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