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.UUID;
  50import java.util.concurrent.atomic.AtomicBoolean;
  51
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.entities.Account;
  55import eu.siacs.conversations.entities.Blockable;
  56import eu.siacs.conversations.entities.Contact;
  57import eu.siacs.conversations.entities.Conversation;
  58import eu.siacs.conversations.entities.DownloadableFile;
  59import eu.siacs.conversations.entities.Message;
  60import eu.siacs.conversations.entities.MucOptions;
  61import eu.siacs.conversations.entities.Presence;
  62import eu.siacs.conversations.entities.Transferable;
  63import eu.siacs.conversations.entities.TransferablePlaceholder;
  64import eu.siacs.conversations.http.HttpDownloadConnection;
  65import eu.siacs.conversations.persistance.FileBackend;
  66import eu.siacs.conversations.services.MessageArchiveService;
  67import eu.siacs.conversations.services.XmppConnectionService;
  68import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
  69import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
  70import eu.siacs.conversations.ui.adapter.MessageAdapter;
  71import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
  72import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
  73import eu.siacs.conversations.ui.widget.ListSelectionManager;
  74import eu.siacs.conversations.utils.NickValidityChecker;
  75import eu.siacs.conversations.utils.UIHelper;
  76import eu.siacs.conversations.xmpp.XmppConnection;
  77import eu.siacs.conversations.xmpp.chatstate.ChatState;
  78import eu.siacs.conversations.xmpp.jid.Jid;
  79
  80public class ConversationFragment extends Fragment implements EditMessage.KeyboardListener {
  81
  82	protected Conversation conversation;
  83	private OnClickListener leaveMuc = new OnClickListener() {
  84
  85		@Override
  86		public void onClick(View v) {
  87			activity.endConversation(conversation);
  88		}
  89	};
  90	private OnClickListener joinMuc = new OnClickListener() {
  91
  92		@Override
  93		public void onClick(View v) {
  94			activity.xmppConnectionService.joinMuc(conversation);
  95		}
  96	};
  97	private OnClickListener enterPassword = new OnClickListener() {
  98
  99		@Override
 100		public void onClick(View v) {
 101			MucOptions muc = conversation.getMucOptions();
 102			String password = muc.getPassword();
 103			if (password == null) {
 104				password = "";
 105			}
 106			activity.quickPasswordEdit(password, new OnValueEdited() {
 107
 108				@Override
 109				public void onValueEdited(String value) {
 110					activity.xmppConnectionService.providePasswordForMuc(
 111							conversation, value);
 112				}
 113			});
 114		}
 115	};
 116	protected ListView messagesView;
 117	final protected List<Message> messageList = new ArrayList<>();
 118	protected MessageAdapter messageListAdapter;
 119	private EditMessage mEditMessage;
 120	private ImageButton mSendButton;
 121	private RelativeLayout snackbar;
 122	private TextView snackbarMessage;
 123	private TextView snackbarAction;
 124	private Toast messageLoaderToast;
 125
 126	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 127
 128		@Override
 129		public void onScrollStateChanged(AbsListView view, int scrollState) {
 130			// TODO Auto-generated method stub
 131
 132		}
 133
 134		@Override
 135		public void onScroll(AbsListView view, int firstVisibleItem,
 136							 int visibleItemCount, int totalItemCount) {
 137			synchronized (ConversationFragment.this.messageList) {
 138				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true,false) && messageList.size() > 0) {
 139					long timestamp;
 140					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 141						timestamp = messageList.get(1).getTimeSent();
 142					} else {
 143						timestamp = messageList.get(0).getTimeSent();
 144					}
 145					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 146						@Override
 147						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 148							if (ConversationFragment.this.conversation != conversation) {
 149								conversation.messagesLoaded.set(true);
 150								return;
 151							}
 152							activity.runOnUiThread(new Runnable() {
 153								@Override
 154								public void run() {
 155									final int oldPosition = messagesView.getFirstVisiblePosition();
 156									Message message = null;
 157									int childPos;
 158									for(childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 159										message =  messageList.get(oldPosition + childPos);
 160										if (message.getType() != Message.TYPE_STATUS) {
 161											break;
 162										}
 163									}
 164									final String uuid = message != null ? message.getUuid() : null;
 165									View v = messagesView.getChildAt(childPos);
 166									final int pxOffset = (v == null) ? 0 : v.getTop();
 167									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 168									try {
 169										updateStatusMessages();
 170									} catch (IllegalStateException e) {
 171										Log.d(Config.LOGTAG,"caught illegal state exception while updating status messages");
 172									}
 173									messageListAdapter.notifyDataSetChanged();
 174									int pos = Math.max(getIndexOf(uuid,messageList),0);
 175									messagesView.setSelectionFromTop(pos, pxOffset);
 176									if (messageLoaderToast != null) {
 177										messageLoaderToast.cancel();
 178									}
 179									conversation.messagesLoaded.set(true);
 180								}
 181							});
 182						}
 183
 184						@Override
 185						public void informUser(final int resId) {
 186
 187							activity.runOnUiThread(new Runnable() {
 188								@Override
 189								public void run() {
 190									if (messageLoaderToast != null) {
 191										messageLoaderToast.cancel();
 192									}
 193									if (ConversationFragment.this.conversation != conversation) {
 194										return;
 195									}
 196									messageLoaderToast = Toast.makeText(activity, resId, Toast.LENGTH_LONG);
 197									messageLoaderToast.show();
 198								}
 199							});
 200
 201						}
 202					});
 203
 204				}
 205			}
 206		}
 207	};
 208
 209	private int getIndexOf(String uuid, List<Message> messages) {
 210		if (uuid == null) {
 211			return messages.size() - 1;
 212		}
 213		for(int i = 0; i < messages.size(); ++i) {
 214			if (uuid.equals(messages.get(i).getUuid())) {
 215				return i;
 216			} else {
 217				Message next = messages.get(i);
 218				while(next != null && next.wasMergedIntoPrevious()) {
 219					if (uuid.equals(next.getUuid())) {
 220						return i;
 221					}
 222					next = next.next();
 223				}
 224
 225			}
 226		}
 227		return -1;
 228	}
 229
 230	public Pair<Integer,Integer> getScrollPosition() {
 231		if (this.messagesView.getCount() == 0 ||
 232				this.messagesView.getLastVisiblePosition() == this.messagesView.getCount() - 1) {
 233			return null;
 234		} else {
 235			final int pos = messagesView.getFirstVisiblePosition();
 236			final View view = messagesView.getChildAt(0);
 237			if (view == null) {
 238				return null;
 239			} else {
 240				return new Pair<>(pos, view.getTop());
 241			}
 242		}
 243	}
 244
 245	public void setScrollPosition(Pair<Integer,Integer> scrollPosition) {
 246		if (scrollPosition != null) {
 247			this.messagesView.setSelectionFromTop(scrollPosition.first, scrollPosition.second);
 248		}
 249	}
 250
 251	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 252
 253		@Override
 254		public void onClick(View v) {
 255			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 256			if (pendingIntent != null) {
 257				try {
 258					activity.startIntentSenderForResult(pendingIntent.getIntentSender(),
 259                            ConversationActivity.REQUEST_DECRYPT_PGP,
 260                            null,
 261                            0,
 262                            0,
 263                            0);
 264				} catch (SendIntentException e) {
 265					Toast.makeText(activity,R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 266					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 267				}
 268			}
 269			updateSnackBar(conversation);
 270		}
 271	};
 272	protected OnClickListener clickToVerify = new OnClickListener() {
 273
 274		@Override
 275		public void onClick(View v) {
 276			activity.verifyOtrSessionDialog(conversation, v);
 277		}
 278	};
 279	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
 280
 281		@Override
 282		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 283			if (actionId == EditorInfo.IME_ACTION_SEND) {
 284				InputMethodManager imm = (InputMethodManager) v.getContext()
 285						.getSystemService(Context.INPUT_METHOD_SERVICE);
 286				if (imm.isFullscreenMode()) {
 287					imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 288				}
 289				sendMessage();
 290				return true;
 291			} else {
 292				return false;
 293			}
 294		}
 295	};
 296	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 297		@Override
 298		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 299			// try to get permission to read the image, if applicable
 300			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 301				try {
 302					inputContentInfo.requestPermission();
 303				} catch (Exception e) {
 304					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 305					Toast.makeText(
 306							activity,
 307							activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()),
 308							Toast.LENGTH_LONG
 309					).show();
 310					return false;
 311				}
 312			}
 313			if (activity.hasStoragePermission(ConversationActivity.REQUEST_ADD_EDITOR_CONTENT)) {
 314				activity.attachImageToConversation(inputContentInfo.getContentUri());
 315			} else {
 316				activity.mPendingEditorContent = inputContentInfo.getContentUri();
 317			}
 318			return true;
 319		}
 320	};
 321	private OnClickListener mSendButtonListener = new OnClickListener() {
 322
 323		@Override
 324		public void onClick(View v) {
 325			Object tag = v.getTag();
 326			if (tag instanceof SendButtonAction) {
 327				SendButtonAction action = (SendButtonAction) tag;
 328				switch (action) {
 329					case TAKE_PHOTO:
 330						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_TAKE_PHOTO);
 331						break;
 332					case RECORD_VIDEO:
 333						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_RECORD_VIDEO);
 334						break;
 335					case SEND_LOCATION:
 336						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_LOCATION);
 337						break;
 338					case RECORD_VOICE:
 339						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_RECORD_VOICE);
 340						break;
 341					case CHOOSE_PICTURE:
 342						activity.attachFile(ConversationActivity.ATTACHMENT_CHOICE_CHOOSE_IMAGE);
 343						break;
 344					case CANCEL:
 345						if (conversation != null) {
 346							if(conversation.setCorrectingMessage(null)) {
 347								mEditMessage.setText("");
 348								mEditMessage.append(conversation.getDraftMessage());
 349								conversation.setDraftMessage(null);
 350							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 351								conversation.setNextCounterpart(null);
 352							}
 353							updateChatMsgHint();
 354							updateSendButton();
 355							updateEditablity();
 356						}
 357						break;
 358					default:
 359						sendMessage();
 360				}
 361			} else {
 362				sendMessage();
 363			}
 364		}
 365	};
 366	private OnClickListener clickToMuc = new OnClickListener() {
 367
 368		@Override
 369		public void onClick(View v) {
 370			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 371			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 372			intent.putExtra("uuid", conversation.getUuid());
 373			startActivity(intent);
 374		}
 375	};
 376	private ConversationActivity activity;
 377	private Message selectedMessage;
 378
 379	private void sendMessage() {
 380		final String body = mEditMessage.getText().toString();
 381		final Conversation conversation = this.conversation;
 382		if (body.length() == 0 || conversation == null) {
 383			return;
 384		}
 385		final Message message;
 386		if (conversation.getCorrectingMessage() == null) {
 387			message = new Message(conversation, body, conversation.getNextEncryption());
 388			if (conversation.getMode() == Conversation.MODE_MULTI) {
 389				if (conversation.getNextCounterpart() != null) {
 390					message.setCounterpart(conversation.getNextCounterpart());
 391					message.setType(Message.TYPE_PRIVATE);
 392				}
 393			}
 394		} else {
 395			message = conversation.getCorrectingMessage();
 396			message.setBody(body);
 397			message.setEdited(message.getUuid());
 398			message.setUuid(UUID.randomUUID().toString());
 399		}
 400		switch (message.getConversation().getNextEncryption()) {
 401			case Message.ENCRYPTION_OTR:
 402				sendOtrMessage(message);
 403				break;
 404			case Message.ENCRYPTION_PGP:
 405				sendPgpMessage(message);
 406				break;
 407			case Message.ENCRYPTION_AXOLOTL:
 408				if(!activity.trustKeysIfNeeded(ConversationActivity.REQUEST_TRUST_KEYS_TEXT)) {
 409					sendAxolotlMessage(message);
 410				}
 411				break;
 412			default:
 413				sendPlainTextMessage(message);
 414		}
 415	}
 416
 417	public void updateChatMsgHint() {
 418		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 419		if (conversation.getCorrectingMessage() != null) {
 420			this.mEditMessage.setHint(R.string.send_corrected_message);
 421		} else if (multi && conversation.getNextCounterpart() != null) {
 422			this.mEditMessage.setHint(getString(
 423					R.string.send_private_message_to,
 424					conversation.getNextCounterpart().getResourcepart()));
 425		} else if (multi && !conversation.getMucOptions().participating()) {
 426			this.mEditMessage.setHint(R.string.you_are_not_participating);
 427		} else {
 428			this.mEditMessage.setHint(UIHelper.getMessageHint(activity,conversation));
 429			getActivity().invalidateOptionsMenu();
 430		}
 431	}
 432
 433	public void setupIme() {
 434		if (activity != null) {
 435			if (activity.usingEnterKey() && activity.enterIsSend()) {
 436				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_FLAG_MULTI_LINE));
 437				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 438			} else if (activity.usingEnterKey()) {
 439				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 440				mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
 441			} else {
 442				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
 443				mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
 444			}
 445		}
 446	}
 447
 448	@Override
 449	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 450		final View view = inflater.inflate(R.layout.fragment_conversation, container, false);
 451		view.setOnClickListener(null);
 452
 453		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
 454		mEditMessage.setOnClickListener(new OnClickListener() {
 455
 456			@Override
 457			public void onClick(View v) {
 458				if (activity != null) {
 459					activity.hideConversationsOverview();
 460				}
 461			}
 462		});
 463
 464		mEditMessage.setOnEditorActionListener(mEditorActionListener);
 465		mEditMessage.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 466
 467		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
 468		mSendButton.setOnClickListener(this.mSendButtonListener);
 469
 470		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
 471		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
 472		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
 473
 474		messagesView = (ListView) view.findViewById(R.id.messages_view);
 475		messagesView.setOnScrollListener(mOnScrollListener);
 476		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 477		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
 478		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
 479
 480			@Override
 481			public void onContactPictureClicked(Message message) {
 482				if (message.getStatus() <= Message.STATUS_RECEIVED) {
 483					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 484						Jid user = message.getCounterpart();
 485						if (user != null && !user.isBareJid()) {
 486							if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 487								Toast.makeText(activity,activity.getString(R.string.user_has_left_conference,user.getResourcepart()),Toast.LENGTH_SHORT).show();
 488							}
 489							highlightInConference(user.getResourcepart());
 490						}
 491					} else {
 492						if (!message.getContact().isSelf()) {
 493							String fingerprint;
 494							if (message.getEncryption() == Message.ENCRYPTION_PGP
 495									|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 496								fingerprint = "pgp";
 497							} else {
 498								fingerprint = message.getFingerprint();
 499							}
 500							activity.switchToContactDetails(message.getContact(), fingerprint);
 501						}
 502					}
 503				} else {
 504					Account account = message.getConversation().getAccount();
 505					Intent intent;
 506					if (activity.manuallyChangePresence()) {
 507						intent = new Intent(activity, SetPresenceActivity.class);
 508						intent.putExtra(SetPresenceActivity.EXTRA_ACCOUNT, account.getJid().toBareJid().toString());
 509					} else {
 510						intent = new Intent(activity, EditAccountActivity.class);
 511						intent.putExtra("jid", account.getJid().toBareJid().toString());
 512						String fingerprint;
 513						if (message.getEncryption() == Message.ENCRYPTION_PGP
 514								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 515							fingerprint = "pgp";
 516						} else if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 517							fingerprint = "otr";
 518						} else {
 519							fingerprint = message.getFingerprint();
 520						}
 521						intent.putExtra("fingerprint", fingerprint);
 522					}
 523					startActivity(intent);
 524				}
 525			}
 526		});
 527		messageListAdapter
 528				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
 529
 530					@Override
 531					public void onContactPictureLongClicked(Message message) {
 532						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 533							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 534								Jid user = message.getCounterpart();
 535								if (user != null && !user.isBareJid()) {
 536									if (message.getConversation().getMucOptions().isUserInRoom(user)) {
 537										privateMessageWith(user);
 538									} else {
 539										Toast.makeText(activity, activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 540									}
 541								}
 542							}
 543						} else {
 544							activity.showQrCode();
 545						}
 546					}
 547				});
 548		messageListAdapter.setOnQuoteListener(new MessageAdapter.OnQuoteListener() {
 549
 550			@Override
 551			public void onQuote(String text) {
 552				if (mEditMessage.isEnabled()) {
 553					text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 554					Editable editable = mEditMessage.getEditableText();
 555					int position = mEditMessage.getSelectionEnd();
 556					if (position == -1) position = editable.length();
 557					if (position > 0 && editable.charAt(position - 1) != '\n') {
 558						editable.insert(position++, "\n");
 559					}
 560					editable.insert(position, text);
 561					position += text.length();
 562					editable.insert(position++, "\n");
 563					if (position < editable.length() && editable.charAt(position) != '\n') {
 564						editable.insert(position, "\n");
 565					}
 566					mEditMessage.setSelection(position);
 567					mEditMessage.requestFocus();
 568					InputMethodManager inputMethodManager = (InputMethodManager) getActivity()
 569							.getSystemService(Context.INPUT_METHOD_SERVICE);
 570					if (inputMethodManager != null) {
 571						inputMethodManager.showSoftInput(mEditMessage, InputMethodManager.SHOW_IMPLICIT);
 572					}
 573				}
 574			}
 575		});
 576		messagesView.setAdapter(messageListAdapter);
 577
 578		registerForContextMenu(messagesView);
 579
 580		return view;
 581	}
 582
 583	@Override
 584	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 585		synchronized (this.messageList) {
 586			super.onCreateContextMenu(menu, v, menuInfo);
 587			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 588			this.selectedMessage = this.messageList.get(acmi.position);
 589			populateContextMenu(menu);
 590		}
 591	}
 592
 593	private void populateContextMenu(ContextMenu menu) {
 594		final Message m = this.selectedMessage;
 595		final Transferable t = m.getTransferable();
 596		Message relevantForCorrection = m;
 597		while(relevantForCorrection.mergeable(relevantForCorrection.next())) {
 598			relevantForCorrection = relevantForCorrection.next();
 599		}
 600		if (m.getType() != Message.TYPE_STATUS) {
 601			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 602					&& m.getType() != Message.TYPE_PRIVATE
 603					&& t == null;
 604			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 605			menu.setHeaderTitle(R.string.message_options);
 606			MenuItem selectText = menu.findItem(R.id.select_text);
 607			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 608			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 609			MenuItem shareWith = menu.findItem(R.id.share_with);
 610			MenuItem sendAgain = menu.findItem(R.id.send_again);
 611			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 612			MenuItem downloadFile = menu.findItem(R.id.download_file);
 613			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 614			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 615			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
 616			if (!treatAsFile && !m.isGeoUri() && !m.treatAsDownloadable()) {
 617				selectText.setVisible(ListSelectionManager.isSupported());
 618			}
 619			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 620				retryDecryption.setVisible(true);
 621			}
 622			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 623					&& relevantForCorrection.isLastCorrectableMessage()
 624					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
 625				correctMessage.setVisible(true);
 626			}
 627			if (treatAsFile || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
 628				shareWith.setVisible(true);
 629			}
 630			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 631				sendAgain.setVisible(true);
 632			}
 633			if (m.hasFileOnRemoteHost()
 634					|| m.isGeoUri()
 635					|| m.treatAsDownloadable()
 636					|| (t != null && t instanceof HttpDownloadConnection)) {
 637				copyUrl.setVisible(true);
 638			}
 639			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
 640				downloadFile.setVisible(true);
 641				downloadFile.setTitle(activity.getString(R.string.download_x_file,UIHelper.getFileDescriptionString(activity, m)));
 642			}
 643			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
 644					|| m.getStatus() == Message.STATUS_UNSEND
 645					|| m.getStatus() == Message.STATUS_OFFERED;
 646			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
 647				cancelTransmission.setVisible(true);
 648			}
 649			if (treatAsFile) {
 650				String path = m.getRelativeFilePath();
 651				if (path == null || !path.startsWith("/")) {
 652					deleteFile.setVisible(true);
 653					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
 654				}
 655			}
 656			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
 657				showErrorMessage.setVisible(true);
 658			}
 659		}
 660	}
 661
 662	@Override
 663	public boolean onContextItemSelected(MenuItem item) {
 664		switch (item.getItemId()) {
 665			case R.id.share_with:
 666				shareWith(selectedMessage);
 667				return true;
 668			case R.id.select_text:
 669				selectText(selectedMessage);
 670				return true;
 671			case R.id.correct_message:
 672				correctMessage(selectedMessage);
 673				return true;
 674			case R.id.send_again:
 675				resendMessage(selectedMessage);
 676				return true;
 677			case R.id.copy_url:
 678				copyUrl(selectedMessage);
 679				return true;
 680			case R.id.download_file:
 681				downloadFile(selectedMessage);
 682				return true;
 683			case R.id.cancel_transmission:
 684				cancelTransmission(selectedMessage);
 685				return true;
 686			case R.id.retry_decryption:
 687				retryDecryption(selectedMessage);
 688				return true;
 689			case R.id.delete_file:
 690				deleteFile(selectedMessage);
 691				return true;
 692			case R.id.show_error_message:
 693				showErrorMessage(selectedMessage);
 694				return true;
 695			default:
 696				return super.onContextItemSelected(item);
 697		}
 698	}
 699
 700	private void showErrorMessage(final Message message) {
 701		AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 702		builder.setTitle(R.string.error_message);
 703		builder.setMessage(message.getErrorMessage());
 704		builder.setPositiveButton(R.string.confirm,null);
 705		builder.create().show();
 706	}
 707
 708	private void shareWith(Message message) {
 709		Intent shareIntent = new Intent();
 710		shareIntent.setAction(Intent.ACTION_SEND);
 711		if (message.isGeoUri()) {
 712			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
 713			shareIntent.setType("text/plain");
 714		} else if (!message.isFileOrImage()) {
 715			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
 716			shareIntent.setType("text/plain");
 717		} else {
 718			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 719			try {
 720				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(activity, file));
 721			} catch (SecurityException e) {
 722				Toast.makeText(activity, activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 723				return;
 724			}
 725			shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 726			String mime = message.getMimeType();
 727			if (mime == null) {
 728				mime = "*/*";
 729			}
 730			shareIntent.setType(mime);
 731		}
 732		try {
 733			activity.startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
 734		} catch (ActivityNotFoundException e) {
 735			//This should happen only on faulty androids because normally chooser is always available
 736			Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show();
 737		}
 738	}
 739
 740	private void selectText(Message message) {
 741		final int index;
 742		synchronized (this.messageList) {
 743			index = this.messageList.indexOf(message);
 744		}
 745		if (index >= 0) {
 746			final int first = this.messagesView.getFirstVisiblePosition();
 747			final int last = first + this.messagesView.getChildCount();
 748			if (index >= first && index < last)	{
 749				final View view = this.messagesView.getChildAt(index - first);
 750				final TextView messageBody = this.messageListAdapter.getMessageBody(view);
 751				if (messageBody != null) {
 752					ListSelectionManager.startSelection(messageBody);
 753				}
 754			}
 755		}
 756	}
 757
 758	private void deleteFile(Message message) {
 759		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
 760			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 761			activity.updateConversationList();
 762			updateMessages();
 763		}
 764	}
 765
 766	private void resendMessage(Message message) {
 767		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
 768			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
 769			if (!file.exists()) {
 770				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
 771				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
 772				activity.updateConversationList();
 773				updateMessages();
 774				return;
 775			}
 776		}
 777		activity.xmppConnectionService.resendFailedMessages(message);
 778	}
 779
 780	private void copyUrl(Message message) {
 781		final String url;
 782		final int resId;
 783		if (message.isGeoUri()) {
 784			resId = R.string.location;
 785			url = message.getBody();
 786		} else if (message.hasFileOnRemoteHost()) {
 787			resId = R.string.file_url;
 788			url = message.getFileParams().url.toString();
 789		} else {
 790			url = message.getBody().trim();
 791			resId = R.string.file_url;
 792		}
 793		if (activity.copyTextToClipboard(url, resId)) {
 794			Toast.makeText(activity, R.string.url_copied_to_clipboard,
 795					Toast.LENGTH_SHORT).show();
 796		}
 797	}
 798
 799	private void downloadFile(Message message) {
 800		activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message,true);
 801	}
 802
 803	private void cancelTransmission(Message message) {
 804		Transferable transferable = message.getTransferable();
 805		if (transferable != null) {
 806			transferable.cancel();
 807		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
 808			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
 809		}
 810	}
 811
 812	private void retryDecryption(Message message) {
 813		message.setEncryption(Message.ENCRYPTION_PGP);
 814		activity.updateConversationList();
 815		updateMessages();
 816		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
 817	}
 818
 819	protected void privateMessageWith(final Jid counterpart) {
 820		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
 821			activity.xmppConnectionService.sendChatState(conversation);
 822		}
 823		this.mEditMessage.setText("");
 824		this.conversation.setNextCounterpart(counterpart);
 825		updateChatMsgHint();
 826		updateSendButton();
 827		updateEditablity();
 828	}
 829
 830	private void correctMessage(Message message) {
 831		while(message.mergeable(message.next())) {
 832			message = message.next();
 833		}
 834		this.conversation.setCorrectingMessage(message);
 835		final Editable editable = mEditMessage.getText();
 836		this.conversation.setDraftMessage(editable.toString());
 837		this.mEditMessage.setText("");
 838		this.mEditMessage.append(message.getBody());
 839
 840	}
 841
 842	protected void highlightInConference(String nick) {
 843		final Editable editable = mEditMessage.getText();
 844		String oldString = editable.toString().trim();
 845		final int pos = mEditMessage.getSelectionStart();
 846		if (oldString.isEmpty() || pos == 0) {
 847			editable.insert(0, nick + ": ");
 848		} else {
 849			final char before = editable.charAt(pos - 1);
 850			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
 851			if (before == '\n') {
 852				editable.insert(pos, nick + ": ");
 853			} else {
 854				if (pos > 2 && editable.subSequence(pos-2,pos).toString().equals(": ")) {
 855					if (NickValidityChecker.check(conversation,Arrays.asList(editable.subSequence(0,pos-2).toString().split(", ")))) {
 856						editable.insert(pos - 2, ", " + nick);
 857						return;
 858					}
 859				}
 860				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
 861				if (Character.isWhitespace(after)) {
 862					mEditMessage.setSelection(mEditMessage.getSelectionStart() + 1);
 863				}
 864			}
 865		}
 866	}
 867
 868	@Override
 869	public void onStop() {
 870		super.onStop();
 871		if (activity == null || !activity.isChangingConfigurations()) {
 872			messageListAdapter.stopAudioPlayer();
 873		}
 874		if (this.conversation != null) {
 875			final String msg = mEditMessage.getText().toString();
 876			this.conversation.setNextMessage(msg);
 877			updateChatState(this.conversation, msg);
 878		}
 879	}
 880
 881	private void updateChatState(final Conversation conversation, final String msg) {
 882		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
 883		Account.State status = conversation.getAccount().getStatus();
 884		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
 885			activity.xmppConnectionService.sendChatState(conversation);
 886		}
 887	}
 888
 889	public boolean reInit(Conversation conversation) {
 890		if (conversation == null) {
 891			return false;
 892		}
 893		this.activity = (ConversationActivity) getActivity();
 894		setupIme();
 895		if (this.conversation != null) {
 896			final String msg = mEditMessage.getText().toString();
 897			this.conversation.setNextMessage(msg);
 898			if (this.conversation != conversation) {
 899				updateChatState(this.conversation, msg);
 900				messageListAdapter.stopAudioPlayer();
 901			}
 902			this.conversation.trim();
 903
 904		}
 905
 906		if (activity != null) {
 907			this.mSendButton.setContentDescription(activity.getString(R.string.send_message_to_x,conversation.getName()));
 908		}
 909
 910		this.conversation = conversation;
 911		this.mEditMessage.setKeyboardListener(null);
 912		this.mEditMessage.setText("");
 913		this.mEditMessage.append(this.conversation.getNextMessage());
 914		this.mEditMessage.setKeyboardListener(this);
 915		messageListAdapter.updatePreferences();
 916		this.messagesView.setAdapter(messageListAdapter);
 917		updateMessages();
 918		this.conversation.messagesLoaded.set(true);
 919		synchronized (this.messageList) {
 920			final Message first = conversation.getFirstUnreadMessage();
 921			final int bottom = Math.max(0, this.messageList.size() - 1);
 922			final int pos;
 923			if (first == null) {
 924				pos = bottom;
 925			} else {
 926				int i = getIndexOf(first.getUuid(), this.messageList);
 927				pos = i < 0 ? bottom : i;
 928			}
 929			messagesView.setSelection(pos);
 930			return pos == bottom;
 931		}
 932	}
 933
 934	private OnClickListener mEnableAccountListener = new OnClickListener() {
 935		@Override
 936		public void onClick(View v) {
 937			final Account account = conversation == null ? null : conversation.getAccount();
 938			if (account != null) {
 939				account.setOption(Account.OPTION_DISABLED, false);
 940				activity.xmppConnectionService.updateAccount(account);
 941			}
 942		}
 943	};
 944
 945	private OnClickListener mUnblockClickListener = new OnClickListener() {
 946		@Override
 947		public void onClick(final View v) {
 948			v.post(new Runnable() {
 949				@Override
 950				public void run() {
 951					v.setVisibility(View.INVISIBLE);
 952				}
 953			});
 954			if (conversation.isDomainBlocked()) {
 955				BlockContactDialog.show(activity, conversation);
 956			} else {
 957				activity.unblockConversation(conversation);
 958			}
 959		}
 960	};
 961
 962	private void showBlockSubmenu(View view) {
 963		final Jid jid = conversation.getJid();
 964			if (jid.isDomainJid()) {
 965				BlockContactDialog.show(activity, conversation);
 966			} else {
 967				PopupMenu popupMenu = new PopupMenu(activity, view);
 968				popupMenu.inflate(R.menu.block);
 969				popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
 970					@Override
 971					public boolean onMenuItemClick(MenuItem menuItem) {
 972						Blockable blockable;
 973						switch (menuItem.getItemId()) {
 974							case R.id.block_domain:
 975								blockable = conversation.getAccount().getRoster().getContact(jid.toDomainJid());
 976								break;
 977							default:
 978								blockable = conversation;
 979						}
 980						BlockContactDialog.show(activity, blockable);
 981						return true;
 982					}
 983				});
 984				popupMenu.show();
 985			}
 986	}
 987
 988	private OnClickListener mBlockClickListener = new OnClickListener() {
 989		@Override
 990		public void onClick(final View view) {
 991			showBlockSubmenu(view);
 992		}
 993	};
 994
 995	private OnClickListener mAddBackClickListener = new OnClickListener() {
 996
 997		@Override
 998		public void onClick(View v) {
 999			final Contact contact = conversation == null ? null : conversation.getContact();
1000			if (contact != null) {
1001				activity.xmppConnectionService.createContact(contact);
1002				activity.switchToContactDetails(contact);
1003			}
1004		}
1005	};
1006
1007	private View.OnLongClickListener mLongPressBlockListener = new View.OnLongClickListener() {
1008		@Override
1009		public boolean onLongClick(View v) {
1010			showBlockSubmenu(v);
1011			return true;
1012		}
1013	};
1014
1015	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
1016		@Override
1017		public void onClick(View v) {
1018			final Contact contact = conversation == null ? null : conversation.getContact();
1019			if (contact != null) {
1020				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
1021						activity.xmppConnectionService.getPresenceGenerator()
1022								.sendPresenceUpdatesTo(contact));
1023				hideSnackbar();
1024			}
1025		}
1026	};
1027
1028	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
1029		@Override
1030		public void onClick(View view) {
1031			Intent intent = new Intent(activity, VerifyOTRActivity.class);
1032			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
1033			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
1034			intent.putExtra(VerifyOTRActivity.EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
1035			intent.putExtra("mode", VerifyOTRActivity.MODE_ANSWER_QUESTION);
1036			startActivity(intent);
1037		}
1038	};
1039
1040	private void updateSnackBar(final Conversation conversation) {
1041		final Account account = conversation.getAccount();
1042		final XmppConnection connection = account.getXmppConnection();
1043		final int mode = conversation.getMode();
1044		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1045		if (account.getStatus() == Account.State.DISABLED) {
1046			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1047		} else if (conversation.isBlocked()) {
1048			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1049		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1050			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1051		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1052			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1053		} else if (mode == Conversation.MODE_MULTI
1054				&& !conversation.getMucOptions().online()
1055				&& account.getStatus() == Account.State.ONLINE) {
1056			switch (conversation.getMucOptions().getError()) {
1057				case NICK_IN_USE:
1058					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1059					break;
1060				case NO_RESPONSE:
1061					showSnackbar(R.string.joining_conference, 0, null);
1062					break;
1063				case SERVER_NOT_FOUND:
1064					if (conversation.receivedMessagesCount() > 0) {
1065						showSnackbar(R.string.remote_server_not_found,R.string.try_again, joinMuc);
1066					} else {
1067						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1068					}
1069					break;
1070				case PASSWORD_REQUIRED:
1071					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1072					break;
1073				case BANNED:
1074					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1075					break;
1076				case MEMBERS_ONLY:
1077					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1078					break;
1079				case KICKED:
1080					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1081					break;
1082				case UNKNOWN:
1083					showSnackbar(R.string.conference_unknown_error, R.string.join, joinMuc);
1084					break;
1085				case SHUTDOWN:
1086					showSnackbar(R.string.conference_shutdown, R.string.join, joinMuc);
1087					break;
1088				default:
1089					hideSnackbar();
1090					break;
1091			}
1092		} else if (account.hasPendingPgpIntent(conversation)) {
1093			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1094		} else if (mode == Conversation.MODE_SINGLE
1095				&& conversation.smpRequested()) {
1096			showSnackbar(R.string.smp_requested, R.string.verify, this.mAnswerSmpClickListener);
1097		} else if (mode == Conversation.MODE_SINGLE
1098				&& conversation.hasValidOtrSession()
1099				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
1100				&& (!conversation.isOtrFingerprintVerified())) {
1101			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
1102		} else if (connection != null
1103				&& connection.getFeatures().blocking()
1104				&& conversation.countMessages() != 0
1105				&& !conversation.isBlocked()
1106				&& conversation.isWithStranger()) {
1107			showSnackbar(R.string.received_message_from_stranger,R.string.block, mBlockClickListener);
1108		} else {
1109			hideSnackbar();
1110		}
1111	}
1112
1113	public void updateMessages() {
1114		synchronized (this.messageList) {
1115			if (getView() == null) {
1116				return;
1117			}
1118			final ConversationActivity activity = (ConversationActivity) getActivity();
1119			if (this.conversation != null) {
1120				conversation.populateWithMessages(ConversationFragment.this.messageList);
1121				updateSnackBar(conversation);
1122				updateStatusMessages();
1123				this.messageListAdapter.notifyDataSetChanged();
1124				updateChatMsgHint();
1125				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
1126					activity.sendReadMarkerIfNecessary(conversation);
1127				}
1128				updateSendButton();
1129				updateEditablity();
1130			}
1131		}
1132	}
1133
1134	protected void messageSent() {
1135		mSendingPgpMessage.set(false);
1136		mEditMessage.setText("");
1137		if (conversation.setCorrectingMessage(null)) {
1138			mEditMessage.append(conversation.getDraftMessage());
1139			conversation.setDraftMessage(null);
1140		}
1141		conversation.setNextMessage(mEditMessage.getText().toString());
1142		updateChatMsgHint();
1143		new Handler().post(new Runnable() {
1144			@Override
1145			public void run() {
1146				int size = messageList.size();
1147				messagesView.setSelection(size - 1);
1148			}
1149		});
1150	}
1151
1152	public void setFocusOnInputField() {
1153		mEditMessage.requestFocus();
1154	}
1155
1156	public void doneSendingPgpMessage() {
1157		mSendingPgpMessage.set(false);
1158	}
1159
1160	enum SendButtonAction {TEXT, TAKE_PHOTO, SEND_LOCATION, RECORD_VOICE, CANCEL, CHOOSE_PICTURE, RECORD_VIDEO;
1161
1162		public static SendButtonAction valueOfOrDefault(String setting, SendButtonAction text) {
1163			try {
1164				return valueOf(setting);
1165			} catch (IllegalArgumentException e) {
1166				return TEXT;
1167			}
1168		}
1169	}
1170
1171	private int getSendButtonImageResource(SendButtonAction action, Presence.Status status) {
1172		switch (action) {
1173			case TEXT:
1174				switch (status) {
1175					case CHAT:
1176					case ONLINE:
1177						return R.drawable.ic_send_text_online;
1178					case AWAY:
1179						return R.drawable.ic_send_text_away;
1180					case XA:
1181					case DND:
1182						return R.drawable.ic_send_text_dnd;
1183					default:
1184						return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1185				}
1186			case RECORD_VIDEO:
1187				switch (status) {
1188					case CHAT:
1189					case ONLINE:
1190						return R.drawable.ic_send_videocam_online;
1191					case AWAY:
1192						return R.drawable.ic_send_videocam_away;
1193					case XA:
1194					case DND:
1195						return R.drawable.ic_send_videocam_dnd;
1196					default:
1197						return activity.getThemeResource(R.attr.ic_send_videocam_offline, R.drawable.ic_send_videocam_offline);
1198				}
1199			case TAKE_PHOTO:
1200				switch (status) {
1201					case CHAT:
1202					case ONLINE:
1203						return R.drawable.ic_send_photo_online;
1204					case AWAY:
1205						return R.drawable.ic_send_photo_away;
1206					case XA:
1207					case DND:
1208						return R.drawable.ic_send_photo_dnd;
1209					default:
1210						return activity.getThemeResource(R.attr.ic_send_photo_offline, R.drawable.ic_send_photo_offline);
1211				}
1212			case RECORD_VOICE:
1213				switch (status) {
1214					case CHAT:
1215					case ONLINE:
1216						return R.drawable.ic_send_voice_online;
1217					case AWAY:
1218						return R.drawable.ic_send_voice_away;
1219					case XA:
1220					case DND:
1221						return R.drawable.ic_send_voice_dnd;
1222					default:
1223						return activity.getThemeResource(R.attr.ic_send_voice_offline, R.drawable.ic_send_voice_offline);
1224				}
1225			case SEND_LOCATION:
1226				switch (status) {
1227					case CHAT:
1228					case ONLINE:
1229						return R.drawable.ic_send_location_online;
1230					case AWAY:
1231						return R.drawable.ic_send_location_away;
1232					case XA:
1233					case DND:
1234						return R.drawable.ic_send_location_dnd;
1235					default:
1236						return activity.getThemeResource(R.attr.ic_send_location_offline, R.drawable.ic_send_location_offline);
1237				}
1238			case CANCEL:
1239				switch (status) {
1240					case CHAT:
1241					case ONLINE:
1242						return R.drawable.ic_send_cancel_online;
1243					case AWAY:
1244						return R.drawable.ic_send_cancel_away;
1245					case XA:
1246					case DND:
1247						return R.drawable.ic_send_cancel_dnd;
1248					default:
1249						return activity.getThemeResource(R.attr.ic_send_cancel_offline, R.drawable.ic_send_cancel_offline);
1250				}
1251			case CHOOSE_PICTURE:
1252				switch (status) {
1253					case CHAT:
1254					case ONLINE:
1255						return R.drawable.ic_send_picture_online;
1256					case AWAY:
1257						return R.drawable.ic_send_picture_away;
1258					case XA:
1259					case DND:
1260						return R.drawable.ic_send_picture_dnd;
1261					default:
1262						return activity.getThemeResource(R.attr.ic_send_picture_offline, R.drawable.ic_send_picture_offline);
1263				}
1264		}
1265		return activity.getThemeResource(R.attr.ic_send_text_offline, R.drawable.ic_send_text_offline);
1266	}
1267
1268	private void updateEditablity() {
1269		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
1270		this.mEditMessage.setFocusable(canWrite);
1271		this.mEditMessage.setFocusableInTouchMode(canWrite);
1272		this.mSendButton.setEnabled(canWrite);
1273		this.mEditMessage.setCursorVisible(canWrite);
1274	}
1275
1276	public void updateSendButton() {
1277		final Conversation c = this.conversation;
1278		final SendButtonAction action;
1279		final Presence.Status status;
1280		final String text = this.mEditMessage == null ? "" : this.mEditMessage.getText().toString();
1281		final boolean empty = text.length() == 0;
1282		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
1283		if (c.getCorrectingMessage() != null && (empty || text.equals(c.getCorrectingMessage().getBody()))) {
1284			action = SendButtonAction.CANCEL;
1285		} else if (conference && !c.getAccount().httpUploadAvailable()) {
1286			if (empty && c.getNextCounterpart() != null) {
1287				action = SendButtonAction.CANCEL;
1288			} else {
1289				action = SendButtonAction.TEXT;
1290			}
1291		} else {
1292			if (empty) {
1293				if (conference && c.getNextCounterpart() != null) {
1294					action = SendButtonAction.CANCEL;
1295				} else {
1296					String setting = activity.getPreferences().getString("quick_action", activity.getResources().getString(R.string.quick_action));
1297					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
1298						action = SendButtonAction.SEND_LOCATION;
1299					} else {
1300						if (setting.equals("recent")) {
1301							setting = activity.getPreferences().getString(ConversationActivity.RECENTLY_USED_QUICK_ACTION, SendButtonAction.TEXT.toString());
1302							action = SendButtonAction.valueOfOrDefault(setting,SendButtonAction.TEXT);
1303						} else {
1304							action = SendButtonAction.valueOfOrDefault(setting,SendButtonAction.TEXT);
1305						}
1306					}
1307				}
1308			} else {
1309				action = SendButtonAction.TEXT;
1310			}
1311		}
1312		if (activity.useSendButtonToIndicateStatus() && c.getAccount().getStatus() == Account.State.ONLINE) {
1313			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
1314				status = Presence.Status.OFFLINE;
1315			} else if (c.getMode() == Conversation.MODE_SINGLE) {
1316				status = c.getContact().getShownStatus();
1317			} else {
1318				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1319			}
1320		} else {
1321			status = Presence.Status.OFFLINE;
1322		}
1323		this.mSendButton.setTag(action);
1324		this.mSendButton.setImageResource(getSendButtonImageResource(action, status));
1325	}
1326
1327	protected void updateDateSeparators() {
1328		synchronized (this.messageList) {
1329			for(int i = 0; i < this.messageList.size(); ++i) {
1330				final Message current = this.messageList.get(i);
1331				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i-1).getTimeSent(),current.getTimeSent())) {
1332					this.messageList.add(i,Message.createDateSeparator(current));
1333					i++;
1334				}
1335			}
1336		}
1337	}
1338
1339	protected void updateStatusMessages() {
1340		updateDateSeparators();
1341		synchronized (this.messageList) {
1342			if (showLoadMoreMessages(conversation)) {
1343				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1344			}
1345			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1346				ChatState state = conversation.getIncomingChatState();
1347				if (state == ChatState.COMPOSING) {
1348					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1349				} else if (state == ChatState.PAUSED) {
1350					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1351				} else {
1352					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1353						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1354							return;
1355						} else {
1356							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1357								this.messageList.add(i + 1,
1358										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1359								return;
1360							}
1361						}
1362					}
1363				}
1364			} else {
1365				ChatState state = ChatState.COMPOSING;
1366				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state,5);
1367				if (users.size() == 0) {
1368					state = ChatState.PAUSED;
1369					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1370
1371				}
1372				if (users.size() > 0) {
1373					Message statusMessage;
1374					if (users.size() == 1) {
1375						MucOptions.User user = users.get(0);
1376						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
1377						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
1378						statusMessage.setTrueCounterpart(user.getRealJid());
1379						statusMessage.setCounterpart(user.getFullJid());
1380					} else {
1381						StringBuilder builder = new StringBuilder();
1382						for(MucOptions.User user : users) {
1383							if (builder.length() != 0) {
1384								builder.append(", ");
1385							}
1386							builder.append(UIHelper.getDisplayName(user));
1387						}
1388						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
1389						statusMessage = Message.createStatusMessage(conversation, getString(id, builder.toString()));
1390					}
1391					this.messageList.add(statusMessage);
1392				}
1393
1394			}
1395		}
1396	}
1397
1398	private boolean showLoadMoreMessages(final Conversation c) {
1399		final boolean mam = hasMamSupport(c);
1400		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
1401		return mam && (c.getLastClearHistory().getTimestamp() != 0  || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer()  && !service.queryInProgress(c)));
1402	}
1403
1404	private boolean hasMamSupport(final Conversation c) {
1405		if (c.getMode() == Conversation.MODE_SINGLE) {
1406			final XmppConnection connection = c.getAccount().getXmppConnection();
1407			return connection != null && connection.getFeatures().mam();
1408		} else {
1409			return c.getMucOptions().mamSupport();
1410		}
1411	}
1412
1413	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
1414		showSnackbar(message,action,clickListener,null);
1415	}
1416
1417	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
1418		snackbar.setVisibility(View.VISIBLE);
1419		snackbar.setOnClickListener(null);
1420		snackbarMessage.setText(message);
1421		snackbarMessage.setOnClickListener(null);
1422		snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
1423		if (action != 0) {
1424			snackbarAction.setText(action);
1425		}
1426		snackbarAction.setOnClickListener(clickListener);
1427		snackbarAction.setOnLongClickListener(longClickListener);
1428	}
1429
1430	protected void hideSnackbar() {
1431		snackbar.setVisibility(View.GONE);
1432	}
1433
1434	protected void sendPlainTextMessage(Message message) {
1435		ConversationActivity activity = (ConversationActivity) getActivity();
1436		activity.xmppConnectionService.sendMessage(message);
1437		messageSent();
1438	}
1439
1440	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
1441
1442	protected void sendPgpMessage(final Message message) {
1443		final ConversationActivity activity = (ConversationActivity) getActivity();
1444		final XmppConnectionService xmppService = activity.xmppConnectionService;
1445		final Contact contact = message.getConversation().getContact();
1446		if (!activity.hasPgp()) {
1447			activity.showInstallPgpDialog();
1448			return;
1449		}
1450		if (conversation.getAccount().getPgpSignature() == null) {
1451			activity.announcePgp(conversation.getAccount(), conversation, activity.onOpenPGPKeyPublished);
1452			return;
1453		}
1454		if (!mSendingPgpMessage.compareAndSet(false,true)) {
1455			Log.d(Config.LOGTAG,"sending pgp message already in progress");
1456		}
1457		if (conversation.getMode() == Conversation.MODE_SINGLE) {
1458			if (contact.getPgpKeyId() != 0) {
1459				xmppService.getPgpEngine().hasKey(contact,
1460						new UiCallback<Contact>() {
1461
1462							@Override
1463							public void userInputRequried(PendingIntent pi,
1464														  Contact contact) {
1465								activity.runIntent(
1466										pi,
1467										ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
1468							}
1469
1470							@Override
1471							public void success(Contact contact) {
1472								activity.encryptTextMessage(message);
1473							}
1474
1475							@Override
1476							public void error(int error, Contact contact) {
1477								activity.runOnUiThread(new Runnable() {
1478									@Override
1479									public void run() {
1480										Toast.makeText(activity,
1481												R.string.unable_to_connect_to_keychain,
1482												Toast.LENGTH_SHORT
1483										).show();
1484									}
1485								});
1486								mSendingPgpMessage.set(false);
1487							}
1488						});
1489
1490			} else {
1491				showNoPGPKeyDialog(false,
1492						new DialogInterface.OnClickListener() {
1493
1494							@Override
1495							public void onClick(DialogInterface dialog,
1496												int which) {
1497								conversation
1498										.setNextEncryption(Message.ENCRYPTION_NONE);
1499								xmppService.updateConversation(conversation);
1500								message.setEncryption(Message.ENCRYPTION_NONE);
1501								xmppService.sendMessage(message);
1502								messageSent();
1503							}
1504						});
1505			}
1506		} else {
1507			if (conversation.getMucOptions().pgpKeysInUse()) {
1508				if (!conversation.getMucOptions().everybodyHasKeys()) {
1509					Toast warning = Toast
1510							.makeText(getActivity(),
1511									R.string.missing_public_keys,
1512									Toast.LENGTH_LONG);
1513					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1514					warning.show();
1515				}
1516				activity.encryptTextMessage(message);
1517			} else {
1518				showNoPGPKeyDialog(true,
1519						new DialogInterface.OnClickListener() {
1520
1521							@Override
1522							public void onClick(DialogInterface dialog,
1523												int which) {
1524								conversation
1525										.setNextEncryption(Message.ENCRYPTION_NONE);
1526								message.setEncryption(Message.ENCRYPTION_NONE);
1527								xmppService.updateConversation(conversation);
1528								xmppService.sendMessage(message);
1529								messageSent();
1530							}
1531						});
1532			}
1533		}
1534	}
1535
1536	public void showNoPGPKeyDialog(boolean plural,
1537								   DialogInterface.OnClickListener listener) {
1538		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1539		builder.setIconAttribute(android.R.attr.alertDialogIcon);
1540		if (plural) {
1541			builder.setTitle(getString(R.string.no_pgp_keys));
1542			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
1543		} else {
1544			builder.setTitle(getString(R.string.no_pgp_key));
1545			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
1546		}
1547		builder.setNegativeButton(getString(R.string.cancel), null);
1548		builder.setPositiveButton(getString(R.string.send_unencrypted),
1549				listener);
1550		builder.create().show();
1551	}
1552
1553	protected void sendAxolotlMessage(final Message message) {
1554		final ConversationActivity activity = (ConversationActivity) getActivity();
1555		final XmppConnectionService xmppService = activity.xmppConnectionService;
1556		xmppService.sendMessage(message);
1557		messageSent();
1558	}
1559
1560	protected void sendOtrMessage(final Message message) {
1561		final ConversationActivity activity = (ConversationActivity) getActivity();
1562		final XmppConnectionService xmppService = activity.xmppConnectionService;
1563		activity.selectPresence(message.getConversation(),
1564				new OnPresenceSelected() {
1565
1566					@Override
1567					public void onPresenceSelected() {
1568						message.setCounterpart(conversation.getNextCounterpart());
1569						xmppService.sendMessage(message);
1570						messageSent();
1571					}
1572				});
1573	}
1574
1575	public void appendText(String text) {
1576		if (text == null) {
1577			return;
1578		}
1579		String previous = this.mEditMessage.getText().toString();
1580		if (previous.length() != 0 && !previous.endsWith(" ")) {
1581			text = " " + text;
1582		}
1583		this.mEditMessage.append(text);
1584	}
1585
1586	@Override
1587	public boolean onEnterPressed() {
1588		if (activity.enterIsSend()) {
1589			sendMessage();
1590			return true;
1591		} else {
1592			return false;
1593		}
1594	}
1595
1596	@Override
1597	public void onTypingStarted() {
1598		Account.State status = conversation.getAccount().getStatus();
1599		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
1600			activity.xmppConnectionService.sendChatState(conversation);
1601		}
1602		activity.hideConversationsOverview();
1603		updateSendButton();
1604	}
1605
1606	@Override
1607	public void onTypingStopped() {
1608		Account.State status = conversation.getAccount().getStatus();
1609		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
1610			activity.xmppConnectionService.sendChatState(conversation);
1611		}
1612	}
1613
1614	@Override
1615	public void onTextDeleted() {
1616		Account.State status = conversation.getAccount().getStatus();
1617		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1618			activity.xmppConnectionService.sendChatState(conversation);
1619		}
1620		updateSendButton();
1621	}
1622
1623	@Override
1624	public void onTextChanged() {
1625		if (conversation != null && conversation.getCorrectingMessage() != null) {
1626			updateSendButton();
1627		}
1628	}
1629
1630	private int completionIndex = 0;
1631	private int lastCompletionLength = 0;
1632	private String incomplete;
1633	private int lastCompletionCursor;
1634	private boolean firstWord = false;
1635
1636	@Override
1637	public boolean onTabPressed(boolean repeated) {
1638		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
1639			return false;
1640		}
1641		if (repeated) {
1642			completionIndex++;
1643		} else {
1644			lastCompletionLength = 0;
1645			completionIndex = 0;
1646			final String content = mEditMessage.getText().toString();
1647			lastCompletionCursor = mEditMessage.getSelectionEnd();
1648			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ",lastCompletionCursor-1) + 1 : 0;
1649			firstWord = start == 0;
1650			incomplete = content.substring(start,lastCompletionCursor);
1651		}
1652		List<String> completions = new ArrayList<>();
1653		for(MucOptions.User user : conversation.getMucOptions().getUsers()) {
1654			String name = user.getName();
1655			if (name != null && name.startsWith(incomplete)) {
1656				completions.add(name+(firstWord ? ": " : " "));
1657			}
1658		}
1659		Collections.sort(completions);
1660		if (completions.size() > completionIndex) {
1661			String completion = completions.get(completionIndex).substring(incomplete.length());
1662			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1663			mEditMessage.getEditableText().insert(lastCompletionCursor, completion);
1664			lastCompletionLength = completion.length();
1665		} else {
1666			completionIndex = -1;
1667			mEditMessage.getEditableText().delete(lastCompletionCursor,lastCompletionCursor + lastCompletionLength);
1668			lastCompletionLength = 0;
1669		}
1670		return true;
1671	}
1672
1673	@Override
1674	public void onActivityResult(int requestCode, int resultCode,
1675	                                final Intent data) {
1676		if (resultCode == Activity.RESULT_OK) {
1677			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1678				activity.getSelectedConversation().getAccount().getPgpDecryptionService().continueDecryption(true);
1679			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_TEXT) {
1680				final String body = mEditMessage.getText().toString();
1681				Message message = new Message(conversation, body, conversation.getNextEncryption());
1682				sendAxolotlMessage(message);
1683			} else if (requestCode == ConversationActivity.REQUEST_TRUST_KEYS_MENU) {
1684				int choice = data.getIntExtra("choice", ConversationActivity.ATTACHMENT_CHOICE_INVALID);
1685				activity.selectPresenceToAttachFile(choice, conversation.getNextEncryption());
1686			}
1687		} else if (resultCode == Activity.RESULT_CANCELED) {
1688			if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
1689				// discard the message to prevent decryption being blocked
1690				conversation.getAccount().getPgpDecryptionService().giveUpCurrentDecryption();
1691			}
1692		}
1693	}
1694
1695}