1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.annotation.TargetApi;
   6import android.app.ActionBar;
   7import android.app.Activity;
   8import android.app.AlertDialog;
   9import android.app.AlertDialog.Builder;
  10import android.app.PendingIntent;
  11import android.content.ActivityNotFoundException;
  12import android.content.ClipData;
  13import android.content.ClipboardManager;
  14import android.content.ComponentName;
  15import android.content.Context;
  16import android.content.DialogInterface;
  17import android.content.Intent;
  18import android.content.IntentSender.SendIntentException;
  19import android.content.ServiceConnection;
  20import android.content.SharedPreferences;
  21import android.content.pm.PackageManager;
  22import android.content.pm.ResolveInfo;
  23import android.content.res.Resources;
  24import android.content.res.TypedArray;
  25import android.graphics.Bitmap;
  26import android.graphics.Color;
  27import android.graphics.Point;
  28import android.graphics.drawable.BitmapDrawable;
  29import android.graphics.drawable.Drawable;
  30import android.net.ConnectivityManager;
  31import android.net.Uri;
  32import android.os.AsyncTask;
  33import android.os.Build;
  34import android.os.Bundle;
  35import android.os.Handler;
  36import android.os.IBinder;
  37import android.os.PowerManager;
  38import android.os.SystemClock;
  39import android.preference.PreferenceManager;
  40import android.support.v4.content.ContextCompat;
  41import android.text.InputType;
  42import android.util.DisplayMetrics;
  43import android.util.Pair;
  44import android.view.MenuItem;
  45import android.view.View;
  46import android.view.inputmethod.InputMethodManager;
  47import android.widget.EditText;
  48import android.widget.ImageView;
  49import android.widget.Toast;
  50
  51import net.java.otr4j.session.SessionID;
  52
  53import java.io.FileNotFoundException;
  54import java.lang.ref.WeakReference;
  55import java.util.ArrayList;
  56import java.util.Collections;
  57import java.util.List;
  58import java.util.Map;
  59import java.util.concurrent.RejectedExecutionException;
  60import java.util.concurrent.atomic.AtomicInteger;
  61
  62import eu.siacs.conversations.Config;
  63import eu.siacs.conversations.R;
  64import eu.siacs.conversations.crypto.PgpEngine;
  65import eu.siacs.conversations.entities.Account;
  66import eu.siacs.conversations.entities.Contact;
  67import eu.siacs.conversations.entities.Conversation;
  68import eu.siacs.conversations.entities.Message;
  69import eu.siacs.conversations.entities.MucOptions;
  70import eu.siacs.conversations.entities.Presences;
  71import eu.siacs.conversations.services.AvatarService;
  72import eu.siacs.conversations.services.BarcodeProvider;
  73import eu.siacs.conversations.services.XmppConnectionService;
  74import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  75import eu.siacs.conversations.utils.CryptoHelper;
  76import eu.siacs.conversations.utils.ExceptionHelper;
  77import eu.siacs.conversations.utils.UIHelper;
  78import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  79import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  80import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  81import eu.siacs.conversations.xmpp.jid.Jid;
  82
  83public abstract class XmppActivity extends Activity {
  84
  85	public static final String EXTRA_ACCOUNT = "account";
  86	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
  87	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
  88	protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
  89	protected static final int REQUEST_BATTERY_OP = 0x13849ff;
  90	public XmppConnectionService xmppConnectionService;
  91	public boolean xmppConnectionServiceBound = false;
  92	protected boolean registeredListeners = false;
  93
  94	protected int mPrimaryTextColor;
  95	protected int mSecondaryTextColor;
  96	protected int mTertiaryTextColor;
  97	protected int mPrimaryBackgroundColor;
  98	protected int mSecondaryBackgroundColor;
  99	protected int mColorRed;
 100	protected int mColorOrange;
 101	protected int mColorGreen;
 102	protected int mPrimaryColor;
 103
 104	protected boolean mUseSubject = true;
 105	protected int mTheme;
 106	protected boolean mUsingEnterKey = false;
 107	protected Toast mToast;
 108	protected Runnable onOpenPGPKeyPublished = () -> Toast.makeText(XmppActivity.this, R.string.openpgp_has_been_published, Toast.LENGTH_SHORT).show();
 109	protected ConferenceInvite mPendingConferenceInvite = null;
 110	protected ServiceConnection mConnection = new ServiceConnection() {
 111
 112		@Override
 113		public void onServiceConnected(ComponentName className, IBinder service) {
 114			XmppConnectionBinder binder = (XmppConnectionBinder) service;
 115			xmppConnectionService = binder.getService();
 116			xmppConnectionServiceBound = true;
 117			if (!registeredListeners && shouldRegisterListeners()) {
 118				registerListeners();
 119				registeredListeners = true;
 120			}
 121			onBackendConnected();
 122		}
 123
 124		@Override
 125		public void onServiceDisconnected(ComponentName arg0) {
 126			xmppConnectionServiceBound = false;
 127		}
 128	};
 129	private DisplayMetrics metrics;
 130	private long mLastUiRefresh = 0;
 131	private Handler mRefreshUiHandler = new Handler();
 132	private Runnable mRefreshUiRunnable = () -> {
 133		mLastUiRefresh = SystemClock.elapsedRealtime();
 134		refreshUiReal();
 135	};
 136	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 137		@Override
 138		public void success(final Conversation conversation) {
 139			runOnUiThread(() -> {
 140				switchToConversation(conversation);
 141				hideToast();
 142			});
 143		}
 144
 145		@Override
 146		public void error(final int errorCode, Conversation object) {
 147			runOnUiThread(() -> replaceToast(getString(errorCode)));
 148		}
 149
 150		@Override
 151		public void userInputRequried(PendingIntent pi, Conversation object) {
 152
 153		}
 154	};
 155
 156	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 157		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 158
 159		if (bitmapWorkerTask != null) {
 160			final Message oldMessage = bitmapWorkerTask.message;
 161			if (oldMessage == null || message != oldMessage) {
 162				bitmapWorkerTask.cancel(true);
 163			} else {
 164				return false;
 165			}
 166		}
 167		return true;
 168	}
 169
 170	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 171		if (imageView != null) {
 172			final Drawable drawable = imageView.getDrawable();
 173			if (drawable instanceof AsyncDrawable) {
 174				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 175				return asyncDrawable.getBitmapWorkerTask();
 176			}
 177		}
 178		return null;
 179	}
 180
 181	protected void hideToast() {
 182		if (mToast != null) {
 183			mToast.cancel();
 184		}
 185	}
 186
 187	protected void replaceToast(String msg) {
 188		replaceToast(msg, true);
 189	}
 190
 191	protected void replaceToast(String msg, boolean showlong) {
 192		hideToast();
 193		mToast = Toast.makeText(this, msg, showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 194		mToast.show();
 195	}
 196
 197	protected final void refreshUi() {
 198		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 199		if (diff > Config.REFRESH_UI_INTERVAL) {
 200			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 201			runOnUiThread(mRefreshUiRunnable);
 202		} else {
 203			final long next = Config.REFRESH_UI_INTERVAL - diff;
 204			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 205			mRefreshUiHandler.postDelayed(mRefreshUiRunnable, next);
 206		}
 207	}
 208
 209	abstract protected void refreshUiReal();
 210
 211	@Override
 212	protected void onStart() {
 213		super.onStart();
 214		if (!xmppConnectionServiceBound) {
 215			connectToBackend();
 216		} else {
 217			if (!registeredListeners) {
 218				this.registerListeners();
 219				this.registeredListeners = true;
 220			}
 221			this.onBackendConnected();
 222		}
 223	}
 224
 225	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 226	protected boolean shouldRegisterListeners() {
 227		if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
 228			return !isDestroyed() && !isFinishing();
 229		} else {
 230			return !isFinishing();
 231		}
 232	}
 233
 234	public void connectToBackend() {
 235		Intent intent = new Intent(this, XmppConnectionService.class);
 236		intent.setAction("ui");
 237		startService(intent);
 238		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 239	}
 240
 241	@Override
 242	protected void onStop() {
 243		super.onStop();
 244		if (xmppConnectionServiceBound) {
 245			if (registeredListeners) {
 246				this.unregisterListeners();
 247				this.registeredListeners = false;
 248			}
 249			unbindService(mConnection);
 250			xmppConnectionServiceBound = false;
 251		}
 252	}
 253
 254	protected void hideKeyboard() {
 255		final InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 256		View focus = getCurrentFocus();
 257		if (focus != null && inputManager != null) {
 258			inputManager.hideSoftInputFromWindow(focus.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
 259		}
 260	}
 261
 262	public boolean hasPgp() {
 263		return xmppConnectionService.getPgpEngine() != null;
 264	}
 265
 266	public void showInstallPgpDialog() {
 267		Builder builder = new AlertDialog.Builder(this);
 268		builder.setTitle(getString(R.string.openkeychain_required));
 269		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 270		builder.setMessage(getText(R.string.openkeychain_required_long));
 271		builder.setNegativeButton(getString(R.string.cancel), null);
 272		builder.setNeutralButton(getString(R.string.restart),
 273				(dialog, which) -> {
 274					if (xmppConnectionServiceBound) {
 275						unbindService(mConnection);
 276						xmppConnectionServiceBound = false;
 277					}
 278					stopService(new Intent(XmppActivity.this,
 279							XmppConnectionService.class));
 280					finish();
 281				});
 282		builder.setPositiveButton(getString(R.string.install),
 283				(dialog, which) -> {
 284					Uri uri = Uri
 285							.parse("market://details?id=org.sufficientlysecure.keychain");
 286					Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 287							uri);
 288					PackageManager manager = getApplicationContext()
 289							.getPackageManager();
 290					List<ResolveInfo> infos = manager
 291							.queryIntentActivities(marketIntent, 0);
 292					if (infos.size() > 0) {
 293						startActivity(marketIntent);
 294					} else {
 295						uri = Uri.parse("http://www.openkeychain.org/");
 296						Intent browserIntent = new Intent(
 297								Intent.ACTION_VIEW, uri);
 298						startActivity(browserIntent);
 299					}
 300					finish();
 301				});
 302		builder.create().show();
 303	}
 304
 305	abstract void onBackendConnected();
 306
 307	protected void registerListeners() {
 308		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 309			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 310		}
 311		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 312			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 313		}
 314		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 315			this.xmppConnectionService.setOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 316		}
 317		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 318			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 319		}
 320		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 321			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 322		}
 323		if (this instanceof OnUpdateBlocklist) {
 324			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 325		}
 326		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 327			this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 328		}
 329		if (this instanceof OnKeyStatusUpdated) {
 330			this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 331		}
 332	}
 333
 334	protected void unregisterListeners() {
 335		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 336			this.xmppConnectionService.removeOnConversationListChangedListener();
 337		}
 338		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 339			this.xmppConnectionService.removeOnAccountListChangedListener();
 340		}
 341		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 342			this.xmppConnectionService.removeOnCaptchaRequestedListener();
 343		}
 344		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 345			this.xmppConnectionService.removeOnRosterUpdateListener();
 346		}
 347		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 348			this.xmppConnectionService.removeOnMucRosterUpdateListener();
 349		}
 350		if (this instanceof OnUpdateBlocklist) {
 351			this.xmppConnectionService.removeOnUpdateBlocklistListener();
 352		}
 353		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 354			this.xmppConnectionService.removeOnShowErrorToastListener();
 355		}
 356		if (this instanceof OnKeyStatusUpdated) {
 357			this.xmppConnectionService.removeOnNewKeysAvailableListener();
 358		}
 359	}
 360
 361	@Override
 362	public boolean onOptionsItemSelected(final MenuItem item) {
 363		switch (item.getItemId()) {
 364			case R.id.action_settings:
 365				startActivity(new Intent(this, SettingsActivity.class));
 366				break;
 367			case R.id.action_accounts:
 368				startActivity(new Intent(this, ManageAccountActivity.class));
 369				break;
 370			case android.R.id.home:
 371				finish();
 372				break;
 373			case R.id.action_show_qr_code:
 374				showQrCode();
 375				break;
 376		}
 377		return super.onOptionsItemSelected(item);
 378	}
 379
 380	@Override
 381	protected void onCreate(Bundle savedInstanceState) {
 382		super.onCreate(savedInstanceState);
 383		metrics = getResources().getDisplayMetrics();
 384		ExceptionHelper.init(getApplicationContext());
 385
 386		mPrimaryTextColor = ContextCompat.getColor(this, R.color.black87);
 387		mSecondaryTextColor = ContextCompat.getColor(this, R.color.black54);
 388		mTertiaryTextColor = ContextCompat.getColor(this, R.color.black12);
 389		mColorRed = ContextCompat.getColor(this, R.color.red800);
 390		mColorOrange = ContextCompat.getColor(this, R.color.orange500);
 391		mColorGreen = ContextCompat.getColor(this, R.color.green500);
 392		mPrimaryColor = ContextCompat.getColor(this, R.color.primary500);
 393		mPrimaryBackgroundColor = ContextCompat.getColor(this, R.color.grey50);
 394		mSecondaryBackgroundColor = ContextCompat.getColor(this, R.color.grey200);
 395
 396		this.mTheme = findTheme();
 397		if (isDarkTheme()) {
 398			mPrimaryTextColor = ContextCompat.getColor(this, R.color.white);
 399			mSecondaryTextColor = ContextCompat.getColor(this, R.color.white70);
 400			mTertiaryTextColor = ContextCompat.getColor(this, R.color.white12);
 401			mPrimaryBackgroundColor = ContextCompat.getColor(this, R.color.grey800);
 402			mSecondaryBackgroundColor = ContextCompat.getColor(this, R.color.grey900);
 403		}
 404		setTheme(this.mTheme);
 405
 406		this.mUsingEnterKey = usingEnterKey();
 407		mUseSubject = getPreferences().getBoolean("use_subject", getResources().getBoolean(R.bool.use_subject));
 408		final ActionBar ab = getActionBar();
 409		if (ab != null) {
 410			ab.setDisplayHomeAsUpEnabled(true);
 411		}
 412	}
 413
 414	public boolean isDarkTheme() {
 415		return this.mTheme == R.style.ConversationsTheme_Dark || this.mTheme == R.style.ConversationsTheme_Dark_LargerText;
 416	}
 417
 418	public int getThemeResource(int r_attr_name, int r_drawable_def) {
 419		int[] attrs = {r_attr_name};
 420		TypedArray ta = this.getTheme().obtainStyledAttributes(attrs);
 421
 422		int res = ta.getResourceId(0, r_drawable_def);
 423		ta.recycle();
 424
 425		return res;
 426	}
 427
 428	protected boolean isOptimizingBattery() {
 429		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 430			final PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 431			return pm != null
 432					&& !pm.isIgnoringBatteryOptimizations(getPackageName());
 433		} else {
 434			return false;
 435		}
 436	}
 437
 438	protected boolean isAffectedByDataSaver() {
 439		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 440			final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 441			return cm != null
 442					&& cm.isActiveNetworkMetered()
 443					&& cm.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 444		} else {
 445			return false;
 446		}
 447	}
 448
 449	protected boolean usingEnterKey() {
 450		return getPreferences().getBoolean("display_enter_key", getResources().getBoolean(R.bool.display_enter_key));
 451	}
 452
 453	protected SharedPreferences getPreferences() {
 454		return PreferenceManager
 455				.getDefaultSharedPreferences(getApplicationContext());
 456	}
 457
 458	public boolean useSubjectToIdentifyConference() {
 459		return mUseSubject;
 460	}
 461
 462	public void switchToConversation(Conversation conversation) {
 463		switchToConversation(conversation, null, false);
 464	}
 465
 466	public void switchToConversation(Conversation conversation, String text,
 467	                                 boolean newTask) {
 468		switchToConversation(conversation, text, null, false, newTask);
 469	}
 470
 471	public void highlightInMuc(Conversation conversation, String nick) {
 472		switchToConversation(conversation, null, nick, false, false);
 473	}
 474
 475	public void privateMsgInMuc(Conversation conversation, String nick) {
 476		switchToConversation(conversation, null, nick, true, false);
 477	}
 478
 479	private void switchToConversation(Conversation conversation, String text, String nick, boolean pm, boolean newTask) {
 480		Intent viewConversationIntent = new Intent(this,
 481				ConversationActivity.class);
 482		viewConversationIntent.setAction(ConversationActivity.ACTION_VIEW_CONVERSATION);
 483		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
 484				conversation.getUuid());
 485		if (text != null) {
 486			viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
 487		}
 488		if (nick != null) {
 489			viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
 490			viewConversationIntent.putExtra(ConversationActivity.PRIVATE_MESSAGE, pm);
 491		}
 492		if (newTask) {
 493			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 494					| Intent.FLAG_ACTIVITY_NEW_TASK
 495					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
 496		} else {
 497			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 498					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
 499		}
 500		startActivity(viewConversationIntent);
 501		finish();
 502	}
 503
 504	public void switchToContactDetails(Contact contact) {
 505		switchToContactDetails(contact, null);
 506	}
 507
 508	public void switchToContactDetails(Contact contact, String messageFingerprint) {
 509		Intent intent = new Intent(this, ContactDetailsActivity.class);
 510		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 511		intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().toBareJid().toString());
 512		intent.putExtra("contact", contact.getJid().toString());
 513		intent.putExtra("fingerprint", messageFingerprint);
 514		startActivity(intent);
 515	}
 516
 517	public void switchToAccount(Account account) {
 518		switchToAccount(account, false);
 519	}
 520
 521	public void switchToAccount(Account account, boolean init) {
 522		Intent intent = new Intent(this, EditAccountActivity.class);
 523		intent.putExtra("jid", account.getJid().toBareJid().toString());
 524		intent.putExtra("init", init);
 525		if (init) {
 526			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
 527		}
 528		startActivity(intent);
 529		overridePendingTransition(0,0);
 530	}
 531
 532	protected void delegateUriPermissionsToService(Uri uri) {
 533		Intent intent = new Intent(this,XmppConnectionService.class);
 534		intent.setAction(Intent.ACTION_SEND);
 535		intent.setData(uri);
 536		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 537		startService(intent);
 538	}
 539
 540	protected void inviteToConversation(Conversation conversation) {
 541		Intent intent = new Intent(getApplicationContext(),
 542				ChooseContactActivity.class);
 543		List<String> contacts = new ArrayList<>();
 544		if (conversation.getMode() == Conversation.MODE_MULTI) {
 545			for (MucOptions.User user : conversation.getMucOptions().getUsers(false)) {
 546				Jid jid = user.getRealJid();
 547				if (jid != null) {
 548					contacts.add(jid.toBareJid().toString());
 549				}
 550			}
 551		} else {
 552			contacts.add(conversation.getJid().toBareJid().toString());
 553		}
 554		intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()]));
 555		intent.putExtra("conversation", conversation.getUuid());
 556		intent.putExtra("multiple", true);
 557		intent.putExtra("show_enter_jid", true);
 558		intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 559		startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
 560	}
 561
 562	protected void announcePgp(Account account, final Conversation conversation, Intent intent, final Runnable onSuccess) {
 563		if (account.getPgpId() == 0) {
 564			choosePgpSignId(account);
 565		} else {
 566			String status = null;
 567			if (manuallyChangePresence()) {
 568				status = account.getPresenceStatusMessage();
 569			}
 570			if (status == null) {
 571				status = "";
 572			}
 573			xmppConnectionService.getPgpEngine().generateSignature(intent, account, status, new UiCallback<Account>() {
 574
 575				@Override
 576				public void userInputRequried(PendingIntent pi, Account account) {
 577					try {
 578						startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 579					} catch (final SendIntentException ignored) {
 580					}
 581				}
 582
 583				@Override
 584				public void success(Account account) {
 585					xmppConnectionService.databaseBackend.updateAccount(account);
 586					xmppConnectionService.sendPresence(account);
 587					if (conversation != null) {
 588						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 589						xmppConnectionService.updateConversation(conversation);
 590						refreshUi();
 591					}
 592					if (onSuccess != null) {
 593						runOnUiThread(onSuccess);
 594					}
 595				}
 596
 597				@Override
 598				public void error(int error, Account account) {
 599					if (error == 0 && account != null) {
 600						account.setPgpSignId(0);
 601						account.unsetPgpSignature();
 602						xmppConnectionService.databaseBackend.updateAccount(account);
 603						choosePgpSignId(account);
 604					} else {
 605						displayErrorDialog(error);
 606					}
 607				}
 608			});
 609		}
 610	}
 611
 612	protected boolean noAccountUsesPgp() {
 613		if (!hasPgp()) {
 614			return true;
 615		}
 616		for (Account account : xmppConnectionService.getAccounts()) {
 617			if (account.getPgpId() != 0) {
 618				return false;
 619			}
 620		}
 621		return true;
 622	}
 623
 624	@SuppressWarnings("deprecation")
 625	@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 626	protected void setListItemBackgroundOnView(View view) {
 627		int sdk = android.os.Build.VERSION.SDK_INT;
 628		if (sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
 629			view.setBackgroundDrawable(getResources().getDrawable(R.drawable.greybackground));
 630		} else {
 631			view.setBackground(getResources().getDrawable(R.drawable.greybackground));
 632		}
 633	}
 634
 635	protected void choosePgpSignId(Account account) {
 636		xmppConnectionService.getPgpEngine().chooseKey(account, new UiCallback<Account>() {
 637			@Override
 638			public void success(Account account1) {
 639			}
 640
 641			@Override
 642			public void error(int errorCode, Account object) {
 643
 644			}
 645
 646			@Override
 647			public void userInputRequried(PendingIntent pi, Account object) {
 648				try {
 649					startIntentSenderForResult(pi.getIntentSender(),
 650							REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);
 651				} catch (final SendIntentException ignored) {
 652				}
 653			}
 654		});
 655	}
 656
 657	protected void displayErrorDialog(final int errorCode) {
 658		runOnUiThread(() -> {
 659			Builder builder = new Builder(XmppActivity.this);
 660			builder.setIconAttribute(android.R.attr.alertDialogIcon);
 661			builder.setTitle(getString(R.string.error));
 662			builder.setMessage(errorCode);
 663			builder.setNeutralButton(R.string.accept, null);
 664			builder.create().show();
 665		});
 666
 667	}
 668
 669	protected void showAddToRosterDialog(final Conversation conversation) {
 670		showAddToRosterDialog(conversation.getContact());
 671	}
 672
 673	protected void showAddToRosterDialog(final Contact contact) {
 674		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 675		builder.setTitle(contact.getJid().toString());
 676		builder.setMessage(getString(R.string.not_in_roster));
 677		builder.setNegativeButton(getString(R.string.cancel), null);
 678		builder.setPositiveButton(getString(R.string.add_contact),
 679				(dialog, which) -> {
 680					final Jid jid = contact.getJid();
 681					Account account = contact.getAccount();
 682					Contact contact1 = account.getRoster().getContact(jid);
 683					xmppConnectionService.createContact(contact1);
 684				});
 685		builder.create().show();
 686	}
 687
 688	private void showAskForPresenceDialog(final Contact contact) {
 689		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 690		builder.setTitle(contact.getJid().toString());
 691		builder.setMessage(R.string.request_presence_updates);
 692		builder.setNegativeButton(R.string.cancel, null);
 693		builder.setPositiveButton(R.string.request_now,
 694				(dialog, which) -> {
 695					if (xmppConnectionServiceBound) {
 696						xmppConnectionService.sendPresencePacket(contact
 697								.getAccount(), xmppConnectionService
 698								.getPresenceGenerator()
 699								.requestPresenceUpdatesFrom(contact));
 700					}
 701				});
 702		builder.create().show();
 703	}
 704
 705	private void warnMutalPresenceSubscription(final Conversation conversation,
 706	                                           final OnPresenceSelected listener) {
 707		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 708		builder.setTitle(conversation.getContact().getJid().toString());
 709		builder.setMessage(R.string.without_mutual_presence_updates);
 710		builder.setNegativeButton(R.string.cancel, null);
 711		builder.setPositiveButton(R.string.ignore, (dialog, which) -> {
 712			conversation.setNextCounterpart(null);
 713			if (listener != null) {
 714				listener.onPresenceSelected();
 715			}
 716		});
 717		builder.create().show();
 718	}
 719
 720	protected void quickEdit(String previousValue, int hint, OnValueEdited callback) {
 721		quickEdit(previousValue, callback, hint, false);
 722	}
 723
 724	protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 725		quickEdit(previousValue, callback, R.string.password, true);
 726	}
 727
 728	@SuppressLint("InflateParams")
 729	private void quickEdit(final String previousValue,
 730	                       final OnValueEdited callback,
 731	                       final int hint,
 732	                       boolean password) {
 733		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 734		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
 735		final EditText editor = view.findViewById(R.id.editor);
 736		if (password) {
 737			editor.setInputType(InputType.TYPE_CLASS_TEXT
 738					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
 739		}
 740		builder.setPositiveButton(R.string.accept, null);
 741		if (hint != 0) {
 742			editor.setHint(hint);
 743		}
 744		editor.requestFocus();
 745		editor.setText("");
 746		if (previousValue != null) {
 747			editor.getText().append(previousValue);
 748		}
 749		builder.setView(view);
 750		builder.setNegativeButton(R.string.cancel, null);
 751		final AlertDialog dialog = builder.create();
 752		dialog.show();
 753		View.OnClickListener clickListener = v -> {
 754			String value = editor.getText().toString();
 755			if (!value.equals(previousValue) && value.trim().length() > 0) {
 756				String error = callback.onValueEdited(value);
 757				if (error != null) {
 758					editor.setError(error);
 759					return;
 760				}
 761			}
 762			dialog.dismiss();
 763		};
 764		dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(clickListener);
 765	}
 766
 767	public boolean hasStoragePermission(int requestCode) {
 768		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 769			if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 770				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 771				return false;
 772			} else {
 773				return true;
 774			}
 775		} else {
 776			return true;
 777		}
 778	}
 779
 780	public void selectPresence(final Conversation conversation,
 781	                           final OnPresenceSelected listener) {
 782		final Contact contact = conversation.getContact();
 783		if (conversation.hasValidOtrSession()) {
 784			SessionID id = conversation.getOtrSession().getSessionID();
 785			Jid jid;
 786			try {
 787				jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
 788			} catch (InvalidJidException e) {
 789				jid = null;
 790			}
 791			conversation.setNextCounterpart(jid);
 792			listener.onPresenceSelected();
 793		} else if (!contact.showInRoster()) {
 794			showAddToRosterDialog(conversation);
 795		} else {
 796			final Presences presences = contact.getPresences();
 797			if (presences.size() == 0) {
 798				if (!contact.getOption(Contact.Options.TO)
 799						&& !contact.getOption(Contact.Options.ASKING)
 800						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
 801					showAskForPresenceDialog(contact);
 802				} else if (!contact.getOption(Contact.Options.TO)
 803						|| !contact.getOption(Contact.Options.FROM)) {
 804					warnMutalPresenceSubscription(conversation, listener);
 805				} else {
 806					conversation.setNextCounterpart(null);
 807					listener.onPresenceSelected();
 808				}
 809			} else if (presences.size() == 1) {
 810				String presence = presences.toResourceArray()[0];
 811				try {
 812					conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 813				} catch (InvalidJidException e) {
 814					conversation.setNextCounterpart(null);
 815				}
 816				listener.onPresenceSelected();
 817			} else {
 818				showPresenceSelectionDialog(presences, conversation, listener);
 819			}
 820		}
 821	}
 822
 823	private void showPresenceSelectionDialog(Presences presences, final Conversation conversation, final OnPresenceSelected listener) {
 824		final Contact contact = conversation.getContact();
 825		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 826		builder.setTitle(getString(R.string.choose_presence));
 827		final String[] resourceArray = presences.toResourceArray();
 828		Pair<Map<String, String>, Map<String, String>> typeAndName = presences.toTypeAndNameMap();
 829		final Map<String, String> resourceTypeMap = typeAndName.first;
 830		final Map<String, String> resourceNameMap = typeAndName.second;
 831		final String[] readableIdentities = new String[resourceArray.length];
 832		final AtomicInteger selectedResource = new AtomicInteger(0);
 833		for (int i = 0; i < resourceArray.length; ++i) {
 834			String resource = resourceArray[i];
 835			if (resource.equals(contact.getLastResource())) {
 836				selectedResource.set(i);
 837			}
 838			String type = resourceTypeMap.get(resource);
 839			String name = resourceNameMap.get(resource);
 840			if (type != null) {
 841				if (Collections.frequency(resourceTypeMap.values(), type) == 1) {
 842					readableIdentities[i] = UIHelper.tranlasteType(this, type);
 843				} else if (name != null) {
 844					if (Collections.frequency(resourceNameMap.values(), name) == 1
 845							|| CryptoHelper.UUID_PATTERN.matcher(resource).matches()) {
 846						readableIdentities[i] = UIHelper.tranlasteType(this, type) + "  (" + name + ")";
 847					} else {
 848						readableIdentities[i] = UIHelper.tranlasteType(this, type) + " (" + name + " / " + resource + ")";
 849					}
 850				} else {
 851					readableIdentities[i] = UIHelper.tranlasteType(this, type) + " (" + resource + ")";
 852				}
 853			} else {
 854				readableIdentities[i] = resource;
 855			}
 856		}
 857		builder.setSingleChoiceItems(readableIdentities,
 858				selectedResource.get(),
 859				(dialog, which) -> selectedResource.set(which));
 860		builder.setNegativeButton(R.string.cancel, null);
 861		builder.setPositiveButton(R.string.ok, (dialog, which) -> {
 862			try {
 863				Jid next = Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), resourceArray[selectedResource.get()]);
 864				conversation.setNextCounterpart(next);
 865			} catch (InvalidJidException e) {
 866				conversation.setNextCounterpart(null);
 867			}
 868			listener.onPresenceSelected();
 869		});
 870		builder.create().show();
 871	}
 872
 873	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 874		super.onActivityResult(requestCode, resultCode, data);
 875		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 876			mPendingConferenceInvite = ConferenceInvite.parse(data);
 877			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 878				if (mPendingConferenceInvite.execute(this)) {
 879					mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 880					mToast.show();
 881				}
 882				mPendingConferenceInvite = null;
 883			}
 884		}
 885	}
 886
 887	public int getTertiaryTextColor() {
 888		return this.mTertiaryTextColor;
 889	}
 890
 891	public int getSecondaryTextColor() {
 892		return this.mSecondaryTextColor;
 893	}
 894
 895	public int getPrimaryTextColor() {
 896		return this.mPrimaryTextColor;
 897	}
 898
 899	public int getWarningTextColor() {
 900		return this.mColorRed;
 901	}
 902
 903	public int getOnlineColor() {
 904		return this.mColorGreen;
 905	}
 906
 907	public int getPrimaryBackgroundColor() {
 908		return this.mPrimaryBackgroundColor;
 909	}
 910
 911	public int getSecondaryBackgroundColor() {
 912		return this.mSecondaryBackgroundColor;
 913	}
 914
 915	public int getPixel(int dp) {
 916		DisplayMetrics metrics = getResources().getDisplayMetrics();
 917		return ((int) (dp * metrics.density));
 918	}
 919
 920	public boolean copyTextToClipboard(String text, int labelResId) {
 921		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 922		String label = getResources().getString(labelResId);
 923		if (mClipBoardManager != null) {
 924			ClipData mClipData = ClipData.newPlainText(label, text);
 925			mClipBoardManager.setPrimaryClip(mClipData);
 926			return true;
 927		}
 928		return false;
 929	}
 930
 931	protected boolean neverCompressPictures() {
 932		return getPreferences().getString("picture_compression", getResources().getString(R.string.picture_compression)).equals("never");
 933	}
 934
 935	protected boolean manuallyChangePresence() {
 936		return getPreferences().getBoolean(SettingsActivity.MANUALLY_CHANGE_PRESENCE, getResources().getBoolean(R.bool.manually_change_presence));
 937	}
 938
 939	protected String getShareableUri() {
 940		return getShareableUri(false);
 941	}
 942
 943	protected String getShareableUri(boolean http) {
 944		return null;
 945	}
 946
 947	protected void shareLink(boolean http) {
 948		String uri = getShareableUri(http);
 949		if (uri == null || uri.isEmpty()) {
 950			return;
 951		}
 952		Intent intent = new Intent(Intent.ACTION_SEND);
 953		intent.setType("text/plain");
 954		intent.putExtra(Intent.EXTRA_TEXT, getShareableUri(http));
 955		try {
 956			startActivity(Intent.createChooser(intent, getText(R.string.share_uri_with)));
 957		} catch (ActivityNotFoundException e) {
 958			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 959		}
 960	}
 961
 962	protected void launchOpenKeyChain(long keyId) {
 963		PgpEngine pgp = XmppActivity.this.xmppConnectionService.getPgpEngine();
 964		try {
 965			startIntentSenderForResult(
 966					pgp.getIntentForKey(keyId).getIntentSender(), 0, null, 0,
 967					0, 0);
 968		} catch (Throwable e) {
 969			Toast.makeText(XmppActivity.this, R.string.openpgp_error, Toast.LENGTH_SHORT).show();
 970		}
 971	}
 972
 973	@Override
 974	public void onResume() {
 975		super.onResume();
 976	}
 977
 978	protected int findTheme() {
 979		Boolean dark = getPreferences().getString(SettingsActivity.THEME, getResources().getString(R.string.theme)).equals("dark");
 980		Boolean larger = getPreferences().getBoolean("use_larger_font", getResources().getBoolean(R.bool.use_larger_font));
 981
 982		if (dark) {
 983			if (larger)
 984				return R.style.ConversationsTheme_Dark_LargerText;
 985			else
 986				return R.style.ConversationsTheme_Dark;
 987		} else {
 988			if (larger)
 989				return R.style.ConversationsTheme_LargerText;
 990			else
 991				return R.style.ConversationsTheme;
 992		}
 993	}
 994
 995	@Override
 996	public void onPause() {
 997		super.onPause();
 998	}
 999
1000	protected void showQrCode() {
1001		final String uri = getShareableUri();
1002		if (uri == null || uri.isEmpty()) {
1003			return;
1004		}
1005		Point size = new Point();
1006		getWindowManager().getDefaultDisplay().getSize(size);
1007		final int width = (size.x < size.y ? size.x : size.y);
1008		Bitmap bitmap = BarcodeProvider.create2dBarcodeBitmap(uri, width);
1009		ImageView view = new ImageView(this);
1010		view.setBackgroundColor(Color.WHITE);
1011		view.setImageBitmap(bitmap);
1012		AlertDialog.Builder builder = new AlertDialog.Builder(this);
1013		builder.setView(view);
1014		builder.create().show();
1015	}
1016
1017	protected Account extractAccount(Intent intent) {
1018		String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
1019		try {
1020			return jid != null ? xmppConnectionService.findAccountByJid(Jid.fromString(jid)) : null;
1021		} catch (InvalidJidException e) {
1022			return null;
1023		}
1024	}
1025
1026	public AvatarService avatarService() {
1027		return xmppConnectionService.getAvatarService();
1028	}
1029
1030	public void loadBitmap(Message message, ImageView imageView) {
1031		Bitmap bm;
1032		try {
1033			bm = xmppConnectionService.getFileBackend().getThumbnail(message, (int) (metrics.density * 288), true);
1034		} catch (FileNotFoundException e) {
1035			bm = null;
1036		}
1037		if (bm != null) {
1038			cancelPotentialWork(message, imageView);
1039			imageView.setImageBitmap(bm);
1040			imageView.setBackgroundColor(0x00000000);
1041		} else {
1042			if (cancelPotentialWork(message, imageView)) {
1043				imageView.setBackgroundColor(0xff333333);
1044				imageView.setImageDrawable(null);
1045				final BitmapWorkerTask task = new BitmapWorkerTask(this, imageView);
1046				final AsyncDrawable asyncDrawable = new AsyncDrawable(
1047						getResources(), null, task);
1048				imageView.setImageDrawable(asyncDrawable);
1049				try {
1050					task.execute(message);
1051				} catch (final RejectedExecutionException ignored) {
1052					ignored.printStackTrace();
1053				}
1054			}
1055		}
1056	}
1057
1058	protected interface OnValueEdited {
1059		String onValueEdited(String value);
1060	}
1061
1062	public interface OnPresenceSelected {
1063		void onPresenceSelected();
1064	}
1065
1066	public static class ConferenceInvite {
1067		private String uuid;
1068		private List<Jid> jids = new ArrayList<>();
1069
1070		public static ConferenceInvite parse(Intent data) {
1071			ConferenceInvite invite = new ConferenceInvite();
1072			invite.uuid = data.getStringExtra("conversation");
1073			if (invite.uuid == null) {
1074				return null;
1075			}
1076			try {
1077				if (data.getBooleanExtra("multiple", false)) {
1078					String[] toAdd = data.getStringArrayExtra("contacts");
1079					for (String item : toAdd) {
1080						invite.jids.add(Jid.fromString(item));
1081					}
1082				} else {
1083					invite.jids.add(Jid.fromString(data.getStringExtra("contact")));
1084				}
1085			} catch (final InvalidJidException ignored) {
1086				return null;
1087			}
1088			return invite;
1089		}
1090
1091		public boolean execute(XmppActivity activity) {
1092			XmppConnectionService service = activity.xmppConnectionService;
1093			Conversation conversation = service.findConversationByUuid(this.uuid);
1094			if (conversation == null) {
1095				return false;
1096			}
1097			if (conversation.getMode() == Conversation.MODE_MULTI) {
1098				for (Jid jid : jids) {
1099					service.invite(conversation, jid);
1100				}
1101				return false;
1102			} else {
1103				jids.add(conversation.getJid().toBareJid());
1104				return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
1105			}
1106		}
1107	}
1108
1109	static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1110		private final WeakReference<ImageView> imageViewReference;
1111		private final WeakReference<XmppActivity> activity;
1112		private Message message = null;
1113
1114		private BitmapWorkerTask(XmppActivity activity, ImageView imageView) {
1115			this.activity = new WeakReference<>(activity);
1116			this.imageViewReference = new WeakReference<>(imageView);
1117		}
1118
1119		@Override
1120		protected Bitmap doInBackground(Message... params) {
1121			if (isCancelled()) {
1122				return null;
1123			}
1124			message = params[0];
1125			try {
1126				XmppActivity activity = this.activity.get();
1127				if (activity != null && activity.xmppConnectionService != null) {
1128					return activity.xmppConnectionService.getFileBackend().getThumbnail(message, (int) (activity.metrics.density * 288), false);
1129				} else {
1130					return null;
1131				}
1132			} catch (FileNotFoundException e) {
1133				return null;
1134			}
1135		}
1136
1137		@Override
1138		protected void onPostExecute(Bitmap bitmap) {
1139			if (bitmap != null && !isCancelled()) {
1140				final ImageView imageView = imageViewReference.get();
1141				if (imageView != null) {
1142					imageView.setImageBitmap(bitmap);
1143					imageView.setBackgroundColor(0x00000000);
1144				}
1145			}
1146		}
1147	}
1148
1149	private static class AsyncDrawable extends BitmapDrawable {
1150		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1151
1152		private AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1153			super(res, bitmap);
1154			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1155		}
1156
1157		private BitmapWorkerTask getBitmapWorkerTask() {
1158			return bitmapWorkerTaskReference.get();
1159		}
1160	}
1161}