menu) {
1035		final Message m = this.selectedMessage;
1036		final Transferable t = m.getTransferable();
1037		Message relevantForCorrection = m;
1038		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1039			relevantForCorrection = relevantForCorrection.next();
1040		}
1041		if (m.getType() != Message.TYPE_STATUS) {
1042
1043			if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1044				return;
1045			}
1046
1047			final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1048			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1049					|| m.getEncryption() == Message.ENCRYPTION_PGP;
1050			final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1051			activity.getMenuInflater().inflate(R.menu.message_context, menu);
1052			menu.setHeaderTitle(R.string.message_options);
1053			MenuItem copyMessage = menu.findItem(R.id.copy_message);
1054			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1055			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1056			MenuItem correctMessage = menu.findItem(R.id.correct_message);
1057			MenuItem shareWith = menu.findItem(R.id.share_with);
1058			MenuItem sendAgain = menu.findItem(R.id.send_again);
1059			MenuItem copyUrl = menu.findItem(R.id.copy_url);
1060			MenuItem downloadFile = menu.findItem(R.id.download_file);
1061			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1062			MenuItem deleteFile = menu.findItem(R.id.delete_file);
1063			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1064			if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1065				copyMessage.setVisible(true);
1066				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
1067			}
1068			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1069				retryDecryption.setVisible(true);
1070			}
1071			if (relevantForCorrection.getType() == Message.TYPE_TEXT
1072					&& relevantForCorrection.isLastCorrectableMessage()
1073					&& m.getConversation() instanceof Conversation
1074					&& (((Conversation) m.getConversation()).getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1075				correctMessage.setVisible(true);
1076			}
1077			if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1078				shareWith.setVisible(true);
1079			}
1080			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1081				sendAgain.setVisible(true);
1082			}
1083			if (m.hasFileOnRemoteHost()
1084					|| m.isGeoUri()
1085					|| m.treatAsDownloadable()
1086					|| (t != null && t instanceof HttpDownloadConnection)) {
1087				copyUrl.setVisible(true);
1088			}
1089			if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1090				downloadFile.setVisible(true);
1091				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1092			}
1093			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1094					|| m.getStatus() == Message.STATUS_UNSEND
1095					|| m.getStatus() == Message.STATUS_OFFERED;
1096			if ((t != null && !deleted) || waitingOfferedSending && m.needsUploading()) {
1097				cancelTransmission.setVisible(true);
1098			}
1099			if (m.isFileOrImage() && !deleted) {
1100				String path = m.getRelativeFilePath();
1101				if (path == null || !path.startsWith("/") || FileBackend.isInDirectoryThatShouldNotBeScanned(getActivity(), path) ) {
1102					deleteFile.setVisible(true);
1103					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1104				}
1105			}
1106			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1107				showErrorMessage.setVisible(true);
1108			}
1109		}
1110	}
1111
1112	@Override
1113	public boolean onContextItemSelected(MenuItem item) {
1114		switch (item.getItemId()) {
1115			case R.id.share_with:
1116				ShareUtil.share(activity, selectedMessage);
1117				return true;
1118			case R.id.correct_message:
1119				correctMessage(selectedMessage);
1120				return true;
1121			case R.id.copy_message:
1122				ShareUtil.copyToClipboard(activity, selectedMessage);
1123				return true;
1124			case R.id.quote_message:
1125				quoteMessage(selectedMessage);
1126				return true;
1127			case R.id.send_again:
1128				resendMessage(selectedMessage);
1129				return true;
1130			case R.id.copy_url:
1131				ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1132				return true;
1133			case R.id.download_file:
1134				startDownloadable(selectedMessage);
1135				return true;
1136			case R.id.cancel_transmission:
1137				cancelTransmission(selectedMessage);
1138				return true;
1139			case R.id.retry_decryption:
1140				retryDecryption(selectedMessage);
1141				return true;
1142			case R.id.delete_file:
1143				deleteFile(selectedMessage);
1144				return true;
1145			case R.id.show_error_message:
1146				showErrorMessage(selectedMessage);
1147				return true;
1148			default:
1149				return super.onContextItemSelected(item);
1150		}
1151	}
1152
1153	@Override
1154	public boolean onOptionsItemSelected(final MenuItem item) {
1155		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1156			return false;
1157		} else if (conversation == null) {
1158			return super.onOptionsItemSelected(item);
1159		}
1160		switch (item.getItemId()) {
1161			case R.id.encryption_choice_axolotl:
1162			case R.id.encryption_choice_pgp:
1163			case R.id.encryption_choice_none:
1164				handleEncryptionSelection(item);
1165				break;
1166			case R.id.attach_choose_picture:
1167			case R.id.attach_take_picture:
1168			case R.id.attach_record_video:
1169			case R.id.attach_choose_file:
1170			case R.id.attach_record_voice:
1171			case R.id.attach_location:
1172				handleAttachmentSelection(item);
1173				break;
1174			case R.id.action_archive:
1175				activity.xmppConnectionService.archiveConversation(conversation);
1176				break;
1177			case R.id.action_contact_details:
1178				activity.switchToContactDetails(conversation.getContact());
1179				break;
1180			case R.id.action_muc_details:
1181				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1182				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1183				intent.putExtra("uuid", conversation.getUuid());
1184				startActivity(intent);
1185				break;
1186			case R.id.action_invite:
1187				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1188				break;
1189			case R.id.action_clear_history:
1190				clearHistoryDialog(conversation);
1191				break;
1192			case R.id.action_mute:
1193				muteConversationDialog(conversation);
1194				break;
1195			case R.id.action_unmute:
1196				unmuteConversation(conversation);
1197				break;
1198			case R.id.action_block:
1199			case R.id.action_unblock:
1200				final Activity activity = getActivity();
1201				if (activity instanceof XmppActivity) {
1202					BlockContactDialog.show((XmppActivity) activity, conversation);
1203				}
1204				break;
1205			default:
1206				break;
1207		}
1208		return super.onOptionsItemSelected(item);
1209	}
1210
1211	private void handleAttachmentSelection(MenuItem item) {
1212		switch (item.getItemId()) {
1213			case R.id.attach_choose_picture:
1214				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1215				break;
1216			case R.id.attach_take_picture:
1217				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1218				break;
1219			case R.id.attach_record_video:
1220				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1221				break;
1222			case R.id.attach_choose_file:
1223				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1224				break;
1225			case R.id.attach_record_voice:
1226				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1227				break;
1228			case R.id.attach_location:
1229				attachFile(ATTACHMENT_CHOICE_LOCATION);
1230				break;
1231		}
1232	}
1233
1234	private void handleEncryptionSelection(MenuItem item) {
1235		if (conversation == null) {
1236			return;
1237		}
1238		switch (item.getItemId()) {
1239			case R.id.encryption_choice_none:
1240				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1241				item.setChecked(true);
1242				break;
1243			case R.id.encryption_choice_pgp:
1244				if (activity.hasPgp()) {
1245					if (conversation.getAccount().getPgpSignature() != null) {
1246						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1247						item.setChecked(true);
1248					} else {
1249						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1250					}
1251				} else {
1252					activity.showInstallPgpDialog();
1253				}
1254				break;
1255			case R.id.encryption_choice_axolotl:
1256				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1257						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1258				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1259				item.setChecked(true);
1260				break;
1261			default:
1262				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1263				break;
1264		}
1265		activity.xmppConnectionService.updateConversation(conversation);
1266		updateChatMsgHint();
1267		getActivity().invalidateOptionsMenu();
1268		activity.refreshUi();
1269	}
1270
1271	public void attachFile(final int attachmentChoice) {
1272		if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1273			if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO)) {
1274				return;
1275			}
1276		} else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1277			if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)) {
1278				return;
1279			}
1280		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1281			if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1282				return;
1283			}
1284		}
1285		try {
1286			activity.getPreferences().edit()
1287					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1288					.apply();
1289		} catch (IllegalArgumentException e) {
1290			//just do not save
1291		}
1292		final int encryption = conversation.getNextEncryption();
1293		final int mode = conversation.getMode();
1294		if (encryption == Message.ENCRYPTION_PGP) {
1295			if (activity.hasPgp()) {
1296				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1297					activity.xmppConnectionService.getPgpEngine().hasKey(
1298							conversation.getContact(),
1299							new UiCallback<Contact>() {
1300
1301								@Override
1302								public void userInputRequried(PendingIntent pi, Contact contact) {
1303									startPendingIntent(pi, attachmentChoice);
1304								}
1305
1306								@Override
1307								public void success(Contact contact) {
1308									selectPresenceToAttachFile(attachmentChoice);
1309								}
1310
1311								@Override
1312								public void error(int error, Contact contact) {
1313									activity.replaceToast(getString(error));
1314								}
1315							});
1316				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1317					if (!conversation.getMucOptions().everybodyHasKeys()) {
1318						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1319						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1320						warning.show();
1321					}
1322					selectPresenceToAttachFile(attachmentChoice);
1323				} else {
1324					showNoPGPKeyDialog(false, (dialog, which) -> {
1325						conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1326						activity.xmppConnectionService.updateConversation(conversation);
1327						selectPresenceToAttachFile(attachmentChoice);
1328					});
1329				}
1330			} else {
1331				activity.showInstallPgpDialog();
1332			}
1333		} else {
1334			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1335				selectPresenceToAttachFile(attachmentChoice);
1336			}
1337		}
1338	}
1339
1340	@Override
1341	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1342		if (grantResults.length > 0)
1343			if (allGranted(grantResults)) {
1344				if (requestCode == REQUEST_START_DOWNLOAD) {
1345					if (this.mPendingDownloadableMessage != null) {
1346						startDownloadable(this.mPendingDownloadableMessage);
1347					}
1348				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1349					if (this.mPendingEditorContent != null) {
1350						attachImageToConversation(this.mPendingEditorContent);
1351					}
1352				} else {
1353					attachFile(requestCode);
1354				}
1355			} else {
1356				@StringRes int res;
1357				String firstDenied = getFirstDenied(grantResults, permissions);
1358				if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1359					res = R.string.no_microphone_permission;
1360				} else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1361					res = R.string.no_camera_permission;
1362				} else {
1363					res = R.string.no_storage_permission;
1364				}
1365				Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1366			}
1367	}
1368
1369	public void startDownloadable(Message message) {
1370		if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1371			this.mPendingDownloadableMessage = message;
1372			return;
1373		}
1374		Transferable transferable = message.getTransferable();
1375		if (transferable != null) {
1376			if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1377				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1378				return;
1379			}
1380			if (!transferable.start()) {
1381				Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1382				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1383			}
1384		} else if (message.treatAsDownloadable()) {
1385			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1386		}
1387	}
1388
1389	@SuppressLint("InflateParams")
1390	protected void clearHistoryDialog(final Conversation conversation) {
1391		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1392		builder.setTitle(getString(R.string.clear_conversation_history));
1393		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1394		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1395		builder.setView(dialogView);
1396		builder.setNegativeButton(getString(R.string.cancel), null);
1397		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1398			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1399			if (endConversationCheckBox.isChecked()) {
1400				this.activity.xmppConnectionService.archiveConversation(conversation);
1401				this.activity.onConversationArchived(conversation);
1402			} else {
1403				activity.onConversationsListItemUpdated();
1404				refresh();
1405			}
1406		});
1407		builder.create().show();
1408	}
1409
1410	protected void muteConversationDialog(final Conversation conversation) {
1411		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1412		builder.setTitle(R.string.disable_notifications);
1413		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1414		final CharSequence[] labels = new CharSequence[durations.length];
1415		for (int i = 0; i < durations.length; ++i) {
1416			if (durations[i] == -1) {
1417				labels[i] = getString(R.string.until_further_notice);
1418			} else {
1419				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1420			}
1421		}
1422		builder.setItems(labels, (dialog, which) -> {
1423			final long till;
1424			if (durations[which] == -1) {
1425				till = Long.MAX_VALUE;
1426			} else {
1427				till = System.currentTimeMillis() + (durations[which] * 1000);
1428			}
1429			conversation.setMutedTill(till);
1430			activity.xmppConnectionService.updateConversation(conversation);
1431			activity.onConversationsListItemUpdated();
1432			refresh();
1433			getActivity().invalidateOptionsMenu();
1434		});
1435		builder.create().show();
1436	}
1437
1438	private boolean hasPermissions(int requestCode, String... permissions) {
1439		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1440			final List<String> missingPermissions = new ArrayList<>();
1441			for(String permission : permissions) {
1442				if (Config.ONLY_INTERNAL_STORAGE && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1443					continue;
1444				}
1445				if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1446					missingPermissions.add(permission);
1447				}
1448			}
1449			if (missingPermissions.size() == 0) {
1450				return true;
1451			} else {
1452				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1453				return false;
1454			}
1455		} else {
1456			return true;
1457		}
1458	}
1459
1460	public void unmuteConversation(final Conversation conversation) {
1461		conversation.setMutedTill(0);
1462		this.activity.xmppConnectionService.updateConversation(conversation);
1463		this.activity.onConversationsListItemUpdated();
1464		refresh();
1465		getActivity().invalidateOptionsMenu();
1466	}
1467
1468	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1469		final Account account = conversation.getAccount();
1470		final PresenceSelector.OnPresenceSelected callback = () -> {
1471			Intent intent = new Intent();
1472			boolean chooser = false;
1473			switch (attachmentChoice) {
1474				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1475					intent.setAction(Intent.ACTION_GET_CONTENT);
1476					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1477					intent.setType("image/*");
1478					chooser = true;
1479					break;
1480				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1481					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1482					break;
1483				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1484					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1485					pendingTakePhotoUri.push(uri);
1486					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1487					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1488					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1489					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1490					break;
1491				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1492					chooser = true;
1493					intent.setType("*/*");
1494					intent.addCategory(Intent.CATEGORY_OPENABLE);
1495					intent.setAction(Intent.ACTION_GET_CONTENT);
1496					break;
1497				case ATTACHMENT_CHOICE_RECORD_VOICE:
1498					intent = new Intent(getActivity(), RecordingActivity.class);
1499					break;
1500				case ATTACHMENT_CHOICE_LOCATION:
1501					intent = new Intent(getActivity(), ShareLocationActivity.class);
1502					break;
1503			}
1504			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1505				if (chooser) {
1506					startActivityForResult(
1507							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1508							attachmentChoice);
1509				} else {
1510					startActivityForResult(intent, attachmentChoice);
1511				}
1512			}
1513		};
1514		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1515			conversation.setNextCounterpart(null);
1516			callback.onPresenceSelected();
1517		} else {
1518			activity.selectPresence(conversation, callback);
1519		}
1520	}
1521
1522	@Override
1523	public void onResume() {
1524		super.onResume();
1525		binding.messagesView.post(this::fireReadEvent);
1526	}
1527
1528	private void fireReadEvent() {
1529		if (activity != null && this.conversation != null) {
1530			String uuid = getLastVisibleMessageUuid();
1531			if (uuid != null) {
1532				activity.onConversationRead(this.conversation, uuid);
1533			}
1534		}
1535	}
1536
1537	private String getLastVisibleMessageUuid() {
1538		if (binding == null) {
1539			return null;
1540		}
1541		synchronized (this.messageList) {
1542			int pos = binding.messagesView.getLastVisiblePosition();
1543			if (pos >= 0) {
1544				Message message = null;
1545				for (int i = pos; i >= 0; --i) {
1546					try {
1547						message = (Message) binding.messagesView.getItemAtPosition(i);
1548					} catch (IndexOutOfBoundsException e) {
1549						//should not happen if we synchronize properly. however if that fails we just gonna try item -1
1550						continue;
1551					}
1552					if (message.getType() != Message.TYPE_STATUS) {
1553						break;
1554					}
1555				}
1556				if (message != null) {
1557					while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1558						message = message.next();
1559					}
1560					return message.getUuid();
1561				}
1562			}
1563		}
1564		return null;
1565	}
1566
1567	private void showErrorMessage(final Message message) {
1568		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1569		builder.setTitle(R.string.error_message);
1570		builder.setMessage(message.getErrorMessage());
1571		builder.setPositiveButton(R.string.confirm, null);
1572		builder.create().show();
1573	}
1574
1575
1576	private void deleteFile(Message message) {
1577		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1578			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1579			activity.onConversationsListItemUpdated();
1580			refresh();
1581		}
1582	}
1583
1584	private void resendMessage(final Message message) {
1585		if (message.isFileOrImage()) {
1586			if (!(message.getConversation() instanceof Conversation)) {
1587				return;
1588			}
1589			final Conversation conversation = (Conversation) message.getConversation();
1590			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1591			if (file.exists()) {
1592				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1593				if (!message.hasFileOnRemoteHost()
1594						&& xmppConnection != null
1595						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1596					activity.selectPresence(conversation, () -> {
1597						message.setCounterpart(conversation.getNextCounterpart());
1598						activity.xmppConnectionService.resendFailedMessages(message);
1599						new Handler().post(() -> {
1600							int size = messageList.size();
1601							this.binding.messagesView.setSelection(size - 1);
1602						});
1603					});
1604					return;
1605				}
1606			} else {
1607				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1608				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1609				activity.onConversationsListItemUpdated();
1610				refresh();
1611				return;
1612			}
1613		}
1614		activity.xmppConnectionService.resendFailedMessages(message);
1615		new Handler().post(() -> {
1616			int size = messageList.size();
1617			this.binding.messagesView.setSelection(size - 1);
1618		});
1619	}
1620
1621	private void cancelTransmission(Message message) {
1622		Transferable transferable = message.getTransferable();
1623		if (transferable != null) {
1624			transferable.cancel();
1625		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1626			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1627		}
1628	}
1629
1630	private void retryDecryption(Message message) {
1631		message.setEncryption(Message.ENCRYPTION_PGP);
1632		activity.onConversationsListItemUpdated();
1633		refresh();
1634		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1635	}
1636
1637	private void privateMessageWith(final Jid counterpart) {
1638		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1639			activity.xmppConnectionService.sendChatState(conversation);
1640		}
1641		this.binding.textinput.setText("");
1642		this.conversation.setNextCounterpart(counterpart);
1643		updateChatMsgHint();
1644		updateSendButton();
1645		updateEditablity();
1646	}
1647
1648	private void correctMessage(Message message) {
1649		while (message.mergeable(message.next())) {
1650			message = message.next();
1651		}
1652		this.conversation.setCorrectingMessage(message);
1653		final Editable editable = binding.textinput.getText();
1654		this.conversation.setDraftMessage(editable.toString());
1655		this.binding.textinput.setText("");
1656		this.binding.textinput.append(message.getBody());
1657
1658	}
1659
1660	private void highlightInConference(String nick) {
1661		final Editable editable = this.binding.textinput.getText();
1662		String oldString = editable.toString().trim();
1663		final int pos = this.binding.textinput.getSelectionStart();
1664		if (oldString.isEmpty() || pos == 0) {
1665			editable.insert(0, nick + ": ");
1666		} else {
1667			final char before = editable.charAt(pos - 1);
1668			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1669			if (before == '\n') {
1670				editable.insert(pos, nick + ": ");
1671			} else {
1672				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1673					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1674						editable.insert(pos - 2, ", " + nick);
1675						return;
1676					}
1677				}
1678				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1679				if (Character.isWhitespace(after)) {
1680					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1681				}
1682			}
1683		}
1684	}
1685
1686	@Override
1687	public void onSaveInstanceState(Bundle outState) {
1688		super.onSaveInstanceState(outState);
1689		if (conversation != null) {
1690			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1691			outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1692			final Uri uri = pendingTakePhotoUri.peek();
1693			if (uri != null) {
1694				outState.putString(STATE_PHOTO_URI, uri.toString());
1695			}
1696			final ScrollState scrollState = getScrollPosition();
1697			if (scrollState != null) {
1698				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1699			}
1700		}
1701	}
1702
1703	@Override
1704	public void onActivityCreated(Bundle savedInstanceState) {
1705		super.onActivityCreated(savedInstanceState);
1706		if (savedInstanceState == null) {
1707			return;
1708		}
1709		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1710		pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1711		if (uuid != null) {
1712			QuickLoader.set(uuid);
1713			this.pendingConversationsUuid.push(uuid);
1714			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1715			if (takePhotoUri != null) {
1716				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1717			}
1718			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1719		}
1720	}
1721
1722	@Override
1723	public void onStart() {
1724		super.onStart();
1725		if (this.reInitRequiredOnStart && this.conversation != null) {
1726			final Bundle extras = pendingExtras.pop();
1727			reInit(this.conversation, extras != null);
1728			if (extras != null) {
1729				processExtras(extras);
1730			}
1731		} else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1732			final String uuid = pendingConversationsUuid.pop();
1733			Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1734			if (uuid != null) {
1735				findAndReInitByUuidOrArchive(uuid);
1736			}
1737		}
1738	}
1739
1740	@Override
1741	public void onStop() {
1742		super.onStop();
1743		final Activity activity = getActivity();
1744		if (activity == null || !activity.isChangingConfigurations()) {
1745			hideSoftKeyboard(activity);
1746			messageListAdapter.stopAudioPlayer();
1747		}
1748		if (this.conversation != null) {
1749			final String msg = this.binding.textinput.getText().toString();
1750			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1751				this.activity.xmppConnectionService.updateConversation(this.conversation);
1752			}
1753			updateChatState(this.conversation, msg);
1754			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1755		}
1756		this.reInitRequiredOnStart = true;
1757	}
1758
1759	private void updateChatState(final Conversation conversation, final String msg) {
1760		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1761		Account.State status = conversation.getAccount().getStatus();
1762		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1763			activity.xmppConnectionService.sendChatState(conversation);
1764		}
1765	}
1766
1767	private void saveMessageDraftStopAudioPlayer() {
1768		final Conversation previousConversation = this.conversation;
1769		if (this.activity == null || this.binding == null || previousConversation == null) {
1770			return;
1771		}
1772		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1773		final String msg = this.binding.textinput.getText().toString();
1774		if (previousConversation.setNextMessage(msg)) {
1775			activity.xmppConnectionService.updateConversation(previousConversation);
1776		}
1777		updateChatState(this.conversation, msg);
1778		messageListAdapter.stopAudioPlayer();
1779	}
1780
1781	public void reInit(Conversation conversation, Bundle extras) {
1782		QuickLoader.set(conversation.getUuid());
1783		this.saveMessageDraftStopAudioPlayer();
1784		if (this.reInit(conversation, extras != null)) {
1785			if (extras != null) {
1786				processExtras(extras);
1787			}
1788			this.reInitRequiredOnStart = false;
1789		} else {
1790			this.reInitRequiredOnStart = true;
1791			pendingExtras.push(extras);
1792		}
1793		resetUnreadMessagesCount();
1794	}
1795
1796	private void reInit(Conversation conversation) {
1797		reInit(conversation, false);
1798	}
1799
1800	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1801		if (conversation == null) {
1802			return false;
1803		}
1804		this.conversation = conversation;
1805		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1806		if (this.activity == null || this.binding == null) {
1807			return false;
1808		}
1809
1810		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1811			activity.onConversationArchived(this.conversation);
1812			return false;
1813		}
1814
1815		stopScrolling();
1816		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1817
1818		if (this.conversation.isRead() && hasExtras) {
1819			Log.d(Config.LOGTAG, "trimming conversation");
1820			this.conversation.trim();
1821		}
1822
1823		setupIme();
1824
1825		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1826
1827		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1828		this.binding.textinput.setKeyboardListener(null);
1829		this.binding.textinput.setText("");
1830		this.binding.textinput.append(this.conversation.getNextMessage());
1831		this.binding.textinput.setKeyboardListener(this);
1832		messageListAdapter.updatePreferences();
1833		refresh(false);
1834		this.conversation.messagesLoaded.set(true);
1835		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1836
1837		if (hasExtras || scrolledToBottomAndNoPending) {
1838			resetUnreadMessagesCount();
1839			synchronized (this.messageList) {
1840				Log.d(Config.LOGTAG, "jump to first unread message");
1841				final Message first = conversation.getFirstUnreadMessage();
1842				final int bottom = Math.max(0, this.messageList.size() - 1);
1843				final int pos;
1844				final boolean jumpToBottom;
1845				if (first == null) {
1846					pos = bottom;
1847					jumpToBottom = true;
1848				} else {
1849					int i = getIndexOf(first.getUuid(), this.messageList);
1850					pos = i < 0 ? bottom : i;
1851					jumpToBottom = false;
1852				}
1853				setSelection(pos, jumpToBottom);
1854			}
1855		}
1856
1857
1858		this.binding.messagesView.post(this::fireReadEvent);
1859		//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
1860		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1861		return true;
1862	}
1863
1864	private void resetUnreadMessagesCount() {
1865		lastMessageUuid = null;
1866		hideUnreadMessagesCount();
1867	}
1868
1869	private void hideUnreadMessagesCount() {
1870		if (this.binding == null) {
1871			return;
1872		}
1873		this.binding.scrollToBottomButton.setEnabled(false);
1874		this.binding.scrollToBottomButton.setVisibility(View.GONE);
1875		this.binding.unreadCountCustomView.setVisibility(View.GONE);
1876	}
1877
1878	private void setSelection(int pos, boolean jumpToBottom) {
1879		ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
1880		this.binding.messagesView.post(() -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
1881		this.binding.messagesView.post(this::fireReadEvent);
1882	}
1883
1884
1885	private boolean scrolledToBottom() {
1886		return this.binding != null && scrolledToBottom(this.binding.messagesView);
1887	}
1888
1889	private void processExtras(Bundle extras) {
1890		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1891		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1892		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1893		final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
1894		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1895		if (nick != null) {
1896			if (pm) {
1897				Jid jid = conversation.getJid();
1898				try {
1899					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1900					privateMessageWith(next);
1901				} catch (final IllegalArgumentException ignored) {
1902					//do nothing
1903				}
1904			} else {
1905				final MucOptions mucOptions = conversation.getMucOptions();
1906				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
1907					highlightInConference(nick);
1908				}
1909			}
1910		} else {
1911			if (text != null && asQuote) {
1912				quoteText(text);
1913			} else {
1914				appendText(text);
1915			}
1916		}
1917		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1918		if (message != null) {
1919			startDownloadable(message);
1920		}
1921	}
1922
1923	private boolean showBlockSubmenu(View view) {
1924		final Jid jid = conversation.getJid();
1925		if (jid.getLocal() == null) {
1926			BlockContactDialog.show(activity, conversation);
1927		} else {
1928			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1929			popupMenu.inflate(R.menu.block);
1930			popupMenu.setOnMenuItemClickListener(menuItem -> {
1931				Blockable blockable;
1932				switch (menuItem.getItemId()) {
1933					case R.id.block_domain:
1934						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
1935						break;
1936					default:
1937						blockable = conversation;
1938				}
1939				BlockContactDialog.show(activity, blockable);
1940				return true;
1941			});
1942			popupMenu.show();
1943		}
1944		return true;
1945	}
1946
1947	private void updateSnackBar(final Conversation conversation) {
1948		final Account account = conversation.getAccount();
1949		final XmppConnection connection = account.getXmppConnection();
1950		final int mode = conversation.getMode();
1951		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1952		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
1953			return;
1954		}
1955		if (account.getStatus() == Account.State.DISABLED) {
1956			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1957		} else if (conversation.isBlocked()) {
1958			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1959		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1960			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1961		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1962			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1963		} else if (mode == Conversation.MODE_MULTI
1964				&& !conversation.getMucOptions().online()
1965				&& account.getStatus() == Account.State.ONLINE) {
1966			switch (conversation.getMucOptions().getError()) {
1967				case NICK_IN_USE:
1968					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1969					break;
1970				case NO_RESPONSE:
1971					showSnackbar(R.string.joining_conference, 0, null);
1972					break;
1973				case SERVER_NOT_FOUND:
1974					if (conversation.receivedMessagesCount() > 0) {
1975						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
1976					} else {
1977						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1978					}
1979					break;
1980				case PASSWORD_REQUIRED:
1981					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1982					break;
1983				case BANNED:
1984					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1985					break;
1986				case MEMBERS_ONLY:
1987					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1988					break;
1989				case KICKED:
1990					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1991					break;
1992				case UNKNOWN:
1993					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
1994					break;
1995				case INVALID_NICK:
1996					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
1997				case SHUTDOWN:
1998					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
1999					break;
2000				default:
2001					hideSnackbar();
2002					break;
2003			}
2004		} else if (account.hasPendingPgpIntent(conversation)) {
2005			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2006		} else if (connection != null
2007				&& connection.getFeatures().blocking()
2008				&& conversation.countMessages() != 0
2009				&& !conversation.isBlocked()
2010				&& conversation.isWithStranger()) {
2011			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2012		} else {
2013			hideSnackbar();
2014		}
2015	}
2016
2017	@Override
2018	public void refresh() {
2019		if (this.binding == null) {
2020			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2021			return;
2022		}
2023		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2024			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2025				activity.onConversationArchived(this.conversation);
2026				return;
2027			}
2028		}
2029		this.refresh(true);
2030	}
2031
2032	private void refresh(boolean notifyConversationRead) {
2033		synchronized (this.messageList) {
2034			if (this.conversation != null) {
2035				conversation.populateWithMessages(this.messageList);
2036				updateSnackBar(conversation);
2037				updateStatusMessages();
2038				if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2039					binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2040					binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2041				}
2042				this.messageListAdapter.notifyDataSetChanged();
2043				updateChatMsgHint();
2044				if (notifyConversationRead && activity != null) {
2045					binding.messagesView.post(this::fireReadEvent);
2046				}
2047				updateSendButton();
2048				updateEditablity();
2049			}
2050		}
2051	}
2052
2053	protected void messageSent() {
2054		mSendingPgpMessage.set(false);
2055		this.binding.textinput.setText("");
2056		if (conversation.setCorrectingMessage(null)) {
2057			this.binding.textinput.append(conversation.getDraftMessage());
2058			conversation.setDraftMessage(null);
2059		}
2060		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2061			activity.xmppConnectionService.updateConversation(conversation);
2062		}
2063		updateChatMsgHint();
2064		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2065		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2066		if (prefScrollToBottom || scrolledToBottom()) {
2067			new Handler().post(() -> {
2068				int size = messageList.size();
2069				this.binding.messagesView.setSelection(size - 1);
2070			});
2071		}
2072	}
2073
2074	public void doneSendingPgpMessage() {
2075		mSendingPgpMessage.set(false);
2076	}
2077
2078	public long getMaxHttpUploadSize(Conversation conversation) {
2079		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2080		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2081	}
2082
2083	private void updateEditablity() {
2084		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2085		this.binding.textinput.setFocusable(canWrite);
2086		this.binding.textinput.setFocusableInTouchMode(canWrite);
2087		this.binding.textSendButton.setEnabled(canWrite);
2088		this.binding.textinput.setCursorVisible(canWrite);
2089	}
2090
2091	public void updateSendButton() {
2092		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2093		final Conversation c = this.conversation;
2094		final Presence.Status status;
2095		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2096		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2097		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2098			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2099				status = Presence.Status.OFFLINE;
2100			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2101				status = c.getContact().getShownStatus();
2102			} else {
2103				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2104			}
2105		} else {
2106			status = Presence.Status.OFFLINE;
2107		}
2108		this.binding.textSendButton.setTag(action);
2109		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2110	}
2111
2112	protected void updateDateSeparators() {
2113		synchronized (this.messageList) {
2114			DateSeparator.addAll(this.messageList);
2115		}
2116	}
2117
2118	protected void updateStatusMessages() {
2119		updateDateSeparators();
2120		synchronized (this.messageList) {
2121			if (showLoadMoreMessages(conversation)) {
2122				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2123			}
2124			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2125				ChatState state = conversation.getIncomingChatState();
2126				if (state == ChatState.COMPOSING) {
2127					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2128				} else if (state == ChatState.PAUSED) {
2129					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2130				} else {
2131					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2132						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2133							return;
2134						} else {
2135							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2136								this.messageList.add(i + 1,
2137										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2138								return;
2139							}
2140						}
2141					}
2142				}
2143			} else {
2144				final MucOptions mucOptions = conversation.getMucOptions();
2145				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2146				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2147				ChatState state = ChatState.COMPOSING;
2148				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2149				if (users.size() == 0) {
2150					state = ChatState.PAUSED;
2151					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2152				}
2153				if (mucOptions.isPrivateAndNonAnonymous()) {
2154					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2155						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2156						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2157						for (ReadByMarker marker : markersForMessage) {
2158							if (!ReadByMarker.contains(marker, addedMarkers)) {
2159								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2160								MucOptions.User user = mucOptions.findUser(marker);
2161								if (user != null && !users.contains(user)) {
2162									shownMarkers.add(user);
2163								}
2164							}
2165						}
2166						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2167						final Message statusMessage;
2168						final int size = shownMarkers.size();
2169						if (size > 1) {
2170							final String body;
2171							if (size <= 4) {
2172								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2173							} else {
2174								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2175							}
2176							statusMessage = Message.createStatusMessage(conversation, body);
2177							statusMessage.setCounterparts(shownMarkers);
2178						} else if (size == 1) {
2179							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2180							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2181							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2182						} else {
2183							statusMessage = null;
2184						}
2185						if (statusMessage != null) {
2186							this.messageList.add(i + 1, statusMessage);
2187						}
2188						addedMarkers.add(markerForSender);
2189						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2190							break;
2191						}
2192					}
2193				}
2194				if (users.size() > 0) {
2195					Message statusMessage;
2196					if (users.size() == 1) {
2197						MucOptions.User user = users.get(0);
2198						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2199						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2200						statusMessage.setTrueCounterpart(user.getRealJid());
2201						statusMessage.setCounterpart(user.getFullJid());
2202					} else {
2203						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2204						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2205						statusMessage.setCounterparts(users);
2206					}
2207					this.messageList.add(statusMessage);
2208				}
2209
2210			}
2211		}
2212	}
2213
2214	private void stopScrolling() {
2215		long now = SystemClock.uptimeMillis();
2216		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2217		binding.messagesView.dispatchTouchEvent(cancel);
2218	}
2219
2220	private boolean showLoadMoreMessages(final Conversation c) {
2221		if (activity == null || activity.xmppConnectionService == null) {
2222			return false;
2223		}
2224		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2225		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2226		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2227	}
2228
2229	private boolean hasMamSupport(final Conversation c) {
2230		if (c.getMode() == Conversation.MODE_SINGLE) {
2231			final XmppConnection connection = c.getAccount().getXmppConnection();
2232			return connection != null && connection.getFeatures().mam();
2233		} else {
2234			return c.getMucOptions().mamSupport();
2235		}
2236	}
2237
2238	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2239		showSnackbar(message, action, clickListener, null);
2240	}
2241
2242	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2243		this.binding.snackbar.setVisibility(View.VISIBLE);
2244		this.binding.snackbar.setOnClickListener(null);
2245		this.binding.snackbarMessage.setText(message);
2246		this.binding.snackbarMessage.setOnClickListener(null);
2247		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2248		if (action != 0) {
2249			this.binding.snackbarAction.setText(action);
2250		}
2251		this.binding.snackbarAction.setOnClickListener(clickListener);
2252		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2253	}
2254
2255	protected void hideSnackbar() {
2256		this.binding.snackbar.setVisibility(View.GONE);
2257	}
2258
2259	protected void sendMessage(Message message) {
2260		activity.xmppConnectionService.sendMessage(message);
2261		messageSent();
2262	}
2263
2264	protected void sendPgpMessage(final Message message) {
2265		final XmppConnectionService xmppService = activity.xmppConnectionService;
2266		final Contact contact = message.getConversation().getContact();
2267		if (!activity.hasPgp()) {
2268			activity.showInstallPgpDialog();
2269			return;
2270		}
2271		if (conversation.getAccount().getPgpSignature() == null) {
2272			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2273			return;
2274		}
2275		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2276			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2277		}
2278		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2279			if (contact.getPgpKeyId() != 0) {
2280				xmppService.getPgpEngine().hasKey(contact,
2281						new UiCallback<Contact>() {
2282
2283							@Override
2284							public void userInputRequried(PendingIntent pi, Contact contact) {
2285								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2286							}
2287
2288							@Override
2289							public void success(Contact contact) {
2290								encryptTextMessage(message);
2291							}
2292
2293							@Override
2294							public void error(int error, Contact contact) {
2295								activity.runOnUiThread(() -> Toast.makeText(activity,
2296										R.string.unable_to_connect_to_keychain,
2297										Toast.LENGTH_SHORT
2298								).show());
2299								mSendingPgpMessage.set(false);
2300							}
2301						});
2302
2303			} else {
2304				showNoPGPKeyDialog(false, (dialog, which) -> {
2305					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2306					xmppService.updateConversation(conversation);
2307					message.setEncryption(Message.ENCRYPTION_NONE);
2308					xmppService.sendMessage(message);
2309					messageSent();
2310				});
2311			}
2312		} else {
2313			if (conversation.getMucOptions().pgpKeysInUse()) {
2314				if (!conversation.getMucOptions().everybodyHasKeys()) {
2315					Toast warning = Toast
2316							.makeText(getActivity(),
2317									R.string.missing_public_keys,
2318									Toast.LENGTH_LONG);
2319					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2320					warning.show();
2321				}
2322				encryptTextMessage(message);
2323			} else {
2324				showNoPGPKeyDialog(true, (dialog, which) -> {
2325					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2326					message.setEncryption(Message.ENCRYPTION_NONE);
2327					xmppService.updateConversation(conversation);
2328					xmppService.sendMessage(message);
2329					messageSent();
2330				});
2331			}
2332		}
2333	}
2334
2335	public void encryptTextMessage(Message message) {
2336		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2337				new UiCallback<Message>() {
2338
2339					@Override
2340					public void userInputRequried(PendingIntent pi, Message message) {
2341						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2342					}
2343
2344					@Override
2345					public void success(Message message) {
2346						//TODO the following two call can be made before the callback
2347						getActivity().runOnUiThread(() -> messageSent());
2348					}
2349
2350					@Override
2351					public void error(final int error, Message message) {
2352						getActivity().runOnUiThread(() -> {
2353							doneSendingPgpMessage();
2354							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2355						});
2356
2357					}
2358				});
2359	}
2360
2361	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2362		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2363		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2364		if (plural) {
2365			builder.setTitle(getString(R.string.no_pgp_keys));
2366			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2367		} else {
2368			builder.setTitle(getString(R.string.no_pgp_key));
2369			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2370		}
2371		builder.setNegativeButton(getString(R.string.cancel), null);
2372		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2373		builder.create().show();
2374	}
2375
2376	public void appendText(String text) {
2377		if (text == null) {
2378			return;
2379		}
2380		String previous = this.binding.textinput.getText().toString();
2381		if (previous.length() != 0 && !previous.endsWith(" ")) {
2382			text = " " + text;
2383		}
2384		this.binding.textinput.append(text);
2385	}
2386
2387	@Override
2388	public boolean onEnterPressed() {
2389		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2390		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2391		if (enterIsSend) {
2392			sendMessage();
2393			return true;
2394		} else {
2395			return false;
2396		}
2397	}
2398
2399	@Override
2400	public void onTypingStarted() {
2401		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2402		if (service == null) {
2403			return;
2404		}
2405		Account.State status = conversation.getAccount().getStatus();
2406		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2407			service.sendChatState(conversation);
2408		}
2409		updateSendButton();
2410	}
2411
2412	@Override
2413	public void onTypingStopped() {
2414		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2415		if (service == null) {
2416			return;
2417		}
2418		Account.State status = conversation.getAccount().getStatus();
2419		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2420			service.sendChatState(conversation);
2421		}
2422	}
2423
2424	@Override
2425	public void onTextDeleted() {
2426		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2427		if (service == null) {
2428			return;
2429		}
2430		Account.State status = conversation.getAccount().getStatus();
2431		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2432			service.sendChatState(conversation);
2433		}
2434		updateSendButton();
2435	}
2436
2437	@Override
2438	public void onTextChanged() {
2439		if (conversation != null && conversation.getCorrectingMessage() != null) {
2440			updateSendButton();
2441		}
2442	}
2443
2444	@Override
2445	public boolean onTabPressed(boolean repeated) {
2446		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2447			return false;
2448		}
2449		if (repeated) {
2450			completionIndex++;
2451		} else {
2452			lastCompletionLength = 0;
2453			completionIndex = 0;
2454			final String content = this.binding.textinput.getText().toString();
2455			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2456			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2457			firstWord = start == 0;
2458			incomplete = content.substring(start, lastCompletionCursor);
2459		}
2460		List<String> completions = new ArrayList<>();
2461		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2462			String name = user.getName();
2463			if (name != null && name.startsWith(incomplete)) {
2464				completions.add(name + (firstWord ? ": " : " "));
2465			}
2466		}
2467		Collections.sort(completions);
2468		if (completions.size() > completionIndex) {
2469			String completion = completions.get(completionIndex).substring(incomplete.length());
2470			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2471			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2472			lastCompletionLength = completion.length();
2473		} else {
2474			completionIndex = -1;
2475			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2476			lastCompletionLength = 0;
2477		}
2478		return true;
2479	}
2480
2481	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2482		try {
2483			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2484		} catch (final SendIntentException ignored) {
2485		}
2486	}
2487
2488	@Override
2489	public void onBackendConnected() {
2490		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2491		String uuid = pendingConversationsUuid.pop();
2492		if (uuid != null) {
2493			if (!findAndReInitByUuidOrArchive(uuid)) {
2494				return;
2495			}
2496		} else {
2497			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2498				clearPending();
2499				activity.onConversationArchived(conversation);
2500				return;
2501			}
2502		}
2503		ActivityResult activityResult = postponedActivityResult.pop();
2504		if (activityResult != null) {
2505			handleActivityResult(activityResult);
2506		}
2507		clearPending();
2508	}
2509
2510	private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2511		Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2512		if (conversation == null) {
2513			clearPending();
2514			activity.onConversationArchived(null);
2515			return false;
2516		}
2517		reInit(conversation);
2518		ScrollState scrollState = pendingScrollState.pop();
2519		String lastMessageUuid = pendingLastMessageUuid.pop();
2520		if (scrollState != null) {
2521			setScrollPosition(scrollState, lastMessageUuid);
2522		}
2523		return true;
2524	}
2525
2526	private void clearPending() {
2527		if (postponedActivityResult.pop() != null) {
2528			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2529		}
2530		pendingScrollState.pop();
2531		if (pendingTakePhotoUri.pop() != null) {
2532			Log.e(Config.LOGTAG, "cleared pending photo uri");
2533		}
2534	}
2535
2536	public Conversation getConversation() {
2537		return conversation;
2538	}
2539}