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.SendIntentException;
  12import android.content.res.TypedArray;
  13import android.os.Bundle;
  14import android.os.Handler;
  15import android.support.annotation.Nullable;
  16import android.text.InputType;
  17import android.util.Log;
  18import android.view.ContextMenu;
  19import android.view.ContextMenu.ContextMenuInfo;
  20import android.view.Gravity;
  21import android.view.KeyEvent;
  22import android.view.LayoutInflater;
  23import android.view.MenuItem;
  24import android.view.View;
  25import android.view.View.OnClickListener;
  26import android.view.ViewGroup;
  27import android.view.inputmethod.EditorInfo;
  28import android.view.inputmethod.InputMethodManager;
  29import android.widget.AbsListView;
  30import android.widget.AbsListView.OnScrollListener;
  31import android.widget.AdapterView;
  32import android.widget.AdapterView.AdapterContextMenuInfo;
  33import android.widget.ImageButton;
  34import android.widget.ListView;
  35import android.widget.RelativeLayout;
  36import android.widget.TextView;
  37import android.widget.TextView.OnEditorActionListener;
  38import android.widget.Toast;
  39
  40import net.java.otr4j.session.SessionStatus;
  41
  42import java.util.ArrayList;
  43import java.util.Collections;
  44import java.util.List;
  45import java.util.UUID;
  46
  47import eu.siacs.conversations.Config;
  48import eu.siacs.conversations.R;
  49import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  50import eu.siacs.conversations.entities.Account;
  51import eu.siacs.conversations.entities.Contact;
  52import eu.siacs.conversations.entities.Conversation;
  53import eu.siacs.conversations.entities.DownloadableFile;
  54import eu.siacs.conversations.entities.Message;
  55import eu.siacs.conversations.entities.MucOptions;
  56import eu.siacs.conversations.entities.Presence;
  57import eu.siacs.conversations.entities.Transferable;
  58import eu.siacs.conversations.entities.TransferablePlaceholder;
  59import eu.siacs.conversations.http.HttpDownloadConnection;
  60import eu.siacs.conversations.services.MessageArchiveService;
  61import eu.siacs.conversations.services.XmppConnectionService;
  62import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
  63import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
  64import eu.siacs.conversations.ui.adapter.MessageAdapter;
  65import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
  66import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
  67import eu.siacs.conversations.utils.GeoHelper;
  68import eu.siacs.conversations.utils.UIHelper;
  69import eu.siacs.conversations.xmpp.XmppConnection;
  70import eu.siacs.conversations.xmpp.chatstate.ChatState;
  71import eu.siacs.conversations.xmpp.jid.Jid;
  72
  73public class ConversationFragment extends Fragment implements EditMessage.KeyboardListener {
  74
  75	protected Conversation conversation;
  76	private OnClickListener leaveMuc = new OnClickListener() {
  77
  78		@Override
  79		public void onClick(View v) {
  80			activity.endConversation(conversation);
  81		}
  82	};
  83	private OnClickListener joinMuc = new OnClickListener() {
  84
  85		@Override
  86		public void onClick(View v) {
  87			activity.xmppConnectionService.joinMuc(conversation);
  88		}
  89	};
  90	private OnClickListener enterPassword = new OnClickListener() {
  91
  92		@Override
  93		public void onClick(View v) {
  94			MucOptions muc = conversation.getMucOptions();
  95			String password = muc.getPassword();
  96			if (password == null) {
  97				password = "";
  98			}
  99			activity.quickPasswordEdit(password, new OnValueEdited() {
 100
 101				@Override
 102				public void onValueEdited(String value) {
 103					activity.xmppConnectionService.providePasswordForMuc(
 104							conversation, value);
 105				}
 106			});
 107		}
 108	};
 109	protected ListView messagesView;
 110	final protected List<Message> messageList = new ArrayList<>();
 111	protected MessageAdapter messageListAdapter;
 112	private EditMessage mEditMessage;
 113	private ImageButton mSendButton;
 114	private RelativeLayout snackbar;
 115	private TextView snackbarMessage;
 116	private TextView snackbarAction;
 117	private boolean messagesLoaded = true;
 118	private Toast messageLoaderToast;
 119
 120	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 121
 122		@Override
 123		public void onScrollStateChanged(AbsListView view, int scrollState) {
 124			// TODO Auto-generated method stub
 125
 126		}
 127
 128		@Override
 129		public void onScroll(AbsListView view, int firstVisibleItem,
 130							 int visibleItemCount, int totalItemCount) {
 131			synchronized (ConversationFragment.this.messageList) {
 132				if (firstVisibleItem < 5 && messagesLoaded && messageList.size() > 0) {
 133					long timestamp;
 134					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 135						timestamp = messageList.get(1).getTimeSent();
 136					} else {
 137						timestamp = messageList.get(0).getTimeSent();
 138					}
 139					messagesLoaded = false;
 140					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 141						@Override
 142						public void onMoreMessagesLoaded(final int c, Conversation conversation) {
 143							if (ConversationFragment.this.conversation != conversation) {
 144								return;
 145							}
 146							activity.runOnUiThread(new Runnable() {
 147								@Override
 148								public void run() {
 149									final int oldPosition = messagesView.getFirstVisiblePosition();
 150									final Message message;
 151									if (oldPosition < messageList.size()) {
 152										message = messageList.get(oldPosition);
 153									}  else {
 154										message = null;
 155									}
 156									String uuid = message != null ? message.getUuid() : null;
 157									View v = messagesView.getChildAt(0);
 158									final int pxOffset = (v == null) ? 0 : v.getTop();
 159									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 160									updateStatusMessages();
 161									messageListAdapter.notifyDataSetChanged();
 162									int pos = Math.max(getIndexOf(uuid,messageList),0);
 163									messagesView.setSelectionFromTop(pos, pxOffset);
 164									messagesLoaded = true;
 165									if (messageLoaderToast != null) {
 166										messageLoaderToast.cancel();
 167									}
 168								}
 169							});
 170						}
 171
 172						@Override
 173						public void informUser(final int resId) {
 174
 175							activity.runOnUiThread(new Runnable() {
 176								@Override
 177								public void run() {
 178									if (messageLoaderToast != null) {
 179										messageLoaderToast.cancel();
 180									}
 181									if (ConversationFragment.this.conversation != conversation) {
 182										return;
 183									}
 184									messageLoaderToast = Toast.makeText(activity, resId, Toast.LENGTH_LONG);
 185									messageLoaderToast.show();
 186								}
 187							});
 188
 189						}
 190					});
 191
 192				}
 193			}
 194		}
 195	};
 196
 197	private int getIndexOf(String uuid, List<Message> messages) {
 198		if (uuid == null) {
 199			return messages.size() - 1;
 200		}
 201		for(int i = 0; i < messages.size(); ++i) {
 202			if (uuid.equals(messages.get(i).getUuid())) {
 203				return i;
 204			} else {
 205				Message next = messages.get(i);
 206				while(next != null && next.wasMergedIntoPrevious()) {
 207					if (uuid.equals(next.getUuid())) {
 208						return i;
 209					}
 210					next = next.next();
 211				}
 212
 213			}
 214		}
 215		return -1;
 216	}
 217
 218	private final int KEYCHAIN_UNLOCK_NOT_REQUIRED = 0;
 219	private final int KEYCHAIN_UNLOCK_REQUIRED = 1;
 220	private final int KEYCHAIN_UNLOCK_PENDING = 2;
 221	private int keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 222	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 223
 224		@Override
 225		public void onClick(View v) {
 226			if (keychainUnlock == KEYCHAIN_UNLOCK_REQUIRED
 227					&& activity.hasPgp() && !conversation.getAccount().getPgpDecryptionService().isRunning()) {
 228				keychainUnlock = KEYCHAIN_UNLOCK_PENDING;
 229				updateSnackBar(conversation);
 230				Message message = getLastPgpDecryptableMessage();
 231				if (message != null) {
 232					activity.xmppConnectionService.getPgpEngine().decrypt(message, new UiCallback<Message>() {
 233						@Override
 234						public void success(Message object) {
 235							conversation.getAccount().getPgpDecryptionService().onKeychainUnlocked();
 236							keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 237						}
 238
 239						@Override
 240						public void error(int errorCode, Message object) {
 241							keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 242						}
 243
 244						@Override
 245						public void userInputRequried(PendingIntent pi, Message object) {
 246							try {
 247								activity.startIntentSenderForResult(pi.getIntentSender(),
 248										ConversationActivity.REQUEST_DECRYPT_PGP, null, 0, 0, 0);
 249							} catch (SendIntentException e) {
 250								keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 251								updatePgpMessages();
 252							}
 253						}
 254					});
 255				}
 256			} else {
 257				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 258				updatePgpMessages();
 259			}
 260		}
 261	};
 262	protected OnClickListener clickToVerify = new OnClickListener() {
 263
 264		@Override
 265		public void onClick(View v) {
 266			activity.verifyOtrSessionDialog(conversation, v);
 267		}
 268	};
 269	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
 270
 271		@Override
 272		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 273			if (actionId == EditorInfo.IME_ACTION_SEND) {
 274				InputMethodManager imm = (InputMethodManager) v.getContext()
 275						.getSystemService(Context.INPUT_METHOD_SERVICE);
 276				if (imm.isFullscreenMode()) {
 277					imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 278				}
 279				sendMessage();
 280				return true;
 281			} else {
 282				return false;
 283			}
 284		}
 285	};
 286	private OnClickListener mSendButtonListener = new OnClickListener() {
 287
 288		@Override
 289		public void onClick(View v) {
 290			Object tag = v.getTag();
 291			if (tag instanceof SendButtonAction) {
 292				SendButtonAction action = (SendButtonAction) tag;
 293				switch (action) {
 294					case TAKE_PHOTO:
 295						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_TAKE_PHOTO);
 296						break;
 297					case SEND_LOCATION:
 298						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_LOCATION);
 299						break;
 300					case RECORD_VOICE:
 301						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_RECORD_VOICE);
 302						break;
 303					case CHOOSE_PICTURE:
 304						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_CHOOSE_IMAGE);
 305						break;
 306					case CANCEL:
 307						if (conversation != null) {
 308							if (conversation.getCorrectingMessage() != null) {
 309								conversation.setCorrectingMessage(null);
 310								mEditMessage.getEditableText().clear();
 311							}
 312							if (conversation.getMode() == Conversation.MODE_MULTI) {
 313								conversation.setNextCounterpart(null);
 314							}
 315							updateChatMsgHint();
 316							updateSendButton();
 317						}
 318						break;
 319					default:
 320						sendMessage();
 321				}
 322			} else {
 323				sendMessage();
 324			}
 325		}
 326	};
 327	private OnClickListener clickToMuc = new OnClickListener() {
 328
 329		@Override
 330		public void onClick(View v) {
 331			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 332			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 333			intent.putExtra("uuid", conversation.getUuid());
 334			startActivity(intent);
 335		}
 336	};
 337	private ConversationActivity activity;
 338	private Message selectedMessage;
 339
 340	public void setMessagesLoaded() {
 341		this.messagesLoaded = true;
 342	}
 343
 344	private void sendMessage() {
 345		final String body = mEditMessage.getText().toString();
 346		if (body.length() == 0 || this.conversation == null) {
 347			return;
 348		}
 349		final Message message;
 350		if (conversation.getCorrectingMessage() == null) {
 351			message = new Message(conversation, body, conversation.getNextEncryption());
 352			if (conversation.getMode() == Conversation.MODE_MULTI) {
 353				if (conversation.getNextCounterpart() != null) {
 354					message.setCounterpart(conversation.getNextCounterpart());
 355					message.setType(Message.TYPE_PRIVATE);
 356				}
 357			}
 358		} else {
 359			message = conversation.getCorrectingMessage();
 360			message.setBody(body);
 361			message.setEdited(message.getUuid());
 362			message.setUuid(UUID.randomUUID().toString());
 363			conversation.setCorrectingMessage(null);
 364		}
 365		switch (conversation.getNextEncryption()) {
 366			case Message.ENCRYPTION_OTR:
 367				sendOtrMessage(message);
 368				break;
 369			case Message.ENCRYPTION_PGP:
 370				sendPgpMessage(message);
 371				break;
 372			case Message.ENCRYPTION_AXOLOTL:
 373				if(!activity.trustKeysIfNeeded(ConversationActivity.REQUEST_TRUST_KEYS_TEXT)) {
 374					sendAxolotlMessage(message);
 375				}
 376				break;
 377			default:
 378				sendPlainTextMessage(message);
 379		}
 380	}
 381
 382	public void updateChatMsgHint() {
 383		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 384		if (conversation.getCorrectingMessage() != null) {
 385			this.mEditMessage.setHint(R.string.send_corrected_message);
 386		} else if (multi && conversation.getNextCounterpart() != null) {
 387			this.mEditMessage.setHint(getString(
 388					R.string.send_private_message_to,
 389					conversation.getNextCounterpart().getResourcepart()));
 390		} else if (multi && !conversation.getMucOptions().participating()) {
 391			this.mEditMessage.setHint(R.string.you_are_not_participating);
 392		} else {
 393			switch (conversation.getNextEncryption()) {
 394				case Message.ENCRYPTION_NONE:
 395					if (Config.multipleEncryptionChoices()) {
 396						mEditMessage.setHint(getString(R.string.send_unencrypted_message));
 397					} else {
 398						mEditMessage.setHint(getString(R.string.send_message_to_x,conversation.getName()));
 399					}
 400					break;
 401				case Message.ENCRYPTION_OTR:
 402					mEditMessage.setHint(getString(R.string.send_otr_message));
 403					break;
 404				case Message.ENCRYPTION_AXOLOTL:
 405					AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 406					if (axolotlService != null && axolotlService.trustedSessionVerified(conversation)) {
 407						mEditMessage.setHint(getString(R.string.send_omemo_x509_message));
 408					} else {
 409						mEditMessage.setHint(getString(R.string.send_omemo_message));
 410					}
 411					break;
 412				case Message.ENCRYPTION_PGP:
 413					mEditMessage.setHint(getString(R.string.send_pgp_message));
 414					break;
 415				default:
 416					break;
 417			}
 418			getActivity().invalidateOptionsMenu();
 419		}
 420	}
 421
 422	public void setupIme() {
 423		if (activity == null) {
 424			return;
 425		} else if (activity.usingEnterKey() && activity.enterIsSend()) {
 426			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_FLAG_MULTI_LINE));
 427			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 428		} else if (activity.usingEnterKey()) {
 429			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 430			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 431		} else {
 432			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 433			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
 434		}
 435	}
 436
 437	@Override
 438	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 439		final View view = inflater.inflate(R.layout.fragment_conversation, container, false);
 440		view.setOnClickListener(null);
 441		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
 442		mEditMessage.setOnClickListener(new OnClickListener() {
 443
 444			@Override
 445			public void onClick(View v) {
 446				if (activity != null) {
 447					activity.hideConversationsOverview();
 448				}
 449			}
 450		});
 451		mEditMessage.setOnEditorActionListener(mEditorActionListener);
 452
 453		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
 454		mSendButton.setOnClickListener(this.mSendButtonListener);
 455
 456		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
 457		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
 458		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
 459
 460		messagesView = (ListView) view.findViewById(R.id.messages_view);
 461		messagesView.setOnScrollListener(mOnScrollListener);
 462		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 463		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
 464		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
 465
 466			@Override
 467			public void onContactPictureClicked(Message message) {
 468				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 469					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 470						Jid user = message.getCounterpart();
 471						if (user != null && !user.isBareJid()) {
 472							if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 473								Toast.makeText(activity,activity.getString(R.string.user_has_left_conference,user.getResourcepart()),Toast.LENGTH_SHORT).show();
 474							}
 475							highlightInConference(user.getResourcepart());
 476						}
 477					} else {
 478						if (!message.getContact().isSelf()) {
 479							activity.switchToContactDetails(message.getContact(), message.getFingerprint());
 480						}
 481					}
 482				} else {
 483					Account account = message.getConversation().getAccount();
 484					Intent intent;
 485					if (activity.manuallyChangePresence()) {
 486						intent = new Intent(activity, SetPresenceActivity.class);
 487						intent.putExtra(SetPresenceActivity.EXTRA_ACCOUNT, account.getJid().toBareJid().toString());
 488					} else {
 489						intent = new Intent(activity, EditAccountActivity.class);
 490						intent.putExtra("jid", account.getJid().toBareJid().toString());
 491						intent.putExtra("fingerprint", message.getFingerprint());
 492					}
 493					startActivity(intent);
 494				}
 495			}
 496		});
 497		messageListAdapter
 498				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
 499
 500					@Override
 501					public void onContactPictureLongClicked(Message message) {
 502						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 503							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 504								Jid user = message.getCounterpart();
 505								if (user != null && !user.isBareJid()) {
 506									if (message.getConversation().getMucOptions().isUserInRoom(user)) {
 507										privateMessageWith(user);
 508									} else {
 509										Toast.makeText(activity, activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 510									}
 511								}
 512							}
 513						} else {
 514							activity.showQrCode();
 515						}
 516					}
 517				});
 518		messagesView.setAdapter(messageListAdapter);
 519
 520		registerForContextMenu(messagesView);
 521
 522		return view;
 523	}
 524
 525	@Override
 526	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 527		synchronized (this.messageList) {
 528			super.onCreateContextMenu(menu, v, menuInfo);
 529			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 530			this.selectedMessage = this.messageList.get(acmi.position);
 531			populateContextMenu(menu);
 532		}
 533	}
 534
 535	private void populateContextMenu(ContextMenu menu) {
 536		final Message m = this.selectedMessage;
 537		final Transferable t = m.getTransferable();
 538		Message relevantForCorrection = m;
 539		while(relevantForCorrection.mergeable(relevantForCorrection.next())) {
 540			relevantForCorrection = relevantForCorrection.next();
 541		}
 542		if (m.getType() != Message.TYPE_STATUS) {
 543			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 544					&& m.getType() != Message.TYPE_PRIVATE
 545					&& t == null;
 546			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 547			menu.setHeaderTitle(R.string.message_options);
 548			MenuItem copyText = menu.findItem(R.id.copy_text);
 549			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 550			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 551			MenuItem shareWith = menu.findItem(R.id.share_with);
 552			MenuItem sendAgain = menu.findItem(R.id.send_again);
 553			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 554			MenuItem downloadFile = menu.findItem(R.id.download_file);
 555			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 556			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 557			if (!treatAsFile
 558					&& !GeoHelper.isGeoUri(m.getBody())
 559					&& m.treatAsDownloadable() != Message.Decision.MUST) {
 560				copyText.setVisible(true);
 561			}
 562			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 563				retryDecryption.setVisible(true);
 564			}
 565			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 566					&& relevantForCorrection.isLastCorrectableMessage()) {
 567				correctMessage.setVisible(true);
 568			}
 569			if (treatAsFile || (GeoHelper.isGeoUri(m.getBody()))) {
 570				shareWith.setVisible(true);
 571			}
 572			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 573				sendAgain.setVisible(true);
 574			}
 575			if (m.hasFileOnRemoteHost()
 576					|| GeoHelper.isGeoUri(m.getBody())
 577					|| m.treatAsDownloadable() == Message.Decision.MUST
 578					|| (t != null && t instanceof HttpDownloadConnection)) {
 579				copyUrl.setVisible(true);
 580			}
 581			if ((m.getType() == Message.TYPE_TEXT && t == null && m.treatAsDownloadable() != Message.Decision.NEVER)
 582					|| (m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())){
 583				downloadFile.setVisible(true);
 584				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 585			}
 586			if ((t != null && !(t instanceof TransferablePlaceholder))
 587					|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
 588					|| m.getStatus() == Message.STATUS_OFFERED))) {
 589				cancelTransmission.setVisible(true);
 590			}
 591			if (treatAsFile) {
 592				deleteFile.setVisible(true);
 593				deleteFile.setTitle(activity.getString(R.string.delete_x_file,UIHelper.getFileDescriptionString(activity, m)));
 594			}
 595		}
 596	}
 597
 598	@Override
 599	public boolean onContextItemSelected(MenuItem item) {
 600		switch (item.getItemId()) {
 601			case R.id.share_with:
 602				shareWith(selectedMessage);
 603				return true;
 604			case R.id.copy_text:
 605				copyText(selectedMessage);
 606				return true;
 607			case R.id.correct_message:
 608				correctMessage(selectedMessage);
 609				return true;
 610			case R.id.send_again:
 611				resendMessage(selectedMessage);
 612				return true;
 613			case R.id.copy_url:
 614				copyUrl(selectedMessage);
 615				return true;
 616			case R.id.download_file:
 617				downloadFile(selectedMessage);
 618				return true;
 619			case R.id.cancel_transmission:
 620				cancelTransmission(selectedMessage);
 621				return true;
 622			case R.id.retry_decryption:
 623				retryDecryption(selectedMessage);
 624				return true;
 625			case R.id.delete_file:
 626				deleteFile(selectedMessage);
 627				return true;
 628			default:
 629				return super.onContextItemSelected(item);
 630		}
 631	}
 632
 633	private void shareWith(Message message) {
 634		Intent shareIntent = new Intent();
 635		shareIntent.setAction(Intent.ACTION_SEND);
 636		if (GeoHelper.isGeoUri(message.getBody())) {
 637			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
 638			shareIntent.setType("text/plain");
 639		} else {
 640			shareIntent.putExtra(Intent.EXTRA_STREAM,
 641					activity.xmppConnectionService.getFileBackend()
 642							.getJingleFileUri(message));
 643			shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 644			String mime = message.getMimeType();
 645			if (mime == null) {
 646				mime = "*/*";
 647			}
 648			shareIntent.setType(mime);
 649		}
 650		try {
 651			activity.startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
 652		} catch (ActivityNotFoundException e) {
 653			//This should happen only on faulty androids because normally chooser is always available
 654			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 655		}
 656	}
 657
 658	private void copyText(Message message) {
 659		if (activity.copyTextToClipboard(message.getMergedBody(),
 660				R.string.message_text)) {
 661			Toast.makeText(activity, R.string.message_copied_to_clipboard,
 662					Toast.LENGTH_SHORT).show();
 663		}
 664	}
 665
 666	private void deleteFile(Message message) {
 667		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
 668			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 669			activity.updateConversationList();
 670			updateMessages();
 671		}
 672	}
 673
 674	private void resendMessage(Message message) {
 675		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
 676			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 677			if (!file.exists()) {
 678				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 679				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 680				activity.updateConversationList();
 681				updateMessages();
 682				return;
 683			}
 684		}
 685		activity.xmppConnectionService.resendFailedMessages(message);
 686	}
 687
 688	private void copyUrl(Message message) {
 689		final String url;
 690		final int resId;
 691		if (GeoHelper.isGeoUri(message.getBody())) {
 692			resId = R.string.location;
 693			url = message.getBody();
 694		} else if (message.hasFileOnRemoteHost()) {
 695			resId = R.string.file_url;
 696			url = message.getFileParams().url.toString();
 697		} else {
 698			url = message.getBody().trim();
 699			resId = R.string.file_url;
 700		}
 701		if (activity.copyTextToClipboard(url, resId)) {
 702			Toast.makeText(activity, R.string.url_copied_to_clipboard,
 703					Toast.LENGTH_SHORT).show();
 704		}
 705	}
 706
 707	private void downloadFile(Message message) {
 708		activity.xmppConnectionService.getHttpConnectionManager()
 709				.createNewDownloadConnection(message,true);
 710	}
 711
 712	private void cancelTransmission(Message message) {
 713		Transferable transferable = message.getTransferable();
 714		if (transferable != null) {
 715			transferable.cancel();
 716		} else {
 717			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
 718		}
 719	}
 720
 721	private void retryDecryption(Message message) {
 722		message.setEncryption(Message.ENCRYPTION_PGP);
 723		activity.updateConversationList();
 724		updateMessages();
 725		conversation.getAccount().getPgpDecryptionService().add(message);
 726	}
 727
 728	protected void privateMessageWith(final Jid counterpart) {
 729		this.mEditMessage.setText("");
 730		this.conversation.setNextCounterpart(counterpart);
 731		updateChatMsgHint();
 732		updateSendButton();
 733	}
 734
 735	private void correctMessage(Message message) {
 736		while(message.mergeable(message.next())) {
 737			message = message.next();
 738		}
 739		this.conversation.setCorrectingMessage(message);
 740		this.mEditMessage.getEditableText().clear();
 741		this.mEditMessage.getEditableText().append(message.getBody());
 742
 743	}
 744
 745	protected void highlightInConference(String nick) {
 746		String oldString = mEditMessage.getText().toString().trim();
 747		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
 748			mEditMessage.getText().insert(0, nick + ": ");
 749		} else {
 750			if (mEditMessage.getText().charAt(
 751					mEditMessage.getSelectionStart() - 1) != ' ') {
 752				nick = " " + nick;
 753			}
 754			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
 755					nick + " ");
 756		}
 757	}
 758
 759	@Override
 760	public void onStop() {
 761		super.onStop();
 762		if (this.conversation != null) {
 763			final String msg = mEditMessage.getText().toString();
 764			this.conversation.setNextMessage(msg);
 765			updateChatState(this.conversation, msg);
 766		}
 767	}
 768
 769	private void updateChatState(final Conversation conversation, final String msg) {
 770		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
 771		Account.State status = conversation.getAccount().getStatus();
 772		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
 773			activity.xmppConnectionService.sendChatState(conversation);
 774		}
 775	}
 776
 777	public void reInit(Conversation conversation) {
 778		if (conversation == null) {
 779			return;
 780		}
 781		this.activity = (ConversationActivity) getActivity();
 782		setupIme();
 783		if (this.conversation != null) {
 784			final String msg = mEditMessage.getText().toString();
 785			this.conversation.setNextMessage(msg);
 786			if (this.conversation != conversation) {
 787				updateChatState(this.conversation, msg);
 788			}
 789			this.conversation.trim();
 790		}
 791
 792		this.keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 793		this.conversation = conversation;
 794		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating();
 795		this.mEditMessage.setEnabled(canWrite);
 796		this.mSendButton.setEnabled(canWrite);
 797		this.mEditMessage.setKeyboardListener(null);
 798		this.mEditMessage.setText("");
 799		this.mEditMessage.append(this.conversation.getNextMessage());
 800		this.mEditMessage.setKeyboardListener(this);
 801		messageListAdapter.updatePreferences();
 802		this.messagesView.setAdapter(messageListAdapter);
 803		updateMessages();
 804		this.messagesLoaded = true;
 805		synchronized (this.messageList) {
 806			final Message first = conversation.getFirstUnreadMessage();
 807			final int bottom = Math.max(0, this.messageList.size() - 1);
 808			final int pos;
 809			if (first == null) {
 810				pos = bottom;
 811			} else {
 812				int i = getIndexOf(first.getUuid(), this.messageList);
 813				pos = i < 0 ? bottom : i;
 814			}
 815			messagesView.setSelection(pos);
 816		}
 817	}
 818
 819	private OnClickListener mEnableAccountListener = new OnClickListener() {
 820		@Override
 821		public void onClick(View v) {
 822			final Account account = conversation == null ? null : conversation.getAccount();
 823			if (account != null) {
 824				account.setOption(Account.OPTION_DISABLED, false);
 825				activity.xmppConnectionService.updateAccount(account);
 826			}
 827		}
 828	};
 829
 830	private OnClickListener mUnblockClickListener = new OnClickListener() {
 831		@Override
 832		public void onClick(final View v) {
 833			v.post(new Runnable() {
 834				@Override
 835				public void run() {
 836					v.setVisibility(View.INVISIBLE);
 837				}
 838			});
 839			if (conversation.isDomainBlocked()) {
 840				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
 841			} else {
 842				activity.unblockConversation(conversation);
 843			}
 844		}
 845	};
 846
 847	private OnClickListener mAddBackClickListener = new OnClickListener() {
 848
 849		@Override
 850		public void onClick(View v) {
 851			final Contact contact = conversation == null ? null : conversation.getContact();
 852			if (contact != null) {
 853				activity.xmppConnectionService.createContact(contact);
 854				activity.switchToContactDetails(contact);
 855			}
 856		}
 857	};
 858
 859	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
 860		@Override
 861		public void onClick(View view) {
 862			Intent intent = new Intent(activity, VerifyOTRActivity.class);
 863			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
 864			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
 865			intent.putExtra(VerifyOTRActivity.EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 866			intent.putExtra("mode", VerifyOTRActivity.MODE_ANSWER_QUESTION);
 867			startActivity(intent);
 868		}
 869	};
 870
 871	private void updateSnackBar(final Conversation conversation) {
 872		final Account account = conversation.getAccount();
 873		final Contact contact = conversation.getContact();
 874		final int mode = conversation.getMode();
 875		if (account.getStatus() == Account.State.DISABLED) {
 876			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
 877		} else if (conversation.isBlocked()) {
 878			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
 879		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
 880			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener);
 881		} else if (mode == Conversation.MODE_MULTI
 882				&& !conversation.getMucOptions().online()
 883				&& account.getStatus() == Account.State.ONLINE) {
 884			switch (conversation.getMucOptions().getError()) {
 885				case NICK_IN_USE:
 886					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
 887					break;
 888				case NO_RESPONSE:
 889					showSnackbar(R.string.joining_conference, 0, null);
 890					break;
 891				case PASSWORD_REQUIRED:
 892					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
 893					break;
 894				case BANNED:
 895					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
 896					break;
 897				case MEMBERS_ONLY:
 898					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
 899					break;
 900				case KICKED:
 901					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
 902					break;
 903				case UNKNOWN:
 904					showSnackbar(R.string.conference_unknown_error, R.string.join, joinMuc);
 905					break;
 906				case SHUTDOWN:
 907					showSnackbar(R.string.conference_shutdown, R.string.join, joinMuc);
 908					break;
 909				default:
 910					break;
 911			}
 912		} else if (keychainUnlock == KEYCHAIN_UNLOCK_REQUIRED) {
 913			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
 914		} else if (mode == Conversation.MODE_SINGLE
 915				&& conversation.smpRequested()) {
 916			showSnackbar(R.string.smp_requested, R.string.verify, this.mAnswerSmpClickListener);
 917		} else if (mode == Conversation.MODE_SINGLE
 918				&& conversation.hasValidOtrSession()
 919				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
 920				&& (!conversation.isOtrFingerprintVerified())) {
 921			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
 922		} else {
 923			hideSnackbar();
 924		}
 925	}
 926
 927	public void updateMessages() {
 928		synchronized (this.messageList) {
 929			if (getView() == null) {
 930				return;
 931			}
 932			final ConversationActivity activity = (ConversationActivity) getActivity();
 933			if (this.conversation != null) {
 934				conversation.populateWithMessages(ConversationFragment.this.messageList);
 935				updatePgpMessages();
 936				updateSnackBar(conversation);
 937				updateStatusMessages();
 938				this.messageListAdapter.notifyDataSetChanged();
 939				updateChatMsgHint();
 940				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
 941					activity.sendReadMarkerIfNecessary(conversation);
 942				}
 943				this.updateSendButton();
 944			}
 945		}
 946	}
 947
 948	public void updatePgpMessages() {
 949		if (keychainUnlock != KEYCHAIN_UNLOCK_PENDING) {
 950			if (getLastPgpDecryptableMessage() != null
 951					&& !conversation.getAccount().getPgpDecryptionService().isRunning()) {
 952				keychainUnlock = KEYCHAIN_UNLOCK_REQUIRED;
 953			} else {
 954				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 955			}
 956		}
 957	}
 958
 959	@Nullable
 960	private Message getLastPgpDecryptableMessage() {
 961		for (final Message message : this.messageList) {
 962			if (message.getEncryption() == Message.ENCRYPTION_PGP
 963					&& (message.getStatus() == Message.STATUS_RECEIVED || message.getStatus() >= Message.STATUS_SEND)
 964					&& message.getTransferable() == null) {
 965				return message;
 966			}
 967		}
 968		return null;
 969	}
 970
 971	private void messageSent() {
 972		mEditMessage.setText("");
 973		updateChatMsgHint();
 974		new Handler().post(new Runnable() {
 975			@Override
 976			public void run() {
 977				int size = messageList.size();
 978				messagesView.setSelection(size - 1);
 979			}
 980		});
 981	}
 982
 983	public void setFocusOnInputField() {
 984		mEditMessage.requestFocus();
 985	}
 986
 987	enum SendButtonAction {TEXT, TAKE_PHOTO, SEND_LOCATION, RECORD_VOICE, CANCEL, CHOOSE_PICTURE}
 988
 989	private int getSendButtonImageResource(SendButtonAction action, Presence.Status status) {
 990		switch (action) {
 991			case TEXT:
 992				switch (status) {
 993					case CHAT:
 994					case ONLINE:
 995						return R.drawable.ic_send_text_online;
 996					case AWAY:
 997						return R.drawable.ic_send_text_away;
 998					case XA:
 999					case DND:
1000						return R.drawable.ic_send_text_dnd;
1001					default:
1002						return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1003				}
1004			case TAKE_PHOTO:
1005				switch (status) {
1006					case CHAT:
1007					case ONLINE:
1008						return R.drawable.ic_send_photo_online;
1009					case AWAY:
1010						return R.drawable.ic_send_photo_away;
1011					case XA:
1012					case DND:
1013						return R.drawable.ic_send_photo_dnd;
1014					default:
1015						return activity.getThemeResource(R.attr.ic_send_photo_offline, R.drawable.ic_send_photo_offline);
1016				}
1017			case RECORD_VOICE:
1018				switch (status) {
1019					case CHAT:
1020					case ONLINE:
1021						return R.drawable.ic_send_voice_online;
1022					case AWAY:
1023						return R.drawable.ic_send_voice_away;
1024					case XA:
1025					case DND:
1026						return R.drawable.ic_send_voice_dnd;
1027					default:
1028						return activity.getThemeResource(R.attr.ic_send_voice_offline, R.drawable.ic_send_voice_offline);
1029				}
1030			case SEND_LOCATION:
1031				switch (status) {
1032					case CHAT:
1033					case ONLINE:
1034						return R.drawable.ic_send_location_online;
1035					case AWAY:
1036						return R.drawable.ic_send_location_away;
1037					case XA:
1038					case DND:
1039						return R.drawable.ic_send_location_dnd;
1040					default:
1041						return activity.getThemeResource(R.attr.ic_send_location_offline, R.drawable.ic_send_location_offline);
1042				}
1043			case CANCEL:
1044				switch (status) {
1045					case CHAT:
1046					case ONLINE:
1047						return R.drawable.ic_send_cancel_online;
1048					case AWAY:
1049						return R.drawable.ic_send_cancel_away;
1050					case XA:
1051					case DND:
1052						return R.drawable.ic_send_cancel_dnd;
1053					default:
1054						return activity.getThemeResource(R.attr.ic_send_cancel_offline, R.drawable.ic_send_cancel_offline);
1055				}
1056			case CHOOSE_PICTURE:
1057				switch (status) {
1058					case CHAT:
1059					case ONLINE:
1060						return R.drawable.ic_send_picture_online;
1061					case AWAY:
1062						return R.drawable.ic_send_picture_away;
1063					case XA:
1064					case DND:
1065						return R.drawable.ic_send_picture_dnd;
1066					default:
1067						return activity.getThemeResource(R.attr.ic_send_picture_offline, R.drawable.ic_send_picture_offline);
1068				}
1069		}
1070		return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1071	}
1072
1073	public void updateSendButton() {
1074		final Conversation c = this.conversation;
1075		final SendButtonAction action;
1076		final Presence.Status status;
1077		final String text = this.mEditMessage == null ? "" : this.mEditMessage.getText().toString();
1078		final boolean empty = text.length() == 0;
1079		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
1080		if (c.getCorrectingMessage() != null && (empty || text.equals(c.getCorrectingMessage().getBody()))) {
1081			action = SendButtonAction.CANCEL;
1082		} else if (conference && !c.getAccount().httpUploadAvailable()) {
1083			if (empty && c.getNextCounterpart() != null) {
1084				action = SendButtonAction.CANCEL;
1085			} else {
1086				action = SendButtonAction.TEXT;
1087			}
1088		} else {
1089			if (empty) {
1090				if (conference && c.getNextCounterpart() != null) {
1091					action = SendButtonAction.CANCEL;
1092				} else {
1093					String setting = activity.getPreferences().getString("quick_action", "recent");
1094					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
1095						setting = "location";
1096					} else if (setting.equals("recent")) {
1097						setting = activity.getPreferences().getString("recently_used_quick_action", "text");
1098					}
1099					switch (setting) {
1100						case "photo":
1101							action = SendButtonAction.TAKE_PHOTO;
1102							break;
1103						case "location":
1104							action = SendButtonAction.SEND_LOCATION;
1105							break;
1106						case "voice":
1107							action = SendButtonAction.RECORD_VOICE;
1108							break;
1109						case "picture":
1110							action = SendButtonAction.CHOOSE_PICTURE;
1111							break;
1112						default:
1113							action = SendButtonAction.TEXT;
1114							break;
1115					}
1116				}
1117			} else {
1118				action = SendButtonAction.TEXT;
1119			}
1120		}
1121		if (activity.useSendButtonToIndicateStatus() && c != null
1122				&& c.getAccount().getStatus() == Account.State.ONLINE) {
1123			if (c.getMode() == Conversation.MODE_SINGLE) {
1124				status = c.getContact().getMostAvailableStatus();
1125			} else {
1126				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1127			}
1128		} else {
1129			status = Presence.Status.OFFLINE;
1130		}
1131		this.mSendButton.setTag(action);
1132		this.mSendButton.setImageResource(getSendButtonImageResource(action, status));
1133	}
1134
1135	protected void updateStatusMessages() {
1136		synchronized (this.messageList) {
1137			if (showLoadMoreMessages(conversation)) {
1138				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1139			}
1140			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1141				ChatState state = conversation.getIncomingChatState();
1142				if (state == ChatState.COMPOSING) {
1143					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1144				} else if (state == ChatState.PAUSED) {
1145					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1146				} else {
1147					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1148						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1149							return;
1150						} else {
1151							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1152								this.messageList.add(i + 1,
1153										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1154								return;
1155							}
1156						}
1157					}
1158				}
1159			}
1160		}
1161	}
1162
1163	private boolean showLoadMoreMessages(final Conversation c) {
1164		final boolean mam = hasMamSupport(c);
1165		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
1166		return mam && (c.getLastClearHistory() != 0  || (c.countMessages() == 0 && c.hasMessagesLeftOnServer()  && !service.queryInProgress(c)));
1167	}
1168
1169	private boolean hasMamSupport(final Conversation c) {
1170		if (c.getMode() == Conversation.MODE_SINGLE) {
1171			final XmppConnection connection = c.getAccount().getXmppConnection();
1172			return connection != null && connection.getFeatures().mam();
1173		} else {
1174			return c.getMucOptions().mamSupport();
1175		}
1176	}
1177
1178	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
1179		snackbar.setVisibility(View.VISIBLE);
1180		snackbar.setOnClickListener(null);
1181		snackbarMessage.setText(message);
1182		snackbarMessage.setOnClickListener(null);
1183		snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
1184		if (action != 0) {
1185			snackbarAction.setText(action);
1186		}
1187		snackbarAction.setOnClickListener(clickListener);
1188	}
1189
1190	protected void hideSnackbar() {
1191		snackbar.setVisibility(View.GONE);
1192	}
1193
1194	protected void sendPlainTextMessage(Message message) {
1195		ConversationActivity activity = (ConversationActivity) getActivity();
1196		activity.xmppConnectionService.sendMessage(message);
1197		messageSent();
1198	}
1199
1200	protected void sendPgpMessage(final Message message) {
1201		final ConversationActivity activity = (ConversationActivity) getActivity();
1202		final XmppConnectionService xmppService = activity.xmppConnectionService;
1203		final Contact contact = message.getConversation().getContact();
1204		if (!activity.hasPgp()) {
1205			activity.showInstallPgpDialog();
1206			return;
1207		}
1208		if (conversation.getAccount().getPgpSignature() == null) {
1209			activity.announcePgp(conversation.getAccount(), conversation, activity.onOpenPGPKeyPublished);
1210			return;
1211		}
1212		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1213			if (contact.getPgpKeyId() != 0) {
1214				xmppService.getPgpEngine().hasKey(contact,
1215						new UiCallback<Contact>() {
1216
1217							@Override
1218							public void userInputRequried(PendingIntent pi,
1219														  Contact contact) {
1220								activity.runIntent(
1221										pi,
1222										ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
1223							}
1224
1225							@Override
1226							public void success(Contact contact) {
1227								messageSent();
1228								activity.encryptTextMessage(message);
1229							}
1230
1231							@Override
1232							public void error(int error, Contact contact) {
1233								System.out.println();
1234							}
1235						});
1236
1237			} else {
1238				showNoPGPKeyDialog(false,
1239						new DialogInterface.OnClickListener() {
1240
1241							@Override
1242							public void onClick(DialogInterface dialog,
1243												int which) {
1244								conversation
1245										.setNextEncryption(Message.ENCRYPTION_NONE);
1246								xmppService.databaseBackend
1247										.updateConversation(conversation);
1248								message.setEncryption(Message.ENCRYPTION_NONE);
1249								xmppService.sendMessage(message);
1250								messageSent();
1251							}
1252						});
1253			}
1254		} else {
1255			if (conversation.getMucOptions().pgpKeysInUse()) {
1256				if (!conversation.getMucOptions().everybodyHasKeys()) {
1257					Toast warning = Toast
1258							.makeText(getActivity(),
1259									R.string.missing_public_keys,
1260									Toast.LENGTH_LONG);
1261					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1262					warning.show();
1263				}
1264				activity.encryptTextMessage(message);
1265				messageSent();
1266			} else {
1267				showNoPGPKeyDialog(true,
1268						new DialogInterface.OnClickListener() {
1269
1270							@Override
1271							public void onClick(DialogInterface dialog,
1272												int which) {
1273								conversation
1274										.setNextEncryption(Message.ENCRYPTION_NONE);
1275								message.setEncryption(Message.ENCRYPTION_NONE);
1276								xmppService.databaseBackend
1277										.updateConversation(conversation);
1278								xmppService.sendMessage(message);
1279								messageSent();
1280							}
1281						});
1282			}
1283		}
1284	}
1285
1286	public void showNoPGPKeyDialog(boolean plural,
1287								   DialogInterface.OnClickListener listener) {
1288		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1289		builder.setIconAttribute(android.R.attr.alertDialogIcon);
1290		if (plural) {
1291			builder.setTitle(getString(R.string.no_pgp_keys));
1292			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
1293		} else {
1294			builder.setTitle(getString(R.string.no_pgp_key));
1295			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
1296		}
1297		builder.setNegativeButton(getString(R.string.cancel), null);
1298		builder.setPositiveButton(getString(R.string.send_unencrypted),
1299				listener);
1300		builder.create().show();
1301	}
1302
1303	protected void sendAxolotlMessage(final Message message) {
1304		final ConversationActivity activity = (ConversationActivity) getActivity();
1305		final XmppConnectionService xmppService = activity.xmppConnectionService;
1306		xmppService.sendMessage(message);
1307		messageSent();
1308	}
1309
1310	protected void sendOtrMessage(final Message message) {
1311		final ConversationActivity activity = (ConversationActivity) getActivity();
1312		final XmppConnectionService xmppService = activity.xmppConnectionService;
1313		activity.selectPresence(message.getConversation(),
1314				new OnPresenceSelected() {
1315
1316					@Override
1317					public void onPresenceSelected() {
1318						message.setCounterpart(conversation.getNextCounterpart());
1319						xmppService.sendMessage(message);
1320						messageSent();
1321					}
1322				});
1323	}
1324
1325	public void appendText(String text) {
1326		if (text == null) {
1327			return;
1328		}
1329		String previous = this.mEditMessage.getText().toString();
1330		if (previous.length() != 0 && !previous.endsWith(" ")) {
1331			text = " " + text;
1332		}
1333		this.mEditMessage.append(text);
1334	}
1335
1336	@Override
1337	public boolean onEnterPressed() {
1338		if (activity.enterIsSend()) {
1339			sendMessage();
1340			return true;
1341		} else {
1342			return false;
1343		}
1344	}
1345
1346	@Override
1347	public void onTypingStarted() {
1348		Account.State status = conversation.getAccount().getStatus();
1349		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
1350			activity.xmppConnectionService.sendChatState(conversation);
1351		}
1352		activity.hideConversationsOverview();
1353		updateSendButton();
1354	}
1355
1356	@Override
1357	public void onTypingStopped() {
1358		Account.State status = conversation.getAccount().getStatus();
1359		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
1360			activity.xmppConnectionService.sendChatState(conversation);
1361		}
1362	}
1363
1364	@Override
1365	public void onTextDeleted() {
1366		Account.State status = conversation.getAccount().getStatus();
1367		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1368			activity.xmppConnectionService.sendChatState(conversation);
1369		}
1370		updateSendButton();
1371	}
1372
1373	@Override
1374	public void onTextChanged() {
1375		if (conversation != null && conversation.getCorrectingMessage() != null) {
1376			updateSendButton();
1377		}
1378	}
1379
1380	private int completionIndex = 0;
1381	private int lastCompletionLength = 0;
1382	private String incomplete;
1383	private int lastCompletionCursor;
1384	private boolean firstWord = false;
1385
1386	@Override
1387	public boolean onTabPressed(boolean repeated) {
1388		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
1389			return false;
1390		}
1391		if (repeated) {
1392			completionIndex++;
1393		} else {
1394			lastCompletionLength = 0;
1395			completionIndex = 0;
1396			final String content = mEditMessage.getText().toString();
1397			lastCompletionCursor = mEditMessage.getSelectionEnd();
1398			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ",lastCompletionCursor-1) + 1 : 0;
1399			firstWord = start == 0;
1400			incomplete = content.substring(start,lastCompletionCursor);
1401		}
1402		List<String> completions = new ArrayList<>();
1403		for(MucOptions.User user : conversation.getMucOptions().getUsers()) {
1404			if (user.getName().startsWith(incomplete)) {
1405				completions.add(user.getName()+(firstWord ? ": " : " "));
1406			}
1407		}
1408		Collections.sort(completions);
1409		if (completions.size() > completionIndex) {
1410			String completion = completions.get(completionIndex).substring(incomplete.length());
1411			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1412			mEditMessage.getEditableText().insert(lastCompletionCursor, completion);
1413			lastCompletionLength = completion.length();
1414		} else {
1415			completionIndex = -1;
1416			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1417			lastCompletionLength = 0;
1418		}
1419		return true;
1420	}
1421
1422	@Override
1423	public void onActivityResult(int requestCode, int resultCode,
1424	                                final Intent data) {
1425		if (resultCode == Activity.RESULT_OK) {
1426			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1427				activity.getSelectedConversation().getAccount().getPgpDecryptionService().onKeychainUnlocked();
1428				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1429				updatePgpMessages();
1430			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_TEXT) {
1431				final String body = mEditMessage.getText().toString();
1432				Message message = new Message(conversation, body, conversation.getNextEncryption());
1433				sendAxolotlMessage(message);
1434			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_MENU) {
1435				int choice = data.getIntExtra("choice", ConversationActivity.ATTACHMENT_CHOICE_INVALID);
1436				activity.selectPresenceToAttachFile(choice, conversation.getNextEncryption());
1437			}
1438		} else {
1439			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1440				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1441				updatePgpMessages();
1442			}
1443		}
1444	}
1445
1446}