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