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 = new Intent(activity, EditAccountActivity.class);
 478					intent.putExtra("jid", account.getJid().toBareJid().toString());
 479					intent.putExtra("fingerprint", message.getFingerprint());
 480					startActivity(intent);
 481				}
 482			}
 483		});
 484		messageListAdapter
 485				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
 486
 487					@Override
 488					public void onContactPictureLongClicked(Message message) {
 489						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 490							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 491								if (message.getCounterpart() != null) {
 492									String user = message.getCounterpart().getResourcepart();
 493									if (user != null) {
 494										if (message.getConversation().getMucOptions().isUserInRoom(user)) {
 495											privateMessageWith(message.getCounterpart());
 496										} else {
 497											Toast.makeText(activity, activity.getString(R.string.user_has_left_conference, user), Toast.LENGTH_SHORT).show();
 498										}
 499									}
 500								}
 501							}
 502						} else {
 503							activity.showQrCode();
 504						}
 505					}
 506				});
 507		messagesView.setAdapter(messageListAdapter);
 508
 509		registerForContextMenu(messagesView);
 510
 511		return view;
 512	}
 513
 514	@Override
 515	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 516		synchronized (this.messageList) {
 517			super.onCreateContextMenu(menu, v, menuInfo);
 518			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 519			this.selectedMessage = this.messageList.get(acmi.position);
 520			populateContextMenu(menu);
 521		}
 522	}
 523
 524	private void populateContextMenu(ContextMenu menu) {
 525		final Message m = this.selectedMessage;
 526		final Transferable t = m.getTransferable();
 527		Message relevantForCorrection = m;
 528		while(relevantForCorrection.mergeable(relevantForCorrection.next())) {
 529			relevantForCorrection = relevantForCorrection.next();
 530		}
 531		if (m.getType() != Message.TYPE_STATUS) {
 532			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 533					&& m.getType() != Message.TYPE_PRIVATE
 534					&& t == null;
 535			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 536			menu.setHeaderTitle(R.string.message_options);
 537			MenuItem copyText = menu.findItem(R.id.copy_text);
 538			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 539			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 540			MenuItem shareWith = menu.findItem(R.id.share_with);
 541			MenuItem sendAgain = menu.findItem(R.id.send_again);
 542			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 543			MenuItem downloadFile = menu.findItem(R.id.download_file);
 544			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 545			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 546			if (!treatAsFile
 547					&& !GeoHelper.isGeoUri(m.getBody())
 548					&& m.treatAsDownloadable() != Message.Decision.MUST) {
 549				copyText.setVisible(true);
 550			}
 551			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 552				retryDecryption.setVisible(true);
 553			}
 554			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 555					&& relevantForCorrection.isLastCorrectableMessage()) {
 556				correctMessage.setVisible(true);
 557			}
 558			if (treatAsFile || (GeoHelper.isGeoUri(m.getBody()))) {
 559				shareWith.setVisible(true);
 560			}
 561			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 562				sendAgain.setVisible(true);
 563			}
 564			if (m.hasFileOnRemoteHost()
 565					|| GeoHelper.isGeoUri(m.getBody())
 566					|| m.treatAsDownloadable() == Message.Decision.MUST
 567					|| (t != null && t instanceof HttpDownloadConnection)) {
 568				copyUrl.setVisible(true);
 569			}
 570			if ((m.getType() == Message.TYPE_TEXT && t == null && m.treatAsDownloadable() != Message.Decision.NEVER)
 571					|| (m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())){
 572				downloadFile.setVisible(true);
 573				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 574			}
 575			if ((t != null && !(t instanceof TransferablePlaceholder))
 576					|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
 577					|| m.getStatus() == Message.STATUS_OFFERED))) {
 578				cancelTransmission.setVisible(true);
 579			}
 580			if (treatAsFile) {
 581				deleteFile.setVisible(true);
 582				deleteFile.setTitle(activity.getString(R.string.delete_x_file,UIHelper.getFileDescriptionString(activity, m)));
 583			}
 584		}
 585	}
 586
 587	@Override
 588	public boolean onContextItemSelected(MenuItem item) {
 589		switch (item.getItemId()) {
 590			case R.id.share_with:
 591				shareWith(selectedMessage);
 592				return true;
 593			case R.id.copy_text:
 594				copyText(selectedMessage);
 595				return true;
 596			case R.id.correct_message:
 597				correctMessage(selectedMessage);
 598				return true;
 599			case R.id.send_again:
 600				resendMessage(selectedMessage);
 601				return true;
 602			case R.id.copy_url:
 603				copyUrl(selectedMessage);
 604				return true;
 605			case R.id.download_file:
 606				downloadFile(selectedMessage);
 607				return true;
 608			case R.id.cancel_transmission:
 609				cancelTransmission(selectedMessage);
 610				return true;
 611			case R.id.retry_decryption:
 612				retryDecryption(selectedMessage);
 613				return true;
 614			case R.id.delete_file:
 615				deleteFile(selectedMessage);
 616				return true;
 617			default:
 618				return super.onContextItemSelected(item);
 619		}
 620	}
 621
 622	private void shareWith(Message message) {
 623		Intent shareIntent = new Intent();
 624		shareIntent.setAction(Intent.ACTION_SEND);
 625		if (GeoHelper.isGeoUri(message.getBody())) {
 626			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
 627			shareIntent.setType("text/plain");
 628		} else {
 629			shareIntent.putExtra(Intent.EXTRA_STREAM,
 630					activity.xmppConnectionService.getFileBackend()
 631							.getJingleFileUri(message));
 632			shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 633			String mime = message.getMimeType();
 634			if (mime == null) {
 635				mime = "*/*";
 636			}
 637			shareIntent.setType(mime);
 638		}
 639		try {
 640			activity.startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
 641		} catch (ActivityNotFoundException e) {
 642			//This should happen only on faulty androids because normally chooser is always available
 643			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 644		}
 645	}
 646
 647	private void copyText(Message message) {
 648		if (activity.copyTextToClipboard(message.getMergedBody(),
 649				R.string.message_text)) {
 650			Toast.makeText(activity, R.string.message_copied_to_clipboard,
 651					Toast.LENGTH_SHORT).show();
 652		}
 653	}
 654
 655	private void deleteFile(Message message) {
 656		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
 657			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 658			activity.updateConversationList();
 659			updateMessages();
 660		}
 661	}
 662
 663	private void resendMessage(Message message) {
 664		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
 665			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 666			if (!file.exists()) {
 667				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 668				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 669				activity.updateConversationList();
 670				updateMessages();
 671				return;
 672			}
 673		}
 674		activity.xmppConnectionService.resendFailedMessages(message);
 675	}
 676
 677	private void copyUrl(Message message) {
 678		final String url;
 679		final int resId;
 680		if (GeoHelper.isGeoUri(message.getBody())) {
 681			resId = R.string.location;
 682			url = message.getBody();
 683		} else if (message.hasFileOnRemoteHost()) {
 684			resId = R.string.file_url;
 685			url = message.getFileParams().url.toString();
 686		} else {
 687			url = message.getBody().trim();
 688			resId = R.string.file_url;
 689		}
 690		if (activity.copyTextToClipboard(url, resId)) {
 691			Toast.makeText(activity, R.string.url_copied_to_clipboard,
 692					Toast.LENGTH_SHORT).show();
 693		}
 694	}
 695
 696	private void downloadFile(Message message) {
 697		activity.xmppConnectionService.getHttpConnectionManager()
 698				.createNewDownloadConnection(message,true);
 699	}
 700
 701	private void cancelTransmission(Message message) {
 702		Transferable transferable = message.getTransferable();
 703		if (transferable != null) {
 704			transferable.cancel();
 705		} else {
 706			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
 707		}
 708	}
 709
 710	private void retryDecryption(Message message) {
 711		message.setEncryption(Message.ENCRYPTION_PGP);
 712		activity.updateConversationList();
 713		updateMessages();
 714		conversation.getAccount().getPgpDecryptionService().add(message);
 715	}
 716
 717	protected void privateMessageWith(final Jid counterpart) {
 718		this.mEditMessage.setText("");
 719		this.conversation.setNextCounterpart(counterpart);
 720		updateChatMsgHint();
 721		updateSendButton();
 722	}
 723
 724	private void correctMessage(Message message) {
 725		while(message.mergeable(message.next())) {
 726			message = message.next();
 727		}
 728		this.conversation.setCorrectingMessage(message);
 729		this.mEditMessage.getEditableText().clear();
 730		this.mEditMessage.getEditableText().append(message.getBody());
 731
 732	}
 733
 734	protected void highlightInConference(String nick) {
 735		String oldString = mEditMessage.getText().toString().trim();
 736		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
 737			mEditMessage.getText().insert(0, nick + ": ");
 738		} else {
 739			if (mEditMessage.getText().charAt(
 740					mEditMessage.getSelectionStart() - 1) != ' ') {
 741				nick = " " + nick;
 742			}
 743			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
 744					nick + " ");
 745		}
 746	}
 747
 748	@Override
 749	public void onStop() {
 750		super.onStop();
 751		if (this.conversation != null) {
 752			final String msg = mEditMessage.getText().toString();
 753			this.conversation.setNextMessage(msg);
 754			updateChatState(this.conversation, msg);
 755		}
 756	}
 757
 758	private void updateChatState(final Conversation conversation, final String msg) {
 759		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
 760		Account.State status = conversation.getAccount().getStatus();
 761		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
 762			activity.xmppConnectionService.sendChatState(conversation);
 763		}
 764	}
 765
 766	public void reInit(Conversation conversation) {
 767		if (conversation == null) {
 768			return;
 769		}
 770		this.activity = (ConversationActivity) getActivity();
 771		setupIme();
 772		if (this.conversation != null) {
 773			final String msg = mEditMessage.getText().toString();
 774			this.conversation.setNextMessage(msg);
 775			if (this.conversation != conversation) {
 776				updateChatState(this.conversation, msg);
 777			}
 778			this.conversation.trim();
 779		}
 780
 781		this.keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 782		this.conversation = conversation;
 783		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating();
 784		this.mEditMessage.setEnabled(canWrite);
 785		this.mSendButton.setEnabled(canWrite);
 786		this.mEditMessage.setKeyboardListener(null);
 787		this.mEditMessage.setText("");
 788		this.mEditMessage.append(this.conversation.getNextMessage());
 789		this.mEditMessage.setKeyboardListener(this);
 790		messageListAdapter.updatePreferences();
 791		this.messagesView.setAdapter(messageListAdapter);
 792		updateMessages();
 793		this.messagesLoaded = true;
 794		int size = this.messageList.size();
 795		if (size > 0) {
 796			messagesView.setSelection(size - 1);
 797		}
 798	}
 799
 800	private OnClickListener mEnableAccountListener = new OnClickListener() {
 801		@Override
 802		public void onClick(View v) {
 803			final Account account = conversation == null ? null : conversation.getAccount();
 804			if (account != null) {
 805				account.setOption(Account.OPTION_DISABLED, false);
 806				activity.xmppConnectionService.updateAccount(account);
 807			}
 808		}
 809	};
 810
 811	private OnClickListener mUnblockClickListener = new OnClickListener() {
 812		@Override
 813		public void onClick(final View v) {
 814			v.post(new Runnable() {
 815				@Override
 816				public void run() {
 817					v.setVisibility(View.INVISIBLE);
 818				}
 819			});
 820			if (conversation.isDomainBlocked()) {
 821				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
 822			} else {
 823				activity.unblockConversation(conversation);
 824			}
 825		}
 826	};
 827
 828	private OnClickListener mAddBackClickListener = new OnClickListener() {
 829
 830		@Override
 831		public void onClick(View v) {
 832			final Contact contact = conversation == null ? null : conversation.getContact();
 833			if (contact != null) {
 834				activity.xmppConnectionService.createContact(contact);
 835				activity.switchToContactDetails(contact);
 836			}
 837		}
 838	};
 839
 840	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
 841		@Override
 842		public void onClick(View view) {
 843			Intent intent = new Intent(activity, VerifyOTRActivity.class);
 844			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
 845			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
 846			intent.putExtra(VerifyOTRActivity.EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 847			intent.putExtra("mode", VerifyOTRActivity.MODE_ANSWER_QUESTION);
 848			startActivity(intent);
 849		}
 850	};
 851
 852	private void updateSnackBar(final Conversation conversation) {
 853		final Account account = conversation.getAccount();
 854		final Contact contact = conversation.getContact();
 855		final int mode = conversation.getMode();
 856		if (account.getStatus() == Account.State.DISABLED) {
 857			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
 858		} else if (conversation.isBlocked()) {
 859			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
 860		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
 861			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener);
 862		} else if (mode == Conversation.MODE_MULTI
 863				&& !conversation.getMucOptions().online()
 864				&& account.getStatus() == Account.State.ONLINE) {
 865			switch (conversation.getMucOptions().getError()) {
 866				case NICK_IN_USE:
 867					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
 868					break;
 869				case NO_RESPONSE:
 870					showSnackbar(R.string.joining_conference, 0, null);
 871					break;
 872				case PASSWORD_REQUIRED:
 873					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
 874					break;
 875				case BANNED:
 876					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
 877					break;
 878				case MEMBERS_ONLY:
 879					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
 880					break;
 881				case KICKED:
 882					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
 883					break;
 884				case UNKNOWN:
 885					showSnackbar(R.string.conference_unknown_error, R.string.join, joinMuc);
 886					break;
 887				case SHUTDOWN:
 888					showSnackbar(R.string.conference_shutdown, R.string.join, joinMuc);
 889					break;
 890				default:
 891					break;
 892			}
 893		} else if (keychainUnlock == KEYCHAIN_UNLOCK_REQUIRED) {
 894			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
 895		} else if (mode == Conversation.MODE_SINGLE
 896				&& conversation.smpRequested()) {
 897			showSnackbar(R.string.smp_requested, R.string.verify, this.mAnswerSmpClickListener);
 898		} else if (mode == Conversation.MODE_SINGLE
 899				&& conversation.hasValidOtrSession()
 900				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
 901				&& (!conversation.isOtrFingerprintVerified())) {
 902			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
 903		} else {
 904			hideSnackbar();
 905		}
 906	}
 907
 908	public void updateMessages() {
 909		synchronized (this.messageList) {
 910			if (getView() == null) {
 911				return;
 912			}
 913			final ConversationActivity activity = (ConversationActivity) getActivity();
 914			if (this.conversation != null) {
 915				conversation.populateWithMessages(ConversationFragment.this.messageList);
 916				updatePgpMessages();
 917				updateSnackBar(conversation);
 918				updateStatusMessages();
 919				this.messageListAdapter.notifyDataSetChanged();
 920				updateChatMsgHint();
 921				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
 922					activity.sendReadMarkerIfNecessary(conversation);
 923				}
 924				this.updateSendButton();
 925			}
 926		}
 927	}
 928
 929	public void updatePgpMessages() {
 930		if (keychainUnlock != KEYCHAIN_UNLOCK_PENDING) {
 931			if (getLastPgpDecryptableMessage() != null
 932					&& !conversation.getAccount().getPgpDecryptionService().isRunning()) {
 933				keychainUnlock = KEYCHAIN_UNLOCK_REQUIRED;
 934			} else {
 935				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
 936			}
 937		}
 938	}
 939
 940	@Nullable
 941	private Message getLastPgpDecryptableMessage() {
 942		for (final Message message : this.messageList) {
 943			if (message.getEncryption() == Message.ENCRYPTION_PGP
 944					&& (message.getStatus() == Message.STATUS_RECEIVED || message.getStatus() >= Message.STATUS_SEND)
 945					&& message.getTransferable() == null) {
 946				return message;
 947			}
 948		}
 949		return null;
 950	}
 951
 952	private void messageSent() {
 953		int size = this.messageList.size();
 954		messagesView.setSelection(size - 1);
 955		mEditMessage.setText("");
 956		updateChatMsgHint();
 957	}
 958
 959	public void setFocusOnInputField() {
 960		mEditMessage.requestFocus();
 961	}
 962
 963	enum SendButtonAction {TEXT, TAKE_PHOTO, SEND_LOCATION, RECORD_VOICE, CANCEL, CHOOSE_PICTURE}
 964
 965	private int getSendButtonImageResource(SendButtonAction action, Presence.Status status) {
 966		switch (action) {
 967			case TEXT:
 968				switch (status) {
 969					case CHAT:
 970					case ONLINE:
 971						return R.drawable.ic_send_text_online;
 972					case AWAY:
 973						return R.drawable.ic_send_text_away;
 974					case XA:
 975					case DND:
 976						return R.drawable.ic_send_text_dnd;
 977					default:
 978						return R.drawable.ic_send_text_offline;
 979				}
 980			case TAKE_PHOTO:
 981				switch (status) {
 982					case CHAT:
 983					case ONLINE:
 984						return R.drawable.ic_send_photo_online;
 985					case AWAY:
 986						return R.drawable.ic_send_photo_away;
 987					case XA:
 988					case DND:
 989						return R.drawable.ic_send_photo_dnd;
 990					default:
 991						return R.drawable.ic_send_photo_offline;
 992				}
 993			case RECORD_VOICE:
 994				switch (status) {
 995					case CHAT:
 996					case ONLINE:
 997						return R.drawable.ic_send_voice_online;
 998					case AWAY:
 999						return R.drawable.ic_send_voice_away;
1000					case XA:
1001					case DND:
1002						return R.drawable.ic_send_voice_dnd;
1003					default:
1004						return R.drawable.ic_send_voice_offline;
1005				}
1006			case SEND_LOCATION:
1007				switch (status) {
1008					case CHAT:
1009					case ONLINE:
1010						return R.drawable.ic_send_location_online;
1011					case AWAY:
1012						return R.drawable.ic_send_location_away;
1013					case XA:
1014					case DND:
1015						return R.drawable.ic_send_location_dnd;
1016					default:
1017						return R.drawable.ic_send_location_offline;
1018				}
1019			case CANCEL:
1020				switch (status) {
1021					case CHAT:
1022					case ONLINE:
1023						return R.drawable.ic_send_cancel_online;
1024					case AWAY:
1025						return R.drawable.ic_send_cancel_away;
1026					case XA:
1027					case DND:
1028						return R.drawable.ic_send_cancel_dnd;
1029					default:
1030						return R.drawable.ic_send_cancel_offline;
1031				}
1032			case CHOOSE_PICTURE:
1033				switch (status) {
1034					case CHAT:
1035					case ONLINE:
1036						return R.drawable.ic_send_picture_online;
1037					case AWAY:
1038						return R.drawable.ic_send_picture_away;
1039					case XA:
1040					case DND:
1041						return R.drawable.ic_send_picture_dnd;
1042					default:
1043						return R.drawable.ic_send_picture_offline;
1044				}
1045		}
1046		return R.drawable.ic_send_text_offline;
1047	}
1048
1049	public void updateSendButton() {
1050		final Conversation c = this.conversation;
1051		final SendButtonAction action;
1052		final Presence.Status status;
1053		final String text = this.mEditMessage == null ? "" : this.mEditMessage.getText().toString();
1054		final boolean empty = text.length() == 0;
1055		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
1056		if (c.getCorrectingMessage() != null && (empty || text.equals(c.getCorrectingMessage().getBody()))) {
1057			action = SendButtonAction.CANCEL;
1058		} else if (conference && !c.getAccount().httpUploadAvailable()) {
1059			if (empty && c.getNextCounterpart() != null) {
1060				action = SendButtonAction.CANCEL;
1061			} else {
1062				action = SendButtonAction.TEXT;
1063			}
1064		} else {
1065			if (empty) {
1066				if (conference && c.getNextCounterpart() != null) {
1067					action = SendButtonAction.CANCEL;
1068				} else {
1069					String setting = activity.getPreferences().getString("quick_action", "recent");
1070					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
1071						setting = "location";
1072					} else if (setting.equals("recent")) {
1073						setting = activity.getPreferences().getString("recently_used_quick_action", "text");
1074					}
1075					switch (setting) {
1076						case "photo":
1077							action = SendButtonAction.TAKE_PHOTO;
1078							break;
1079						case "location":
1080							action = SendButtonAction.SEND_LOCATION;
1081							break;
1082						case "voice":
1083							action = SendButtonAction.RECORD_VOICE;
1084							break;
1085						case "picture":
1086							action = SendButtonAction.CHOOSE_PICTURE;
1087							break;
1088						default:
1089							action = SendButtonAction.TEXT;
1090							break;
1091					}
1092				}
1093			} else {
1094				action = SendButtonAction.TEXT;
1095			}
1096		}
1097		if (activity.useSendButtonToIndicateStatus() && c != null
1098				&& c.getAccount().getStatus() == Account.State.ONLINE) {
1099			if (c.getMode() == Conversation.MODE_SINGLE) {
1100				status = c.getContact().getMostAvailableStatus();
1101			} else {
1102				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1103			}
1104		} else {
1105			status = Presence.Status.OFFLINE;
1106		}
1107		this.mSendButton.setTag(action);
1108		this.mSendButton.setImageResource(getSendButtonImageResource(action, status));
1109	}
1110
1111	protected void updateStatusMessages() {
1112		synchronized (this.messageList) {
1113			if (showLoadMoreMessages(conversation)) {
1114				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1115			}
1116			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1117				ChatState state = conversation.getIncomingChatState();
1118				if (state == ChatState.COMPOSING) {
1119					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1120				} else if (state == ChatState.PAUSED) {
1121					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1122				} else {
1123					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1124						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1125							return;
1126						} else {
1127							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1128								this.messageList.add(i + 1,
1129										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1130								return;
1131							}
1132						}
1133					}
1134				}
1135			}
1136		}
1137	}
1138
1139	private boolean showLoadMoreMessages(final Conversation c) {
1140		final boolean mam = hasMamSupport(c);
1141		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
1142		return mam && (c.getLastClearHistory() != 0  || (c.countMessages() == 0 && c.hasMessagesLeftOnServer()  && !service.queryInProgress(c)));
1143	}
1144
1145	private boolean hasMamSupport(final Conversation c) {
1146		if (c.getMode() == Conversation.MODE_SINGLE) {
1147			final XmppConnection connection = c.getAccount().getXmppConnection();
1148			return connection != null && connection.getFeatures().mam();
1149		} else {
1150			return c.getMucOptions().mamSupport();
1151		}
1152	}
1153
1154	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
1155		snackbar.setVisibility(View.VISIBLE);
1156		snackbar.setOnClickListener(null);
1157		snackbarMessage.setText(message);
1158		snackbarMessage.setOnClickListener(null);
1159		snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
1160		if (action != 0) {
1161			snackbarAction.setText(action);
1162		}
1163		snackbarAction.setOnClickListener(clickListener);
1164	}
1165
1166	protected void hideSnackbar() {
1167		snackbar.setVisibility(View.GONE);
1168	}
1169
1170	protected void sendPlainTextMessage(Message message) {
1171		ConversationActivity activity = (ConversationActivity) getActivity();
1172		activity.xmppConnectionService.sendMessage(message);
1173		messageSent();
1174	}
1175
1176	protected void sendPgpMessage(final Message message) {
1177		final ConversationActivity activity = (ConversationActivity) getActivity();
1178		final XmppConnectionService xmppService = activity.xmppConnectionService;
1179		final Contact contact = message.getConversation().getContact();
1180		if (!activity.hasPgp()) {
1181			activity.showInstallPgpDialog();
1182			return;
1183		}
1184		if (conversation.getAccount().getPgpSignature() == null) {
1185			activity.announcePgp(conversation.getAccount(), conversation);
1186			return;
1187		}
1188		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1189			if (contact.getPgpKeyId() != 0) {
1190				xmppService.getPgpEngine().hasKey(contact,
1191						new UiCallback<Contact>() {
1192
1193							@Override
1194							public void userInputRequried(PendingIntent pi,
1195														  Contact contact) {
1196								activity.runIntent(
1197										pi,
1198										ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
1199							}
1200
1201							@Override
1202							public void success(Contact contact) {
1203								messageSent();
1204								activity.encryptTextMessage(message);
1205							}
1206
1207							@Override
1208							public void error(int error, Contact contact) {
1209								System.out.println();
1210							}
1211						});
1212
1213			} else {
1214				showNoPGPKeyDialog(false,
1215						new DialogInterface.OnClickListener() {
1216
1217							@Override
1218							public void onClick(DialogInterface dialog,
1219												int which) {
1220								conversation
1221										.setNextEncryption(Message.ENCRYPTION_NONE);
1222								xmppService.databaseBackend
1223										.updateConversation(conversation);
1224								message.setEncryption(Message.ENCRYPTION_NONE);
1225								xmppService.sendMessage(message);
1226								messageSent();
1227							}
1228						});
1229			}
1230		} else {
1231			if (conversation.getMucOptions().pgpKeysInUse()) {
1232				if (!conversation.getMucOptions().everybodyHasKeys()) {
1233					Toast warning = Toast
1234							.makeText(getActivity(),
1235									R.string.missing_public_keys,
1236									Toast.LENGTH_LONG);
1237					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1238					warning.show();
1239				}
1240				activity.encryptTextMessage(message);
1241				messageSent();
1242			} else {
1243				showNoPGPKeyDialog(true,
1244						new DialogInterface.OnClickListener() {
1245
1246							@Override
1247							public void onClick(DialogInterface dialog,
1248												int which) {
1249								conversation
1250										.setNextEncryption(Message.ENCRYPTION_NONE);
1251								message.setEncryption(Message.ENCRYPTION_NONE);
1252								xmppService.databaseBackend
1253										.updateConversation(conversation);
1254								xmppService.sendMessage(message);
1255								messageSent();
1256							}
1257						});
1258			}
1259		}
1260	}
1261
1262	public void showNoPGPKeyDialog(boolean plural,
1263								   DialogInterface.OnClickListener listener) {
1264		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1265		builder.setIconAttribute(android.R.attr.alertDialogIcon);
1266		if (plural) {
1267			builder.setTitle(getString(R.string.no_pgp_keys));
1268			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
1269		} else {
1270			builder.setTitle(getString(R.string.no_pgp_key));
1271			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
1272		}
1273		builder.setNegativeButton(getString(R.string.cancel), null);
1274		builder.setPositiveButton(getString(R.string.send_unencrypted),
1275				listener);
1276		builder.create().show();
1277	}
1278
1279	protected void sendAxolotlMessage(final Message message) {
1280		final ConversationActivity activity = (ConversationActivity) getActivity();
1281		final XmppConnectionService xmppService = activity.xmppConnectionService;
1282		xmppService.sendMessage(message);
1283		messageSent();
1284	}
1285
1286	protected void sendOtrMessage(final Message message) {
1287		final ConversationActivity activity = (ConversationActivity) getActivity();
1288		final XmppConnectionService xmppService = activity.xmppConnectionService;
1289		activity.selectPresence(message.getConversation(),
1290				new OnPresenceSelected() {
1291
1292					@Override
1293					public void onPresenceSelected() {
1294						message.setCounterpart(conversation.getNextCounterpart());
1295						xmppService.sendMessage(message);
1296						messageSent();
1297					}
1298				});
1299	}
1300
1301	public void appendText(String text) {
1302		if (text == null) {
1303			return;
1304		}
1305		String previous = this.mEditMessage.getText().toString();
1306		if (previous.length() != 0 && !previous.endsWith(" ")) {
1307			text = " " + text;
1308		}
1309		this.mEditMessage.append(text);
1310	}
1311
1312	@Override
1313	public boolean onEnterPressed() {
1314		if (activity.enterIsSend()) {
1315			sendMessage();
1316			return true;
1317		} else {
1318			return false;
1319		}
1320	}
1321
1322	@Override
1323	public void onTypingStarted() {
1324		Account.State status = conversation.getAccount().getStatus();
1325		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
1326			activity.xmppConnectionService.sendChatState(conversation);
1327		}
1328		activity.hideConversationsOverview();
1329		updateSendButton();
1330	}
1331
1332	@Override
1333	public void onTypingStopped() {
1334		Account.State status = conversation.getAccount().getStatus();
1335		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
1336			activity.xmppConnectionService.sendChatState(conversation);
1337		}
1338	}
1339
1340	@Override
1341	public void onTextDeleted() {
1342		Account.State status = conversation.getAccount().getStatus();
1343		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1344			activity.xmppConnectionService.sendChatState(conversation);
1345		}
1346		updateSendButton();
1347	}
1348
1349	@Override
1350	public void onTextChanged() {
1351		if (conversation != null && conversation.getCorrectingMessage() != null) {
1352			updateSendButton();
1353		}
1354	}
1355
1356	private int completionIndex = 0;
1357	private int lastCompletionLength = 0;
1358	private String incomplete;
1359	private int lastCompletionCursor;
1360	private boolean firstWord = false;
1361
1362	@Override
1363	public boolean onTabPressed(boolean repeated) {
1364		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
1365			return false;
1366		}
1367		if (repeated) {
1368			completionIndex++;
1369		} else {
1370			lastCompletionLength = 0;
1371			completionIndex = 0;
1372			final String content = mEditMessage.getText().toString();
1373			lastCompletionCursor = mEditMessage.getSelectionEnd();
1374			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ",lastCompletionCursor-1) + 1 : 0;
1375			firstWord = start == 0;
1376			incomplete = content.substring(start,lastCompletionCursor);
1377		}
1378		List<String> completions = new ArrayList<>();
1379		for(MucOptions.User user : conversation.getMucOptions().getUsers()) {
1380			if (user.getName().startsWith(incomplete)) {
1381				completions.add(user.getName()+(firstWord ? ": " : " "));
1382			}
1383		}
1384		Collections.sort(completions);
1385		if (completions.size() > completionIndex) {
1386			String completion = completions.get(completionIndex).substring(incomplete.length());
1387			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1388			mEditMessage.getEditableText().insert(lastCompletionCursor, completion);
1389			lastCompletionLength = completion.length();
1390		} else {
1391			completionIndex = -1;
1392			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1393			lastCompletionLength = 0;
1394		}
1395		return true;
1396	}
1397
1398	@Override
1399	public void onActivityResult(int requestCode, int resultCode,
1400	                                final Intent data) {
1401		if (resultCode == Activity.RESULT_OK) {
1402			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1403				activity.getSelectedConversation().getAccount().getPgpDecryptionService().onKeychainUnlocked();
1404				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1405				updatePgpMessages();
1406			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_TEXT) {
1407				final String body = mEditMessage.getText().toString();
1408				Message message = new Message(conversation, body, conversation.getNextEncryption());
1409				sendAxolotlMessage(message);
1410			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_MENU) {
1411				int choice = data.getIntExtra("choice", ConversationActivity.ATTACHMENT_CHOICE_INVALID);
1412				activity.selectPresenceToAttachFile(choice, conversation.getNextEncryption());
1413			}
1414		} else {
1415			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1416				keychainUnlock = KEYCHAIN_UNLOCK_NOT_REQUIRED;
1417				updatePgpMessages();
1418			}
1419		}
1420	}
1421
1422}