ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import android.app.Activity;
   4import android.app.AlertDialog;
   5import android.app.Fragment;
   6import android.app.PendingIntent;
   7import android.content.ActivityNotFoundException;
   8import android.content.Context;
   9import android.content.DialogInterface;
  10import android.content.Intent;
  11import android.content.IntentSender;
  12import android.content.IntentSender.SendIntentException;
  13import android.os.Bundle;
  14import android.support.annotation.Nullable;
  15import android.text.InputType;
  16import android.view.ContextMenu;
  17import android.view.ContextMenu.ContextMenuInfo;
  18import android.view.Gravity;
  19import android.view.KeyEvent;
  20import android.view.LayoutInflater;
  21import android.view.MenuItem;
  22import android.view.View;
  23import android.view.View.OnClickListener;
  24import android.view.ViewGroup;
  25import android.view.inputmethod.EditorInfo;
  26import android.view.inputmethod.InputMethodManager;
  27import android.widget.AbsListView;
  28import android.widget.AbsListView.OnScrollListener;
  29import android.widget.AdapterView;
  30import android.widget.AdapterView.AdapterContextMenuInfo;
  31import android.widget.ImageButton;
  32import android.widget.ListView;
  33import android.widget.RelativeLayout;
  34import android.widget.TextView;
  35import android.widget.TextView.OnEditorActionListener;
  36import android.widget.Toast;
  37
  38import net.java.otr4j.session.SessionStatus;
  39
  40import java.util.ArrayList;
  41import java.util.Collections;
  42import java.util.List;
  43
  44import eu.siacs.conversations.Config;
  45import eu.siacs.conversations.R;
  46import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  47import eu.siacs.conversations.entities.Account;
  48import eu.siacs.conversations.entities.Contact;
  49import eu.siacs.conversations.entities.Conversation;
  50import eu.siacs.conversations.entities.DownloadableFile;
  51import eu.siacs.conversations.entities.Message;
  52import eu.siacs.conversations.entities.MucOptions;
  53import eu.siacs.conversations.entities.Presence;
  54import eu.siacs.conversations.entities.Presences;
  55import eu.siacs.conversations.entities.Transferable;
  56import eu.siacs.conversations.entities.TransferablePlaceholder;
  57import eu.siacs.conversations.services.XmppConnectionService;
  58import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
  59import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
  60import eu.siacs.conversations.ui.adapter.MessageAdapter;
  61import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
  62import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
  63import eu.siacs.conversations.utils.GeoHelper;
  64import eu.siacs.conversations.utils.UIHelper;
  65import eu.siacs.conversations.xmpp.chatstate.ChatState;
  66import eu.siacs.conversations.xmpp.jid.Jid;
  67
  68public class ConversationFragment extends Fragment implements EditMessage.KeyboardListener {
  69
  70	protected Conversation conversation;
  71	private OnClickListener leaveMuc = new OnClickListener() {
  72
  73		@Override
  74		public void onClick(View v) {
  75			activity.endConversation(conversation);
  76		}
  77	};
  78	private OnClickListener joinMuc = new OnClickListener() {
  79
  80		@Override
  81		public void onClick(View v) {
  82			activity.xmppConnectionService.joinMuc(conversation);
  83		}
  84	};
  85	private OnClickListener enterPassword = new OnClickListener() {
  86
  87		@Override
  88		public void onClick(View v) {
  89			MucOptions muc = conversation.getMucOptions();
  90			String password = muc.getPassword();
  91			if (password == null) {
  92				password = "";
  93			}
  94			activity.quickPasswordEdit(password, new OnValueEdited() {
  95
  96				@Override
  97				public void onValueEdited(String value) {
  98					activity.xmppConnectionService.providePasswordForMuc(
  99							conversation, value);
 100				}
 101			});
 102		}
 103	};
 104	protected ListView messagesView;
 105	final protected List<Message> messageList = new ArrayList<>();
 106	protected MessageAdapter messageListAdapter;
 107	private EditMessage mEditMessage;
 108	private ImageButton mSendButton;
 109	private RelativeLayout snackbar;
 110	private TextView snackbarMessage;
 111	private TextView snackbarAction;
 112	private boolean messagesLoaded = true;
 113	private Toast messageLoaderToast;
 114
 115	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 116
 117		@Override
 118		public void onScrollStateChanged(AbsListView view, int scrollState) {
 119			// TODO Auto-generated method stub
 120
 121		}
 122
 123		private int getIndexOf(String uuid, List<Message> messages) {
 124			if (uuid == null) {
 125				return 0;
 126			}
 127			for(int i = 0; i < messages.size(); ++i) {
 128				if (uuid.equals(messages.get(i).getUuid())) {
 129					return i;
 130				} else {
 131					Message next = messages.get(i);
 132					while(next != null && next.wasMergedIntoPrevious()) {
 133						if (uuid.equals(next.getUuid())) {
 134							return i;
 135						}
 136						next = next.next();
 137					}
 138
 139				}
 140			}
 141			return 0;
 142		}
 143
 144		@Override
 145		public void onScroll(AbsListView view, int firstVisibleItem,
 146							 int visibleItemCount, int totalItemCount) {
 147			synchronized (ConversationFragment.this.messageList) {
 148				if (firstVisibleItem < 5 && messagesLoaded && messageList.size() > 0) {
 149					long timestamp = ConversationFragment.this.messageList.get(0).getTimeSent();
 150					messagesLoaded = false;
 151					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 152						@Override
 153						public void onMoreMessagesLoaded(final int c, Conversation conversation) {
 154							if (ConversationFragment.this.conversation != conversation) {
 155								return;
 156							}
 157							activity.runOnUiThread(new Runnable() {
 158								@Override
 159								public void run() {
 160									final int oldPosition = messagesView.getFirstVisiblePosition();
 161									Message message = messageList.get(oldPosition);
 162									String uuid = message != null ? message.getUuid() : null;
 163									View v = messagesView.getChildAt(0);
 164									final int pxOffset = (v == null) ? 0 : v.getTop();
 165									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 166									updateStatusMessages();
 167									messageListAdapter.notifyDataSetChanged();
 168									int pos = getIndexOf(uuid,messageList);
 169									messagesView.setSelectionFromTop(pos, pxOffset);
 170									messagesLoaded = true;
 171									if (messageLoaderToast != null) {
 172										messageLoaderToast.cancel();
 173									}
 174								}
 175							});
 176						}
 177
 178						@Override
 179						public void informUser(final int resId) {
 180
 181							activity.runOnUiThread(new Runnable() {
 182								@Override
 183								public void run() {
 184									if (messageLoaderToast != null) {
 185										messageLoaderToast.cancel();
 186									}
 187									if (ConversationFragment.this.conversation != conversation) {
 188										return;
 189									}
 190									messageLoaderToast = Toast.makeText(activity, resId, Toast.LENGTH_LONG);
 191									messageLoaderToast.show();
 192								}
 193							});
 194
 195						}
 196					});
 197
 198				}
 199			}
 200		}
 201	};
 202	private final int KEYCHAIN_UNLOCK_NOT_REQUIRED = 0;
 203	private final int KEYCHAIN_UNLOCK_REQUIRED = 1;
 204	private final int KEYCHAIN_UNLOCK_PENDING = 2;
 205	private int keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 206	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 207
 208		@Override
 209		public void onClick(View v) {
 210			if (keychainUnlock == KEYCHAIN_UNLOCK_REQUIRED
 211					&& activity.hasPgp() && !conversation.getAccount().getPgpDecryptionService().isRunning()) {
 212				keychainUnlock = KEYCHAIN_UNLOCK_PENDING;
 213				updateSnackBar(conversation);
 214				Message message = getLastPgpDecryptableMessage();
 215				if (message != null) {
 216					activity.xmppConnectionService.getPgpEngine().decrypt(message, new UiCallback<Message>() {
 217						@Override
 218						public void success(Message object) {
 219							conversation.getAccount().getPgpDecryptionService().onKeychainUnlocked();
 220							keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 221						}
 222
 223						@Override
 224						public void error(int errorCode, Message object) {
 225							keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 226						}
 227
 228						@Override
 229						public void userInputRequried(PendingIntent pi, Message object) {
 230							try {
 231								activity.startIntentSenderForResult(pi.getIntentSender(),
 232										ConversationActivity.REQUEST_DECRYPT_PGP, null, 0, 0, 0);
 233							} catch (SendIntentException e) {
 234								keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 235								updatePgpMessages();
 236							}
 237						}
 238					});
 239				}
 240			} else {
 241				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 242				updatePgpMessages();
 243			}
 244		}
 245	};
 246	protected OnClickListener clickToVerify = new OnClickListener() {
 247
 248		@Override
 249		public void onClick(View v) {
 250			activity.verifyOtrSessionDialog(conversation, v);
 251		}
 252	};
 253	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
 254
 255		@Override
 256		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 257			if (actionId == EditorInfo.IME_ACTION_SEND) {
 258				InputMethodManager imm = (InputMethodManager) v.getContext()
 259						.getSystemService(Context.INPUT_METHOD_SERVICE);
 260				if (imm.isFullscreenMode()) {
 261					imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 262				}
 263				sendMessage();
 264				return true;
 265			} else {
 266				return false;
 267			}
 268		}
 269	};
 270	private OnClickListener mSendButtonListener = new OnClickListener() {
 271
 272		@Override
 273		public void onClick(View v) {
 274			Object tag = v.getTag();
 275			if (tag instanceof SendButtonAction) {
 276				SendButtonAction action = (SendButtonAction) tag;
 277				switch (action) {
 278					case TAKE_PHOTO:
 279						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_TAKE_PHOTO);
 280						break;
 281					case SEND_LOCATION:
 282						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_LOCATION);
 283						break;
 284					case RECORD_VOICE:
 285						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_RECORD_VOICE);
 286						break;
 287					case CHOOSE_PICTURE:
 288						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_CHOOSE_IMAGE);
 289						break;
 290					case CANCEL:
 291						if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 292							conversation.setNextCounterpart(null);
 293							updateChatMsgHint();
 294							updateSendButton();
 295						}
 296						break;
 297					default:
 298						sendMessage();
 299				}
 300			} else {
 301				sendMessage();
 302			}
 303		}
 304	};
 305	private OnClickListener clickToMuc = new OnClickListener() {
 306
 307		@Override
 308		public void onClick(View v) {
 309			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 310			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 311			intent.putExtra("uuid", conversation.getUuid());
 312			startActivity(intent);
 313		}
 314	};
 315	private ConversationActivity activity;
 316	private Message selectedMessage;
 317
 318	public void setMessagesLoaded() {
 319		this.messagesLoaded = true;
 320	}
 321
 322	private void sendMessage() {
 323		final String body = mEditMessage.getText().toString();
 324		if (body.length() == 0 || this.conversation == null) {
 325			return;
 326		}
 327		Message message = new Message(conversation, body, conversation.getNextEncryption());
 328		if (conversation.getMode() == Conversation.MODE_MULTI) {
 329			if (conversation.getNextCounterpart() != null) {
 330				message.setCounterpart(conversation.getNextCounterpart());
 331				message.setType(Message.TYPE_PRIVATE);
 332			}
 333		}
 334		switch (conversation.getNextEncryption()) {
 335			case Message.ENCRYPTION_OTR:
 336				sendOtrMessage(message);
 337				break;
 338			case Message.ENCRYPTION_PGP:
 339				sendPgpMessage(message);
 340				break;
 341			case Message.ENCRYPTION_AXOLOTL:
 342				if(!activity.trustKeysIfNeeded(ConversationActivity.REQUEST_TRUST_KEYS_TEXT)) {
 343					sendAxolotlMessage(message);
 344				}
 345				break;
 346			default:
 347				sendPlainTextMessage(message);
 348		}
 349	}
 350
 351	public void updateChatMsgHint() {
 352		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 353		if (multi && conversation.getNextCounterpart() != null) {
 354			this.mEditMessage.setHint(getString(
 355					R.string.send_private_message_to,
 356					conversation.getNextCounterpart().getResourcepart()));
 357		} else if (multi && !conversation.getMucOptions().participating()) {
 358			this.mEditMessage.setHint(R.string.you_are_not_participating);
 359		} else {
 360			switch (conversation.getNextEncryption()) {
 361				case Message.ENCRYPTION_NONE:
 362					mEditMessage
 363							.setHint(getString(R.string.send_unencrypted_message));
 364					break;
 365				case Message.ENCRYPTION_OTR:
 366					mEditMessage.setHint(getString(R.string.send_otr_message));
 367					break;
 368				case Message.ENCRYPTION_AXOLOTL:
 369					AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 370					if (axolotlService != null && axolotlService.trustedSessionVerified(conversation)) {
 371						mEditMessage.setHint(getString(R.string.send_omemo_x509_message));
 372					} else {
 373						mEditMessage.setHint(getString(R.string.send_omemo_message));
 374					}
 375					break;
 376				case Message.ENCRYPTION_PGP:
 377					mEditMessage.setHint(getString(R.string.send_pgp_message));
 378					break;
 379				default:
 380					break;
 381			}
 382			getActivity().invalidateOptionsMenu();
 383		}
 384	}
 385
 386	public void setupIme() {
 387		if (activity == null) {
 388			return;
 389		} else if (activity.usingEnterKey() && activity.enterIsSend()) {
 390			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_FLAG_MULTI_LINE));
 391			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 392		} else if (activity.usingEnterKey()) {
 393			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 394			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 395		} else {
 396			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 397			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
 398		}
 399	}
 400
 401	@Override
 402	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 403		final View view = inflater.inflate(R.layout.fragment_conversation, container, false);
 404		view.setOnClickListener(null);
 405		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
 406		mEditMessage.setOnClickListener(new OnClickListener() {
 407
 408			@Override
 409			public void onClick(View v) {
 410				if (activity != null) {
 411					activity.hideConversationsOverview();
 412				}
 413			}
 414		});
 415		mEditMessage.setOnEditorActionListener(mEditorActionListener);
 416
 417		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
 418		mSendButton.setOnClickListener(this.mSendButtonListener);
 419
 420		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
 421		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
 422		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
 423
 424		messagesView = (ListView) view.findViewById(R.id.messages_view);
 425		messagesView.setOnScrollListener(mOnScrollListener);
 426		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 427		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
 428		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
 429
 430			@Override
 431			public void onContactPictureClicked(Message message) {
 432				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 433					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 434						if (message.getCounterpart() != null) {
 435							String user = message.getCounterpart().isBareJid() ? message.getCounterpart().toString() : message.getCounterpart().getResourcepart();
 436							if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 437								Toast.makeText(activity,activity.getString(R.string.user_has_left_conference,user),Toast.LENGTH_SHORT).show();
 438							}
 439							highlightInConference(user);
 440						}
 441					} else {
 442						activity.switchToContactDetails(message.getContact(), message.getAxolotlFingerprint());
 443					}
 444				} else {
 445					Account account = message.getConversation().getAccount();
 446					Intent intent = new Intent(activity, EditAccountActivity.class);
 447					intent.putExtra("jid", account.getJid().toBareJid().toString());
 448					intent.putExtra("fingerprint", message.getAxolotlFingerprint());
 449					startActivity(intent);
 450				}
 451			}
 452		});
 453		messageListAdapter
 454				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
 455
 456					@Override
 457					public void onContactPictureLongClicked(Message message) {
 458						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 459							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 460								if (message.getCounterpart() != null) {
 461									String user = message.getCounterpart().getResourcepart();
 462									if (user != null) {
 463										if (message.getConversation().getMucOptions().isUserInRoom(user)) {
 464											privateMessageWith(message.getCounterpart());
 465										} else {
 466											Toast.makeText(activity, activity.getString(R.string.user_has_left_conference, user), Toast.LENGTH_SHORT).show();
 467										}
 468									}
 469								}
 470							}
 471						} else {
 472							activity.showQrCode();
 473						}
 474					}
 475				});
 476		messagesView.setAdapter(messageListAdapter);
 477
 478		registerForContextMenu(messagesView);
 479
 480		return view;
 481	}
 482
 483	@Override
 484	public void onCreateContextMenu(ContextMenu menu, View v,
 485									ContextMenuInfo menuInfo) {
 486		synchronized (this.messageList) {
 487			super.onCreateContextMenu(menu, v, menuInfo);
 488			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 489			this.selectedMessage = this.messageList.get(acmi.position);
 490			populateContextMenu(menu);
 491		}
 492	}
 493
 494	private void populateContextMenu(ContextMenu menu) {
 495		final Message m = this.selectedMessage;
 496		if (m.getType() != Message.TYPE_STATUS) {
 497			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 498			menu.setHeaderTitle(R.string.message_options);
 499			MenuItem copyText = menu.findItem(R.id.copy_text);
 500			MenuItem shareWith = menu.findItem(R.id.share_with);
 501			MenuItem sendAgain = menu.findItem(R.id.send_again);
 502			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 503			MenuItem downloadFile = menu.findItem(R.id.download_file);
 504			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 505			if ((m.getType() == Message.TYPE_TEXT || m.getType() == Message.TYPE_PRIVATE)
 506					&& m.getTransferable() == null
 507					&& !GeoHelper.isGeoUri(m.getBody())
 508					&& m.treatAsDownloadable() != Message.Decision.MUST) {
 509				copyText.setVisible(true);
 510			}
 511			if ((m.getType() != Message.TYPE_TEXT
 512					&& m.getType() != Message.TYPE_PRIVATE
 513					&& m.getTransferable() == null)
 514					|| (GeoHelper.isGeoUri(m.getBody()))) {
 515				shareWith.setVisible(true);
 516			}
 517			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 518				sendAgain.setVisible(true);
 519			}
 520			if (m.hasFileOnRemoteHost()
 521					|| GeoHelper.isGeoUri(m.getBody())
 522					|| m.treatAsDownloadable() == Message.Decision.MUST) {
 523				copyUrl.setVisible(true);
 524			}
 525			if ((m.getType() == Message.TYPE_TEXT && m.getTransferable() == null && m.treatAsDownloadable() != Message.Decision.NEVER)
 526					|| (m.isFileOrImage() && m.getTransferable() instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())){
 527				downloadFile.setVisible(true);
 528				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 529			}
 530			if ((m.getTransferable() != null && !(m.getTransferable() instanceof TransferablePlaceholder))
 531					|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
 532					|| m.getStatus() == Message.STATUS_OFFERED))) {
 533				cancelTransmission.setVisible(true);
 534			}
 535		}
 536	}
 537
 538	@Override
 539	public boolean onContextItemSelected(MenuItem item) {
 540		switch (item.getItemId()) {
 541			case R.id.share_with:
 542				shareWith(selectedMessage);
 543				return true;
 544			case R.id.copy_text:
 545				copyText(selectedMessage);
 546				return true;
 547			case R.id.send_again:
 548				resendMessage(selectedMessage);
 549				return true;
 550			case R.id.copy_url:
 551				copyUrl(selectedMessage);
 552				return true;
 553			case R.id.download_file:
 554				downloadFile(selectedMessage);
 555				return true;
 556			case R.id.cancel_transmission:
 557				cancelTransmission(selectedMessage);
 558				return true;
 559			default:
 560				return super.onContextItemSelected(item);
 561		}
 562	}
 563
 564	private void shareWith(Message message) {
 565		Intent shareIntent = new Intent();
 566		shareIntent.setAction(Intent.ACTION_SEND);
 567		if (GeoHelper.isGeoUri(message.getBody())) {
 568			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
 569			shareIntent.setType("text/plain");
 570		} else {
 571			shareIntent.putExtra(Intent.EXTRA_STREAM,
 572					activity.xmppConnectionService.getFileBackend()
 573							.getJingleFileUri(message));
 574			shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 575			String mime = message.getMimeType();
 576			if (mime == null) {
 577				mime = "*/*";
 578			}
 579			shareIntent.setType(mime);
 580		}
 581		try {
 582			activity.startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
 583		} catch (ActivityNotFoundException e) {
 584			//This should happen only on faulty androids because normally chooser is always available
 585			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 586		}
 587	}
 588
 589	private void copyText(Message message) {
 590		if (activity.copyTextToClipboard(message.getMergedBody(),
 591				R.string.message_text)) {
 592			Toast.makeText(activity, R.string.message_copied_to_clipboard,
 593					Toast.LENGTH_SHORT).show();
 594		}
 595	}
 596
 597	private void resendMessage(Message message) {
 598		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
 599			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 600			if (!file.exists()) {
 601				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 602				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 603				return;
 604			}
 605		}
 606		activity.xmppConnectionService.resendFailedMessages(message);
 607	}
 608
 609	private void copyUrl(Message message) {
 610		final String url;
 611		final int resId;
 612		if (GeoHelper.isGeoUri(message.getBody())) {
 613			resId = R.string.location;
 614			url = message.getBody();
 615		} else if (message.hasFileOnRemoteHost()) {
 616			resId = R.string.file_url;
 617			url = message.getFileParams().url.toString();
 618		} else {
 619			url = message.getBody().trim();
 620			resId = R.string.file_url;
 621		}
 622		if (activity.copyTextToClipboard(url, resId)) {
 623			Toast.makeText(activity, R.string.url_copied_to_clipboard,
 624					Toast.LENGTH_SHORT).show();
 625		}
 626	}
 627
 628	private void downloadFile(Message message) {
 629		activity.xmppConnectionService.getHttpConnectionManager()
 630				.createNewDownloadConnection(message,true);
 631	}
 632
 633	private void cancelTransmission(Message message) {
 634		Transferable transferable = message.getTransferable();
 635		if (transferable != null) {
 636			transferable.cancel();
 637		} else {
 638			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
 639		}
 640	}
 641
 642	protected void privateMessageWith(final Jid counterpart) {
 643		this.mEditMessage.setText("");
 644		this.conversation.setNextCounterpart(counterpart);
 645		updateChatMsgHint();
 646		updateSendButton();
 647	}
 648
 649	protected void highlightInConference(String nick) {
 650		String oldString = mEditMessage.getText().toString().trim();
 651		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
 652			mEditMessage.getText().insert(0, nick + ": ");
 653		} else {
 654			if (mEditMessage.getText().charAt(
 655					mEditMessage.getSelectionStart() - 1) != ' ') {
 656				nick = " " + nick;
 657			}
 658			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
 659					nick + " ");
 660		}
 661	}
 662
 663	@Override
 664	public void onStop() {
 665		super.onStop();
 666		if (this.conversation != null) {
 667			final String msg = mEditMessage.getText().toString();
 668			this.conversation.setNextMessage(msg);
 669			updateChatState(this.conversation, msg);
 670		}
 671	}
 672
 673	private void updateChatState(final Conversation conversation, final String msg) {
 674		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
 675		Account.State status = conversation.getAccount().getStatus();
 676		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
 677			activity.xmppConnectionService.sendChatState(conversation);
 678		}
 679	}
 680
 681	public void reInit(Conversation conversation) {
 682		if (conversation == null) {
 683			return;
 684		}
 685		this.activity = (ConversationActivity) getActivity();
 686		setupIme();
 687		if (this.conversation != null) {
 688			final String msg = mEditMessage.getText().toString();
 689			this.conversation.setNextMessage(msg);
 690			if (this.conversation != conversation) {
 691				updateChatState(this.conversation, msg);
 692			}
 693			this.conversation.trim();
 694		}
 695
 696		this.keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 697		this.conversation = conversation;
 698		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
 699			this.conversation.setNextCounterpart(null);
 700		}
 701		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating();
 702		this.mEditMessage.setEnabled(canWrite);
 703		this.mSendButton.setEnabled(canWrite);
 704		this.mEditMessage.setKeyboardListener(null);
 705		this.mEditMessage.setText("");
 706		this.mEditMessage.append(this.conversation.getNextMessage());
 707		this.mEditMessage.setKeyboardListener(this);
 708		messageListAdapter.updatePreferences();
 709		this.messagesView.setAdapter(messageListAdapter);
 710		updateMessages();
 711		this.messagesLoaded = true;
 712		int size = this.messageList.size();
 713		if (size > 0) {
 714			messagesView.setSelection(size - 1);
 715		}
 716	}
 717
 718	private OnClickListener mUnblockClickListener = new OnClickListener() {
 719		@Override
 720		public void onClick(final View v) {
 721			v.post(new Runnable() {
 722				@Override
 723				public void run() {
 724					v.setVisibility(View.INVISIBLE);
 725				}
 726			});
 727			if (conversation.isDomainBlocked()) {
 728				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
 729			} else {
 730				activity.unblockConversation(conversation);
 731			}
 732		}
 733	};
 734
 735	private OnClickListener mAddBackClickListener = new OnClickListener() {
 736
 737		@Override
 738		public void onClick(View v) {
 739			final Contact contact = conversation == null ? null : conversation.getContact();
 740			if (contact != null) {
 741				activity.xmppConnectionService.createContact(contact);
 742				activity.switchToContactDetails(contact);
 743			}
 744		}
 745	};
 746
 747	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
 748		@Override
 749		public void onClick(View view) {
 750			Intent intent = new Intent(activity, VerifyOTRActivity.class);
 751			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
 752			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
 753			intent.putExtra(VerifyOTRActivity.EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 754			intent.putExtra("mode", VerifyOTRActivity.MODE_ANSWER_QUESTION);
 755			startActivity(intent);
 756		}
 757	};
 758
 759	private void updateSnackBar(final Conversation conversation) {
 760		final Account account = conversation.getAccount();
 761		final Contact contact = conversation.getContact();
 762		final int mode = conversation.getMode();
 763		if (conversation.isBlocked()) {
 764			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
 765		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
 766			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener);
 767		} else if (mode == Conversation.MODE_MULTI
 768				&& !conversation.getMucOptions().online()
 769				&& account.getStatus() == Account.State.ONLINE) {
 770			switch (conversation.getMucOptions().getError()) {
 771				case MucOptions.ERROR_NICK_IN_USE:
 772					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
 773					break;
 774				case MucOptions.ERROR_NO_RESPONSE:
 775					showSnackbar(R.string.conference_not_found, R.string.leave, leaveMuc);
 776					break;
 777				case MucOptions.ERROR_PASSWORD_REQUIRED:
 778					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
 779					break;
 780				case MucOptions.ERROR_BANNED:
 781					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
 782					break;
 783				case MucOptions.ERROR_MEMBERS_ONLY:
 784					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
 785					break;
 786				case MucOptions.KICKED_FROM_ROOM:
 787					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
 788					break;
 789				case MucOptions.ERROR_UNKNOWN:
 790					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
 791					break;
 792				default:
 793					break;
 794			}
 795		} else if (keychainUnlock == KEYCHAIN_UNLOCK_REQUIRED) {
 796			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
 797		} else if (mode == Conversation.MODE_SINGLE
 798				&& conversation.smpRequested()) {
 799			showSnackbar(R.string.smp_requested, R.string.verify, this.mAnswerSmpClickListener);
 800		} else if (mode == Conversation.MODE_SINGLE
 801				&& conversation.hasValidOtrSession()
 802				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
 803				&& (!conversation.isOtrFingerprintVerified())) {
 804			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
 805		} else {
 806			hideSnackbar();
 807		}
 808	}
 809
 810	public void updateMessages() {
 811		synchronized (this.messageList) {
 812			if (getView() == null) {
 813				return;
 814			}
 815			final ConversationActivity activity = (ConversationActivity) getActivity();
 816			if (this.conversation != null) {
 817				conversation.populateWithMessages(ConversationFragment.this.messageList);
 818				updatePgpMessages();
 819				updateSnackBar(conversation);
 820				updateStatusMessages();
 821				this.messageListAdapter.notifyDataSetChanged();
 822				updateChatMsgHint();
 823				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
 824					activity.sendReadMarkerIfNecessary(conversation);
 825				}
 826				this.updateSendButton();
 827			}
 828		}
 829	}
 830
 831	public void updatePgpMessages() {
 832		if (keychainUnlock != KEYCHAIN_UNLOCK_PENDING) {
 833			if (getLastPgpDecryptableMessage() != null
 834					&& !conversation.getAccount().getPgpDecryptionService().isRunning()) {
 835				keychainUnlock = KEYCHAIN_UNLOCK_REQUIRED;
 836			} else {
 837				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 838			}
 839		}
 840	}
 841
 842	@Nullable
 843	private Message getLastPgpDecryptableMessage() {
 844		for (final Message message : this.messageList) {
 845			if (message.getEncryption() == Message.ENCRYPTION_PGP
 846					&& (message.getStatus() == Message.STATUS_RECEIVED || message.getStatus() >= Message.STATUS_SEND)
 847					&& message.getTransferable() == null) {
 848				return message;
 849			}
 850		}
 851		return null;
 852	}
 853
 854	private void messageSent() {
 855		int size = this.messageList.size();
 856		messagesView.setSelection(size - 1);
 857		mEditMessage.setText("");
 858		updateChatMsgHint();
 859	}
 860
 861	public void setFocusOnInputField() {
 862		mEditMessage.requestFocus();
 863	}
 864
 865	enum SendButtonAction {TEXT, TAKE_PHOTO, SEND_LOCATION, RECORD_VOICE, CANCEL, CHOOSE_PICTURE}
 866
 867	private int getSendButtonImageResource(SendButtonAction action, Presence.Status status) {
 868		switch (action) {
 869			case TEXT:
 870				switch (status) {
 871					case CHAT:
 872					case ONLINE:
 873						return R.drawable.ic_send_text_online;
 874					case AWAY:
 875						return R.drawable.ic_send_text_away;
 876					case XA:
 877					case DND:
 878						return R.drawable.ic_send_text_dnd;
 879					default:
 880						return R.drawable.ic_send_text_offline;
 881				}
 882			case TAKE_PHOTO:
 883				switch (status) {
 884					case CHAT:
 885					case ONLINE:
 886						return R.drawable.ic_send_photo_online;
 887					case AWAY:
 888						return R.drawable.ic_send_photo_away;
 889					case XA:
 890					case DND:
 891						return R.drawable.ic_send_photo_dnd;
 892					default:
 893						return R.drawable.ic_send_photo_offline;
 894				}
 895			case RECORD_VOICE:
 896				switch (status) {
 897					case CHAT:
 898					case ONLINE:
 899						return R.drawable.ic_send_voice_online;
 900					case AWAY:
 901						return R.drawable.ic_send_voice_away;
 902					case XA:
 903					case DND:
 904						return R.drawable.ic_send_voice_dnd;
 905					default:
 906						return R.drawable.ic_send_voice_offline;
 907				}
 908			case SEND_LOCATION:
 909				switch (status) {
 910					case CHAT:
 911					case ONLINE:
 912						return R.drawable.ic_send_location_online;
 913					case AWAY:
 914						return R.drawable.ic_send_location_away;
 915					case XA:
 916					case DND:
 917						return R.drawable.ic_send_location_dnd;
 918					default:
 919						return R.drawable.ic_send_location_offline;
 920				}
 921			case CANCEL:
 922				switch (status) {
 923					case CHAT:
 924					case ONLINE:
 925						return R.drawable.ic_send_cancel_online;
 926					case AWAY:
 927						return R.drawable.ic_send_cancel_away;
 928					case XA:
 929					case DND:
 930						return R.drawable.ic_send_cancel_dnd;
 931					default:
 932						return R.drawable.ic_send_cancel_offline;
 933				}
 934			case CHOOSE_PICTURE:
 935				switch (status) {
 936					case CHAT:
 937					case ONLINE:
 938						return R.drawable.ic_send_picture_online;
 939					case AWAY:
 940						return R.drawable.ic_send_picture_away;
 941					case XA:
 942					case DND:
 943						return R.drawable.ic_send_picture_dnd;
 944					default:
 945						return R.drawable.ic_send_picture_offline;
 946				}
 947		}
 948		return R.drawable.ic_send_text_offline;
 949	}
 950
 951	public void updateSendButton() {
 952		final Conversation c = this.conversation;
 953		final SendButtonAction action;
 954		final Presence.Status status;
 955		final boolean empty = this.mEditMessage == null || this.mEditMessage.getText().length() == 0;
 956		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
 957		if (conference && !c.getAccount().httpUploadAvailable()) {
 958			if (empty && c.getNextCounterpart() != null) {
 959				action = SendButtonAction.CANCEL;
 960			} else {
 961				action = SendButtonAction.TEXT;
 962			}
 963		} else {
 964			if (empty) {
 965				if (conference && c.getNextCounterpart() != null) {
 966					action = SendButtonAction.CANCEL;
 967				} else {
 968					String setting = activity.getPreferences().getString("quick_action", "recent");
 969					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
 970						setting = "location";
 971					} else if (setting.equals("recent")) {
 972						setting = activity.getPreferences().getString("recently_used_quick_action", "text");
 973					}
 974					switch (setting) {
 975						case "photo":
 976							action = SendButtonAction.TAKE_PHOTO;
 977							break;
 978						case "location":
 979							action = SendButtonAction.SEND_LOCATION;
 980							break;
 981						case "voice":
 982							action = SendButtonAction.RECORD_VOICE;
 983							break;
 984						case "picture":
 985							action = SendButtonAction.CHOOSE_PICTURE;
 986							break;
 987						default:
 988							action = SendButtonAction.TEXT;
 989							break;
 990					}
 991				}
 992			} else {
 993				action = SendButtonAction.TEXT;
 994			}
 995		}
 996		if (activity.useSendButtonToIndicateStatus() && c != null
 997				&& c.getAccount().getStatus() == Account.State.ONLINE) {
 998			if (c.getMode() == Conversation.MODE_SINGLE) {
 999				status = c.getContact().getMostAvailableStatus();
1000			} else {
1001				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1002			}
1003		} else {
1004			status = Presence.Status.OFFLINE;
1005		}
1006		this.mSendButton.setTag(action);
1007		this.mSendButton.setImageResource(getSendButtonImageResource(action, status));
1008	}
1009
1010	protected void updateStatusMessages() {
1011		synchronized (this.messageList) {
1012			if (conversation.getLastClearHistory() != 0) {
1013				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1014			}
1015			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1016				ChatState state = conversation.getIncomingChatState();
1017				if (state == ChatState.COMPOSING) {
1018					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1019				} else if (state == ChatState.PAUSED) {
1020					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1021				} else {
1022					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1023						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1024							return;
1025						} else {
1026							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1027								this.messageList.add(i + 1,
1028										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1029								return;
1030							}
1031						}
1032					}
1033				}
1034			}
1035		}
1036	}
1037
1038	protected void showSnackbar(final int message, final int action,
1039								final OnClickListener clickListener) {
1040		snackbar.setVisibility(View.VISIBLE);
1041		snackbar.setOnClickListener(null);
1042		snackbarMessage.setText(message);
1043		snackbarMessage.setOnClickListener(null);
1044		snackbarAction.setVisibility(View.VISIBLE);
1045		snackbarAction.setText(action);
1046		snackbarAction.setOnClickListener(clickListener);
1047	}
1048
1049	protected void hideSnackbar() {
1050		snackbar.setVisibility(View.GONE);
1051	}
1052
1053	protected void sendPlainTextMessage(Message message) {
1054		ConversationActivity activity = (ConversationActivity) getActivity();
1055		activity.xmppConnectionService.sendMessage(message);
1056		messageSent();
1057	}
1058
1059	protected void sendPgpMessage(final Message message) {
1060		final ConversationActivity activity = (ConversationActivity) getActivity();
1061		final XmppConnectionService xmppService = activity.xmppConnectionService;
1062		final Contact contact = message.getConversation().getContact();
1063		if (!activity.hasPgp()) {
1064			activity.showInstallPgpDialog();
1065			return;
1066		}
1067		if (conversation.getAccount().getPgpSignature() == null) {
1068			activity.announcePgp(conversation.getAccount(), conversation);
1069			return;
1070		}
1071		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1072			if (contact.getPgpKeyId() != 0) {
1073				xmppService.getPgpEngine().hasKey(contact,
1074						new UiCallback<Contact>() {
1075
1076							@Override
1077							public void userInputRequried(PendingIntent pi,
1078														  Contact contact) {
1079								activity.runIntent(
1080										pi,
1081										ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
1082							}
1083
1084							@Override
1085							public void success(Contact contact) {
1086								messageSent();
1087								activity.encryptTextMessage(message);
1088							}
1089
1090							@Override
1091							public void error(int error, Contact contact) {
1092								System.out.println();
1093							}
1094						});
1095
1096			} else {
1097				showNoPGPKeyDialog(false,
1098						new DialogInterface.OnClickListener() {
1099
1100							@Override
1101							public void onClick(DialogInterface dialog,
1102												int which) {
1103								conversation
1104										.setNextEncryption(Message.ENCRYPTION_NONE);
1105								xmppService.databaseBackend
1106										.updateConversation(conversation);
1107								message.setEncryption(Message.ENCRYPTION_NONE);
1108								xmppService.sendMessage(message);
1109								messageSent();
1110							}
1111						});
1112			}
1113		} else {
1114			if (conversation.getMucOptions().pgpKeysInUse()) {
1115				if (!conversation.getMucOptions().everybodyHasKeys()) {
1116					Toast warning = Toast
1117							.makeText(getActivity(),
1118									R.string.missing_public_keys,
1119									Toast.LENGTH_LONG);
1120					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1121					warning.show();
1122				}
1123				activity.encryptTextMessage(message);
1124				messageSent();
1125			} else {
1126				showNoPGPKeyDialog(true,
1127						new DialogInterface.OnClickListener() {
1128
1129							@Override
1130							public void onClick(DialogInterface dialog,
1131												int which) {
1132								conversation
1133										.setNextEncryption(Message.ENCRYPTION_NONE);
1134								message.setEncryption(Message.ENCRYPTION_NONE);
1135								xmppService.databaseBackend
1136										.updateConversation(conversation);
1137								xmppService.sendMessage(message);
1138								messageSent();
1139							}
1140						});
1141			}
1142		}
1143	}
1144
1145	public void showNoPGPKeyDialog(boolean plural,
1146								   DialogInterface.OnClickListener listener) {
1147		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1148		builder.setIconAttribute(android.R.attr.alertDialogIcon);
1149		if (plural) {
1150			builder.setTitle(getString(R.string.no_pgp_keys));
1151			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
1152		} else {
1153			builder.setTitle(getString(R.string.no_pgp_key));
1154			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
1155		}
1156		builder.setNegativeButton(getString(R.string.cancel), null);
1157		builder.setPositiveButton(getString(R.string.send_unencrypted),
1158				listener);
1159		builder.create().show();
1160	}
1161
1162	protected void sendAxolotlMessage(final Message message) {
1163		final ConversationActivity activity = (ConversationActivity) getActivity();
1164		final XmppConnectionService xmppService = activity.xmppConnectionService;
1165		xmppService.sendMessage(message);
1166		messageSent();
1167	}
1168
1169	protected void sendOtrMessage(final Message message) {
1170		final ConversationActivity activity = (ConversationActivity) getActivity();
1171		final XmppConnectionService xmppService = activity.xmppConnectionService;
1172		activity.selectPresence(message.getConversation(),
1173				new OnPresenceSelected() {
1174
1175					@Override
1176					public void onPresenceSelected() {
1177						message.setCounterpart(conversation.getNextCounterpart());
1178						xmppService.sendMessage(message);
1179						messageSent();
1180					}
1181				});
1182	}
1183
1184	public void appendText(String text) {
1185		if (text == null) {
1186			return;
1187		}
1188		String previous = this.mEditMessage.getText().toString();
1189		if (previous.length() != 0 && !previous.endsWith(" ")) {
1190			text = " " + text;
1191		}
1192		this.mEditMessage.append(text);
1193	}
1194
1195	@Override
1196	public boolean onEnterPressed() {
1197		if (activity.enterIsSend()) {
1198			sendMessage();
1199			return true;
1200		} else {
1201			return false;
1202		}
1203	}
1204
1205	@Override
1206	public void onTypingStarted() {
1207		Account.State status = conversation.getAccount().getStatus();
1208		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
1209			activity.xmppConnectionService.sendChatState(conversation);
1210		}
1211		activity.hideConversationsOverview();
1212		updateSendButton();
1213	}
1214
1215	@Override
1216	public void onTypingStopped() {
1217		Account.State status = conversation.getAccount().getStatus();
1218		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
1219			activity.xmppConnectionService.sendChatState(conversation);
1220		}
1221	}
1222
1223	@Override
1224	public void onTextDeleted() {
1225		Account.State status = conversation.getAccount().getStatus();
1226		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1227			activity.xmppConnectionService.sendChatState(conversation);
1228		}
1229		updateSendButton();
1230	}
1231
1232	private int completionIndex = 0;
1233	private int lastCompletionLength = 0;
1234	private String incomplete;
1235	private int lastCompletionCursor;
1236	private boolean firstWord = false;
1237
1238	@Override
1239	public boolean onTabPressed(boolean repeated) {
1240		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
1241			return false;
1242		}
1243		if (repeated) {
1244			completionIndex++;
1245		} else {
1246			lastCompletionLength = 0;
1247			completionIndex = 0;
1248			final String content = mEditMessage.getText().toString();
1249			lastCompletionCursor = mEditMessage.getSelectionEnd();
1250			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ",lastCompletionCursor-1) + 1 : 0;
1251			firstWord = start == 0;
1252			incomplete = content.substring(start,lastCompletionCursor);
1253		}
1254		List<String> completions = new ArrayList<>();
1255		for(MucOptions.User user : conversation.getMucOptions().getUsers()) {
1256			if (user.getName().startsWith(incomplete)) {
1257				completions.add(user.getName()+(firstWord ? ": " : " "));
1258			}
1259		}
1260		Collections.sort(completions);
1261		if (completions.size() > completionIndex) {
1262			String completion = completions.get(completionIndex).substring(incomplete.length());
1263			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1264			mEditMessage.getEditableText().insert(lastCompletionCursor, completion);
1265			lastCompletionLength = completion.length();
1266		} else {
1267			completionIndex = -1;
1268			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1269			lastCompletionLength = 0;
1270		}
1271		return true;
1272	}
1273
1274	@Override
1275	public void onActivityResult(int requestCode, int resultCode,
1276	                                final Intent data) {
1277		if (resultCode == Activity.RESULT_OK) {
1278			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1279				activity.getSelectedConversation().getAccount().getPgpDecryptionService().onKeychainUnlocked();
1280				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1281				updatePgpMessages();
1282			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_TEXT) {
1283				final String body = mEditMessage.getText().toString();
1284				Message message = new Message(conversation, body, conversation.getNextEncryption());
1285				sendAxolotlMessage(message);
1286			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_MENU) {
1287				int choice = data.getIntExtra("choice", ConversationActivity.ATTACHMENT_CHOICE_INVALID);
1288				activity.selectPresenceToAttachFile(choice, conversation.getNextEncryption());
1289			}
1290		} else {
1291			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1292				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1293				updatePgpMessages();
1294			}
1295		}
1296	}
1297
1298}