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.support.v13.view.inputmethod.InputConnectionCompat;
  15import android.support.v13.view.inputmethod.InputContentInfoCompat;
  16import android.text.Editable;
  17import android.text.InputType;
  18import android.util.Log;
  19import android.util.Pair;
  20import android.view.ContextMenu;
  21import android.view.ContextMenu.ContextMenuInfo;
  22import android.view.Gravity;
  23import android.view.KeyEvent;
  24import android.view.LayoutInflater;
  25import android.view.MenuItem;
  26import android.view.View;
  27import android.view.View.OnClickListener;
  28import android.view.ViewGroup;
  29import android.view.inputmethod.EditorInfo;
  30import android.view.inputmethod.InputMethodManager;
  31import android.widget.AbsListView;
  32import android.widget.AbsListView.OnScrollListener;
  33import android.widget.AdapterView;
  34import android.widget.AdapterView.AdapterContextMenuInfo;
  35import android.widget.ImageButton;
  36import android.widget.ListView;
  37import android.widget.PopupMenu;
  38import android.widget.RelativeLayout;
  39import android.widget.TextView;
  40import android.widget.TextView.OnEditorActionListener;
  41import android.widget.Toast;
  42
  43import net.java.otr4j.session.SessionStatus;
  44
  45import java.util.ArrayList;
  46import java.util.Arrays;
  47import java.util.Collections;
  48import java.util.List;
  49import java.util.ListIterator;
  50import java.util.UUID;
  51import java.util.concurrent.atomic.AtomicBoolean;
  52
  53import eu.siacs.conversations.Config;
  54import eu.siacs.conversations.R;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Blockable;
  57import eu.siacs.conversations.entities.Contact;
  58import eu.siacs.conversations.entities.Conversation;
  59import eu.siacs.conversations.entities.DownloadableFile;
  60import eu.siacs.conversations.entities.Message;
  61import eu.siacs.conversations.entities.MucOptions;
  62import eu.siacs.conversations.entities.Presence;
  63import eu.siacs.conversations.entities.Transferable;
  64import eu.siacs.conversations.entities.TransferablePlaceholder;
  65import eu.siacs.conversations.http.HttpDownloadConnection;
  66import eu.siacs.conversations.persistance.FileBackend;
  67import eu.siacs.conversations.services.MessageArchiveService;
  68import eu.siacs.conversations.services.XmppConnectionService;
  69import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
  70import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
  71import eu.siacs.conversations.ui.adapter.MessageAdapter;
  72import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
  73import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
  74import eu.siacs.conversations.ui.widget.ListSelectionManager;
  75import eu.siacs.conversations.utils.GeoHelper;
  76import eu.siacs.conversations.utils.NickValidityChecker;
  77import eu.siacs.conversations.utils.UIHelper;
  78import eu.siacs.conversations.xmpp.XmppConnection;
  79import eu.siacs.conversations.xmpp.chatstate.ChatState;
  80import eu.siacs.conversations.xmpp.jid.Jid;
  81
  82public class ConversationFragment extends Fragment implements EditMessage.KeyboardListener {
  83
  84	protected Conversation conversation;
  85	private OnClickListener leaveMuc = new OnClickListener() {
  86
  87		@Override
  88		public void onClick(View v) {
  89			activity.endConversation(conversation);
  90		}
  91	};
  92	private OnClickListener joinMuc = new OnClickListener() {
  93
  94		@Override
  95		public void onClick(View v) {
  96			activity.xmppConnectionService.joinMuc(conversation);
  97		}
  98	};
  99	private OnClickListener enterPassword = new OnClickListener() {
 100
 101		@Override
 102		public void onClick(View v) {
 103			MucOptions muc = conversation.getMucOptions();
 104			String password = muc.getPassword();
 105			if (password == null) {
 106				password = "";
 107			}
 108			activity.quickPasswordEdit(password, new OnValueEdited() {
 109
 110				@Override
 111				public void onValueEdited(String value) {
 112					activity.xmppConnectionService.providePasswordForMuc(
 113							conversation, value);
 114				}
 115			});
 116		}
 117	};
 118	protected ListView messagesView;
 119	final protected List<Message> messageList = new ArrayList<>();
 120	protected MessageAdapter messageListAdapter;
 121	private EditMessage mEditMessage;
 122	private ImageButton mSendButton;
 123	private RelativeLayout snackbar;
 124	private TextView snackbarMessage;
 125	private TextView snackbarAction;
 126	private Toast messageLoaderToast;
 127
 128	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 129
 130		@Override
 131		public void onScrollStateChanged(AbsListView view, int scrollState) {
 132			// TODO Auto-generated method stub
 133
 134		}
 135
 136		@Override
 137		public void onScroll(AbsListView view, int firstVisibleItem,
 138							 int visibleItemCount, int totalItemCount) {
 139			synchronized (ConversationFragment.this.messageList) {
 140				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true,false) && messageList.size() > 0) {
 141					long timestamp;
 142					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 143						timestamp = messageList.get(1).getTimeSent();
 144					} else {
 145						timestamp = messageList.get(0).getTimeSent();
 146					}
 147					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 148						@Override
 149						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 150							if (ConversationFragment.this.conversation != conversation) {
 151								conversation.messagesLoaded.set(true);
 152								return;
 153							}
 154							activity.runOnUiThread(new Runnable() {
 155								@Override
 156								public void run() {
 157									final int oldPosition = messagesView.getFirstVisiblePosition();
 158									Message message = null;
 159									int childPos;
 160									for(childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 161										message =  messageList.get(oldPosition + childPos);
 162										if (message.getType() != Message.TYPE_STATUS) {
 163											break;
 164										}
 165									}
 166									final String uuid = message != null ? message.getUuid() : null;
 167									View v = messagesView.getChildAt(childPos);
 168									final int pxOffset = (v == null) ? 0 : v.getTop();
 169									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 170									try {
 171										updateStatusMessages();
 172									} catch (IllegalStateException e) {
 173										Log.d(Config.LOGTAG,"caught illegal state exception while updating status messages");
 174									}
 175									messageListAdapter.notifyDataSetChanged();
 176									int pos = Math.max(getIndexOf(uuid,messageList),0);
 177									messagesView.setSelectionFromTop(pos, pxOffset);
 178									if (messageLoaderToast != null) {
 179										messageLoaderToast.cancel();
 180									}
 181									conversation.messagesLoaded.set(true);
 182								}
 183							});
 184						}
 185
 186						@Override
 187						public void informUser(final int resId) {
 188
 189							activity.runOnUiThread(new Runnable() {
 190								@Override
 191								public void run() {
 192									if (messageLoaderToast != null) {
 193										messageLoaderToast.cancel();
 194									}
 195									if (ConversationFragment.this.conversation != conversation) {
 196										return;
 197									}
 198									messageLoaderToast = Toast.makeText(activity, resId, Toast.LENGTH_LONG);
 199									messageLoaderToast.show();
 200								}
 201							});
 202
 203						}
 204					});
 205
 206				}
 207			}
 208		}
 209	};
 210
 211	private int getIndexOf(String uuid, List<Message> messages) {
 212		if (uuid == null) {
 213			return messages.size() - 1;
 214		}
 215		for(int i = 0; i < messages.size(); ++i) {
 216			if (uuid.equals(messages.get(i).getUuid())) {
 217				return i;
 218			} else {
 219				Message next = messages.get(i);
 220				while(next != null && next.wasMergedIntoPrevious()) {
 221					if (uuid.equals(next.getUuid())) {
 222						return i;
 223					}
 224					next = next.next();
 225				}
 226
 227			}
 228		}
 229		return -1;
 230	}
 231
 232	public Pair<Integer,Integer> getScrollPosition() {
 233		if (this.messagesView.getCount() == 0 ||
 234				this.messagesView.getLastVisiblePosition() == this.messagesView.getCount() - 1) {
 235			return null;
 236		} else {
 237			final int pos = messagesView.getFirstVisiblePosition();
 238			final View view = messagesView.getChildAt(0);
 239			if (view == null) {
 240				return null;
 241			} else {
 242				return new Pair<>(pos, view.getTop());
 243			}
 244		}
 245	}
 246
 247	public void setScrollPosition(Pair<Integer,Integer> scrollPosition) {
 248		if (scrollPosition != null) {
 249			this.messagesView.setSelectionFromTop(scrollPosition.first, scrollPosition.second);
 250		}
 251	}
 252
 253	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 254
 255		@Override
 256		public void onClick(View v) {
 257			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 258			if (pendingIntent != null) {
 259				try {
 260					activity.startIntentSenderForResult(pendingIntent.getIntentSender(),
 261                            ConversationActivity.REQUEST_DECRYPT_PGP,
 262                            null,
 263                            0,
 264                            0,
 265                            0);
 266				} catch (SendIntentException e) {
 267					Toast.makeText(activity,R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 268					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 269				}
 270			}
 271			updateSnackBar(conversation);
 272		}
 273	};
 274	protected OnClickListener clickToVerify = new OnClickListener() {
 275
 276		@Override
 277		public void onClick(View v) {
 278			activity.verifyOtrSessionDialog(conversation, v);
 279		}
 280	};
 281	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
 282
 283		@Override
 284		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 285			if (actionId == EditorInfo.IME_ACTION_SEND) {
 286				InputMethodManager imm = (InputMethodManager) v.getContext()
 287						.getSystemService(Context.INPUT_METHOD_SERVICE);
 288				if (imm.isFullscreenMode()) {
 289					imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 290				}
 291				sendMessage();
 292				return true;
 293			} else {
 294				return false;
 295			}
 296		}
 297	};
 298	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 299		@Override
 300		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 301			// try to get permission to read the image, if applicable
 302			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 303				try {
 304					inputContentInfo.requestPermission();
 305				} catch (Exception e) {
 306					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 307					Toast.makeText(
 308							activity,
 309							activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()),
 310							Toast.LENGTH_LONG
 311					).show();
 312					return false;
 313				}
 314			}
 315
 316			// send the image
 317			activity.attachImageToConversation(inputContentInfo.getContentUri());
 318
 319			// TODO: revoke permissions?
 320			// since uploading an image is async its tough to wire a callback to when
 321			// the image has finished uploading.
 322			// According to the docs: "calling IC#releasePermission() is just to be a
 323			// good citizen. Even if we failed to call that method, the system would eventually revoke
 324			// the permission sometime after inputContentInfo object gets garbage-collected."
 325			// See: https://developer.android.com/samples/CommitContentSampleApp/src/com.example.android.commitcontent.app/MainActivity.html#l164
 326			return true;
 327		}
 328	};
 329	private OnClickListener mSendButtonListener = new OnClickListener() {
 330
 331		@Override
 332		public void onClick(View v) {
 333			Object tag = v.getTag();
 334			if (tag instanceof SendButtonAction) {
 335				SendButtonAction action = (SendButtonAction) tag;
 336				switch (action) {
 337					case TAKE_PHOTO:
 338						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_TAKE_PHOTO);
 339						break;
 340					case SEND_LOCATION:
 341						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_LOCATION);
 342						break;
 343					case RECORD_VOICE:
 344						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_RECORD_VOICE);
 345						break;
 346					case CHOOSE_PICTURE:
 347						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_CHOOSE_IMAGE);
 348						break;
 349					case CANCEL:
 350						if (conversation != null) {
 351							if(conversation.setCorrectingMessage(null)) {
 352								mEditMessage.setText("");
 353								mEditMessage.append(conversation.getDraftMessage());
 354								conversation.setDraftMessage(null);
 355							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 356								conversation.setNextCounterpart(null);
 357							}
 358							updateChatMsgHint();
 359							updateSendButton();
 360							updateEditablity();
 361						}
 362						break;
 363					default:
 364						sendMessage();
 365				}
 366			} else {
 367				sendMessage();
 368			}
 369		}
 370	};
 371	private OnClickListener clickToMuc = new OnClickListener() {
 372
 373		@Override
 374		public void onClick(View v) {
 375			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 376			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 377			intent.putExtra("uuid", conversation.getUuid());
 378			startActivity(intent);
 379		}
 380	};
 381	private ConversationActivity activity;
 382	private Message selectedMessage;
 383
 384	private void sendMessage() {
 385		final String body = mEditMessage.getText().toString();
 386		final Conversation conversation = this.conversation;
 387		if (body.length() == 0 || conversation == null) {
 388			return;
 389		}
 390		final Message message;
 391		if (conversation.getCorrectingMessage() == null) {
 392			message = new Message(conversation, body, conversation.getNextEncryption());
 393			if (conversation.getMode() == Conversation.MODE_MULTI) {
 394				if (conversation.getNextCounterpart() != null) {
 395					message.setCounterpart(conversation.getNextCounterpart());
 396					message.setType(Message.TYPE_PRIVATE);
 397				}
 398			}
 399		} else {
 400			message = conversation.getCorrectingMessage();
 401			message.setBody(body);
 402			message.setEdited(message.getUuid());
 403			message.setUuid(UUID.randomUUID().toString());
 404		}
 405		switch (message.getConversation().getNextEncryption()) {
 406			case Message.ENCRYPTION_OTR:
 407				sendOtrMessage(message);
 408				break;
 409			case Message.ENCRYPTION_PGP:
 410				sendPgpMessage(message);
 411				break;
 412			case Message.ENCRYPTION_AXOLOTL:
 413				if(!activity.trustKeysIfNeeded(ConversationActivity.REQUEST_TRUST_KEYS_TEXT)) {
 414					sendAxolotlMessage(message);
 415				}
 416				break;
 417			default:
 418				sendPlainTextMessage(message);
 419		}
 420	}
 421
 422	public void updateChatMsgHint() {
 423		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 424		if (conversation.getCorrectingMessage() != null) {
 425			this.mEditMessage.setHint(R.string.send_corrected_message);
 426		} else if (multi && conversation.getNextCounterpart() != null) {
 427			this.mEditMessage.setHint(getString(
 428					R.string.send_private_message_to,
 429					conversation.getNextCounterpart().getResourcepart()));
 430		} else if (multi && !conversation.getMucOptions().participating()) {
 431			this.mEditMessage.setHint(R.string.you_are_not_participating);
 432		} else {
 433			this.mEditMessage.setHint(UIHelper.getMessageHint(activity,conversation));
 434			getActivity().invalidateOptionsMenu();
 435		}
 436	}
 437
 438	public void setupIme() {
 439		if (activity != null) {
 440			if (activity.usingEnterKey() && activity.enterIsSend()) {
 441				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_FLAG_MULTI_LINE));
 442				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 443			} else if (activity.usingEnterKey()) {
 444				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 445				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 446			} else {
 447				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 448				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
 449			}
 450		}
 451	}
 452
 453	@Override
 454	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 455		final View view = inflater.inflate(R.layout.fragment_conversation, container, false);
 456		view.setOnClickListener(null);
 457
 458		String[] allImagesMimeType = {"image/*"};
 459		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
 460		mEditMessage.setOnClickListener(new OnClickListener() {
 461
 462			@Override
 463			public void onClick(View v) {
 464				if (activity != null) {
 465					activity.hideConversationsOverview();
 466				}
 467			}
 468		});
 469		mEditMessage.setOnEditorActionListener(mEditorActionListener);
 470		mEditMessage.setRichContentListener(allImagesMimeType, mEditorContentListener);
 471
 472		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
 473		mSendButton.setOnClickListener(this.mSendButtonListener);
 474
 475		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
 476		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
 477		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
 478
 479		messagesView = (ListView) view.findViewById(R.id.messages_view);
 480		messagesView.setOnScrollListener(mOnScrollListener);
 481		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 482		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
 483		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
 484
 485			@Override
 486			public void onContactPictureClicked(Message message) {
 487				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 488					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 489						Jid user = message.getCounterpart();
 490						if (user != null && !user.isBareJid()) {
 491							if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 492								Toast.makeText(activity,activity.getString(R.string.user_has_left_conference,user.getResourcepart()),Toast.LENGTH_SHORT).show();
 493							}
 494							highlightInConference(user.getResourcepart());
 495						}
 496					} else {
 497						if (!message.getContact().isSelf()) {
 498							String fingerprint;
 499							if (message.getEncryption() == Message.ENCRYPTION_PGP
 500									|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 501								fingerprint = "pgp";
 502							} else {
 503								fingerprint = message.getFingerprint();
 504							}
 505							activity.switchToContactDetails(message.getContact(), fingerprint);
 506						}
 507					}
 508				} else {
 509					Account account = message.getConversation().getAccount();
 510					Intent intent;
 511					if (activity.manuallyChangePresence()) {
 512						intent = new Intent(activity, SetPresenceActivity.class);
 513						intent.putExtra(SetPresenceActivity.EXTRA_ACCOUNT, account.getJid().toBareJid().toString());
 514					} else {
 515						intent = new Intent(activity, EditAccountActivity.class);
 516						intent.putExtra("jid", account.getJid().toBareJid().toString());
 517						String fingerprint;
 518						if (message.getEncryption() == Message.ENCRYPTION_PGP
 519								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 520							fingerprint = "pgp";
 521						} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 522							fingerprint = "otr";
 523						} else {
 524							fingerprint = message.getFingerprint();
 525						}
 526						intent.putExtra("fingerprint", fingerprint);
 527					}
 528					startActivity(intent);
 529				}
 530			}
 531		});
 532		messageListAdapter
 533				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
 534
 535					@Override
 536					public void onContactPictureLongClicked(Message message) {
 537						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 538							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 539								Jid user = message.getCounterpart();
 540								if (user != null && !user.isBareJid()) {
 541									if (message.getConversation().getMucOptions().isUserInRoom(user)) {
 542										privateMessageWith(user);
 543									} else {
 544										Toast.makeText(activity, activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 545									}
 546								}
 547							}
 548						} else {
 549							activity.showQrCode();
 550						}
 551					}
 552				});
 553		messageListAdapter.setOnQuoteListener(new MessageAdapter.OnQuoteListener() {
 554
 555			@Override
 556			public void onQuote(String text) {
 557				if (mEditMessage.isEnabled()) {
 558					text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 559					Editable editable = mEditMessage.getEditableText();
 560					int position = mEditMessage.getSelectionEnd();
 561					if (position == -1) position = editable.length();
 562					if (position > 0 && editable.charAt(position - 1) != '\n') {
 563						editable.insert(position++, "\n");
 564					}
 565					editable.insert(position, text);
 566					position += text.length();
 567					editable.insert(position++, "\n");
 568					if (position < editable.length() && editable.charAt(position) != '\n') {
 569						editable.insert(position, "\n");
 570					}
 571					mEditMessage.setSelection(position);
 572					mEditMessage.requestFocus();
 573					InputMethodManager inputMethodManager = (InputMethodManager) getActivity()
 574							.getSystemService(Context.INPUT_METHOD_SERVICE);
 575					if (inputMethodManager != null) {
 576						inputMethodManager.showSoftInput(mEditMessage, InputMethodManager.SHOW_IMPLICIT);
 577					}
 578				}
 579			}
 580		});
 581		messagesView.setAdapter(messageListAdapter);
 582
 583		registerForContextMenu(messagesView);
 584
 585		return view;
 586	}
 587
 588	@Override
 589	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 590		synchronized (this.messageList) {
 591			super.onCreateContextMenu(menu, v, menuInfo);
 592			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 593			this.selectedMessage = this.messageList.get(acmi.position);
 594			populateContextMenu(menu);
 595		}
 596	}
 597
 598	private void populateContextMenu(ContextMenu menu) {
 599		final Message m = this.selectedMessage;
 600		final Transferable t = m.getTransferable();
 601		Message relevantForCorrection = m;
 602		while(relevantForCorrection.mergeable(relevantForCorrection.next())) {
 603			relevantForCorrection = relevantForCorrection.next();
 604		}
 605		if (m.getType() != Message.TYPE_STATUS) {
 606			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 607					&& m.getType() != Message.TYPE_PRIVATE
 608					&& t == null;
 609			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 610			menu.setHeaderTitle(R.string.message_options);
 611			MenuItem selectText = menu.findItem(R.id.select_text);
 612			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 613			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 614			MenuItem shareWith = menu.findItem(R.id.share_with);
 615			MenuItem sendAgain = menu.findItem(R.id.send_again);
 616			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 617			MenuItem downloadFile = menu.findItem(R.id.download_file);
 618			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 619			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 620			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
 621			if (!treatAsFile && !GeoHelper.isGeoUri(m.getBody()) && !m.treatAsDownloadable()) {
 622				selectText.setVisible(ListSelectionManager.isSupported());
 623			}
 624			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 625				retryDecryption.setVisible(true);
 626			}
 627			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 628					&& relevantForCorrection.isLastCorrectableMessage()
 629					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
 630				correctMessage.setVisible(true);
 631			}
 632			if (treatAsFile || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
 633				shareWith.setVisible(true);
 634			}
 635			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 636				sendAgain.setVisible(true);
 637			}
 638			if (m.hasFileOnRemoteHost()
 639					|| GeoHelper.isGeoUri(m.getBody())
 640					|| m.treatAsDownloadable()
 641					|| (t != null && t instanceof HttpDownloadConnection)) {
 642				copyUrl.setVisible(true);
 643			}
 644			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
 645				downloadFile.setVisible(true);
 646				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 647			}
 648			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
 649					|| m.getStatus() == Message.STATUS_UNSEND
 650					|| m.getStatus() == Message.STATUS_OFFERED;
 651			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
 652				cancelTransmission.setVisible(true);
 653			}
 654			if (treatAsFile) {
 655				String path = m.getRelativeFilePath();
 656				if (path == null || !path.startsWith("/")) {
 657					deleteFile.setVisible(true);
 658					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
 659				}
 660			}
 661			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
 662				showErrorMessage.setVisible(true);
 663			}
 664		}
 665	}
 666
 667	@Override
 668	public boolean onContextItemSelected(MenuItem item) {
 669		switch (item.getItemId()) {
 670			case R.id.share_with:
 671				shareWith(selectedMessage);
 672				return true;
 673			case R.id.select_text:
 674				selectText(selectedMessage);
 675				return true;
 676			case R.id.correct_message:
 677				correctMessage(selectedMessage);
 678				return true;
 679			case R.id.send_again:
 680				resendMessage(selectedMessage);
 681				return true;
 682			case R.id.copy_url:
 683				copyUrl(selectedMessage);
 684				return true;
 685			case R.id.download_file:
 686				downloadFile(selectedMessage);
 687				return true;
 688			case R.id.cancel_transmission:
 689				cancelTransmission(selectedMessage);
 690				return true;
 691			case R.id.retry_decryption:
 692				retryDecryption(selectedMessage);
 693				return true;
 694			case R.id.delete_file:
 695				deleteFile(selectedMessage);
 696				return true;
 697			case R.id.show_error_message:
 698				showErrorMessage(selectedMessage);
 699				return true;
 700			default:
 701				return super.onContextItemSelected(item);
 702		}
 703	}
 704
 705	private void showErrorMessage(final Message message) {
 706		AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 707		builder.setTitle(R.string.error_message);
 708		builder.setMessage(message.getErrorMessage());
 709		builder.setPositiveButton(R.string.confirm,null);
 710		builder.create().show();
 711	}
 712
 713	private void shareWith(Message message) {
 714		Intent shareIntent = new Intent();
 715		shareIntent.setAction(Intent.ACTION_SEND);
 716		if (GeoHelper.isGeoUri(message.getBody())) {
 717			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
 718			shareIntent.setType("text/plain");
 719		} else if (!message.isFileOrImage()) {
 720			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
 721			shareIntent.setType("text/plain");
 722		} else {
 723			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 724			try {
 725				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(activity, file));
 726			} catch (SecurityException e) {
 727				Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 728				return;
 729			}
 730			shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 731			String mime = message.getMimeType();
 732			if (mime == null) {
 733				mime = "*/*";
 734			}
 735			shareIntent.setType(mime);
 736		}
 737		try {
 738			activity.startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
 739		} catch (ActivityNotFoundException e) {
 740			//This should happen only on faulty androids because normally chooser is always available
 741			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 742		}
 743	}
 744
 745	private void selectText(Message message) {
 746		final int index;
 747		synchronized (this.messageList) {
 748			index = this.messageList.indexOf(message);
 749		}
 750		if (index >= 0) {
 751			final int first = this.messagesView.getFirstVisiblePosition();
 752			final int last = first + this.messagesView.getChildCount();
 753			if (index >= first && index < last)	{
 754				final View view = this.messagesView.getChildAt(index - first);
 755				final TextView messageBody = this.messageListAdapter.getMessageBody(view);
 756				if (messageBody != null) {
 757					ListSelectionManager.startSelection(messageBody);
 758				}
 759			}
 760		}
 761	}
 762
 763	private void deleteFile(Message message) {
 764		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
 765			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 766			activity.updateConversationList();
 767			updateMessages();
 768		}
 769	}
 770
 771	private void resendMessage(Message message) {
 772		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
 773			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 774			if (!file.exists()) {
 775				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 776				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 777				activity.updateConversationList();
 778				updateMessages();
 779				return;
 780			}
 781		}
 782		activity.xmppConnectionService.resendFailedMessages(message);
 783	}
 784
 785	private void copyUrl(Message message) {
 786		final String url;
 787		final int resId;
 788		if (GeoHelper.isGeoUri(message.getBody())) {
 789			resId = R.string.location;
 790			url = message.getBody();
 791		} else if (message.hasFileOnRemoteHost()) {
 792			resId = R.string.file_url;
 793			url = message.getFileParams().url.toString();
 794		} else {
 795			url = message.getBody().trim();
 796			resId = R.string.file_url;
 797		}
 798		if (activity.copyTextToClipboard(url, resId)) {
 799			Toast.makeText(activity, R.string.url_copied_to_clipboard,
 800					Toast.LENGTH_SHORT).show();
 801		}
 802	}
 803
 804	private void downloadFile(Message message) {
 805		activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message,true);
 806	}
 807
 808	private void cancelTransmission(Message message) {
 809		Transferable transferable = message.getTransferable();
 810		if (transferable != null) {
 811			transferable.cancel();
 812		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
 813			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
 814		}
 815	}
 816
 817	private void retryDecryption(Message message) {
 818		message.setEncryption(Message.ENCRYPTION_PGP);
 819		activity.updateConversationList();
 820		updateMessages();
 821		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
 822	}
 823
 824	protected void privateMessageWith(final Jid counterpart) {
 825		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 826			activity.xmppConnectionService.sendChatState(conversation);
 827		}
 828		this.mEditMessage.setText("");
 829		this.conversation.setNextCounterpart(counterpart);
 830		updateChatMsgHint();
 831		updateSendButton();
 832		updateEditablity();
 833	}
 834
 835	private void correctMessage(Message message) {
 836		while(message.mergeable(message.next())) {
 837			message = message.next();
 838		}
 839		this.conversation.setCorrectingMessage(message);
 840		final Editable editable = mEditMessage.getText();
 841		this.conversation.setDraftMessage(editable.toString());
 842		this.mEditMessage.setText("");
 843		this.mEditMessage.append(message.getBody());
 844
 845	}
 846
 847	protected void highlightInConference(String nick) {
 848		final Editable editable = mEditMessage.getText();
 849		String oldString = editable.toString().trim();
 850		final int pos = mEditMessage.getSelectionStart();
 851		if (oldString.isEmpty() || pos == 0) {
 852			editable.insert(0, nick + ": ");
 853		} else {
 854			final char before = editable.charAt(pos - 1);
 855			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
 856			if (before == '\n') {
 857				editable.insert(pos, nick + ": ");
 858			} else {
 859				if (pos > 2 && editable.subSequence(pos-2,pos).toString().equals(": ")) {
 860					if (NickValidityChecker.check(conversation,Arrays.asList(editable.subSequence(0,pos-2).toString().split(", ")))) {
 861						editable.insert(pos - 2, ", " + nick);
 862						return;
 863					}
 864				}
 865				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
 866				if (Character.isWhitespace(after)) {
 867					mEditMessage.setSelection(mEditMessage.getSelectionStart() + 1);
 868				}
 869			}
 870		}
 871	}
 872
 873	@Override
 874	public void onStop() {
 875		super.onStop();
 876		if (this.conversation != null) {
 877			final String msg = mEditMessage.getText().toString();
 878			this.conversation.setNextMessage(msg);
 879			updateChatState(this.conversation, msg);
 880		}
 881	}
 882
 883	private void updateChatState(final Conversation conversation, final String msg) {
 884		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
 885		Account.State status = conversation.getAccount().getStatus();
 886		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
 887			activity.xmppConnectionService.sendChatState(conversation);
 888		}
 889	}
 890
 891	public boolean reInit(Conversation conversation) {
 892		if (conversation == null) {
 893			return false;
 894		}
 895		this.activity = (ConversationActivity) getActivity();
 896		setupIme();
 897		if (this.conversation != null) {
 898			final String msg = mEditMessage.getText().toString();
 899			this.conversation.setNextMessage(msg);
 900			if (this.conversation != conversation) {
 901				updateChatState(this.conversation, msg);
 902			}
 903			this.conversation.trim();
 904
 905		}
 906
 907		if (activity != null) {
 908			this.mSendButton.setContentDescription(activity.getString(R.string.send_message_to_x,conversation.getName()));
 909		}
 910
 911		this.conversation = conversation;
 912		this.mEditMessage.setKeyboardListener(null);
 913		this.mEditMessage.setText("");
 914		this.mEditMessage.append(this.conversation.getNextMessage());
 915		this.mEditMessage.setKeyboardListener(this);
 916		messageListAdapter.updatePreferences();
 917		this.messagesView.setAdapter(messageListAdapter);
 918		updateMessages();
 919		this.conversation.messagesLoaded.set(true);
 920		synchronized (this.messageList) {
 921			final Message first = conversation.getFirstUnreadMessage();
 922			final int bottom = Math.max(0, this.messageList.size() - 1);
 923			final int pos;
 924			if (first == null) {
 925				pos = bottom;
 926			} else {
 927				int i = getIndexOf(first.getUuid(), this.messageList);
 928				pos = i < 0 ? bottom : i;
 929			}
 930			messagesView.setSelection(pos);
 931			return pos == bottom;
 932		}
 933	}
 934
 935	private OnClickListener mEnableAccountListener = new OnClickListener() {
 936		@Override
 937		public void onClick(View v) {
 938			final Account account = conversation == null ? null : conversation.getAccount();
 939			if (account != null) {
 940				account.setOption(Account.OPTION_DISABLED, false);
 941				activity.xmppConnectionService.updateAccount(account);
 942			}
 943		}
 944	};
 945
 946	private OnClickListener mUnblockClickListener = new OnClickListener() {
 947		@Override
 948		public void onClick(final View v) {
 949			v.post(new Runnable() {
 950				@Override
 951				public void run() {
 952					v.setVisibility(View.INVISIBLE);
 953				}
 954			});
 955			if (conversation.isDomainBlocked()) {
 956				BlockContactDialog.show(activity, conversation);
 957			} else {
 958				activity.unblockConversation(conversation);
 959			}
 960		}
 961	};
 962
 963	private OnClickListener mBlockClickListener = new OnClickListener() {
 964		@Override
 965		public void onClick(final View view) {
 966			final Jid jid = conversation.getJid();
 967			if (jid.isDomainJid()) {
 968				BlockContactDialog.show(activity, conversation);
 969			} else {
 970				PopupMenu popupMenu = new PopupMenu(activity, view);
 971				popupMenu.inflate(R.menu.block);
 972				popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
 973					@Override
 974					public boolean onMenuItemClick(MenuItem menuItem) {
 975						Blockable blockable;
 976						switch (menuItem.getItemId()) {
 977							case R.id.block_domain:
 978								blockable = conversation.getAccount().getRoster().getContact(jid.toDomainJid());
 979								break;
 980							default:
 981								blockable = conversation;
 982						}
 983						BlockContactDialog.show(activity, blockable);
 984						return true;
 985					}
 986				});
 987				popupMenu.show();
 988			}
 989		}
 990	};
 991
 992	private OnClickListener mAddBackClickListener = new OnClickListener() {
 993
 994		@Override
 995		public void onClick(View v) {
 996			final Contact contact = conversation == null ? null : conversation.getContact();
 997			if (contact != null) {
 998				activity.xmppConnectionService.createContact(contact);
 999				activity.switchToContactDetails(contact);
1000			}
1001		}
1002	};
1003
1004	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
1005		@Override
1006		public void onClick(View v) {
1007			final Contact contact = conversation == null ? null : conversation.getContact();
1008			if (contact != null) {
1009				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
1010						activity.xmppConnectionService.getPresenceGenerator()
1011								.sendPresenceUpdatesTo(contact));
1012				hideSnackbar();
1013			}
1014		}
1015	};
1016
1017	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
1018		@Override
1019		public void onClick(View view) {
1020			Intent intent = new Intent(activity, VerifyOTRActivity.class);
1021			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
1022			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
1023			intent.putExtra(VerifyOTRActivity.EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
1024			intent.putExtra("mode", VerifyOTRActivity.MODE_ANSWER_QUESTION);
1025			startActivity(intent);
1026		}
1027	};
1028
1029	private void updateSnackBar(final Conversation conversation) {
1030		final Account account = conversation.getAccount();
1031		final XmppConnection connection = account.getXmppConnection();
1032		final int mode = conversation.getMode();
1033		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1034		if (account.getStatus() == Account.State.DISABLED) {
1035			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1036		} else if (conversation.isBlocked()) {
1037			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1038		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1039			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener);
1040		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1041			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription);
1042		} else if (mode == Conversation.MODE_MULTI
1043				&& !conversation.getMucOptions().online()
1044				&& account.getStatus() == Account.State.ONLINE) {
1045			switch (conversation.getMucOptions().getError()) {
1046				case NICK_IN_USE:
1047					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1048					break;
1049				case NO_RESPONSE:
1050					showSnackbar(R.string.joining_conference, 0, null);
1051					break;
1052				case SERVER_NOT_FOUND:
1053					if (conversation.receivedMessagesCount() > 0) {
1054						showSnackbar(R.string.remote_server_not_found,R.string.try_again, joinMuc);
1055					} else {
1056						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1057					}
1058					break;
1059				case PASSWORD_REQUIRED:
1060					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1061					break;
1062				case BANNED:
1063					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1064					break;
1065				case MEMBERS_ONLY:
1066					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1067					break;
1068				case KICKED:
1069					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1070					break;
1071				case UNKNOWN:
1072					showSnackbar(R.string.conference_unknown_error, R.string.join, joinMuc);
1073					break;
1074				case SHUTDOWN:
1075					showSnackbar(R.string.conference_shutdown, R.string.join, joinMuc);
1076					break;
1077				default:
1078					hideSnackbar();
1079					break;
1080			}
1081		} else if (account.hasPendingPgpIntent(conversation)) {
1082			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1083		} else if (mode == Conversation.MODE_SINGLE
1084				&& conversation.smpRequested()) {
1085			showSnackbar(R.string.smp_requested, R.string.verify, this.mAnswerSmpClickListener);
1086		} else if (mode == Conversation.MODE_SINGLE
1087				&& conversation.hasValidOtrSession()
1088				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
1089				&& (!conversation.isOtrFingerprintVerified())) {
1090			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
1091		} else if (connection != null
1092				&& connection.getFeatures().blocking()
1093				&& conversation.countMessages() != 0
1094				&& !conversation.isBlocked()
1095				&& conversation.isWithStranger()) {
1096			showSnackbar(R.string.received_message_from_stranger,R.string.block, mBlockClickListener);
1097		} else {
1098			hideSnackbar();
1099		}
1100	}
1101
1102	public void updateMessages() {
1103		synchronized (this.messageList) {
1104			if (getView() == null) {
1105				return;
1106			}
1107			final ConversationActivity activity = (ConversationActivity) getActivity();
1108			if (this.conversation != null) {
1109				conversation.populateWithMessages(ConversationFragment.this.messageList);
1110				updateSnackBar(conversation);
1111				updateStatusMessages();
1112				this.messageListAdapter.notifyDataSetChanged();
1113				updateChatMsgHint();
1114				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
1115					activity.sendReadMarkerIfNecessary(conversation);
1116				}
1117				updateSendButton();
1118				updateEditablity();
1119			}
1120		}
1121	}
1122
1123	protected void messageSent() {
1124		mSendingPgpMessage.set(false);
1125		mEditMessage.setText("");
1126		if (conversation.setCorrectingMessage(null)) {
1127			mEditMessage.append(conversation.getDraftMessage());
1128			conversation.setDraftMessage(null);
1129		}
1130		conversation.setNextMessage(mEditMessage.getText().toString());
1131		updateChatMsgHint();
1132		new Handler().post(new Runnable() {
1133			@Override
1134			public void run() {
1135				int size = messageList.size();
1136				messagesView.setSelection(size - 1);
1137			}
1138		});
1139	}
1140
1141	public void setFocusOnInputField() {
1142		mEditMessage.requestFocus();
1143	}
1144
1145	public void doneSendingPgpMessage() {
1146		mSendingPgpMessage.set(false);
1147	}
1148
1149	enum SendButtonAction {TEXT, TAKE_PHOTO, SEND_LOCATION, RECORD_VOICE, CANCEL, CHOOSE_PICTURE}
1150
1151	private int getSendButtonImageResource(SendButtonAction action, Presence.Status status) {
1152		switch (action) {
1153			case TEXT:
1154				switch (status) {
1155					case CHAT:
1156					case ONLINE:
1157						return R.drawable.ic_send_text_online;
1158					case AWAY:
1159						return R.drawable.ic_send_text_away;
1160					case XA:
1161					case DND:
1162						return R.drawable.ic_send_text_dnd;
1163					default:
1164						return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1165				}
1166			case TAKE_PHOTO:
1167				switch (status) {
1168					case CHAT:
1169					case ONLINE:
1170						return R.drawable.ic_send_photo_online;
1171					case AWAY:
1172						return R.drawable.ic_send_photo_away;
1173					case XA:
1174					case DND:
1175						return R.drawable.ic_send_photo_dnd;
1176					default:
1177						return activity.getThemeResource(R.attr.ic_send_photo_offline, R.drawable.ic_send_photo_offline);
1178				}
1179			case RECORD_VOICE:
1180				switch (status) {
1181					case CHAT:
1182					case ONLINE:
1183						return R.drawable.ic_send_voice_online;
1184					case AWAY:
1185						return R.drawable.ic_send_voice_away;
1186					case XA:
1187					case DND:
1188						return R.drawable.ic_send_voice_dnd;
1189					default:
1190						return activity.getThemeResource(R.attr.ic_send_voice_offline, R.drawable.ic_send_voice_offline);
1191				}
1192			case SEND_LOCATION:
1193				switch (status) {
1194					case CHAT:
1195					case ONLINE:
1196						return R.drawable.ic_send_location_online;
1197					case AWAY:
1198						return R.drawable.ic_send_location_away;
1199					case XA:
1200					case DND:
1201						return R.drawable.ic_send_location_dnd;
1202					default:
1203						return activity.getThemeResource(R.attr.ic_send_location_offline, R.drawable.ic_send_location_offline);
1204				}
1205			case CANCEL:
1206				switch (status) {
1207					case CHAT:
1208					case ONLINE:
1209						return R.drawable.ic_send_cancel_online;
1210					case AWAY:
1211						return R.drawable.ic_send_cancel_away;
1212					case XA:
1213					case DND:
1214						return R.drawable.ic_send_cancel_dnd;
1215					default:
1216						return activity.getThemeResource(R.attr.ic_send_cancel_offline, R.drawable.ic_send_cancel_offline);
1217				}
1218			case CHOOSE_PICTURE:
1219				switch (status) {
1220					case CHAT:
1221					case ONLINE:
1222						return R.drawable.ic_send_picture_online;
1223					case AWAY:
1224						return R.drawable.ic_send_picture_away;
1225					case XA:
1226					case DND:
1227						return R.drawable.ic_send_picture_dnd;
1228					default:
1229						return activity.getThemeResource(R.attr.ic_send_picture_offline, R.drawable.ic_send_picture_offline);
1230				}
1231		}
1232		return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1233	}
1234
1235	private void updateEditablity() {
1236		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
1237		this.mEditMessage.setFocusable(canWrite);
1238		this.mEditMessage.setFocusableInTouchMode(canWrite);
1239		this.mSendButton.setEnabled(canWrite);
1240		this.mEditMessage.setCursorVisible(canWrite);
1241	}
1242
1243	public void updateSendButton() {
1244		final Conversation c = this.conversation;
1245		final SendButtonAction action;
1246		final Presence.Status status;
1247		final String text = this.mEditMessage == null ? "" : this.mEditMessage.getText().toString();
1248		final boolean empty = text.length() == 0;
1249		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
1250		if (c.getCorrectingMessage() != null && (empty || text.equals(c.getCorrectingMessage().getBody()))) {
1251			action = SendButtonAction.CANCEL;
1252		} else if (conference && !c.getAccount().httpUploadAvailable()) {
1253			if (empty && c.getNextCounterpart() != null) {
1254				action = SendButtonAction.CANCEL;
1255			} else {
1256				action = SendButtonAction.TEXT;
1257			}
1258		} else {
1259			if (empty) {
1260				if (conference && c.getNextCounterpart() != null) {
1261					action = SendButtonAction.CANCEL;
1262				} else {
1263					String setting = activity.getPreferences().getString("quick_action", activity.getResources().getString(R.string.quick_action));
1264					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
1265						setting = "location";
1266					} else if (setting.equals("recent")) {
1267						setting = activity.getPreferences().getString("recently_used_quick_action", "text");
1268					}
1269					switch (setting) {
1270						case "photo":
1271							action = SendButtonAction.TAKE_PHOTO;
1272							break;
1273						case "location":
1274							action = SendButtonAction.SEND_LOCATION;
1275							break;
1276						case "voice":
1277							action = SendButtonAction.RECORD_VOICE;
1278							break;
1279						case "picture":
1280							action = SendButtonAction.CHOOSE_PICTURE;
1281							break;
1282						default:
1283							action = SendButtonAction.TEXT;
1284							break;
1285					}
1286				}
1287			} else {
1288				action = SendButtonAction.TEXT;
1289			}
1290		}
1291		if (activity.useSendButtonToIndicateStatus() && c.getAccount().getStatus() == Account.State.ONLINE) {
1292			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
1293				status = Presence.Status.OFFLINE;
1294			} else if (c.getMode() == Conversation.MODE_SINGLE) {
1295				status = c.getContact().getShownStatus();
1296			} else {
1297				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1298			}
1299		} else {
1300			status = Presence.Status.OFFLINE;
1301		}
1302		this.mSendButton.setTag(action);
1303		this.mSendButton.setImageResource(getSendButtonImageResource(action, status));
1304	}
1305
1306	protected void updateDateSeparators() {
1307		synchronized (this.messageList) {
1308			for(int i = 0; i < this.messageList.size(); ++i) {
1309				final Message current = this.messageList.get(i);
1310				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i-1).getTimeSent(),current.getTimeSent())) {
1311					this.messageList.add(i,Message.createDateSeparator(current));
1312					i++;
1313				}
1314			}
1315		}
1316	}
1317
1318	protected void updateStatusMessages() {
1319		updateDateSeparators();
1320		synchronized (this.messageList) {
1321			if (showLoadMoreMessages(conversation)) {
1322				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1323			}
1324			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1325				ChatState state = conversation.getIncomingChatState();
1326				if (state == ChatState.COMPOSING) {
1327					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1328				} else if (state == ChatState.PAUSED) {
1329					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1330				} else {
1331					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1332						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1333							return;
1334						} else {
1335							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1336								this.messageList.add(i + 1,
1337										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1338								return;
1339							}
1340						}
1341					}
1342				}
1343			} else {
1344				ChatState state = ChatState.COMPOSING;
1345				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state,5);
1346				if (users.size() == 0) {
1347					state = ChatState.PAUSED;
1348					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1349
1350				}
1351				if (users.size() > 0) {
1352					Message statusMessage;
1353					if (users.size() == 1) {
1354						MucOptions.User user = users.get(0);
1355						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
1356						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
1357						statusMessage.setTrueCounterpart(user.getRealJid());
1358						statusMessage.setCounterpart(user.getFullJid());
1359					} else {
1360						StringBuilder builder = new StringBuilder();
1361						for(MucOptions.User user : users) {
1362							if (builder.length() != 0) {
1363								builder.append(", ");
1364							}
1365							builder.append(UIHelper.getDisplayName(user));
1366						}
1367						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
1368						statusMessage = Message.createStatusMessage(conversation, getString(id, builder.toString()));
1369					}
1370					this.messageList.add(statusMessage);
1371				}
1372
1373			}
1374		}
1375	}
1376
1377	private boolean showLoadMoreMessages(final Conversation c) {
1378		final boolean mam = hasMamSupport(c);
1379		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
1380		return mam && (c.getLastClearHistory().getTimestamp() != 0  || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer()  && !service.queryInProgress(c)));
1381	}
1382
1383	private boolean hasMamSupport(final Conversation c) {
1384		if (c.getMode() == Conversation.MODE_SINGLE) {
1385			final XmppConnection connection = c.getAccount().getXmppConnection();
1386			return connection != null && connection.getFeatures().mam();
1387		} else {
1388			return c.getMucOptions().mamSupport();
1389		}
1390	}
1391
1392	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
1393		snackbar.setVisibility(View.VISIBLE);
1394		snackbar.setOnClickListener(null);
1395		snackbarMessage.setText(message);
1396		snackbarMessage.setOnClickListener(null);
1397		snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
1398		if (action != 0) {
1399			snackbarAction.setText(action);
1400		}
1401		snackbarAction.setOnClickListener(clickListener);
1402	}
1403
1404	protected void hideSnackbar() {
1405		snackbar.setVisibility(View.GONE);
1406	}
1407
1408	protected void sendPlainTextMessage(Message message) {
1409		ConversationActivity activity = (ConversationActivity) getActivity();
1410		activity.xmppConnectionService.sendMessage(message);
1411		messageSent();
1412	}
1413
1414	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
1415
1416	protected void sendPgpMessage(final Message message) {
1417		final ConversationActivity activity = (ConversationActivity) getActivity();
1418		final XmppConnectionService xmppService = activity.xmppConnectionService;
1419		final Contact contact = message.getConversation().getContact();
1420		if (!activity.hasPgp()) {
1421			activity.showInstallPgpDialog();
1422			return;
1423		}
1424		if (conversation.getAccount().getPgpSignature() == null) {
1425			activity.announcePgp(conversation.getAccount(), conversation, activity.onOpenPGPKeyPublished);
1426			return;
1427		}
1428		if (!mSendingPgpMessage.compareAndSet(false,true)) {
1429			Log.d(Config.LOGTAG,"sending pgp message already in progress");
1430		}
1431		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1432			if (contact.getPgpKeyId() != 0) {
1433				xmppService.getPgpEngine().hasKey(contact,
1434						new UiCallback<Contact>() {
1435
1436							@Override
1437							public void userInputRequried(PendingIntent pi,
1438														  Contact contact) {
1439								activity.runIntent(
1440										pi,
1441										ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
1442							}
1443
1444							@Override
1445							public void success(Contact contact) {
1446								activity.encryptTextMessage(message);
1447							}
1448
1449							@Override
1450							public void error(int error, Contact contact) {
1451								activity.runOnUiThread(new Runnable() {
1452									@Override
1453									public void run() {
1454										Toast.makeText(activity,
1455												R.string.unable_to_connect_to_keychain,
1456												Toast.LENGTH_SHORT
1457										).show();
1458									}
1459								});
1460								mSendingPgpMessage.set(false);
1461							}
1462						});
1463
1464			} else {
1465				showNoPGPKeyDialog(false,
1466						new DialogInterface.OnClickListener() {
1467
1468							@Override
1469							public void onClick(DialogInterface dialog,
1470												int which) {
1471								conversation
1472										.setNextEncryption(Message.ENCRYPTION_NONE);
1473								xmppService.updateConversation(conversation);
1474								message.setEncryption(Message.ENCRYPTION_NONE);
1475								xmppService.sendMessage(message);
1476								messageSent();
1477							}
1478						});
1479			}
1480		} else {
1481			if (conversation.getMucOptions().pgpKeysInUse()) {
1482				if (!conversation.getMucOptions().everybodyHasKeys()) {
1483					Toast warning = Toast
1484							.makeText(getActivity(),
1485									R.string.missing_public_keys,
1486									Toast.LENGTH_LONG);
1487					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1488					warning.show();
1489				}
1490				activity.encryptTextMessage(message);
1491			} else {
1492				showNoPGPKeyDialog(true,
1493						new DialogInterface.OnClickListener() {
1494
1495							@Override
1496							public void onClick(DialogInterface dialog,
1497												int which) {
1498								conversation
1499										.setNextEncryption(Message.ENCRYPTION_NONE);
1500								message.setEncryption(Message.ENCRYPTION_NONE);
1501								xmppService.updateConversation(conversation);
1502								xmppService.sendMessage(message);
1503								messageSent();
1504							}
1505						});
1506			}
1507		}
1508	}
1509
1510	public void showNoPGPKeyDialog(boolean plural,
1511								   DialogInterface.OnClickListener listener) {
1512		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1513		builder.setIconAttribute(android.R.attr.alertDialogIcon);
1514		if (plural) {
1515			builder.setTitle(getString(R.string.no_pgp_keys));
1516			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
1517		} else {
1518			builder.setTitle(getString(R.string.no_pgp_key));
1519			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
1520		}
1521		builder.setNegativeButton(getString(R.string.cancel), null);
1522		builder.setPositiveButton(getString(R.string.send_unencrypted),
1523				listener);
1524		builder.create().show();
1525	}
1526
1527	protected void sendAxolotlMessage(final Message message) {
1528		final ConversationActivity activity = (ConversationActivity) getActivity();
1529		final XmppConnectionService xmppService = activity.xmppConnectionService;
1530		xmppService.sendMessage(message);
1531		messageSent();
1532	}
1533
1534	protected void sendOtrMessage(final Message message) {
1535		final ConversationActivity activity = (ConversationActivity) getActivity();
1536		final XmppConnectionService xmppService = activity.xmppConnectionService;
1537		activity.selectPresence(message.getConversation(),
1538				new OnPresenceSelected() {
1539
1540					@Override
1541					public void onPresenceSelected() {
1542						message.setCounterpart(conversation.getNextCounterpart());
1543						xmppService.sendMessage(message);
1544						messageSent();
1545					}
1546				});
1547	}
1548
1549	public void appendText(String text) {
1550		if (text == null) {
1551			return;
1552		}
1553		String previous = this.mEditMessage.getText().toString();
1554		if (previous.length() != 0 && !previous.endsWith(" ")) {
1555			text = " " + text;
1556		}
1557		this.mEditMessage.append(text);
1558	}
1559
1560	@Override
1561	public boolean onEnterPressed() {
1562		if (activity.enterIsSend()) {
1563			sendMessage();
1564			return true;
1565		} else {
1566			return false;
1567		}
1568	}
1569
1570	@Override
1571	public void onTypingStarted() {
1572		Account.State status = conversation.getAccount().getStatus();
1573		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
1574			activity.xmppConnectionService.sendChatState(conversation);
1575		}
1576		activity.hideConversationsOverview();
1577		updateSendButton();
1578	}
1579
1580	@Override
1581	public void onTypingStopped() {
1582		Account.State status = conversation.getAccount().getStatus();
1583		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
1584			activity.xmppConnectionService.sendChatState(conversation);
1585		}
1586	}
1587
1588	@Override
1589	public void onTextDeleted() {
1590		Account.State status = conversation.getAccount().getStatus();
1591		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1592			activity.xmppConnectionService.sendChatState(conversation);
1593		}
1594		updateSendButton();
1595	}
1596
1597	@Override
1598	public void onTextChanged() {
1599		if (conversation != null && conversation.getCorrectingMessage() != null) {
1600			updateSendButton();
1601		}
1602	}
1603
1604	private int completionIndex = 0;
1605	private int lastCompletionLength = 0;
1606	private String incomplete;
1607	private int lastCompletionCursor;
1608	private boolean firstWord = false;
1609
1610	@Override
1611	public boolean onTabPressed(boolean repeated) {
1612		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
1613			return false;
1614		}
1615		if (repeated) {
1616			completionIndex++;
1617		} else {
1618			lastCompletionLength = 0;
1619			completionIndex = 0;
1620			final String content = mEditMessage.getText().toString();
1621			lastCompletionCursor = mEditMessage.getSelectionEnd();
1622			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ",lastCompletionCursor-1) + 1 : 0;
1623			firstWord = start == 0;
1624			incomplete = content.substring(start,lastCompletionCursor);
1625		}
1626		List<String> completions = new ArrayList<>();
1627		for(MucOptions.User user : conversation.getMucOptions().getUsers()) {
1628			String name = user.getName();
1629			if (name != null && name.startsWith(incomplete)) {
1630				completions.add(name+(firstWord ? ": " : " "));
1631			}
1632		}
1633		Collections.sort(completions);
1634		if (completions.size() > completionIndex) {
1635			String completion = completions.get(completionIndex).substring(incomplete.length());
1636			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1637			mEditMessage.getEditableText().insert(lastCompletionCursor, completion);
1638			lastCompletionLength = completion.length();
1639		} else {
1640			completionIndex = -1;
1641			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1642			lastCompletionLength = 0;
1643		}
1644		return true;
1645	}
1646
1647	@Override
1648	public void onActivityResult(int requestCode, int resultCode,
1649	                                final Intent data) {
1650		if (resultCode == Activity.RESULT_OK) {
1651			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1652				activity.getSelectedConversation().getAccount().getPgpDecryptionService().continueDecryption(true);
1653			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_TEXT) {
1654				final String body = mEditMessage.getText().toString();
1655				Message message = new Message(conversation, body, conversation.getNextEncryption());
1656				sendAxolotlMessage(message);
1657			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_MENU) {
1658				int choice = data.getIntExtra("choice", ConversationActivity.ATTACHMENT_CHOICE_INVALID);
1659				activity.selectPresenceToAttachFile(choice, conversation.getNextEncryption());
1660			}
1661		} else if (resultCode == Activity.RESULT_CANCELED) {
1662			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1663				// discard the message to prevent decryption being blocked
1664				conversation.getAccount().getPgpDecryptionService().giveUpCurrentDecryption();
1665			}
1666		}
1667	}
1668
1669}