1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.content.SharedPreferences;
   7import android.content.pm.PackageManager;
   8import android.databinding.DataBindingUtil;
   9import android.net.Uri;
  10import android.os.Build;
  11import android.preference.PreferenceManager;
  12import android.provider.MediaStore;
  13import android.support.annotation.IdRes;
  14import android.support.annotation.NonNull;
  15import android.support.annotation.StringRes;
  16import android.support.v7.app.AlertDialog;
  17import android.app.Fragment;
  18import android.app.PendingIntent;
  19import android.content.ActivityNotFoundException;
  20import android.content.Context;
  21import android.content.DialogInterface;
  22import android.content.Intent;
  23import android.content.IntentSender.SendIntentException;
  24import android.os.Bundle;
  25import android.os.Handler;
  26import android.os.SystemClock;
  27import android.support.v13.view.inputmethod.InputConnectionCompat;
  28import android.support.v13.view.inputmethod.InputContentInfoCompat;
  29import android.text.Editable;
  30import android.util.Log;
  31import android.view.ContextMenu;
  32import android.view.ContextMenu.ContextMenuInfo;
  33import android.view.Gravity;
  34import android.view.LayoutInflater;
  35import android.view.Menu;
  36import android.view.MenuInflater;
  37import android.view.MenuItem;
  38import android.view.MotionEvent;
  39import android.view.View;
  40import android.view.View.OnClickListener;
  41import android.view.ViewGroup;
  42import android.view.inputmethod.EditorInfo;
  43import android.view.inputmethod.InputMethodManager;
  44import android.widget.AbsListView;
  45import android.widget.AbsListView.OnScrollListener;
  46import android.widget.AdapterView;
  47import android.widget.AdapterView.AdapterContextMenuInfo;
  48import android.widget.CheckBox;
  49import android.widget.ListView;
  50import android.widget.PopupMenu;
  51import android.widget.TextView.OnEditorActionListener;
  52import android.widget.Toast;
  53
  54import java.util.ArrayList;
  55import java.util.Arrays;
  56import java.util.Collections;
  57import java.util.HashSet;
  58import java.util.Iterator;
  59import java.util.List;
  60import java.util.Set;
  61import java.util.UUID;
  62import java.util.concurrent.atomic.AtomicBoolean;
  63
  64import eu.siacs.conversations.Config;
  65import eu.siacs.conversations.R;
  66import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  67import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  68import eu.siacs.conversations.databinding.FragmentConversationBinding;
  69import eu.siacs.conversations.entities.Account;
  70import eu.siacs.conversations.entities.Blockable;
  71import eu.siacs.conversations.entities.Contact;
  72import eu.siacs.conversations.entities.Conversation;
  73import eu.siacs.conversations.entities.DownloadableFile;
  74import eu.siacs.conversations.entities.Message;
  75import eu.siacs.conversations.entities.MucOptions;
  76import eu.siacs.conversations.entities.Presence;
  77import eu.siacs.conversations.entities.ReadByMarker;
  78import eu.siacs.conversations.entities.Transferable;
  79import eu.siacs.conversations.entities.TransferablePlaceholder;
  80import eu.siacs.conversations.http.HttpDownloadConnection;
  81import eu.siacs.conversations.persistance.FileBackend;
  82import eu.siacs.conversations.services.MessageArchiveService;
  83import eu.siacs.conversations.services.XmppConnectionService;
  84import eu.siacs.conversations.ui.adapter.MessageAdapter;
  85import eu.siacs.conversations.ui.util.ActivityResult;
  86import eu.siacs.conversations.ui.util.AttachmentTool;
  87import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  88import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.ScrollState;
  92import eu.siacs.conversations.ui.util.SendButtonAction;
  93import eu.siacs.conversations.ui.util.SendButtonTool;
  94import eu.siacs.conversations.ui.widget.EditMessage;
  95import eu.siacs.conversations.utils.MessageUtils;
  96import eu.siacs.conversations.utils.NickValidityChecker;
  97import eu.siacs.conversations.utils.StylingHelper;
  98import eu.siacs.conversations.utils.TimeframeUtils;
  99import eu.siacs.conversations.utils.UIHelper;
 100import eu.siacs.conversations.xmpp.XmppConnection;
 101import eu.siacs.conversations.xmpp.chatstate.ChatState;
 102import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 103import rocks.xmpp.addr.Jid;
 104
 105import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 106import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 107
 108
 109public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 110
 111
 112	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 113	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 114	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 115	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 116	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 117	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 118	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 119	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 120	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 121	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 122	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 123	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 124	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 125	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 126
 127	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 128	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 129	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 130	public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".take_photo_uri";
 131	private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 132
 133	final protected List<Message> messageList = new ArrayList<>();
 134	private String lastMessageUuid = null;
 135	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 136	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 137	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 138	private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 139	private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 140	private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 141	private final PendingItem<Message> pendingMessage = new PendingItem<>();
 142	public Uri mPendingEditorContent = null;
 143	protected MessageAdapter messageListAdapter;
 144	private Conversation conversation;
 145	private FragmentConversationBinding binding;
 146	private Toast messageLoaderToast;
 147	private ConversationsActivity activity;
 148	private boolean reInitRequiredOnStart = true;
 149	private OnClickListener clickToMuc = new OnClickListener() {
 150
 151		@Override
 152		public void onClick(View v) {
 153			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 154			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 155			intent.putExtra("uuid", conversation.getUuid());
 156			startActivity(intent);
 157		}
 158	};
 159	private OnClickListener leaveMuc = new OnClickListener() {
 160
 161		@Override
 162		public void onClick(View v) {
 163			activity.xmppConnectionService.archiveConversation(conversation);
 164		}
 165	};
 166	private OnClickListener joinMuc = new OnClickListener() {
 167
 168		@Override
 169		public void onClick(View v) {
 170			activity.xmppConnectionService.joinMuc(conversation);
 171		}
 172	};
 173	private OnClickListener enterPassword = new OnClickListener() {
 174
 175		@Override
 176		public void onClick(View v) {
 177			MucOptions muc = conversation.getMucOptions();
 178			String password = muc.getPassword();
 179			if (password == null) {
 180				password = "";
 181			}
 182			activity.quickPasswordEdit(password, value -> {
 183				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 184				return null;
 185			});
 186		}
 187	};
 188
 189	private void toggleScrollDownButton() {
 190		toggleScrollDownButton(binding.messagesView);
 191	}
 192
 193	private void toggleScrollDownButton(AbsListView listView) {
 194		if (conversation == null) {
 195			return;
 196		}
 197		if (scrolledToBottom(listView)) {
 198			lastMessageUuid = null;
 199			hideUnreadMessagesCount();
 200		} else {
 201			binding.scrollToBottomButton.setEnabled(true);
 202			binding.scrollToBottomButton.setVisibility(View.VISIBLE);
 203			if (lastMessageUuid == null) {
 204				lastMessageUuid = conversation.getLatestMessage().getUuid();
 205			}
 206			if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 207				binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 208			}
 209		}
 210	}
 211
 212	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 213
 214		@Override
 215		public void onScrollStateChanged(AbsListView view, int scrollState) {
 216			if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 217				fireReadEvent();
 218			}
 219		}
 220
 221		@Override
 222		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 223			toggleScrollDownButton(view);
 224			synchronized (ConversationFragment.this.messageList) {
 225				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 226					long timestamp;
 227					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 228						timestamp = messageList.get(1).getTimeSent();
 229					} else {
 230						timestamp = messageList.get(0).getTimeSent();
 231					}
 232					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 233						@Override
 234						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 235							if (ConversationFragment.this.conversation != conversation) {
 236								conversation.messagesLoaded.set(true);
 237								return;
 238							}
 239							runOnUiThread(() -> {
 240								final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 241								Message message = null;
 242								int childPos;
 243								for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 244									message = messageList.get(oldPosition + childPos);
 245									if (message.getType() != Message.TYPE_STATUS) {
 246										break;
 247									}
 248								}
 249								final String uuid = message != null ? message.getUuid() : null;
 250								View v = binding.messagesView.getChildAt(childPos);
 251								final int pxOffset = (v == null) ? 0 : v.getTop();
 252								ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 253								try {
 254									updateStatusMessages();
 255								} catch (IllegalStateException e) {
 256									Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 257								}
 258								messageListAdapter.notifyDataSetChanged();
 259								int pos = Math.max(getIndexOf(uuid, messageList), 0);
 260								binding.messagesView.setSelectionFromTop(pos, pxOffset);
 261								if (messageLoaderToast != null) {
 262									messageLoaderToast.cancel();
 263								}
 264								conversation.messagesLoaded.set(true);
 265							});
 266						}
 267
 268						@Override
 269						public void informUser(final int resId) {
 270
 271							runOnUiThread(() -> {
 272								if (messageLoaderToast != null) {
 273									messageLoaderToast.cancel();
 274								}
 275								if (ConversationFragment.this.conversation != conversation) {
 276									return;
 277								}
 278								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 279								messageLoaderToast.show();
 280							});
 281
 282						}
 283					});
 284
 285				}
 286			}
 287		}
 288	};
 289	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 290		@Override
 291		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 292			// try to get permission to read the image, if applicable
 293			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 294				try {
 295					inputContentInfo.requestPermission();
 296				} catch (Exception e) {
 297					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 298					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 299					).show();
 300					return false;
 301				}
 302			}
 303			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 304				attachImageToConversation(inputContentInfo.getContentUri());
 305			} else {
 306				mPendingEditorContent = inputContentInfo.getContentUri();
 307			}
 308			return true;
 309		}
 310	};
 311	private Message selectedMessage;
 312	private OnClickListener mEnableAccountListener = new OnClickListener() {
 313		@Override
 314		public void onClick(View v) {
 315			final Account account = conversation == null ? null : conversation.getAccount();
 316			if (account != null) {
 317				account.setOption(Account.OPTION_DISABLED, false);
 318				activity.xmppConnectionService.updateAccount(account);
 319			}
 320		}
 321	};
 322	private OnClickListener mUnblockClickListener = new OnClickListener() {
 323		@Override
 324		public void onClick(final View v) {
 325			v.post(() -> v.setVisibility(View.INVISIBLE));
 326			if (conversation.isDomainBlocked()) {
 327				BlockContactDialog.show(activity, conversation);
 328			} else {
 329				unblockConversation(conversation);
 330			}
 331		}
 332	};
 333	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 334	private OnClickListener mAddBackClickListener = new OnClickListener() {
 335
 336		@Override
 337		public void onClick(View v) {
 338			final Contact contact = conversation == null ? null : conversation.getContact();
 339			if (contact != null) {
 340				activity.xmppConnectionService.createContact(contact, true);
 341				activity.switchToContactDetails(contact);
 342			}
 343		}
 344	};
 345	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 346	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 347		@Override
 348		public void onClick(View v) {
 349			final Contact contact = conversation == null ? null : conversation.getContact();
 350			if (contact != null) {
 351				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 352						activity.xmppConnectionService.getPresenceGenerator()
 353								.sendPresenceUpdatesTo(contact));
 354				hideSnackbar();
 355			}
 356		}
 357	};
 358	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 359
 360		@Override
 361		public void onClick(View v) {
 362			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 363			if (pendingIntent != null) {
 364				try {
 365					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 366							REQUEST_DECRYPT_PGP,
 367							null,
 368							0,
 369							0,
 370							0);
 371				} catch (SendIntentException e) {
 372					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 373					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 374				}
 375			}
 376			updateSnackBar(conversation);
 377		}
 378	};
 379	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 380	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 381		if (actionId == EditorInfo.IME_ACTION_SEND) {
 382			InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 383			if (imm != null && imm.isFullscreenMode()) {
 384				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 385			}
 386			sendMessage();
 387			return true;
 388		} else {
 389			return false;
 390		}
 391	};
 392	private OnClickListener mScrollButtonListener = new OnClickListener() {
 393
 394 		@Override
 395 		public void onClick(View v) {
 396 			stopScrolling();
 397 			setSelection(binding.messagesView.getCount() - 1);
 398		}
 399 	};
 400	private OnClickListener mSendButtonListener = new OnClickListener() {
 401
 402		@Override
 403		public void onClick(View v) {
 404			Object tag = v.getTag();
 405			if (tag instanceof SendButtonAction) {
 406				SendButtonAction action = (SendButtonAction) tag;
 407				switch (action) {
 408					case TAKE_PHOTO:
 409					case RECORD_VIDEO:
 410					case SEND_LOCATION:
 411					case RECORD_VOICE:
 412					case CHOOSE_PICTURE:
 413						attachFile(action.toChoice());
 414						break;
 415					case CANCEL:
 416						if (conversation != null) {
 417							if (conversation.setCorrectingMessage(null)) {
 418								binding.textinput.setText("");
 419								binding.textinput.append(conversation.getDraftMessage());
 420								conversation.setDraftMessage(null);
 421							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 422								conversation.setNextCounterpart(null);
 423							}
 424							updateChatMsgHint();
 425							updateSendButton();
 426							updateEditablity();
 427						}
 428						break;
 429					default:
 430						sendMessage();
 431				}
 432			} else {
 433				sendMessage();
 434			}
 435		}
 436	};
 437	private int completionIndex = 0;
 438	private int lastCompletionLength = 0;
 439	private String incomplete;
 440	private int lastCompletionCursor;
 441	private boolean firstWord = false;
 442	private Message mPendingDownloadableMessage;
 443
 444	private static ConversationFragment findConversationFragment(Activity activity) {
 445		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 446		if (fragment != null && fragment instanceof ConversationFragment) {
 447			return (ConversationFragment) fragment;
 448		}
 449		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 450		if (fragment != null && fragment instanceof ConversationFragment) {
 451			return (ConversationFragment) fragment;
 452		}
 453		return null;
 454	}
 455
 456	public static void startStopPending(Activity activity) {
 457		ConversationFragment fragment = findConversationFragment(activity);
 458		if (fragment != null) {
 459			fragment.messageListAdapter.startStopPending();
 460		}
 461	}
 462
 463	public static void downloadFile(Activity activity, Message message) {
 464		ConversationFragment fragment = findConversationFragment(activity);
 465		if (fragment != null) {
 466			fragment.startDownloadable(message);
 467		}
 468	}
 469
 470	public static void registerPendingMessage(Activity activity, Message message) {
 471		ConversationFragment fragment = findConversationFragment(activity);
 472		if (fragment != null) {
 473			fragment.pendingMessage.push(message);
 474		}
 475	}
 476
 477	public static void openPendingMessage(Activity activity) {
 478		ConversationFragment fragment = findConversationFragment(activity);
 479		if (fragment != null) {
 480			Message message = fragment.pendingMessage.pop();
 481			if (message != null) {
 482				fragment.messageListAdapter.openDownloadable(message);
 483			}
 484		}
 485	}
 486
 487	public static Conversation getConversation(Activity activity) {
 488		return getConversation(activity, R.id.secondary_fragment);
 489	}
 490
 491	private static Conversation getConversation(Activity activity, @IdRes int res) {
 492		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 493		if (fragment != null && fragment instanceof ConversationFragment) {
 494			return ((ConversationFragment) fragment).getConversation();
 495		} else {
 496			return null;
 497		}
 498	}
 499
 500	public static Conversation getConversationReliable(Activity activity) {
 501		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 502		if (conversation != null) {
 503			return conversation;
 504		}
 505		return getConversation(activity, R.id.main_fragment);
 506	}
 507
 508	private static boolean allGranted(int[] grantResults) {
 509		for (int grantResult : grantResults) {
 510			if (grantResult != PackageManager.PERMISSION_GRANTED) {
 511				return false;
 512			}
 513		}
 514		return true;
 515	}
 516
 517	private static String getFirstDenied(int[] grantResults, String[] permissions) {
 518		for (int i = 0; i < grantResults.length; ++i) {
 519			if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 520				return permissions[i];
 521			}
 522		}
 523		return null;
 524	}
 525
 526	private int getIndexOf(String uuid, List<Message> messages) {
 527		if (uuid == null) {
 528			return messages.size() - 1;
 529		}
 530		for (int i = 0; i < messages.size(); ++i) {
 531			if (uuid.equals(messages.get(i).getUuid())) {
 532				return i;
 533			} else {
 534				Message next = messages.get(i);
 535				while (next != null && next.wasMergedIntoPrevious()) {
 536					if (uuid.equals(next.getUuid())) {
 537						return i;
 538					}
 539					next = next.next();
 540				}
 541
 542			}
 543		}
 544		return -1;
 545	}
 546
 547	private ScrollState getScrollPosition() {
 548		final ListView listView = this.binding.messagesView;
 549		if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 550			return null;
 551		} else {
 552			final int pos = listView.getFirstVisiblePosition();
 553			final View view = listView.getChildAt(0);
 554			if (view == null) {
 555				return null;
 556			} else {
 557				return new ScrollState(pos, view.getTop());
 558			}
 559		}
 560	}
 561
 562	private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 563		if (scrollPosition != null) {
 564
 565			this.lastMessageUuid = lastMessageUuid;
 566			if (lastMessageUuid != null) {
 567				binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 568			}
 569			//TODO maybe this needs a 'post'
 570			this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 571			toggleScrollDownButton();
 572		}
 573	}
 574
 575	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 576		if (conversation == null) {
 577			return;
 578		}
 579		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 580
 581			@Override
 582			public void success(Message message) {
 583
 584			}
 585
 586			@Override
 587			public void error(int errorCode, Message object) {
 588				//TODO show possible pgp error
 589			}
 590
 591			@Override
 592			public void userInputRequried(PendingIntent pi, Message object) {
 593
 594			}
 595		});
 596	}
 597
 598	private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 599		if (conversation == null) {
 600			return;
 601		}
 602		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 603		prepareFileToast.show();
 604		activity.delegateUriPermissionsToService(uri);
 605		activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 606			@Override
 607			public void inform(final String text) {
 608				hidePrepareFileToast(prepareFileToast);
 609				runOnUiThread(() -> activity.replaceToast(text));
 610			}
 611
 612			@Override
 613			public void success(Message message) {
 614				runOnUiThread(() -> activity.hideToast());
 615				hidePrepareFileToast(prepareFileToast);
 616			}
 617
 618			@Override
 619			public void error(final int errorCode, Message message) {
 620				hidePrepareFileToast(prepareFileToast);
 621				runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 622
 623			}
 624
 625			@Override
 626			public void userInputRequried(PendingIntent pi, Message message) {
 627				hidePrepareFileToast(prepareFileToast);
 628			}
 629		});
 630	}
 631
 632	public void attachImageToConversation(Uri uri) {
 633		this.attachImageToConversation(conversation, uri);
 634	}
 635
 636	private void attachImageToConversation(Conversation conversation, Uri uri) {
 637		if (conversation == null) {
 638			return;
 639		}
 640		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 641		prepareFileToast.show();
 642		activity.delegateUriPermissionsToService(uri);
 643		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 644				new UiCallback<Message>() {
 645
 646					@Override
 647					public void userInputRequried(PendingIntent pi, Message object) {
 648						hidePrepareFileToast(prepareFileToast);
 649					}
 650
 651					@Override
 652					public void success(Message message) {
 653						hidePrepareFileToast(prepareFileToast);
 654					}
 655
 656					@Override
 657					public void error(final int error, Message message) {
 658						hidePrepareFileToast(prepareFileToast);
 659						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 660					}
 661				});
 662	}
 663
 664	private void hidePrepareFileToast(final Toast prepareFileToast) {
 665		if (prepareFileToast != null && activity != null) {
 666			activity.runOnUiThread(prepareFileToast::cancel);
 667		}
 668	}
 669
 670	private void sendMessage() {
 671		final String body = this.binding.textinput.getText().toString();
 672		final Conversation conversation = this.conversation;
 673		if (body.length() == 0 || conversation == null) {
 674			return;
 675		}
 676		final Message message;
 677		if (conversation.getCorrectingMessage() == null) {
 678			message = new Message(conversation, body, conversation.getNextEncryption());
 679			if (conversation.getMode() == Conversation.MODE_MULTI) {
 680				final Jid nextCounterpart = conversation.getNextCounterpart();
 681				if (nextCounterpart != null) {
 682					message.setCounterpart(nextCounterpart);
 683					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 684					message.setType(Message.TYPE_PRIVATE);
 685				}
 686			}
 687		} else {
 688			message = conversation.getCorrectingMessage();
 689			message.setBody(body);
 690			message.setEdited(message.getUuid());
 691			message.setUuid(UUID.randomUUID().toString());
 692		}
 693		switch (message.getConversation().getNextEncryption()) {
 694			case Message.ENCRYPTION_PGP:
 695				sendPgpMessage(message);
 696				break;
 697			case Message.ENCRYPTION_AXOLOTL:
 698				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 699					sendMessage(message);
 700				}
 701				break;
 702			default:
 703				sendMessage(message);
 704		}
 705	}
 706
 707	protected boolean trustKeysIfNeeded(int requestCode) {
 708		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 709	}
 710
 711	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 712		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 713		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 714		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 715		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 716		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 717		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 718		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 719		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 720			axolotlService.createSessionsIfNeeded(conversation);
 721			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 722			String[] contacts = new String[targets.size()];
 723			for (int i = 0; i < contacts.length; ++i) {
 724				contacts[i] = targets.get(i).toString();
 725			}
 726			intent.putExtra("contacts", contacts);
 727			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 728			intent.putExtra("choice", attachmentChoice);
 729			intent.putExtra("conversation", conversation.getUuid());
 730			startActivityForResult(intent, requestCode);
 731			return true;
 732		} else {
 733			return false;
 734		}
 735	}
 736
 737	public void updateChatMsgHint() {
 738		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 739		if (conversation.getCorrectingMessage() != null) {
 740			this.binding.textinput.setHint(R.string.send_corrected_message);
 741		} else if (multi && conversation.getNextCounterpart() != null) {
 742			this.binding.textinput.setHint(getString(
 743					R.string.send_private_message_to,
 744					conversation.getNextCounterpart().getResource()));
 745		} else if (multi && !conversation.getMucOptions().participating()) {
 746			this.binding.textinput.setHint(R.string.you_are_not_participating);
 747		} else {
 748			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 749			getActivity().invalidateOptionsMenu();
 750		}
 751	}
 752
 753	public void setupIme() {
 754		this.binding.textinput.refreshIme();
 755	}
 756
 757	private void handleActivityResult(ActivityResult activityResult) {
 758		if (activityResult.resultCode == Activity.RESULT_OK) {
 759			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 760		} else {
 761			handleNegativeActivityResult(activityResult.requestCode);
 762		}
 763	}
 764
 765	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 766		switch (requestCode) {
 767			case REQUEST_TRUST_KEYS_TEXT:
 768				final String body = this.binding.textinput.getText().toString();
 769				Message message = new Message(conversation, body, conversation.getNextEncryption());
 770				sendMessage(message);
 771				break;
 772			case REQUEST_TRUST_KEYS_MENU:
 773				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 774				selectPresenceToAttachFile(choice);
 775				break;
 776			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 777				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 778				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 779					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 780					attachImageToConversation(conversation, i.next());
 781				}
 782				break;
 783			case ATTACHMENT_CHOICE_TAKE_PHOTO:
 784				Uri takePhotoUri = pendingTakePhotoUri.pop();
 785				if (takePhotoUri != null) {
 786					attachImageToConversation(conversation, takePhotoUri);
 787				} else {
 788					Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 789				}
 790				break;
 791			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 792			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 793			case ATTACHMENT_CHOICE_RECORD_VOICE:
 794				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 795				String type = data.getType();
 796				final PresenceSelector.OnPresenceSelected callback = () -> {
 797					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 798						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 799						attachFileToConversation(conversation, i.next(), type);
 800					}
 801				};
 802				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 803					callback.onPresenceSelected();
 804				} else {
 805					activity.selectPresence(conversation, callback);
 806				}
 807				break;
 808			case ATTACHMENT_CHOICE_LOCATION:
 809				double latitude = data.getDoubleExtra("latitude", 0);
 810				double longitude = data.getDoubleExtra("longitude", 0);
 811				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 812				attachLocationToConversation(conversation, geo);
 813				break;
 814			case REQUEST_INVITE_TO_CONVERSATION:
 815				XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 816				if (invite != null) {
 817					if (invite.execute(activity)) {
 818						activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 819						activity.mToast.show();
 820					}
 821				}
 822				break;
 823		}
 824	}
 825
 826	private void handleNegativeActivityResult(int requestCode) {
 827		switch (requestCode) {
 828			//nothing to do for now
 829		}
 830	}
 831
 832	@Override
 833	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 834		super.onActivityResult(requestCode, resultCode, data);
 835		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 836		if (activity != null && activity.xmppConnectionService != null) {
 837			handleActivityResult(activityResult);
 838		} else {
 839			this.postponedActivityResult.push(activityResult);
 840		}
 841	}
 842
 843	public void unblockConversation(final Blockable conversation) {
 844		activity.xmppConnectionService.sendUnblockRequest(conversation);
 845	}
 846
 847	@Override
 848	public void onAttach(Activity activity) {
 849		super.onAttach(activity);
 850		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 851		if (activity instanceof ConversationsActivity) {
 852			this.activity = (ConversationsActivity) activity;
 853		} else {
 854			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 855		}
 856	}
 857
 858	@Override
 859	public void onDetach() {
 860		super.onDetach();
 861		this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 862	}
 863
 864	@Override
 865	public void onCreate(Bundle savedInstanceState) {
 866		super.onCreate(savedInstanceState);
 867		setHasOptionsMenu(true);
 868	}
 869
 870	@Override
 871	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 872		menuInflater.inflate(R.menu.fragment_conversation, menu);
 873		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 874		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 875		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 876		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 877		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 878
 879
 880		if (conversation != null) {
 881			if (conversation.getMode() == Conversation.MODE_MULTI) {
 882				menuContactDetails.setVisible(false);
 883				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 884			} else {
 885				menuContactDetails.setVisible(!this.conversation.withSelf());
 886				menuMucDetails.setVisible(false);
 887				final XmppConnectionService service = activity.xmppConnectionService;
 888				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 889			}
 890			if (conversation.isMuted()) {
 891				menuMute.setVisible(false);
 892			} else {
 893				menuUnmute.setVisible(false);
 894			}
 895			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 896			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 897		}
 898		super.onCreateOptionsMenu(menu, menuInflater);
 899	}
 900
 901	@Override
 902	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 903		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 904		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 905
 906		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 907
 908		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 909		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 910
 911		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 912
 913		binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 914		binding.messagesView.setOnScrollListener(mOnScrollListener);
 915		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 916		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 917		messageListAdapter.setOnContactPictureClicked(message -> {
 918			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 919			if (received) {
 920				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 921					Jid user = message.getCounterpart();
 922					if (user != null && !user.isBareJid()) {
 923						final MucOptions mucOptions = message.getConversation().getMucOptions();
 924						if (mucOptions.participating() || message.getConversation().getNextCounterpart() != null) {
 925							if (!mucOptions.isUserInRoom(user)) {
 926								Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 927							}
 928							highlightInConference(user.getResource());
 929						} else {
 930							Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
 931						}
 932					}
 933					return;
 934				} else {
 935					if (!message.getContact().isSelf()) {
 936						String fingerprint;
 937						if (message.getEncryption() == Message.ENCRYPTION_PGP
 938								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 939							fingerprint = "pgp";
 940						} else {
 941							fingerprint = message.getFingerprint();
 942						}
 943						activity.switchToContactDetails(message.getContact(), fingerprint);
 944						return;
 945					}
 946				}
 947			}
 948			Account account = message.getConversation().getAccount();
 949			Intent intent = new Intent(activity, EditAccountActivity.class);
 950			intent.putExtra("jid", account.getJid().asBareJid().toString());
 951			String fingerprint;
 952			if (message.getEncryption() == Message.ENCRYPTION_PGP
 953					|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 954				fingerprint = "pgp";
 955			} else {
 956				fingerprint = message.getFingerprint();
 957			}
 958			intent.putExtra("fingerprint", fingerprint);
 959			startActivity(intent);
 960		});
 961		messageListAdapter.setOnContactPictureLongClicked(message -> {
 962			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 963				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 964					final MucOptions mucOptions = conversation.getMucOptions();
 965					if (!mucOptions.allowPm()) {
 966						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 967						return;
 968					}
 969					Jid user = message.getCounterpart();
 970					if (user != null && !user.isBareJid()) {
 971						if (mucOptions.isUserInRoom(user)) {
 972							privateMessageWith(user);
 973						} else {
 974							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
 975						}
 976					}
 977				}
 978			} else {
 979				activity.showQrCode(conversation.getAccount().getShareableUri());
 980			}
 981		});
 982		messageListAdapter.setOnQuoteListener(this::quoteText);
 983		binding.messagesView.setAdapter(messageListAdapter);
 984
 985		registerForContextMenu(binding.messagesView);
 986
 987		return binding.getRoot();
 988	}
 989
 990	private void quoteText(String text) {
 991		if (binding.textinput.isEnabled()) {
 992			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 993			Editable editable = binding.textinput.getEditableText();
 994			int position = binding.textinput.getSelectionEnd();
 995			if (position == -1) position = editable.length();
 996			if (position > 0 && editable.charAt(position - 1) != '\n') {
 997				editable.insert(position++, "\n");
 998			}
 999			editable.insert(position, text);
1000			position += text.length();
1001			editable.insert(position++, "\n");
1002			if (position < editable.length() && editable.charAt(position) != '\n') {
1003				editable.insert(position, "\n");
1004			}
1005			binding.textinput.setSelection(position);
1006			binding.textinput.requestFocus();
1007			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1008			if (inputMethodManager != null) {
1009				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1010			}
1011		}
1012	}
1013
1014	private static void hideSoftKeyboard(final Activity activity) {
1015		InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
1016		View view = activity.getCurrentFocus();
1017		if (view != null && imm != null) {
1018			imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
1019		}
1020	}
1021
1022	private void quoteMessage(Message message) {
1023		quoteText(MessageUtils.prepareQuote(message));
1024	}
1025
1026	@Override
1027	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1028		synchronized (this.messageList) {
1029			super.onCreateContextMenu(menu, v, menuInfo);
1030			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1031			this.selectedMessage = this.messageList.get(acmi.position);
1032			populateContextMenu(menu);
1033		}
1034	}
1035
1036	private void populateContextMenu(ContextMenu menu) {
1037		final Message m = this.selectedMessage;
1038		final Transferable t = m.getTransferable();
1039		Message relevantForCorrection = m;
1040		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1041			relevantForCorrection = relevantForCorrection.next();
1042		}
1043		if (m.getType() != Message.TYPE_STATUS) {
1044
1045			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
1046					&& m.getType() != Message.TYPE_PRIVATE
1047					&& !(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 (!treatAsFile && !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().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1074				correctMessage.setVisible(true);
1075			}
1076			if ((treatAsFile && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1077				shareWith.setVisible(true);
1078			}
1079			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1080				sendAgain.setVisible(true);
1081			}
1082			if (m.hasFileOnRemoteHost()
1083					|| m.isGeoUri()
1084					|| m.treatAsDownloadable()
1085					|| (t != null && t instanceof HttpDownloadConnection)) {
1086				copyUrl.setVisible(true);
1087			}
1088			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
1089				downloadFile.setVisible(true);
1090				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1091			}
1092			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1093					|| m.getStatus() == Message.STATUS_UNSEND
1094					|| m.getStatus() == Message.STATUS_OFFERED;
1095			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
1096				cancelTransmission.setVisible(true);
1097			}
1098			if (treatAsFile) {
1099				String path = m.getRelativeFilePath();
1100				if (path == null || !path.startsWith("/")) {
1101					deleteFile.setVisible(true);
1102					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1103				}
1104			}
1105			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
1106				showErrorMessage.setVisible(true);
1107			}
1108		}
1109	}
1110
1111	@Override
1112	public boolean onContextItemSelected(MenuItem item) {
1113		switch (item.getItemId()) {
1114			case R.id.share_with:
1115				shareWith(selectedMessage);
1116				return true;
1117			case R.id.correct_message:
1118				correctMessage(selectedMessage);
1119				return true;
1120			case R.id.copy_message:
1121				copyMessage(selectedMessage);
1122				return true;
1123			case R.id.quote_message:
1124				quoteMessage(selectedMessage);
1125				return true;
1126			case R.id.send_again:
1127				resendMessage(selectedMessage);
1128				return true;
1129			case R.id.copy_url:
1130				copyUrl(selectedMessage);
1131				return true;
1132			case R.id.download_file:
1133				startDownloadable(selectedMessage);
1134				return true;
1135			case R.id.cancel_transmission:
1136				cancelTransmission(selectedMessage);
1137				return true;
1138			case R.id.retry_decryption:
1139				retryDecryption(selectedMessage);
1140				return true;
1141			case R.id.delete_file:
1142				deleteFile(selectedMessage);
1143				return true;
1144			case R.id.show_error_message:
1145				showErrorMessage(selectedMessage);
1146				return true;
1147			default:
1148				return super.onContextItemSelected(item);
1149		}
1150	}
1151
1152	@Override
1153	public boolean onOptionsItemSelected(final MenuItem item) {
1154		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1155			return false;
1156		} else if (conversation == null) {
1157			return super.onOptionsItemSelected(item);
1158		}
1159		switch (item.getItemId()) {
1160			case R.id.encryption_choice_axolotl:
1161			case R.id.encryption_choice_pgp:
1162			case R.id.encryption_choice_none:
1163				handleEncryptionSelection(item);
1164				break;
1165			case R.id.attach_choose_picture:
1166			case R.id.attach_take_picture:
1167			case R.id.attach_record_video:
1168			case R.id.attach_choose_file:
1169			case R.id.attach_record_voice:
1170			case R.id.attach_location:
1171				handleAttachmentSelection(item);
1172				break;
1173			case R.id.action_archive:
1174				activity.xmppConnectionService.archiveConversation(conversation);
1175				break;
1176			case R.id.action_contact_details:
1177				activity.switchToContactDetails(conversation.getContact());
1178				break;
1179			case R.id.action_muc_details:
1180				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1181				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1182				intent.putExtra("uuid", conversation.getUuid());
1183				startActivity(intent);
1184				break;
1185			case R.id.action_invite:
1186				startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1187				break;
1188			case R.id.action_clear_history:
1189				clearHistoryDialog(conversation);
1190				break;
1191			case R.id.action_mute:
1192				muteConversationDialog(conversation);
1193				break;
1194			case R.id.action_unmute:
1195				unmuteConversation(conversation);
1196				break;
1197			case R.id.action_block:
1198			case R.id.action_unblock:
1199				final Activity activity = getActivity();
1200				if (activity instanceof XmppActivity) {
1201					BlockContactDialog.show((XmppActivity) activity, conversation);
1202				}
1203				break;
1204			default:
1205				break;
1206		}
1207		return super.onOptionsItemSelected(item);
1208	}
1209
1210	private void handleAttachmentSelection(MenuItem item) {
1211		switch (item.getItemId()) {
1212			case R.id.attach_choose_picture:
1213				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1214				break;
1215			case R.id.attach_take_picture:
1216				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1217				break;
1218			case R.id.attach_record_video:
1219				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1220				break;
1221			case R.id.attach_choose_file:
1222				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1223				break;
1224			case R.id.attach_record_voice:
1225				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1226				break;
1227			case R.id.attach_location:
1228				attachFile(ATTACHMENT_CHOICE_LOCATION);
1229				break;
1230		}
1231	}
1232
1233	private void handleEncryptionSelection(MenuItem item) {
1234		if (conversation == null) {
1235			return;
1236		}
1237		switch (item.getItemId()) {
1238			case R.id.encryption_choice_none:
1239				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1240				item.setChecked(true);
1241				break;
1242			case R.id.encryption_choice_pgp:
1243				if (activity.hasPgp()) {
1244					if (conversation.getAccount().getPgpSignature() != null) {
1245						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1246						item.setChecked(true);
1247					} else {
1248						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1249					}
1250				} else {
1251					activity.showInstallPgpDialog();
1252				}
1253				break;
1254			case R.id.encryption_choice_axolotl:
1255				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1256						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1257				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1258				item.setChecked(true);
1259				break;
1260			default:
1261				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1262				break;
1263		}
1264		activity.xmppConnectionService.updateConversation(conversation);
1265		updateChatMsgHint();
1266		getActivity().invalidateOptionsMenu();
1267		activity.refreshUi();
1268	}
1269
1270	public void attachFile(final int attachmentChoice) {
1271		if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1272			if (!hasStorageAndCameraPermission(attachmentChoice)) {
1273				return;
1274			}
1275		} else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1276			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1277				return;
1278			}
1279		}
1280		try {
1281			activity.getPreferences().edit()
1282					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1283					.apply();
1284		} catch (IllegalArgumentException e) {
1285			//just do not save
1286		}
1287		final int encryption = conversation.getNextEncryption();
1288		final int mode = conversation.getMode();
1289		if (encryption == Message.ENCRYPTION_PGP) {
1290			if (activity.hasPgp()) {
1291				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1292					activity.xmppConnectionService.getPgpEngine().hasKey(
1293							conversation.getContact(),
1294							new UiCallback<Contact>() {
1295
1296								@Override
1297								public void userInputRequried(PendingIntent pi, Contact contact) {
1298									startPendingIntent(pi, attachmentChoice);
1299								}
1300
1301								@Override
1302								public void success(Contact contact) {
1303									selectPresenceToAttachFile(attachmentChoice);
1304								}
1305
1306								@Override
1307								public void error(int error, Contact contact) {
1308									activity.replaceToast(getString(error));
1309								}
1310							});
1311				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1312					if (!conversation.getMucOptions().everybodyHasKeys()) {
1313						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1314						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1315						warning.show();
1316					}
1317					selectPresenceToAttachFile(attachmentChoice);
1318				} else {
1319					showNoPGPKeyDialog(false, (dialog, which) -> {
1320						conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1321						activity.xmppConnectionService.updateConversation(conversation);
1322						selectPresenceToAttachFile(attachmentChoice);
1323					});
1324				}
1325			} else {
1326				activity.showInstallPgpDialog();
1327			}
1328		} else {
1329			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1330				selectPresenceToAttachFile(attachmentChoice);
1331			}
1332		}
1333	}
1334
1335	@Override
1336	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1337		if (grantResults.length > 0)
1338			if (allGranted(grantResults)) {
1339				if (requestCode == REQUEST_START_DOWNLOAD) {
1340					if (this.mPendingDownloadableMessage != null) {
1341						startDownloadable(this.mPendingDownloadableMessage);
1342					}
1343				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1344					if (this.mPendingEditorContent != null) {
1345						attachImageToConversation(this.mPendingEditorContent);
1346					}
1347				} else {
1348					attachFile(requestCode);
1349				}
1350			} else {
1351				@StringRes int res;
1352				if (Manifest.permission.CAMERA.equals(getFirstDenied(grantResults, permissions))) {
1353					res = R.string.no_camera_permission;
1354				} else {
1355					res = R.string.no_storage_permission;
1356				}
1357				Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1358			}
1359	}
1360
1361	public void startDownloadable(Message message) {
1362		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1363			this.mPendingDownloadableMessage = message;
1364			return;
1365		}
1366		Transferable transferable = message.getTransferable();
1367		if (transferable != null) {
1368			if (transferable instanceof TransferablePlaceholder && message.treatAsDownloadable()) {
1369				activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1370				return;
1371			}
1372			if (!transferable.start()) {
1373				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1374			}
1375		} else if (message.treatAsDownloadable()) {
1376			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1377		}
1378	}
1379
1380	@SuppressLint("InflateParams")
1381	protected void clearHistoryDialog(final Conversation conversation) {
1382		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1383		builder.setTitle(getString(R.string.clear_conversation_history));
1384		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1385		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1386		builder.setView(dialogView);
1387		builder.setNegativeButton(getString(R.string.cancel), null);
1388		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1389			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1390			if (endConversationCheckBox.isChecked()) {
1391				this.activity.xmppConnectionService.archiveConversation(conversation);
1392				this.activity.onConversationArchived(conversation);
1393			} else {
1394				activity.onConversationsListItemUpdated();
1395				refresh();
1396			}
1397		});
1398		builder.create().show();
1399	}
1400
1401	protected void muteConversationDialog(final Conversation conversation) {
1402		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1403		builder.setTitle(R.string.disable_notifications);
1404		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1405		final CharSequence[] labels = new CharSequence[durations.length];
1406		for (int i = 0; i < durations.length; ++i) {
1407			if (durations[i] == -1) {
1408				labels[i] = getString(R.string.until_further_notice);
1409			} else {
1410				labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1411			}
1412		}
1413		builder.setItems(labels, (dialog, which) -> {
1414			final long till;
1415			if (durations[which] == -1) {
1416				till = Long.MAX_VALUE;
1417			} else {
1418				till = System.currentTimeMillis() + (durations[which] * 1000);
1419			}
1420			conversation.setMutedTill(till);
1421			activity.xmppConnectionService.updateConversation(conversation);
1422			activity.onConversationsListItemUpdated();
1423			refresh();
1424			getActivity().invalidateOptionsMenu();
1425		});
1426		builder.create().show();
1427	}
1428
1429	private boolean hasStoragePermission(int requestCode) {
1430		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1431			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1432				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1433				return false;
1434			} else {
1435				return true;
1436			}
1437		} else {
1438			return true;
1439		}
1440	}
1441
1442	private boolean hasStorageAndCameraPermission(int requestCode) {
1443		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1444			List<String> missingPermissions = new ArrayList<>();
1445			if (!Config.ONLY_INTERNAL_STORAGE && activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1446				missingPermissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
1447			}
1448			if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
1449				missingPermissions.add(Manifest.permission.CAMERA);
1450			}
1451			if (missingPermissions.size() == 0) {
1452				return true;
1453			} else {
1454				requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1455				return false;
1456			}
1457		} else {
1458			return true;
1459		}
1460	}
1461
1462	public void unmuteConversation(final Conversation conversation) {
1463		conversation.setMutedTill(0);
1464		this.activity.xmppConnectionService.updateConversation(conversation);
1465		this.activity.onConversationsListItemUpdated();
1466		refresh();
1467		getActivity().invalidateOptionsMenu();
1468	}
1469
1470	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1471		final Account account = conversation.getAccount();
1472		final PresenceSelector.OnPresenceSelected callback = () -> {
1473			Intent intent = new Intent();
1474			boolean chooser = false;
1475			String fallbackPackageId = null;
1476			switch (attachmentChoice) {
1477				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1478					intent.setAction(Intent.ACTION_GET_CONTENT);
1479					intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1480					intent.setType("image/*");
1481					chooser = true;
1482					break;
1483				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1484					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1485					break;
1486				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1487					final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1488					pendingTakePhotoUri.push(uri);
1489					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1490					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1491					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1492					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1493					break;
1494				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1495					chooser = true;
1496					intent.setType("*/*");
1497					intent.addCategory(Intent.CATEGORY_OPENABLE);
1498					intent.setAction(Intent.ACTION_GET_CONTENT);
1499					break;
1500				case ATTACHMENT_CHOICE_RECORD_VOICE:
1501					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1502					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1503					break;
1504				case ATTACHMENT_CHOICE_LOCATION:
1505					intent.setAction("eu.siacs.conversations.location.request");
1506					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1507					break;
1508			}
1509			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1510				if (chooser) {
1511					startActivityForResult(
1512							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1513							attachmentChoice);
1514				} else {
1515					startActivityForResult(intent, attachmentChoice);
1516				}
1517			} else if (fallbackPackageId != null) {
1518				startActivity(getInstallApkIntent(fallbackPackageId));
1519			}
1520		};
1521		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1522			conversation.setNextCounterpart(null);
1523			callback.onPresenceSelected();
1524		} else {
1525			activity.selectPresence(conversation, callback);
1526		}
1527	}
1528
1529	private Intent getInstallApkIntent(final String packageId) {
1530		Intent intent = new Intent(Intent.ACTION_VIEW);
1531		intent.setData(Uri.parse("market://details?id=" + packageId));
1532		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1533			return intent;
1534		} else {
1535			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1536			return intent;
1537		}
1538	}
1539
1540	@Override
1541	public void onResume() {
1542		new Handler().post(() -> {
1543			final Activity activity = getActivity();
1544			if (activity == null) {
1545				return;
1546			}
1547			final PackageManager packageManager = activity.getPackageManager();
1548			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1549			getActivity().invalidateOptionsMenu();
1550		});
1551		super.onResume();
1552		binding.messagesView.post(this::fireReadEvent);
1553	}
1554
1555	private void fireReadEvent() {
1556		if (activity != null && this.conversation != null) {
1557			String uuid = getLastVisibleMessageUuid();
1558			if (uuid != null) {
1559				activity.onConversationRead(this.conversation, uuid);
1560			}
1561		}
1562	}
1563
1564	private String getLastVisibleMessageUuid() {
1565		if (binding == null) {
1566			return null;
1567		}
1568		int pos = binding.messagesView.getLastVisiblePosition();
1569		if (pos >= 0) {
1570			Message message = (Message) binding.messagesView.getItemAtPosition(pos);
1571			if (message != null) {
1572				while(message.next() != null && message.next().wasMergedIntoPrevious()) {
1573					message = message.next();
1574				}
1575				return message.getUuid();
1576			}
1577		}
1578		return null;
1579	}
1580
1581	private void showErrorMessage(final Message message) {
1582		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1583		builder.setTitle(R.string.error_message);
1584		builder.setMessage(message.getErrorMessage());
1585		builder.setPositiveButton(R.string.confirm, null);
1586		builder.create().show();
1587	}
1588
1589	private void shareWith(Message message) {
1590		Intent shareIntent = new Intent();
1591		shareIntent.setAction(Intent.ACTION_SEND);
1592		if (message.isGeoUri()) {
1593			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1594			shareIntent.setType("text/plain");
1595		} else if (!message.isFileOrImage()) {
1596			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1597			shareIntent.setType("text/plain");
1598		} else {
1599			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1600			try {
1601				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1602			} catch (SecurityException e) {
1603				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1604				return;
1605			}
1606			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1607			String mime = message.getMimeType();
1608			if (mime == null) {
1609				mime = "*/*";
1610			}
1611			shareIntent.setType(mime);
1612		}
1613		try {
1614			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1615		} catch (ActivityNotFoundException e) {
1616			//This should happen only on faulty androids because normally chooser is always available
1617			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1618		}
1619	}
1620
1621	private void copyMessage(Message message) {
1622		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1623			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1624		}
1625	}
1626
1627	private void deleteFile(Message message) {
1628		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1629			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1630			activity.onConversationsListItemUpdated();
1631			refresh();
1632		}
1633	}
1634
1635	private void resendMessage(final Message message) {
1636		if (message.isFileOrImage()) {
1637			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1638			if (file.exists()) {
1639				final Conversation conversation = message.getConversation();
1640				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1641				if (!message.hasFileOnRemoteHost()
1642						&& xmppConnection != null
1643						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1644					activity.selectPresence(conversation, () -> {
1645						message.setCounterpart(conversation.getNextCounterpart());
1646						activity.xmppConnectionService.resendFailedMessages(message);
1647						new Handler().post(() -> {
1648							int size = messageList.size();
1649							this.binding.messagesView.setSelection(size - 1);
1650						});
1651					});
1652					return;
1653				}
1654			} else {
1655				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1656				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1657				activity.onConversationsListItemUpdated();
1658				refresh();
1659				return;
1660			}
1661		}
1662		activity.xmppConnectionService.resendFailedMessages(message);
1663		new Handler().post(() -> {
1664			int size = messageList.size();
1665			this.binding.messagesView.setSelection(size - 1);
1666		});
1667	}
1668
1669	private void copyUrl(Message message) {
1670		final String url;
1671		final int resId;
1672		if (message.isGeoUri()) {
1673			resId = R.string.location;
1674			url = message.getBody();
1675		} else if (message.hasFileOnRemoteHost()) {
1676			resId = R.string.file_url;
1677			url = message.getFileParams().url.toString();
1678		} else {
1679			url = message.getBody().trim();
1680			resId = R.string.file_url;
1681		}
1682		if (activity.copyTextToClipboard(url, resId)) {
1683			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1684		}
1685	}
1686
1687	private void cancelTransmission(Message message) {
1688		Transferable transferable = message.getTransferable();
1689		if (transferable != null) {
1690			transferable.cancel();
1691		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1692			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1693		}
1694	}
1695
1696	private void retryDecryption(Message message) {
1697		message.setEncryption(Message.ENCRYPTION_PGP);
1698		activity.onConversationsListItemUpdated();
1699		refresh();
1700		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1701	}
1702
1703	private void privateMessageWith(final Jid counterpart) {
1704		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1705			activity.xmppConnectionService.sendChatState(conversation);
1706		}
1707		this.binding.textinput.setText("");
1708		this.conversation.setNextCounterpart(counterpart);
1709		updateChatMsgHint();
1710		updateSendButton();
1711		updateEditablity();
1712	}
1713
1714	private void correctMessage(Message message) {
1715		while (message.mergeable(message.next())) {
1716			message = message.next();
1717		}
1718		this.conversation.setCorrectingMessage(message);
1719		final Editable editable = binding.textinput.getText();
1720		this.conversation.setDraftMessage(editable.toString());
1721		this.binding.textinput.setText("");
1722		this.binding.textinput.append(message.getBody());
1723
1724	}
1725
1726	private void highlightInConference(String nick) {
1727		final Editable editable = this.binding.textinput.getText();
1728		String oldString = editable.toString().trim();
1729		final int pos = this.binding.textinput.getSelectionStart();
1730		if (oldString.isEmpty() || pos == 0) {
1731			editable.insert(0, nick + ": ");
1732		} else {
1733			final char before = editable.charAt(pos - 1);
1734			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1735			if (before == '\n') {
1736				editable.insert(pos, nick + ": ");
1737			} else {
1738				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1739					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1740						editable.insert(pos - 2, ", " + nick);
1741						return;
1742					}
1743				}
1744				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1745				if (Character.isWhitespace(after)) {
1746					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1747				}
1748			}
1749		}
1750	}
1751
1752	@Override
1753	public void onSaveInstanceState(Bundle outState) {
1754		super.onSaveInstanceState(outState);
1755		if (conversation != null) {
1756			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1757			outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1758			final Uri uri = pendingTakePhotoUri.peek();
1759			if (uri != null) {
1760				outState.putString(STATE_PHOTO_URI, uri.toString());
1761			}
1762			final ScrollState scrollState = getScrollPosition();
1763			if (scrollState != null) {
1764				outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1765			}
1766		}
1767	}
1768
1769	@Override
1770	public void onActivityCreated(Bundle savedInstanceState) {
1771		super.onActivityCreated(savedInstanceState);
1772		if (savedInstanceState == null) {
1773			return;
1774		}
1775		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1776		pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1777		if (uuid != null) {
1778			this.pendingConversationsUuid.push(uuid);
1779			String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1780			if (takePhotoUri != null) {
1781				pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1782			}
1783			pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1784		}
1785	}
1786
1787	@Override
1788	public void onStart() {
1789		super.onStart();
1790		if (this.reInitRequiredOnStart) {
1791			final Bundle extras = pendingExtras.pop();
1792			reInit(conversation, extras != null);
1793			if (extras != null) {
1794				processExtras(extras);
1795			}
1796		} else {
1797			Log.d(Config.LOGTAG, "skipped reinit on start");
1798		}
1799	}
1800
1801	@Override
1802	public void onStop() {
1803		super.onStop();
1804		final Activity activity = getActivity();
1805		if (activity == null || !activity.isChangingConfigurations()) {
1806			hideSoftKeyboard(activity);
1807			messageListAdapter.stopAudioPlayer();
1808		}
1809		if (this.conversation != null) {
1810			final String msg = this.binding.textinput.getText().toString();
1811			if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && this.conversation.setNextMessage(msg)) {
1812				this.activity.xmppConnectionService.updateConversation(this.conversation);
1813			}
1814			updateChatState(this.conversation, msg);
1815			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1816		}
1817		this.reInitRequiredOnStart = true;
1818	}
1819
1820	private void updateChatState(final Conversation conversation, final String msg) {
1821		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1822		Account.State status = conversation.getAccount().getStatus();
1823		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1824			activity.xmppConnectionService.sendChatState(conversation);
1825		}
1826	}
1827
1828	private void saveMessageDraftStopAudioPlayer() {
1829		final Conversation previousConversation = this.conversation;
1830		if (this.activity == null || this.binding == null || previousConversation == null) {
1831			return;
1832		}
1833		Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1834		final String msg = this.binding.textinput.getText().toString();
1835		if (previousConversation.setNextMessage(msg)) {
1836			activity.xmppConnectionService.updateConversation(previousConversation);
1837		}
1838		updateChatState(this.conversation, msg);
1839		messageListAdapter.stopAudioPlayer();
1840	}
1841
1842	public void reInit(Conversation conversation, Bundle extras) {
1843		this.saveMessageDraftStopAudioPlayer();
1844		if (this.reInit(conversation, extras != null)) {
1845			if (extras != null) {
1846				processExtras(extras);
1847			}
1848			this.reInitRequiredOnStart = false;
1849		} else {
1850			this.reInitRequiredOnStart = true;
1851			pendingExtras.push(extras);
1852		}
1853		updateUnreadMessagesCount();
1854	}
1855
1856	private void reInit(Conversation conversation) {
1857		reInit(conversation, false);
1858	}
1859
1860	private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1861		if (conversation == null) {
1862			return false;
1863		}
1864		this.conversation = conversation;
1865		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1866		if (this.activity == null || this.binding == null) {
1867			return false;
1868		}
1869
1870		if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1871			activity.onConversationArchived(this.conversation);
1872			return false;
1873		}
1874
1875		stopScrolling();
1876		Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1877
1878		if (this.conversation.isRead() && hasExtras) {
1879			Log.d(Config.LOGTAG, "trimming conversation");
1880			this.conversation.trim();
1881		}
1882
1883		setupIme();
1884
1885		final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1886
1887		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1888		this.binding.textinput.setKeyboardListener(null);
1889		this.binding.textinput.setText("");
1890		this.binding.textinput.append(this.conversation.getNextMessage());
1891		this.binding.textinput.setKeyboardListener(this);
1892		messageListAdapter.updatePreferences();
1893		refresh(false);
1894		this.conversation.messagesLoaded.set(true);
1895		Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1896
1897		if (hasExtras || scrolledToBottomAndNoPending) {
1898			synchronized (this.messageList) {
1899				Log.d(Config.LOGTAG, "jump to first unread message");
1900				final Message first = conversation.getFirstUnreadMessage();
1901				final int bottom = Math.max(0, this.messageList.size() - 1);
1902				final int pos;
1903				if (first == null) {
1904					pos = bottom;
1905				} else {
1906					int i = getIndexOf(first.getUuid(), this.messageList);
1907					pos = i < 0 ? bottom : i;
1908				}
1909				setSelection(pos);
1910			}
1911		}
1912
1913
1914		this.binding.messagesView.post(this::fireReadEvent);
1915		//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
1916		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1917		return true;
1918	}
1919
1920	private void updateUnreadMessagesCount() {
1921		lastMessageUuid = null;
1922		hideUnreadMessagesCount();
1923	}
1924
1925	private void hideUnreadMessagesCount() {
1926		if (this.binding == null) {
1927			return;
1928		}
1929		this.binding.scrollToBottomButton.setEnabled(false);
1930		this.binding.scrollToBottomButton.setVisibility(View.GONE);
1931		this.binding.unreadCountCustomView.setVisibility(View.GONE);
1932	}
1933
1934	private void setSelection(int pos) {
1935		this.binding.messagesView.setSelection(pos);
1936		this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
1937	}
1938
1939	private boolean scrolledToBottom() {
1940		if (this.binding == null) {
1941			return false;
1942		}
1943		return scrolledToBottom(this.binding.messagesView);
1944	}
1945
1946	private static boolean scrolledToBottom(AbsListView listView) {
1947		if (listView.getLastVisiblePosition() == listView.getCount() - 1) {
1948			final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
1949			return lastChild != null && lastChild.getBottom() <= listView.getHeight();
1950		} else {
1951			return false;
1952		}
1953	}
1954
1955	private void processExtras(Bundle extras) {
1956		final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
1957		final String text = extras.getString(ConversationsActivity.EXTRA_TEXT);
1958		final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
1959		final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1960		if (nick != null) {
1961			if (pm) {
1962				Jid jid = conversation.getJid();
1963				try {
1964					Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
1965					privateMessageWith(next);
1966				} catch (final IllegalArgumentException ignored) {
1967					//do nothing
1968				}
1969			} else {
1970				final MucOptions mucOptions = conversation.getMucOptions();
1971				if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
1972					highlightInConference(nick);
1973				}
1974			}
1975		} else {
1976			appendText(text);
1977		}
1978		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1979		if (message != null) {
1980			startDownloadable(message);
1981		}
1982	}
1983
1984	private boolean showBlockSubmenu(View view) {
1985		final Jid jid = conversation.getJid();
1986		if (jid.getLocal() == null) {
1987			BlockContactDialog.show(activity, conversation);
1988		} else {
1989			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1990			popupMenu.inflate(R.menu.block);
1991			popupMenu.setOnMenuItemClickListener(menuItem -> {
1992				Blockable blockable;
1993				switch (menuItem.getItemId()) {
1994					case R.id.block_domain:
1995						blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
1996						break;
1997					default:
1998						blockable = conversation;
1999				}
2000				BlockContactDialog.show(activity, blockable);
2001				return true;
2002			});
2003			popupMenu.show();
2004		}
2005		return true;
2006	}
2007
2008	private void updateSnackBar(final Conversation conversation) {
2009		final Account account = conversation.getAccount();
2010		final XmppConnection connection = account.getXmppConnection();
2011		final int mode = conversation.getMode();
2012		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2013		if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2014			return;
2015		}
2016		if (account.getStatus() == Account.State.DISABLED) {
2017			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2018		} else if (conversation.isBlocked()) {
2019			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2020		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2021			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2022		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2023			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2024		} else if (mode == Conversation.MODE_MULTI
2025				&& !conversation.getMucOptions().online()
2026				&& account.getStatus() == Account.State.ONLINE) {
2027			switch (conversation.getMucOptions().getError()) {
2028				case NICK_IN_USE:
2029					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2030					break;
2031				case NO_RESPONSE:
2032					showSnackbar(R.string.joining_conference, 0, null);
2033					break;
2034				case SERVER_NOT_FOUND:
2035					if (conversation.receivedMessagesCount() > 0) {
2036						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2037					} else {
2038						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2039					}
2040					break;
2041				case PASSWORD_REQUIRED:
2042					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2043					break;
2044				case BANNED:
2045					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2046					break;
2047				case MEMBERS_ONLY:
2048					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2049					break;
2050				case KICKED:
2051					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2052					break;
2053				case UNKNOWN:
2054					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2055					break;
2056				case INVALID_NICK:
2057					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2058				case SHUTDOWN:
2059					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2060					break;
2061				default:
2062					hideSnackbar();
2063					break;
2064			}
2065		} else if (account.hasPendingPgpIntent(conversation)) {
2066			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2067		} else if (connection != null
2068				&& connection.getFeatures().blocking()
2069				&& conversation.countMessages() != 0
2070				&& !conversation.isBlocked()
2071				&& conversation.isWithStranger()) {
2072			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2073		} else {
2074			hideSnackbar();
2075		}
2076	}
2077
2078	@Override
2079	public void refresh() {
2080		if (this.binding == null) {
2081			Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2082			return;
2083		}
2084		if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2085			if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2086				activity.onConversationArchived(this.conversation);
2087				return;
2088			}
2089		}
2090		this.refresh(true);
2091	}
2092
2093	private void refresh(boolean notifyConversationRead) {
2094		synchronized (this.messageList) {
2095			if (this.conversation != null) {
2096				conversation.populateWithMessages(this.messageList);
2097				updateSnackBar(conversation);
2098				updateStatusMessages();
2099				if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2100					binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2101					binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2102				}
2103				this.messageListAdapter.notifyDataSetChanged();
2104				updateChatMsgHint();
2105				if (notifyConversationRead && activity != null) {
2106					binding.messagesView.post(this::fireReadEvent);
2107				}
2108				updateSendButton();
2109				updateEditablity();
2110			}
2111		}
2112	}
2113
2114	protected void messageSent() {
2115		mSendingPgpMessage.set(false);
2116		this.binding.textinput.setText("");
2117		if (conversation.setCorrectingMessage(null)) {
2118			this.binding.textinput.append(conversation.getDraftMessage());
2119			conversation.setDraftMessage(null);
2120		}
2121		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
2122			activity.xmppConnectionService.updateConversation(conversation);
2123		}
2124		updateChatMsgHint();
2125		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2126		final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2127		if (prefScrollToBottom || scrolledToBottom()) {
2128			new Handler().post(() -> {
2129				int size = messageList.size();
2130				this.binding.messagesView.setSelection(size - 1);
2131			});
2132		}
2133	}
2134
2135	public void doneSendingPgpMessage() {
2136		mSendingPgpMessage.set(false);
2137	}
2138
2139	public long getMaxHttpUploadSize(Conversation conversation) {
2140		final XmppConnection connection = conversation.getAccount().getXmppConnection();
2141		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2142	}
2143
2144	private void updateEditablity() {
2145		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2146		this.binding.textinput.setFocusable(canWrite);
2147		this.binding.textinput.setFocusableInTouchMode(canWrite);
2148		this.binding.textSendButton.setEnabled(canWrite);
2149		this.binding.textinput.setCursorVisible(canWrite);
2150	}
2151
2152	public void updateSendButton() {
2153		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2154		final Conversation c = this.conversation;
2155		final Presence.Status status;
2156		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2157		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
2158		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2159			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2160				status = Presence.Status.OFFLINE;
2161			} else if (c.getMode() == Conversation.MODE_SINGLE) {
2162				status = c.getContact().getShownStatus();
2163			} else {
2164				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2165			}
2166		} else {
2167			status = Presence.Status.OFFLINE;
2168		}
2169		this.binding.textSendButton.setTag(action);
2170		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2171	}
2172
2173	protected void updateDateSeparators() {
2174		synchronized (this.messageList) {
2175			for (int i = 0; i < this.messageList.size(); ++i) {
2176				final Message current = this.messageList.get(i);
2177				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
2178					this.messageList.add(i, Message.createDateSeparator(current));
2179					i++;
2180				}
2181			}
2182		}
2183	}
2184
2185	protected void updateStatusMessages() {
2186		updateDateSeparators();
2187		synchronized (this.messageList) {
2188			if (showLoadMoreMessages(conversation)) {
2189				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2190			}
2191			if (conversation.getMode() == Conversation.MODE_SINGLE) {
2192				ChatState state = conversation.getIncomingChatState();
2193				if (state == ChatState.COMPOSING) {
2194					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2195				} else if (state == ChatState.PAUSED) {
2196					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2197				} else {
2198					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2199						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
2200							return;
2201						} else {
2202							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
2203								this.messageList.add(i + 1,
2204										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2205								return;
2206							}
2207						}
2208					}
2209				}
2210			} else {
2211				final MucOptions mucOptions = conversation.getMucOptions();
2212				final List<MucOptions.User> allUsers = mucOptions.getUsers();
2213				final Set<ReadByMarker> addedMarkers = new HashSet<>();
2214				ChatState state = ChatState.COMPOSING;
2215				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2216				if (users.size() == 0) {
2217					state = ChatState.PAUSED;
2218					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2219				}
2220				if (mucOptions.isPrivateAndNonAnonymous()) {
2221					for (int i = this.messageList.size() - 1; i >= 0; --i) {
2222						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2223						final List<MucOptions.User> shownMarkers = new ArrayList<>();
2224						for (ReadByMarker marker : markersForMessage) {
2225							if (!ReadByMarker.contains(marker, addedMarkers)) {
2226								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2227								MucOptions.User user = mucOptions.findUser(marker);
2228								if (user != null && !users.contains(user)) {
2229									shownMarkers.add(user);
2230								}
2231							}
2232						}
2233						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2234						final Message statusMessage;
2235						final int size = shownMarkers.size();
2236						if (size > 1) {
2237							final String body;
2238							if (size <= 4) {
2239								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2240							} else {
2241								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2242							}
2243							statusMessage = Message.createStatusMessage(conversation, body);
2244							statusMessage.setCounterparts(shownMarkers);
2245						} else if (size == 1) {
2246							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2247							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2248							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2249						} else {
2250							statusMessage = null;
2251						}
2252						if (statusMessage != null) {
2253							this.messageList.add(i + 1, statusMessage);
2254						}
2255						addedMarkers.add(markerForSender);
2256						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2257							break;
2258						}
2259					}
2260				}
2261				if (users.size() > 0) {
2262					Message statusMessage;
2263					if (users.size() == 1) {
2264						MucOptions.User user = users.get(0);
2265						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2266						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2267						statusMessage.setTrueCounterpart(user.getRealJid());
2268						statusMessage.setCounterpart(user.getFullJid());
2269					} else {
2270						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2271						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2272						statusMessage.setCounterparts(users);
2273					}
2274					this.messageList.add(statusMessage);
2275				}
2276
2277			}
2278		}
2279	}
2280
2281	private void stopScrolling() {
2282		long now = SystemClock.uptimeMillis();
2283		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2284		binding.messagesView.dispatchTouchEvent(cancel);
2285	}
2286
2287	private boolean showLoadMoreMessages(final Conversation c) {
2288		if (activity == null || activity.xmppConnectionService == null) {
2289			return false;
2290		}
2291		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2292		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2293		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2294	}
2295
2296	private boolean hasMamSupport(final Conversation c) {
2297		if (c.getMode() == Conversation.MODE_SINGLE) {
2298			final XmppConnection connection = c.getAccount().getXmppConnection();
2299			return connection != null && connection.getFeatures().mam();
2300		} else {
2301			return c.getMucOptions().mamSupport();
2302		}
2303	}
2304
2305	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2306		showSnackbar(message, action, clickListener, null);
2307	}
2308
2309	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2310		this.binding.snackbar.setVisibility(View.VISIBLE);
2311		this.binding.snackbar.setOnClickListener(null);
2312		this.binding.snackbarMessage.setText(message);
2313		this.binding.snackbarMessage.setOnClickListener(null);
2314		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2315		if (action != 0) {
2316			this.binding.snackbarAction.setText(action);
2317		}
2318		this.binding.snackbarAction.setOnClickListener(clickListener);
2319		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2320	}
2321
2322	protected void hideSnackbar() {
2323		this.binding.snackbar.setVisibility(View.GONE);
2324	}
2325
2326	protected void sendMessage(Message message) {
2327		activity.xmppConnectionService.sendMessage(message);
2328		messageSent();
2329	}
2330
2331	protected void sendPgpMessage(final Message message) {
2332		final XmppConnectionService xmppService = activity.xmppConnectionService;
2333		final Contact contact = message.getConversation().getContact();
2334		if (!activity.hasPgp()) {
2335			activity.showInstallPgpDialog();
2336			return;
2337		}
2338		if (conversation.getAccount().getPgpSignature() == null) {
2339			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2340			return;
2341		}
2342		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2343			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2344		}
2345		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2346			if (contact.getPgpKeyId() != 0) {
2347				xmppService.getPgpEngine().hasKey(contact,
2348						new UiCallback<Contact>() {
2349
2350							@Override
2351							public void userInputRequried(PendingIntent pi, Contact contact) {
2352								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2353							}
2354
2355							@Override
2356							public void success(Contact contact) {
2357								encryptTextMessage(message);
2358							}
2359
2360							@Override
2361							public void error(int error, Contact contact) {
2362								activity.runOnUiThread(() -> Toast.makeText(activity,
2363										R.string.unable_to_connect_to_keychain,
2364										Toast.LENGTH_SHORT
2365								).show());
2366								mSendingPgpMessage.set(false);
2367							}
2368						});
2369
2370			} else {
2371				showNoPGPKeyDialog(false, (dialog, which) -> {
2372					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2373					xmppService.updateConversation(conversation);
2374					message.setEncryption(Message.ENCRYPTION_NONE);
2375					xmppService.sendMessage(message);
2376					messageSent();
2377				});
2378			}
2379		} else {
2380			if (conversation.getMucOptions().pgpKeysInUse()) {
2381				if (!conversation.getMucOptions().everybodyHasKeys()) {
2382					Toast warning = Toast
2383							.makeText(getActivity(),
2384									R.string.missing_public_keys,
2385									Toast.LENGTH_LONG);
2386					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2387					warning.show();
2388				}
2389				encryptTextMessage(message);
2390			} else {
2391				showNoPGPKeyDialog(true, (dialog, which) -> {
2392					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2393					message.setEncryption(Message.ENCRYPTION_NONE);
2394					xmppService.updateConversation(conversation);
2395					xmppService.sendMessage(message);
2396					messageSent();
2397				});
2398			}
2399		}
2400	}
2401
2402	public void encryptTextMessage(Message message) {
2403		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2404				new UiCallback<Message>() {
2405
2406					@Override
2407					public void userInputRequried(PendingIntent pi, Message message) {
2408						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2409					}
2410
2411					@Override
2412					public void success(Message message) {
2413						//TODO the following two call can be made before the callback
2414						getActivity().runOnUiThread(() -> messageSent());
2415					}
2416
2417					@Override
2418					public void error(final int error, Message message) {
2419						getActivity().runOnUiThread(() -> {
2420							doneSendingPgpMessage();
2421							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2422						});
2423
2424					}
2425				});
2426	}
2427
2428	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2429		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2430		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2431		if (plural) {
2432			builder.setTitle(getString(R.string.no_pgp_keys));
2433			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2434		} else {
2435			builder.setTitle(getString(R.string.no_pgp_key));
2436			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2437		}
2438		builder.setNegativeButton(getString(R.string.cancel), null);
2439		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2440		builder.create().show();
2441	}
2442
2443	public void appendText(String text) {
2444		if (text == null) {
2445			return;
2446		}
2447		String previous = this.binding.textinput.getText().toString();
2448		if (previous.length() != 0 && !previous.endsWith(" ")) {
2449			text = " " + text;
2450		}
2451		this.binding.textinput.append(text);
2452	}
2453
2454	@Override
2455	public boolean onEnterPressed() {
2456		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2457		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2458		if (enterIsSend) {
2459			sendMessage();
2460			return true;
2461		} else {
2462			return false;
2463		}
2464	}
2465
2466	@Override
2467	public void onTypingStarted() {
2468		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2469		if (service == null) {
2470			return;
2471		}
2472		Account.State status = conversation.getAccount().getStatus();
2473		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2474			service.sendChatState(conversation);
2475		}
2476		updateSendButton();
2477	}
2478
2479	@Override
2480	public void onTypingStopped() {
2481		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2482		if (service == null) {
2483			return;
2484		}
2485		Account.State status = conversation.getAccount().getStatus();
2486		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2487			service.sendChatState(conversation);
2488		}
2489	}
2490
2491	@Override
2492	public void onTextDeleted() {
2493		final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2494		if (service == null) {
2495			return;
2496		}
2497		Account.State status = conversation.getAccount().getStatus();
2498		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2499			service.sendChatState(conversation);
2500		}
2501		updateSendButton();
2502	}
2503
2504	@Override
2505	public void onTextChanged() {
2506		if (conversation != null && conversation.getCorrectingMessage() != null) {
2507			updateSendButton();
2508		}
2509	}
2510
2511	@Override
2512	public boolean onTabPressed(boolean repeated) {
2513		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2514			return false;
2515		}
2516		if (repeated) {
2517			completionIndex++;
2518		} else {
2519			lastCompletionLength = 0;
2520			completionIndex = 0;
2521			final String content = this.binding.textinput.getText().toString();
2522			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2523			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2524			firstWord = start == 0;
2525			incomplete = content.substring(start, lastCompletionCursor);
2526		}
2527		List<String> completions = new ArrayList<>();
2528		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2529			String name = user.getName();
2530			if (name != null && name.startsWith(incomplete)) {
2531				completions.add(name + (firstWord ? ": " : " "));
2532			}
2533		}
2534		Collections.sort(completions);
2535		if (completions.size() > completionIndex) {
2536			String completion = completions.get(completionIndex).substring(incomplete.length());
2537			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2538			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2539			lastCompletionLength = completion.length();
2540		} else {
2541			completionIndex = -1;
2542			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2543			lastCompletionLength = 0;
2544		}
2545		return true;
2546	}
2547
2548	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2549		try {
2550			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2551		} catch (final SendIntentException ignored) {
2552		}
2553	}
2554
2555	@Override
2556	public void onBackendConnected() {
2557		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2558		String uuid = pendingConversationsUuid.pop();
2559		if (uuid != null) {
2560			Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2561			if (conversation == null) {
2562				clearPending();
2563				activity.onConversationArchived(null);
2564				return;
2565			}
2566			reInit(conversation);
2567			ScrollState scrollState = pendingScrollState.pop();
2568			String lastMessageUuid = pendingLastMessageUuid.pop();
2569			if (scrollState != null) {
2570				setScrollPosition(scrollState, lastMessageUuid);
2571			}
2572		} else {
2573			if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2574				clearPending();
2575				activity.onConversationArchived(conversation);
2576				return;
2577			}
2578		}
2579		ActivityResult activityResult = postponedActivityResult.pop();
2580		if (activityResult != null) {
2581			handleActivityResult(activityResult);
2582		}
2583		clearPending();
2584	}
2585
2586	private void clearPending() {
2587		if (postponedActivityResult.pop() != null) {
2588			Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2589		}
2590		pendingScrollState.pop();
2591		if (pendingTakePhotoUri.pop() != null) {
2592			Log.e(Config.LOGTAG, "cleared pending photo uri");
2593		}
2594	}
2595
2596	public Conversation getConversation() {
2597		return conversation;
2598	}
2599}