1package eu.siacs.conversations.ui;
   2
   3import android.annotation.SuppressLint;
   4import android.annotation.TargetApi;
   5import android.app.ActionBar;
   6import android.app.Activity;
   7import android.app.AlertDialog;
   8import android.app.AlertDialog.Builder;
   9import android.app.PendingIntent;
  10import android.content.ClipData;
  11import android.content.ClipboardManager;
  12import android.content.ComponentName;
  13import android.content.Context;
  14import android.content.DialogInterface;
  15import android.content.DialogInterface.OnClickListener;
  16import android.content.Intent;
  17import android.content.IntentSender.SendIntentException;
  18import android.content.ServiceConnection;
  19import android.content.SharedPreferences;
  20import android.content.pm.PackageManager;
  21import android.content.pm.ResolveInfo;
  22import android.content.res.Resources;
  23import android.graphics.Bitmap;
  24import android.graphics.Color;
  25import android.graphics.Point;
  26import android.graphics.drawable.BitmapDrawable;
  27import android.graphics.drawable.Drawable;
  28import android.net.Uri;
  29import android.nfc.NdefMessage;
  30import android.nfc.NdefRecord;
  31import android.nfc.NfcAdapter;
  32import android.nfc.NfcEvent;
  33import android.os.AsyncTask;
  34import android.os.Build;
  35import android.os.Bundle;
  36import android.os.Handler;
  37import android.os.IBinder;
  38import android.os.SystemClock;
  39import android.preference.PreferenceManager;
  40import android.text.InputType;
  41import android.util.DisplayMetrics;
  42import android.util.Log;
  43import android.view.MenuItem;
  44import android.view.View;
  45import android.view.inputmethod.InputMethodManager;
  46import android.widget.CompoundButton;
  47import android.widget.EditText;
  48import android.widget.ImageView;
  49import android.widget.LinearLayout;
  50import android.widget.TextView;
  51import android.widget.Toast;
  52
  53import com.google.zxing.BarcodeFormat;
  54import com.google.zxing.EncodeHintType;
  55import com.google.zxing.WriterException;
  56import com.google.zxing.common.BitMatrix;
  57import com.google.zxing.qrcode.QRCodeWriter;
  58import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
  59
  60import net.java.otr4j.session.SessionID;
  61
  62import org.whispersystems.libaxolotl.IdentityKey;
  63
  64import java.io.FileNotFoundException;
  65import java.lang.ref.WeakReference;
  66import java.util.ArrayList;
  67import java.util.Hashtable;
  68import java.util.List;
  69import java.util.concurrent.RejectedExecutionException;
  70
  71import eu.siacs.conversations.Config;
  72import eu.siacs.conversations.R;
  73import eu.siacs.conversations.crypto.axolotl.SQLiteAxolotlStore;
  74import eu.siacs.conversations.entities.Account;
  75import eu.siacs.conversations.entities.Contact;
  76import eu.siacs.conversations.entities.Conversation;
  77import eu.siacs.conversations.entities.Message;
  78import eu.siacs.conversations.entities.MucOptions;
  79import eu.siacs.conversations.entities.Presences;
  80import eu.siacs.conversations.services.AvatarService;
  81import eu.siacs.conversations.services.XmppConnectionService;
  82import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  83import eu.siacs.conversations.ui.widget.Switch;
  84import eu.siacs.conversations.utils.CryptoHelper;
  85import eu.siacs.conversations.utils.ExceptionHelper;
  86import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  87import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  88import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  89import eu.siacs.conversations.xmpp.jid.Jid;
  90
  91public abstract class XmppActivity extends Activity {
  92
  93	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
  94	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
  95
  96	public XmppConnectionService xmppConnectionService;
  97	public boolean xmppConnectionServiceBound = false;
  98	protected boolean registeredListeners = false;
  99
 100	protected int mPrimaryTextColor;
 101	protected int mSecondaryTextColor;
 102	protected int mTertiaryTextColor;
 103	protected int mPrimaryBackgroundColor;
 104	protected int mSecondaryBackgroundColor;
 105	protected int mColorRed;
 106	protected int mColorOrange;
 107	protected int mColorGreen;
 108	protected int mPrimaryColor;
 109
 110	protected boolean mUseSubject = true;
 111
 112	private DisplayMetrics metrics;
 113	protected int mTheme;
 114	protected boolean mUsingEnterKey = false;
 115
 116	private long mLastUiRefresh = 0;
 117	private Handler mRefreshUiHandler = new Handler();
 118	private Runnable mRefreshUiRunnable = new Runnable() {
 119		@Override
 120		public void run() {
 121			mLastUiRefresh = SystemClock.elapsedRealtime();
 122			refreshUiReal();
 123		}
 124	};
 125
 126	protected ConferenceInvite mPendingConferenceInvite = null;
 127
 128
 129	protected final void refreshUi() {
 130		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 131		if (diff > Config.REFRESH_UI_INTERVAL) {
 132			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 133			runOnUiThread(mRefreshUiRunnable);
 134		} else {
 135			final long next = Config.REFRESH_UI_INTERVAL - diff;
 136			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 137			mRefreshUiHandler.postDelayed(mRefreshUiRunnable,next);
 138		}
 139	}
 140
 141	abstract protected void refreshUiReal();
 142
 143	protected interface OnValueEdited {
 144		public void onValueEdited(String value);
 145	}
 146
 147	public interface OnPresenceSelected {
 148		public void onPresenceSelected();
 149	}
 150
 151	protected ServiceConnection mConnection = new ServiceConnection() {
 152
 153		@Override
 154		public void onServiceConnected(ComponentName className, IBinder service) {
 155			XmppConnectionBinder binder = (XmppConnectionBinder) service;
 156			xmppConnectionService = binder.getService();
 157			xmppConnectionServiceBound = true;
 158			if (!registeredListeners && shouldRegisterListeners()) {
 159				registerListeners();
 160				registeredListeners = true;
 161			}
 162			onBackendConnected();
 163		}
 164
 165		@Override
 166		public void onServiceDisconnected(ComponentName arg0) {
 167			xmppConnectionServiceBound = false;
 168		}
 169	};
 170
 171	@Override
 172	protected void onStart() {
 173		super.onStart();
 174		if (!xmppConnectionServiceBound) {
 175			connectToBackend();
 176		} else {
 177			if (!registeredListeners) {
 178				this.registerListeners();
 179				this.registeredListeners = true;
 180			}
 181			this.onBackendConnected();
 182		}
 183	}
 184
 185	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 186	protected boolean shouldRegisterListeners() {
 187		if  (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
 188			return !isDestroyed() && !isFinishing();
 189		} else {
 190			return !isFinishing();
 191		}
 192	}
 193
 194	public void connectToBackend() {
 195		Intent intent = new Intent(this, XmppConnectionService.class);
 196		intent.setAction("ui");
 197		startService(intent);
 198		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 199	}
 200
 201	@Override
 202	protected void onStop() {
 203		super.onStop();
 204		if (xmppConnectionServiceBound) {
 205			if (registeredListeners) {
 206				this.unregisterListeners();
 207				this.registeredListeners = false;
 208			}
 209			unbindService(mConnection);
 210			xmppConnectionServiceBound = false;
 211		}
 212	}
 213
 214	protected void hideKeyboard() {
 215		InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 216
 217		View focus = getCurrentFocus();
 218
 219		if (focus != null) {
 220
 221			inputManager.hideSoftInputFromWindow(focus.getWindowToken(),
 222					InputMethodManager.HIDE_NOT_ALWAYS);
 223		}
 224	}
 225
 226	public boolean hasPgp() {
 227		return xmppConnectionService.getPgpEngine() != null;
 228	}
 229
 230	public void showInstallPgpDialog() {
 231		Builder builder = new AlertDialog.Builder(this);
 232		builder.setTitle(getString(R.string.openkeychain_required));
 233		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 234		builder.setMessage(getText(R.string.openkeychain_required_long));
 235		builder.setNegativeButton(getString(R.string.cancel), null);
 236		builder.setNeutralButton(getString(R.string.restart),
 237				new OnClickListener() {
 238
 239					@Override
 240					public void onClick(DialogInterface dialog, int which) {
 241						if (xmppConnectionServiceBound) {
 242							unbindService(mConnection);
 243							xmppConnectionServiceBound = false;
 244						}
 245						stopService(new Intent(XmppActivity.this,
 246									XmppConnectionService.class));
 247						finish();
 248					}
 249				});
 250		builder.setPositiveButton(getString(R.string.install),
 251				new OnClickListener() {
 252
 253					@Override
 254					public void onClick(DialogInterface dialog, int which) {
 255						Uri uri = Uri
 256							.parse("market://details?id=org.sufficientlysecure.keychain");
 257						Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 258								uri);
 259						PackageManager manager = getApplicationContext()
 260							.getPackageManager();
 261						List<ResolveInfo> infos = manager
 262							.queryIntentActivities(marketIntent, 0);
 263						if (infos.size() > 0) {
 264							startActivity(marketIntent);
 265						} else {
 266							uri = Uri.parse("http://www.openkeychain.org/");
 267							Intent browserIntent = new Intent(
 268									Intent.ACTION_VIEW, uri);
 269							startActivity(browserIntent);
 270						}
 271						finish();
 272					}
 273				});
 274		builder.create().show();
 275	}
 276
 277	abstract void onBackendConnected();
 278
 279	protected void registerListeners() {
 280		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 281			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 282		}
 283		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 284			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 285		}
 286		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 287			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 288		}
 289		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 290			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 291		}
 292		if (this instanceof OnUpdateBlocklist) {
 293			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 294		}
 295		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 296			this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 297		}
 298		if (this instanceof OnKeyStatusUpdated) {
 299			this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 300		}
 301	}
 302
 303	protected void unregisterListeners() {
 304		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 305			this.xmppConnectionService.removeOnConversationListChangedListener();
 306		}
 307		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 308			this.xmppConnectionService.removeOnAccountListChangedListener();
 309		}
 310		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 311			this.xmppConnectionService.removeOnRosterUpdateListener();
 312		}
 313		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 314			this.xmppConnectionService.removeOnMucRosterUpdateListener();
 315		}
 316		if (this instanceof OnUpdateBlocklist) {
 317			this.xmppConnectionService.removeOnUpdateBlocklistListener();
 318		}
 319		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 320			this.xmppConnectionService.removeOnShowErrorToastListener();
 321		}
 322		if (this instanceof OnKeyStatusUpdated) {
 323			this.xmppConnectionService.removeOnNewKeysAvailableListener();
 324		}
 325	}
 326
 327	@Override
 328	public boolean onOptionsItemSelected(final MenuItem item) {
 329		switch (item.getItemId()) {
 330			case R.id.action_settings:
 331				startActivity(new Intent(this, SettingsActivity.class));
 332				break;
 333			case R.id.action_accounts:
 334				startActivity(new Intent(this, ManageAccountActivity.class));
 335				break;
 336			case android.R.id.home:
 337				finish();
 338				break;
 339			case R.id.action_show_qr_code:
 340				showQrCode();
 341				break;
 342		}
 343		return super.onOptionsItemSelected(item);
 344	}
 345
 346	@Override
 347	protected void onCreate(Bundle savedInstanceState) {
 348		super.onCreate(savedInstanceState);
 349		metrics = getResources().getDisplayMetrics();
 350		ExceptionHelper.init(getApplicationContext());
 351		mPrimaryTextColor = getResources().getColor(R.color.black87);
 352		mSecondaryTextColor = getResources().getColor(R.color.black54);
 353		mTertiaryTextColor = getResources().getColor(R.color.black12);
 354		mColorRed = getResources().getColor(R.color.red800);
 355		mColorOrange = getResources().getColor(R.color.orange500);
 356		mColorGreen = getResources().getColor(R.color.green500);
 357		mPrimaryColor = getResources().getColor(R.color.green500);
 358		mPrimaryBackgroundColor = getResources().getColor(R.color.grey50);
 359		mSecondaryBackgroundColor = getResources().getColor(R.color.grey200);
 360		this.mTheme = findTheme();
 361		setTheme(this.mTheme);
 362		this.mUsingEnterKey = usingEnterKey();
 363		mUseSubject = getPreferences().getBoolean("use_subject", true);
 364		final ActionBar ab = getActionBar();
 365		if (ab!=null) {
 366			ab.setDisplayHomeAsUpEnabled(true);
 367		}
 368	}
 369
 370	protected boolean usingEnterKey() {
 371		return getPreferences().getBoolean("display_enter_key", false);
 372	}
 373
 374	protected SharedPreferences getPreferences() {
 375		return PreferenceManager
 376			.getDefaultSharedPreferences(getApplicationContext());
 377	}
 378
 379	public boolean useSubjectToIdentifyConference() {
 380		return mUseSubject;
 381	}
 382
 383	public void switchToConversation(Conversation conversation) {
 384		switchToConversation(conversation, null, false);
 385	}
 386
 387	public void switchToConversation(Conversation conversation, String text,
 388			boolean newTask) {
 389		switchToConversation(conversation,text,null,false,newTask);
 390	}
 391
 392	public void highlightInMuc(Conversation conversation, String nick) {
 393		switchToConversation(conversation, null, nick, false, false);
 394	}
 395
 396	public void privateMsgInMuc(Conversation conversation, String nick) {
 397		switchToConversation(conversation, null, nick, true, false);
 398	}
 399
 400	private void switchToConversation(Conversation conversation, String text, String nick, boolean pm, boolean newTask) {
 401		Intent viewConversationIntent = new Intent(this,
 402				ConversationActivity.class);
 403		viewConversationIntent.setAction(Intent.ACTION_VIEW);
 404		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
 405				conversation.getUuid());
 406		if (text != null) {
 407			viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
 408		}
 409		if (nick != null) {
 410			viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
 411			viewConversationIntent.putExtra(ConversationActivity.PRIVATE_MESSAGE,pm);
 412		}
 413		viewConversationIntent.setType(ConversationActivity.VIEW_CONVERSATION);
 414		if (newTask) {
 415			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 416					| Intent.FLAG_ACTIVITY_NEW_TASK
 417					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
 418		} else {
 419			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 420					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
 421		}
 422		startActivity(viewConversationIntent);
 423		finish();
 424	}
 425
 426	public void switchToContactDetails(Contact contact) {
 427		switchToContactDetails(contact, null);
 428	}
 429
 430	public void switchToContactDetails(Contact contact, String messageFingerprint) {
 431		Intent intent = new Intent(this, ContactDetailsActivity.class);
 432		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 433		intent.putExtra("account", contact.getAccount().getJid().toBareJid().toString());
 434		intent.putExtra("contact", contact.getJid().toString());
 435		intent.putExtra("fingerprint", messageFingerprint);
 436		startActivity(intent);
 437	}
 438
 439	public void switchToAccount(Account account) {
 440		Intent intent = new Intent(this, EditAccountActivity.class);
 441		intent.putExtra("jid", account.getJid().toBareJid().toString());
 442		startActivity(intent);
 443	}
 444
 445	protected void inviteToConversation(Conversation conversation) {
 446		Intent intent = new Intent(getApplicationContext(),
 447				ChooseContactActivity.class);
 448		List<String> contacts = new ArrayList<>();
 449		if (conversation.getMode() == Conversation.MODE_MULTI) {
 450			for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
 451				Jid jid = user.getJid();
 452				if (jid != null) {
 453					contacts.add(jid.toBareJid().toString());
 454				}
 455			}
 456		} else {
 457			contacts.add(conversation.getJid().toBareJid().toString());
 458		}
 459		intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()]));
 460		intent.putExtra("conversation", conversation.getUuid());
 461		intent.putExtra("multiple", true);
 462		startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
 463	}
 464
 465	protected void announcePgp(Account account, final Conversation conversation) {
 466		xmppConnectionService.getPgpEngine().generateSignature(account,
 467				"online", new UiCallback<Account>() {
 468
 469					@Override
 470					public void userInputRequried(PendingIntent pi,
 471												  Account account) {
 472						try {
 473							startIntentSenderForResult(pi.getIntentSender(),
 474									REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 475						} catch (final SendIntentException ignored) {
 476						}
 477					}
 478
 479					@Override
 480					public void success(Account account) {
 481						xmppConnectionService.databaseBackend.updateAccount(account);
 482						xmppConnectionService.sendPresence(account);
 483						if (conversation != null) {
 484							conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 485							xmppConnectionService.databaseBackend.updateConversation(conversation);
 486						}
 487					}
 488
 489					@Override
 490					public void error(int error, Account account) {
 491						displayErrorDialog(error);
 492					}
 493				});
 494	}
 495
 496	protected void displayErrorDialog(final int errorCode) {
 497		runOnUiThread(new Runnable() {
 498
 499			@Override
 500			public void run() {
 501				AlertDialog.Builder builder = new AlertDialog.Builder(
 502						XmppActivity.this);
 503				builder.setIconAttribute(android.R.attr.alertDialogIcon);
 504				builder.setTitle(getString(R.string.error));
 505				builder.setMessage(errorCode);
 506				builder.setNeutralButton(R.string.accept, null);
 507				builder.create().show();
 508			}
 509		});
 510
 511	}
 512
 513	protected void showAddToRosterDialog(final Conversation conversation) {
 514		showAddToRosterDialog(conversation.getContact());
 515	}
 516
 517	protected void showAddToRosterDialog(final Contact contact) {
 518		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 519		builder.setTitle(contact.getJid().toString());
 520		builder.setMessage(getString(R.string.not_in_roster));
 521		builder.setNegativeButton(getString(R.string.cancel), null);
 522		builder.setPositiveButton(getString(R.string.add_contact),
 523				new DialogInterface.OnClickListener() {
 524
 525					@Override
 526					public void onClick(DialogInterface dialog, int which) {
 527						final Jid jid = contact.getJid();
 528						Account account = contact.getAccount();
 529						Contact contact = account.getRoster().getContact(jid);
 530						xmppConnectionService.createContact(contact);
 531					}
 532				});
 533		builder.create().show();
 534	}
 535
 536	private void showAskForPresenceDialog(final Contact contact) {
 537		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 538		builder.setTitle(contact.getJid().toString());
 539		builder.setMessage(R.string.request_presence_updates);
 540		builder.setNegativeButton(R.string.cancel, null);
 541		builder.setPositiveButton(R.string.request_now,
 542				new DialogInterface.OnClickListener() {
 543
 544					@Override
 545					public void onClick(DialogInterface dialog, int which) {
 546						if (xmppConnectionServiceBound) {
 547							xmppConnectionService.sendPresencePacket(contact
 548									.getAccount(), xmppConnectionService
 549									.getPresenceGenerator()
 550									.requestPresenceUpdatesFrom(contact));
 551						}
 552					}
 553				});
 554		builder.create().show();
 555	}
 556
 557	private void warnMutalPresenceSubscription(final Conversation conversation,
 558			final OnPresenceSelected listener) {
 559		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 560		builder.setTitle(conversation.getContact().getJid().toString());
 561		builder.setMessage(R.string.without_mutual_presence_updates);
 562		builder.setNegativeButton(R.string.cancel, null);
 563		builder.setPositiveButton(R.string.ignore, new OnClickListener() {
 564
 565			@Override
 566			public void onClick(DialogInterface dialog, int which) {
 567				conversation.setNextCounterpart(null);
 568				if (listener != null) {
 569					listener.onPresenceSelected();
 570				}
 571			}
 572		});
 573		builder.create().show();
 574	}
 575
 576	protected void quickEdit(String previousValue, OnValueEdited callback) {
 577		quickEdit(previousValue, callback, false);
 578	}
 579
 580	protected void quickPasswordEdit(String previousValue,
 581			OnValueEdited callback) {
 582		quickEdit(previousValue, callback, true);
 583	}
 584
 585	@SuppressLint("InflateParams")
 586	private void quickEdit(final String previousValue,
 587			final OnValueEdited callback, boolean password) {
 588		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 589		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
 590		final EditText editor = (EditText) view.findViewById(R.id.editor);
 591		OnClickListener mClickListener = new OnClickListener() {
 592
 593			@Override
 594			public void onClick(DialogInterface dialog, int which) {
 595				String value = editor.getText().toString();
 596				if (!previousValue.equals(value) && value.trim().length() > 0) {
 597					callback.onValueEdited(value);
 598				}
 599			}
 600		};
 601		if (password) {
 602			editor.setInputType(InputType.TYPE_CLASS_TEXT
 603					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
 604			editor.setHint(R.string.password);
 605			builder.setPositiveButton(R.string.accept, mClickListener);
 606		} else {
 607			builder.setPositiveButton(R.string.edit, mClickListener);
 608		}
 609		editor.requestFocus();
 610		editor.setText(previousValue);
 611		builder.setView(view);
 612		builder.setNegativeButton(R.string.cancel, null);
 613		builder.create().show();
 614	}
 615
 616	protected boolean addFingerprintRow(LinearLayout keys, final Account account, IdentityKey identityKey, boolean highlight) {
 617		final String fingerprint = identityKey.getFingerprint().replaceAll("\\s", "");
 618		final SQLiteAxolotlStore.Trust trust = account.getAxolotlService()
 619				.getFingerprintTrust(fingerprint);
 620		return addFingerprintRowWithListeners(keys, account, identityKey, highlight, trust, true,
 621				new CompoundButton.OnCheckedChangeListener() {
 622					@Override
 623					public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 624						if (isChecked != (trust == SQLiteAxolotlStore.Trust.TRUSTED)) {
 625							account.getAxolotlService().setFingerprintTrust(fingerprint,
 626									(isChecked) ? SQLiteAxolotlStore.Trust.TRUSTED :
 627											SQLiteAxolotlStore.Trust.UNTRUSTED);
 628						}
 629					}
 630				},
 631				new View.OnClickListener() {
 632					@Override
 633					public void onClick(View v) {
 634						account.getAxolotlService().setFingerprintTrust(fingerprint,
 635								SQLiteAxolotlStore.Trust.UNTRUSTED);
 636						v.setEnabled(true);
 637					}
 638				}
 639
 640		);
 641	}
 642
 643	protected boolean addFingerprintRowWithListeners(LinearLayout keys, final Account account,
 644	                                                 final IdentityKey identityKey,
 645	                                                 boolean highlight,
 646	                                                 SQLiteAxolotlStore.Trust trust,
 647	                                                 boolean showTag,
 648	                                                 CompoundButton.OnCheckedChangeListener
 649			                                                 onCheckedChangeListener,
 650	                                                 View.OnClickListener onClickListener) {
 651		if (trust == SQLiteAxolotlStore.Trust.COMPROMISED) {
 652			return false;
 653		}
 654		View view = getLayoutInflater().inflate(R.layout.contact_key, keys, false);
 655		TextView key = (TextView) view.findViewById(R.id.key);
 656		TextView keyType = (TextView) view.findViewById(R.id.key_type);
 657		Switch trustToggle = (Switch) view.findViewById(R.id.tgl_trust);
 658		trustToggle.setVisibility(View.VISIBLE);
 659		trustToggle.setOnCheckedChangeListener(onCheckedChangeListener);
 660		trustToggle.setOnClickListener(onClickListener);
 661		view.setOnLongClickListener(new View.OnLongClickListener() {
 662			@Override
 663			public boolean onLongClick(View v) {
 664				showPurgeKeyDialog(account, identityKey);
 665				return true;
 666			}
 667		});
 668
 669		switch (trust) {
 670			case UNTRUSTED:
 671			case TRUSTED:
 672				trustToggle.setChecked(trust == SQLiteAxolotlStore.Trust.TRUSTED, false);
 673				trustToggle.setEnabled(true);
 674				key.setTextColor(getPrimaryTextColor());
 675				keyType.setTextColor(getSecondaryTextColor());
 676				break;
 677			case UNDECIDED:
 678				trustToggle.setChecked(false, false);
 679				trustToggle.setEnabled(false);
 680				key.setTextColor(getPrimaryTextColor());
 681				keyType.setTextColor(getSecondaryTextColor());
 682				break;
 683			case INACTIVE:
 684				trustToggle.setOnClickListener(null);
 685				trustToggle.setChecked(true, false);
 686				trustToggle.setEnabled(false);
 687				key.setTextColor(getTertiaryTextColor());
 688				keyType.setTextColor(getTertiaryTextColor());
 689				break;
 690		}
 691
 692		if (showTag) {
 693			keyType.setText(getString(R.string.axolotl_fingerprint));
 694		} else {
 695			keyType.setVisibility(View.GONE);
 696		}
 697		if (highlight) {
 698			keyType.setTextColor(getResources().getColor(R.color.accent));
 699			keyType.setText(getString(R.string.axolotl_fingerprint_selected_message));
 700		} else {
 701			keyType.setText(getString(R.string.axolotl_fingerprint));
 702		}
 703
 704		key.setText(CryptoHelper.prettifyFingerprint(identityKey.getFingerprint()));
 705		keys.addView(view);
 706		return true;
 707	}
 708
 709	public void showPurgeKeyDialog(final Account account, final IdentityKey identityKey) {
 710		Builder builder = new Builder(this);
 711		builder.setTitle(getString(R.string.purge_key));
 712		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 713		builder.setMessage(getString(R.string.purge_key_desc_part1)
 714				+ "\n\n" + CryptoHelper.prettifyFingerprint(identityKey.getFingerprint())
 715				+ "\n\n" + getString(R.string.purge_key_desc_part2));
 716		builder.setNegativeButton(getString(R.string.cancel), null);
 717		builder.setPositiveButton(getString(R.string.accept),
 718				new DialogInterface.OnClickListener() {
 719					@Override
 720					public void onClick(DialogInterface dialog, int which) {
 721						account.getAxolotlService().purgeKey(identityKey);
 722						refreshUi();
 723					}
 724				});
 725		builder.create().show();
 726	}
 727
 728	public void selectPresence(final Conversation conversation,
 729			final OnPresenceSelected listener) {
 730		final Contact contact = conversation.getContact();
 731		if (conversation.hasValidOtrSession()) {
 732			SessionID id = conversation.getOtrSession().getSessionID();
 733			Jid jid;
 734			try {
 735				jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
 736			} catch (InvalidJidException e) {
 737				jid = null;
 738			}
 739			conversation.setNextCounterpart(jid);
 740			listener.onPresenceSelected();
 741		} else 	if (!contact.showInRoster()) {
 742			showAddToRosterDialog(conversation);
 743		} else {
 744			Presences presences = contact.getPresences();
 745			if (presences.size() == 0) {
 746				if (!contact.getOption(Contact.Options.TO)
 747						&& !contact.getOption(Contact.Options.ASKING)
 748						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
 749					showAskForPresenceDialog(contact);
 750				} else if (!contact.getOption(Contact.Options.TO)
 751						|| !contact.getOption(Contact.Options.FROM)) {
 752					warnMutalPresenceSubscription(conversation, listener);
 753				} else {
 754					conversation.setNextCounterpart(null);
 755					listener.onPresenceSelected();
 756				}
 757			} else if (presences.size() == 1) {
 758				String presence = presences.asStringArray()[0];
 759				try {
 760					conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence));
 761				} catch (InvalidJidException e) {
 762					conversation.setNextCounterpart(null);
 763				}
 764				listener.onPresenceSelected();
 765			} else {
 766				final StringBuilder presence = new StringBuilder();
 767				AlertDialog.Builder builder = new AlertDialog.Builder(this);
 768				builder.setTitle(getString(R.string.choose_presence));
 769				final String[] presencesArray = presences.asStringArray();
 770				int preselectedPresence = 0;
 771				for (int i = 0; i < presencesArray.length; ++i) {
 772					if (presencesArray[i].equals(contact.lastseen.presence)) {
 773						preselectedPresence = i;
 774						break;
 775					}
 776				}
 777				presence.append(presencesArray[preselectedPresence]);
 778				builder.setSingleChoiceItems(presencesArray,
 779						preselectedPresence,
 780						new DialogInterface.OnClickListener() {
 781
 782							@Override
 783							public void onClick(DialogInterface dialog,
 784									int which) {
 785								presence.delete(0, presence.length());
 786								presence.append(presencesArray[which]);
 787							}
 788						});
 789				builder.setNegativeButton(R.string.cancel, null);
 790				builder.setPositiveButton(R.string.ok, new OnClickListener() {
 791
 792					@Override
 793					public void onClick(DialogInterface dialog, int which) {
 794						try {
 795							conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence.toString()));
 796						} catch (InvalidJidException e) {
 797							conversation.setNextCounterpart(null);
 798						}
 799						listener.onPresenceSelected();
 800					}
 801				});
 802				builder.create().show();
 803			}
 804		}
 805	}
 806
 807	protected void onActivityResult(int requestCode, int resultCode,
 808			final Intent data) {
 809		super.onActivityResult(requestCode, resultCode, data);
 810		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 811			mPendingConferenceInvite = ConferenceInvite.parse(data);
 812			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 813				mPendingConferenceInvite.execute(this);
 814				mPendingConferenceInvite = null;
 815			}
 816		}
 817	}
 818
 819	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 820		@Override
 821		public void success(final Conversation conversation) {
 822			switchToConversation(conversation);
 823			runOnUiThread(new Runnable() {
 824				@Override
 825				public void run() {
 826					Toast.makeText(XmppActivity.this,R.string.conference_created,Toast.LENGTH_LONG).show();
 827				}
 828			});
 829		}
 830
 831		@Override
 832		public void error(final int errorCode, Conversation object) {
 833			runOnUiThread(new Runnable() {
 834				@Override
 835				public void run() {
 836					Toast.makeText(XmppActivity.this,errorCode,Toast.LENGTH_LONG).show();
 837				}
 838			});
 839		}
 840
 841		@Override
 842		public void userInputRequried(PendingIntent pi, Conversation object) {
 843
 844		}
 845	};
 846
 847	public int getTertiaryTextColor() {
 848		return this.mTertiaryTextColor;
 849	}
 850
 851	public int getSecondaryTextColor() {
 852		return this.mSecondaryTextColor;
 853	}
 854
 855	public int getPrimaryTextColor() {
 856		return this.mPrimaryTextColor;
 857	}
 858
 859	public int getWarningTextColor() {
 860		return this.mColorRed;
 861	}
 862
 863	public int getOnlineColor() {
 864		return this.mColorGreen;
 865	}
 866
 867	public int getPrimaryBackgroundColor() {
 868		return this.mPrimaryBackgroundColor;
 869	}
 870
 871	public int getSecondaryBackgroundColor() {
 872		return this.mSecondaryBackgroundColor;
 873	}
 874
 875	public int getPixel(int dp) {
 876		DisplayMetrics metrics = getResources().getDisplayMetrics();
 877		return ((int) (dp * metrics.density));
 878	}
 879
 880	public boolean copyTextToClipboard(String text, int labelResId) {
 881		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 882		String label = getResources().getString(labelResId);
 883		if (mClipBoardManager != null) {
 884			ClipData mClipData = ClipData.newPlainText(label, text);
 885			mClipBoardManager.setPrimaryClip(mClipData);
 886			return true;
 887		}
 888		return false;
 889	}
 890
 891	protected void registerNdefPushMessageCallback() {
 892		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
 893		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
 894			nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() {
 895				@Override
 896				public NdefMessage createNdefMessage(NfcEvent nfcEvent) {
 897					return new NdefMessage(new NdefRecord[]{
 898						NdefRecord.createUri(getShareableUri()),
 899							NdefRecord.createApplicationRecord("eu.siacs.conversations")
 900					});
 901				}
 902			}, this);
 903		}
 904	}
 905
 906	protected void unregisterNdefPushMessageCallback() {
 907		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
 908		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
 909			nfcAdapter.setNdefPushMessageCallback(null,this);
 910		}
 911	}
 912
 913	protected String getShareableUri() {
 914		return null;
 915	}
 916
 917	@Override
 918	public void onResume() {
 919		super.onResume();
 920		if (this.getShareableUri()!=null) {
 921			this.registerNdefPushMessageCallback();
 922		}
 923	}
 924
 925	protected int findTheme() {
 926		if (getPreferences().getBoolean("use_larger_font", false)) {
 927			return R.style.ConversationsTheme_LargerText;
 928		} else {
 929			return R.style.ConversationsTheme;
 930		}
 931	}
 932
 933	@Override
 934	public void onPause() {
 935		super.onPause();
 936		this.unregisterNdefPushMessageCallback();
 937	}
 938
 939	protected void showQrCode() {
 940		String uri = getShareableUri();
 941		if (uri!=null) {
 942			Point size = new Point();
 943			getWindowManager().getDefaultDisplay().getSize(size);
 944			final int width = (size.x < size.y ? size.x : size.y);
 945			Bitmap bitmap = createQrCodeBitmap(uri, width);
 946			ImageView view = new ImageView(this);
 947			view.setImageBitmap(bitmap);
 948			AlertDialog.Builder builder = new AlertDialog.Builder(this);
 949			builder.setView(view);
 950			builder.create().show();
 951		}
 952	}
 953
 954	protected Bitmap createQrCodeBitmap(String input, int size) {
 955		Log.d(Config.LOGTAG,"qr code requested size: "+size);
 956		try {
 957			final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter();
 958			final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
 959			hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
 960			final BitMatrix result = QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
 961			final int width = result.getWidth();
 962			final int height = result.getHeight();
 963			final int[] pixels = new int[width * height];
 964			for (int y = 0; y < height; y++) {
 965				final int offset = y * width;
 966				for (int x = 0; x < width; x++) {
 967					pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
 968				}
 969			}
 970			final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
 971			Log.d(Config.LOGTAG,"output size: "+width+"x"+height);
 972			bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
 973			return bitmap;
 974		} catch (final WriterException e) {
 975			return null;
 976		}
 977	}
 978
 979	public static class ConferenceInvite {
 980		private String uuid;
 981		private List<Jid> jids = new ArrayList<>();
 982
 983		public static ConferenceInvite parse(Intent data) {
 984			ConferenceInvite invite = new ConferenceInvite();
 985			invite.uuid = data.getStringExtra("conversation");
 986			if (invite.uuid == null) {
 987				return null;
 988			}
 989			try {
 990				if (data.getBooleanExtra("multiple", false)) {
 991					String[] toAdd = data.getStringArrayExtra("contacts");
 992					for (String item : toAdd) {
 993						invite.jids.add(Jid.fromString(item));
 994					}
 995				} else {
 996					invite.jids.add(Jid.fromString(data.getStringExtra("contact")));
 997				}
 998			} catch (final InvalidJidException ignored) {
 999				return null;
1000			}
1001			return invite;
1002		}
1003
1004		public void execute(XmppActivity activity) {
1005			XmppConnectionService service = activity.xmppConnectionService;
1006			Conversation conversation = service.findConversationByUuid(this.uuid);
1007			if (conversation == null) {
1008				return;
1009			}
1010			if (conversation.getMode() == Conversation.MODE_MULTI) {
1011				for (Jid jid : jids) {
1012					service.invite(conversation, jid);
1013				}
1014			} else {
1015				jids.add(conversation.getJid().toBareJid());
1016				service.createAdhocConference(conversation.getAccount(), jids, activity.adhocCallback);
1017			}
1018		}
1019	}
1020
1021	public AvatarService avatarService() {
1022		return xmppConnectionService.getAvatarService();
1023	}
1024
1025	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1026		private final WeakReference<ImageView> imageViewReference;
1027		private Message message = null;
1028
1029		public BitmapWorkerTask(ImageView imageView) {
1030			imageViewReference = new WeakReference<>(imageView);
1031		}
1032
1033		@Override
1034		protected Bitmap doInBackground(Message... params) {
1035			message = params[0];
1036			try {
1037				return xmppConnectionService.getFileBackend().getThumbnail(
1038						message, (int) (metrics.density * 288), false);
1039			} catch (FileNotFoundException e) {
1040				return null;
1041			}
1042		}
1043
1044		@Override
1045		protected void onPostExecute(Bitmap bitmap) {
1046			if (bitmap != null) {
1047				final ImageView imageView = imageViewReference.get();
1048				if (imageView != null) {
1049					imageView.setImageBitmap(bitmap);
1050					imageView.setBackgroundColor(0x00000000);
1051				}
1052			}
1053		}
1054	}
1055
1056	public void loadBitmap(Message message, ImageView imageView) {
1057		Bitmap bm;
1058		try {
1059			bm = xmppConnectionService.getFileBackend().getThumbnail(message,
1060					(int) (metrics.density * 288), true);
1061		} catch (FileNotFoundException e) {
1062			bm = null;
1063		}
1064		if (bm != null) {
1065			imageView.setImageBitmap(bm);
1066			imageView.setBackgroundColor(0x00000000);
1067		} else {
1068			if (cancelPotentialWork(message, imageView)) {
1069				imageView.setBackgroundColor(0xff333333);
1070				final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
1071				final AsyncDrawable asyncDrawable = new AsyncDrawable(
1072						getResources(), null, task);
1073				imageView.setImageDrawable(asyncDrawable);
1074				try {
1075					task.execute(message);
1076				} catch (final RejectedExecutionException ignored) {
1077				}
1078			}
1079		}
1080	}
1081
1082	public static boolean cancelPotentialWork(Message message,
1083			ImageView imageView) {
1084		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
1085
1086		if (bitmapWorkerTask != null) {
1087			final Message oldMessage = bitmapWorkerTask.message;
1088			if (oldMessage == null || message != oldMessage) {
1089				bitmapWorkerTask.cancel(true);
1090			} else {
1091				return false;
1092			}
1093		}
1094		return true;
1095	}
1096
1097	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
1098		if (imageView != null) {
1099			final Drawable drawable = imageView.getDrawable();
1100			if (drawable instanceof AsyncDrawable) {
1101				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
1102				return asyncDrawable.getBitmapWorkerTask();
1103			}
1104		}
1105		return null;
1106	}
1107
1108	static class AsyncDrawable extends BitmapDrawable {
1109		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1110
1111		public AsyncDrawable(Resources res, Bitmap bitmap,
1112				BitmapWorkerTask bitmapWorkerTask) {
1113			super(res, bitmap);
1114			bitmapWorkerTaskReference = new WeakReference<>(
1115					bitmapWorkerTask);
1116		}
1117
1118		public BitmapWorkerTask getBitmapWorkerTask() {
1119			return bitmapWorkerTaskReference.get();
1120		}
1121	}
1122}