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