1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.annotation.TargetApi;
   6import android.support.v7.app.AlertDialog;
   7import android.support.v7.app.AlertDialog.Builder;
   8import android.app.PendingIntent;
   9import android.content.ActivityNotFoundException;
  10import android.content.ClipData;
  11import android.content.ClipboardManager;
  12import android.content.ComponentName;
  13import android.content.Context;
  14import android.content.DialogInterface;
  15import android.content.Intent;
  16import android.content.IntentSender.SendIntentException;
  17import android.content.ServiceConnection;
  18import android.content.SharedPreferences;
  19import android.content.pm.PackageManager;
  20import android.content.pm.ResolveInfo;
  21import android.content.res.Resources;
  22import android.content.res.TypedArray;
  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.ConnectivityManager;
  29import android.net.Uri;
  30import android.os.AsyncTask;
  31import android.os.Build;
  32import android.os.Bundle;
  33import android.os.Handler;
  34import android.os.IBinder;
  35import android.os.PowerManager;
  36import android.os.SystemClock;
  37import android.preference.PreferenceManager;
  38import android.support.v4.content.ContextCompat;
  39import android.support.v7.app.ActionBar;
  40import android.support.v7.app.AppCompatActivity;
  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 java.io.FileNotFoundException;
  52import java.lang.ref.WeakReference;
  53import java.util.ArrayList;
  54import java.util.Collections;
  55import java.util.List;
  56import java.util.Map;
  57import java.util.concurrent.RejectedExecutionException;
  58import java.util.concurrent.atomic.AtomicInteger;
  59
  60import eu.siacs.conversations.Config;
  61import eu.siacs.conversations.R;
  62import eu.siacs.conversations.crypto.PgpEngine;
  63import eu.siacs.conversations.entities.Account;
  64import eu.siacs.conversations.entities.Contact;
  65import eu.siacs.conversations.entities.Conversation;
  66import eu.siacs.conversations.entities.Message;
  67import eu.siacs.conversations.entities.MucOptions;
  68import eu.siacs.conversations.entities.Presences;
  69import eu.siacs.conversations.services.AvatarService;
  70import eu.siacs.conversations.services.BarcodeProvider;
  71import eu.siacs.conversations.services.XmppConnectionService;
  72import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  73import eu.siacs.conversations.ui.util.PresenceSelector;
  74import eu.siacs.conversations.utils.CryptoHelper;
  75import eu.siacs.conversations.utils.ExceptionHelper;
  76import eu.siacs.conversations.utils.UIHelper;
  77import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  78import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  79import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  80import eu.siacs.conversations.xmpp.jid.Jid;
  81
  82public abstract class XmppActivity extends AppCompatActivity {
  83
  84	public static final String EXTRA_ACCOUNT = "account";
  85	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
  86	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
  87	protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
  88	protected static final int REQUEST_BATTERY_OP = 0x13849ff;
  89	public XmppConnectionService xmppConnectionService;
  90	public boolean xmppConnectionServiceBound = false;
  91	protected boolean registeredListeners = false;
  92
  93	protected int mPrimaryTextColor;
  94	protected int mSecondaryTextColor;
  95	protected int mTertiaryTextColor;
  96	protected int mPrimaryBackgroundColor;
  97	protected int mSecondaryBackgroundColor;
  98	protected int mColorRed;
  99	protected int mColorOrange;
 100	protected int mColorGreen;
 101	protected int mPrimaryColor;
 102
 103	protected boolean mUseSubject = true;
 104	protected int mTheme;
 105	protected boolean mUsingEnterKey = false;
 106	protected Toast mToast;
 107	public Runnable onOpenPGPKeyPublished = () -> Toast.makeText(XmppActivity.this, R.string.openpgp_has_been_published, Toast.LENGTH_SHORT).show();
 108	protected ConferenceInvite mPendingConferenceInvite = null;
 109	protected ServiceConnection mConnection = new ServiceConnection() {
 110
 111		@Override
 112		public void onServiceConnected(ComponentName className, IBinder service) {
 113			XmppConnectionBinder binder = (XmppConnectionBinder) service;
 114			xmppConnectionService = binder.getService();
 115			xmppConnectionServiceBound = true;
 116			if (!registeredListeners && shouldRegisterListeners()) {
 117				registerListeners();
 118				registeredListeners = true;
 119			}
 120			onBackendConnected();
 121		}
 122
 123		@Override
 124		public void onServiceDisconnected(ComponentName arg0) {
 125			xmppConnectionServiceBound = false;
 126		}
 127	};
 128	private DisplayMetrics metrics;
 129	private long mLastUiRefresh = 0;
 130	private Handler mRefreshUiHandler = new Handler();
 131	private Runnable mRefreshUiRunnable = () -> {
 132		mLastUiRefresh = SystemClock.elapsedRealtime();
 133		refreshUiReal();
 134	};
 135	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 136		@Override
 137		public void success(final Conversation conversation) {
 138			runOnUiThread(() -> {
 139				switchToConversation(conversation);
 140				hideToast();
 141			});
 142		}
 143
 144		@Override
 145		public void error(final int errorCode, Conversation object) {
 146			runOnUiThread(() -> replaceToast(getString(errorCode)));
 147		}
 148
 149		@Override
 150		public void userInputRequried(PendingIntent pi, Conversation object) {
 151
 152		}
 153	};
 154
 155	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 156		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 157
 158		if (bitmapWorkerTask != null) {
 159			final Message oldMessage = bitmapWorkerTask.message;
 160			if (oldMessage == null || message != oldMessage) {
 161				bitmapWorkerTask.cancel(true);
 162			} else {
 163				return false;
 164			}
 165		}
 166		return true;
 167	}
 168
 169	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 170		if (imageView != null) {
 171			final Drawable drawable = imageView.getDrawable();
 172			if (drawable instanceof AsyncDrawable) {
 173				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 174				return asyncDrawable.getBitmapWorkerTask();
 175			}
 176		}
 177		return null;
 178	}
 179
 180	protected void hideToast() {
 181		if (mToast != null) {
 182			mToast.cancel();
 183		}
 184	}
 185
 186	protected void replaceToast(String msg) {
 187		replaceToast(msg, true);
 188	}
 189
 190	protected void replaceToast(String msg, boolean showlong) {
 191		hideToast();
 192		mToast = Toast.makeText(this, msg, showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 193		mToast.show();
 194	}
 195
 196	protected final void refreshUi() {
 197		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 198		if (diff > Config.REFRESH_UI_INTERVAL) {
 199			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 200			runOnUiThread(mRefreshUiRunnable);
 201		} else {
 202			final long next = Config.REFRESH_UI_INTERVAL - diff;
 203			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 204			mRefreshUiHandler.postDelayed(mRefreshUiRunnable, next);
 205		}
 206	}
 207
 208	abstract protected void refreshUiReal();
 209
 210	@Override
 211	protected void onStart() {
 212		super.onStart();
 213		if (!xmppConnectionServiceBound) {
 214			connectToBackend();
 215		} else {
 216			if (!registeredListeners) {
 217				this.registerListeners();
 218				this.registeredListeners = true;
 219			}
 220			this.onBackendConnected();
 221		}
 222	}
 223
 224	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 225	protected boolean shouldRegisterListeners() {
 226		if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
 227			return !isDestroyed() && !isFinishing();
 228		} else {
 229			return !isFinishing();
 230		}
 231	}
 232
 233	public void connectToBackend() {
 234		Intent intent = new Intent(this, XmppConnectionService.class);
 235		intent.setAction("ui");
 236		startService(intent);
 237		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 238	}
 239
 240	@Override
 241	protected void onStop() {
 242		super.onStop();
 243		if (xmppConnectionServiceBound) {
 244			if (registeredListeners) {
 245				this.unregisterListeners();
 246				this.registeredListeners = false;
 247			}
 248			unbindService(mConnection);
 249			xmppConnectionServiceBound = false;
 250		}
 251	}
 252
 253	protected void hideKeyboard() {
 254		final InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 255		View focus = getCurrentFocus();
 256		if (focus != null && inputManager != null) {
 257			inputManager.hideSoftInputFromWindow(focus.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
 258		}
 259	}
 260
 261	public boolean hasPgp() {
 262		return xmppConnectionService.getPgpEngine() != null;
 263	}
 264
 265	public void showInstallPgpDialog() {
 266		Builder builder = new AlertDialog.Builder(this);
 267		builder.setTitle(getString(R.string.openkeychain_required));
 268		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 269		builder.setMessage(getText(R.string.openkeychain_required_long));
 270		builder.setNegativeButton(getString(R.string.cancel), null);
 271		builder.setNeutralButton(getString(R.string.restart),
 272				(dialog, which) -> {
 273					if (xmppConnectionServiceBound) {
 274						unbindService(mConnection);
 275						xmppConnectionServiceBound = false;
 276					}
 277					stopService(new Intent(XmppActivity.this,
 278							XmppConnectionService.class));
 279					finish();
 280				});
 281		builder.setPositiveButton(getString(R.string.install),
 282				(dialog, which) -> {
 283					Uri uri = Uri
 284							.parse("market://details?id=org.sufficientlysecure.keychain");
 285					Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 286							uri);
 287					PackageManager manager = getApplicationContext()
 288							.getPackageManager();
 289					List<ResolveInfo> infos = manager
 290							.queryIntentActivities(marketIntent, 0);
 291					if (infos.size() > 0) {
 292						startActivity(marketIntent);
 293					} else {
 294						uri = Uri.parse("http://www.openkeychain.org/");
 295						Intent browserIntent = new Intent(
 296								Intent.ACTION_VIEW, uri);
 297						startActivity(browserIntent);
 298					}
 299					finish();
 300				});
 301		builder.create().show();
 302	}
 303
 304	abstract void onBackendConnected();
 305
 306	protected void registerListeners() {
 307		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 308			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 309		}
 310		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 311			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 312		}
 313		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 314			this.xmppConnectionService.setOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 315		}
 316		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 317			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 318		}
 319		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 320			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 321		}
 322		if (this instanceof OnUpdateBlocklist) {
 323			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 324		}
 325		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 326			this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 327		}
 328		if (this instanceof OnKeyStatusUpdated) {
 329			this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 330		}
 331	}
 332
 333	protected void unregisterListeners() {
 334		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 335			this.xmppConnectionService.removeOnConversationListChangedListener();
 336		}
 337		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 338			this.xmppConnectionService.removeOnAccountListChangedListener();
 339		}
 340		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 341			this.xmppConnectionService.removeOnCaptchaRequestedListener();
 342		}
 343		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 344			this.xmppConnectionService.removeOnRosterUpdateListener();
 345		}
 346		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 347			this.xmppConnectionService.removeOnMucRosterUpdateListener();
 348		}
 349		if (this instanceof OnUpdateBlocklist) {
 350			this.xmppConnectionService.removeOnUpdateBlocklistListener();
 351		}
 352		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 353			this.xmppConnectionService.removeOnShowErrorToastListener();
 354		}
 355		if (this instanceof OnKeyStatusUpdated) {
 356			this.xmppConnectionService.removeOnNewKeysAvailableListener();
 357		}
 358	}
 359
 360	@Override
 361	public boolean onOptionsItemSelected(final MenuItem item) {
 362		switch (item.getItemId()) {
 363			case R.id.action_settings:
 364				startActivity(new Intent(this, SettingsActivity.class));
 365				break;
 366			case R.id.action_accounts:
 367				startActivity(new Intent(this, ManageAccountActivity.class));
 368				break;
 369			case android.R.id.home:
 370				finish();
 371				break;
 372			case R.id.action_show_qr_code:
 373				showQrCode();
 374				break;
 375		}
 376		return super.onOptionsItemSelected(item);
 377	}
 378
 379	public void selectPresence(final Conversation conversation, final PresenceSelector.OnPresenceSelected listener) {
 380		final Contact contact = conversation.getContact();
 381		if (!contact.showInRoster()) {
 382			showAddToRosterDialog(conversation.getContact());
 383		} else {
 384			final Presences presences = contact.getPresences();
 385			if (presences.size() == 0) {
 386				if (!contact.getOption(Contact.Options.TO)
 387						&& !contact.getOption(Contact.Options.ASKING)
 388						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
 389					showAskForPresenceDialog(contact);
 390				} else if (!contact.getOption(Contact.Options.TO)
 391						|| !contact.getOption(Contact.Options.FROM)) {
 392					PresenceSelector.warnMutualPresenceSubscription(this, conversation, listener);
 393				} else {
 394					conversation.setNextCounterpart(null);
 395					listener.onPresenceSelected();
 396				}
 397			} else if (presences.size() == 1) {
 398				String presence = presences.toResourceArray()[0];
 399				try {
 400					conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
 401				} catch (InvalidJidException e) {
 402					conversation.setNextCounterpart(null);
 403				}
 404				listener.onPresenceSelected();
 405			} else {
 406				PresenceSelector.showPresenceSelectionDialog(this, conversation, listener);
 407			}
 408		}
 409	}
 410
 411	@Override
 412	protected void onCreate(Bundle savedInstanceState) {
 413		super.onCreate(savedInstanceState);
 414		metrics = getResources().getDisplayMetrics();
 415		ExceptionHelper.init(getApplicationContext());
 416
 417		mPrimaryTextColor = ContextCompat.getColor(this, R.color.black87);
 418		mSecondaryTextColor = ContextCompat.getColor(this, R.color.black54);
 419		mTertiaryTextColor = ContextCompat.getColor(this, R.color.black12);
 420		mColorRed = ContextCompat.getColor(this, R.color.red800);
 421		mColorOrange = ContextCompat.getColor(this, R.color.orange500);
 422		mColorGreen = ContextCompat.getColor(this, R.color.green500);
 423		mPrimaryColor = ContextCompat.getColor(this, R.color.primary500);
 424		mPrimaryBackgroundColor = ContextCompat.getColor(this, R.color.grey50);
 425		mSecondaryBackgroundColor = ContextCompat.getColor(this, R.color.grey200);
 426
 427		this.mTheme = findTheme();
 428		if (isDarkTheme()) {
 429			mPrimaryTextColor = ContextCompat.getColor(this, R.color.white);
 430			mSecondaryTextColor = ContextCompat.getColor(this, R.color.white70);
 431			mTertiaryTextColor = ContextCompat.getColor(this, R.color.white12);
 432			mPrimaryBackgroundColor = ContextCompat.getColor(this, R.color.grey800);
 433			mSecondaryBackgroundColor = ContextCompat.getColor(this, R.color.grey900);
 434		}
 435		setTheme(this.mTheme);
 436
 437		this.mUsingEnterKey = usingEnterKey();
 438		mUseSubject = getPreferences().getBoolean("use_subject", getResources().getBoolean(R.bool.use_subject));
 439		final ActionBar ab = getSupportActionBar();
 440		if (ab != null) {
 441			ab.setDisplayHomeAsUpEnabled(true);
 442		}
 443	}
 444
 445	public boolean isDarkTheme() {
 446		return this.mTheme == R.style.ConversationsTheme_Dark || this.mTheme == R.style.ConversationsTheme_Dark_LargerText;
 447	}
 448
 449	public int getThemeResource(int r_attr_name, int r_drawable_def) {
 450		int[] attrs = {r_attr_name};
 451		TypedArray ta = this.getTheme().obtainStyledAttributes(attrs);
 452
 453		int res = ta.getResourceId(0, r_drawable_def);
 454		ta.recycle();
 455
 456		return res;
 457	}
 458
 459	protected boolean isOptimizingBattery() {
 460		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 461			final PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 462			return pm != null
 463					&& !pm.isIgnoringBatteryOptimizations(getPackageName());
 464		} else {
 465			return false;
 466		}
 467	}
 468
 469	protected boolean isAffectedByDataSaver() {
 470		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 471			final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 472			return cm != null
 473					&& cm.isActiveNetworkMetered()
 474					&& cm.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 475		} else {
 476			return false;
 477		}
 478	}
 479
 480	protected boolean usingEnterKey() {
 481		return getPreferences().getBoolean("display_enter_key", getResources().getBoolean(R.bool.display_enter_key));
 482	}
 483
 484	protected SharedPreferences getPreferences() {
 485		return PreferenceManager
 486				.getDefaultSharedPreferences(getApplicationContext());
 487	}
 488
 489	public boolean useSubjectToIdentifyConference() {
 490		return mUseSubject;
 491	}
 492
 493	public void switchToConversation(Conversation conversation) {
 494		switchToConversation(conversation, null, false);
 495	}
 496
 497	public void switchToConversation(Conversation conversation, String text,
 498	                                 boolean newTask) {
 499		switchToConversation(conversation, text, null, false, newTask);
 500	}
 501
 502	public void highlightInMuc(Conversation conversation, String nick) {
 503		switchToConversation(conversation, null, nick, false, false);
 504	}
 505
 506	public void privateMsgInMuc(Conversation conversation, String nick) {
 507		switchToConversation(conversation, null, nick, true, false);
 508	}
 509
 510	private void switchToConversation(Conversation conversation, String text, String nick, boolean pm, boolean newTask) {
 511		Intent viewConversationIntent = new Intent(this,
 512				ConversationActivity.class);
 513		viewConversationIntent.setAction(ConversationActivity.ACTION_VIEW_CONVERSATION);
 514		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
 515				conversation.getUuid());
 516		if (text != null) {
 517			viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
 518		}
 519		if (nick != null) {
 520			viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
 521			viewConversationIntent.putExtra(ConversationActivity.PRIVATE_MESSAGE, pm);
 522		}
 523		if (newTask) {
 524			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 525					| Intent.FLAG_ACTIVITY_NEW_TASK
 526					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
 527		} else {
 528			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 529					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
 530		}
 531		startActivity(viewConversationIntent);
 532		finish();
 533	}
 534
 535	public void switchToContactDetails(Contact contact) {
 536		switchToContactDetails(contact, null);
 537	}
 538
 539	public void switchToContactDetails(Contact contact, String messageFingerprint) {
 540		Intent intent = new Intent(this, ContactDetailsActivity.class);
 541		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 542		intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().toBareJid().toString());
 543		intent.putExtra("contact", contact.getJid().toString());
 544		intent.putExtra("fingerprint", messageFingerprint);
 545		startActivity(intent);
 546	}
 547
 548	public void switchToAccount(Account account) {
 549		switchToAccount(account, false);
 550	}
 551
 552	public void switchToAccount(Account account, boolean init) {
 553		Intent intent = new Intent(this, EditAccountActivity.class);
 554		intent.putExtra("jid", account.getJid().toBareJid().toString());
 555		intent.putExtra("init", init);
 556		if (init) {
 557			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
 558		}
 559		startActivity(intent);
 560		if (init) {
 561			overridePendingTransition(0, 0);
 562		}
 563	}
 564
 565	protected void delegateUriPermissionsToService(Uri uri) {
 566		Intent intent = new Intent(this,XmppConnectionService.class);
 567		intent.setAction(Intent.ACTION_SEND);
 568		intent.setData(uri);
 569		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 570		startService(intent);
 571	}
 572
 573	protected void inviteToConversation(Conversation conversation) {
 574		Intent intent = new Intent(this, ChooseContactActivity.class);
 575		List<String> contacts = new ArrayList<>();
 576		if (conversation.getMode() == Conversation.MODE_MULTI) {
 577			for (MucOptions.User user : conversation.getMucOptions().getUsers(false)) {
 578				Jid jid = user.getRealJid();
 579				if (jid != null) {
 580					contacts.add(jid.toBareJid().toString());
 581				}
 582			}
 583		} else {
 584			contacts.add(conversation.getJid().toBareJid().toString());
 585		}
 586		intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()]));
 587		intent.putExtra("conversation", conversation.getUuid());
 588		intent.putExtra("multiple", true);
 589		intent.putExtra("show_enter_jid", true);
 590		intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 591		startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
 592	}
 593
 594	protected void announcePgp(Account account, final Conversation conversation, Intent intent, final Runnable onSuccess) {
 595		if (account.getPgpId() == 0) {
 596			choosePgpSignId(account);
 597		} else {
 598			String status = null;
 599			if (manuallyChangePresence()) {
 600				status = account.getPresenceStatusMessage();
 601			}
 602			if (status == null) {
 603				status = "";
 604			}
 605			xmppConnectionService.getPgpEngine().generateSignature(intent, account, status, new UiCallback<Account>() {
 606
 607				@Override
 608				public void userInputRequried(PendingIntent pi, Account account) {
 609					try {
 610						startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 611					} catch (final SendIntentException ignored) {
 612					}
 613				}
 614
 615				@Override
 616				public void success(Account account) {
 617					xmppConnectionService.databaseBackend.updateAccount(account);
 618					xmppConnectionService.sendPresence(account);
 619					if (conversation != null) {
 620						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 621						xmppConnectionService.updateConversation(conversation);
 622						refreshUi();
 623					}
 624					if (onSuccess != null) {
 625						runOnUiThread(onSuccess);
 626					}
 627				}
 628
 629				@Override
 630				public void error(int error, Account account) {
 631					if (error == 0 && account != null) {
 632						account.setPgpSignId(0);
 633						account.unsetPgpSignature();
 634						xmppConnectionService.databaseBackend.updateAccount(account);
 635						choosePgpSignId(account);
 636					} else {
 637						displayErrorDialog(error);
 638					}
 639				}
 640			});
 641		}
 642	}
 643
 644	protected boolean noAccountUsesPgp() {
 645		if (!hasPgp()) {
 646			return true;
 647		}
 648		for (Account account : xmppConnectionService.getAccounts()) {
 649			if (account.getPgpId() != 0) {
 650				return false;
 651			}
 652		}
 653		return true;
 654	}
 655
 656	@SuppressWarnings("deprecation")
 657	@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 658	protected void setListItemBackgroundOnView(View view) {
 659		int sdk = android.os.Build.VERSION.SDK_INT;
 660		if (sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
 661			view.setBackgroundDrawable(getResources().getDrawable(R.drawable.greybackground));
 662		} else {
 663			view.setBackground(getResources().getDrawable(R.drawable.greybackground));
 664		}
 665	}
 666
 667	protected void choosePgpSignId(Account account) {
 668		xmppConnectionService.getPgpEngine().chooseKey(account, new UiCallback<Account>() {
 669			@Override
 670			public void success(Account account1) {
 671			}
 672
 673			@Override
 674			public void error(int errorCode, Account object) {
 675
 676			}
 677
 678			@Override
 679			public void userInputRequried(PendingIntent pi, Account object) {
 680				try {
 681					startIntentSenderForResult(pi.getIntentSender(),
 682							REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);
 683				} catch (final SendIntentException ignored) {
 684				}
 685			}
 686		});
 687	}
 688
 689	protected void displayErrorDialog(final int errorCode) {
 690		runOnUiThread(() -> {
 691			Builder builder = new Builder(XmppActivity.this);
 692			builder.setIconAttribute(android.R.attr.alertDialogIcon);
 693			builder.setTitle(getString(R.string.error));
 694			builder.setMessage(errorCode);
 695			builder.setNeutralButton(R.string.accept, null);
 696			builder.create().show();
 697		});
 698
 699	}
 700
 701	protected void showAddToRosterDialog(final Contact contact) {
 702		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 703		builder.setTitle(contact.getJid().toString());
 704		builder.setMessage(getString(R.string.not_in_roster));
 705		builder.setNegativeButton(getString(R.string.cancel), null);
 706		builder.setPositiveButton(getString(R.string.add_contact),
 707				(dialog, which) -> {
 708					final Jid jid = contact.getJid();
 709					Account account = contact.getAccount();
 710					Contact contact1 = account.getRoster().getContact(jid);
 711					xmppConnectionService.createContact(contact1);
 712				});
 713		builder.create().show();
 714	}
 715
 716	private void showAskForPresenceDialog(final Contact contact) {
 717		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 718		builder.setTitle(contact.getJid().toString());
 719		builder.setMessage(R.string.request_presence_updates);
 720		builder.setNegativeButton(R.string.cancel, null);
 721		builder.setPositiveButton(R.string.request_now,
 722				(dialog, which) -> {
 723					if (xmppConnectionServiceBound) {
 724						xmppConnectionService.sendPresencePacket(contact
 725								.getAccount(), xmppConnectionService
 726								.getPresenceGenerator()
 727								.requestPresenceUpdatesFrom(contact));
 728					}
 729				});
 730		builder.create().show();
 731	}
 732
 733	protected void quickEdit(String previousValue, int hint, OnValueEdited callback) {
 734		quickEdit(previousValue, callback, hint, false);
 735	}
 736
 737	protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 738		quickEdit(previousValue, callback, R.string.password, true);
 739	}
 740
 741	@SuppressLint("InflateParams")
 742	private void quickEdit(final String previousValue,
 743	                       final OnValueEdited callback,
 744	                       final int hint,
 745	                       boolean password) {
 746		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 747		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
 748		final EditText editor = view.findViewById(R.id.editor);
 749		if (password) {
 750			editor.setInputType(InputType.TYPE_CLASS_TEXT
 751					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
 752		}
 753		builder.setPositiveButton(R.string.accept, null);
 754		if (hint != 0) {
 755			editor.setHint(hint);
 756		}
 757		editor.requestFocus();
 758		editor.setText("");
 759		if (previousValue != null) {
 760			editor.getText().append(previousValue);
 761		}
 762		builder.setView(view);
 763		builder.setNegativeButton(R.string.cancel, null);
 764		final AlertDialog dialog = builder.create();
 765		dialog.show();
 766		View.OnClickListener clickListener = v -> {
 767			String value = editor.getText().toString();
 768			if (!value.equals(previousValue) && value.trim().length() > 0) {
 769				String error = callback.onValueEdited(value);
 770				if (error != null) {
 771					editor.setError(error);
 772					return;
 773				}
 774			}
 775			dialog.dismiss();
 776		};
 777		dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(clickListener);
 778	}
 779
 780	public boolean hasStoragePermission(int requestCode) {
 781		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 782			if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 783				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 784				return false;
 785			} else {
 786				return true;
 787			}
 788		} else {
 789			return true;
 790		}
 791	}
 792
 793	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 794		super.onActivityResult(requestCode, resultCode, data);
 795		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 796			mPendingConferenceInvite = ConferenceInvite.parse(data);
 797			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 798				if (mPendingConferenceInvite.execute(this)) {
 799					mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 800					mToast.show();
 801				}
 802				mPendingConferenceInvite = null;
 803			}
 804		}
 805	}
 806
 807	public int getTertiaryTextColor() {
 808		return this.mTertiaryTextColor;
 809	}
 810
 811	public int getSecondaryTextColor() {
 812		return this.mSecondaryTextColor;
 813	}
 814
 815	public int getPrimaryTextColor() {
 816		return this.mPrimaryTextColor;
 817	}
 818
 819	public int getWarningTextColor() {
 820		return this.mColorRed;
 821	}
 822
 823	public int getOnlineColor() {
 824		return this.mColorGreen;
 825	}
 826
 827	public int getPrimaryBackgroundColor() {
 828		return this.mPrimaryBackgroundColor;
 829	}
 830
 831	public int getSecondaryBackgroundColor() {
 832		return this.mSecondaryBackgroundColor;
 833	}
 834
 835	public int getPixel(int dp) {
 836		DisplayMetrics metrics = getResources().getDisplayMetrics();
 837		return ((int) (dp * metrics.density));
 838	}
 839
 840	public boolean copyTextToClipboard(String text, int labelResId) {
 841		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 842		String label = getResources().getString(labelResId);
 843		if (mClipBoardManager != null) {
 844			ClipData mClipData = ClipData.newPlainText(label, text);
 845			mClipBoardManager.setPrimaryClip(mClipData);
 846			return true;
 847		}
 848		return false;
 849	}
 850
 851	protected boolean neverCompressPictures() {
 852		return getPreferences().getString("picture_compression", getResources().getString(R.string.picture_compression)).equals("never");
 853	}
 854
 855	protected boolean manuallyChangePresence() {
 856		return getPreferences().getBoolean(SettingsActivity.MANUALLY_CHANGE_PRESENCE, getResources().getBoolean(R.bool.manually_change_presence));
 857	}
 858
 859	protected String getShareableUri() {
 860		return getShareableUri(false);
 861	}
 862
 863	protected String getShareableUri(boolean http) {
 864		return null;
 865	}
 866
 867	protected void shareLink(boolean http) {
 868		String uri = getShareableUri(http);
 869		if (uri == null || uri.isEmpty()) {
 870			return;
 871		}
 872		Intent intent = new Intent(Intent.ACTION_SEND);
 873		intent.setType("text/plain");
 874		intent.putExtra(Intent.EXTRA_TEXT, getShareableUri(http));
 875		try {
 876			startActivity(Intent.createChooser(intent, getText(R.string.share_uri_with)));
 877		} catch (ActivityNotFoundException e) {
 878			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 879		}
 880	}
 881
 882	protected void launchOpenKeyChain(long keyId) {
 883		PgpEngine pgp = XmppActivity.this.xmppConnectionService.getPgpEngine();
 884		try {
 885			startIntentSenderForResult(
 886					pgp.getIntentForKey(keyId).getIntentSender(), 0, null, 0,
 887					0, 0);
 888		} catch (Throwable e) {
 889			Toast.makeText(XmppActivity.this, R.string.openpgp_error, Toast.LENGTH_SHORT).show();
 890		}
 891	}
 892
 893	@Override
 894	public void onResume() {
 895		super.onResume();
 896	}
 897
 898	protected int findTheme() {
 899		Boolean dark = getPreferences().getString(SettingsActivity.THEME, getResources().getString(R.string.theme)).equals("dark");
 900		Boolean larger = getPreferences().getBoolean("use_larger_font", getResources().getBoolean(R.bool.use_larger_font));
 901
 902		if (dark) {
 903			if (larger)
 904				return R.style.ConversationsTheme_Dark_LargerText;
 905			else
 906				return R.style.ConversationsTheme_Dark;
 907		} else {
 908			if (larger)
 909				return R.style.ConversationsTheme_LargerText;
 910			else
 911				return R.style.ConversationsTheme;
 912		}
 913	}
 914
 915	@Override
 916	public void onPause() {
 917		super.onPause();
 918	}
 919
 920	protected void showQrCode() {
 921		final String uri = getShareableUri();
 922		if (uri == null || uri.isEmpty()) {
 923			return;
 924		}
 925		Point size = new Point();
 926		getWindowManager().getDefaultDisplay().getSize(size);
 927		final int width = (size.x < size.y ? size.x : size.y);
 928		Bitmap bitmap = BarcodeProvider.create2dBarcodeBitmap(uri, width);
 929		ImageView view = new ImageView(this);
 930		view.setBackgroundColor(Color.WHITE);
 931		view.setImageBitmap(bitmap);
 932		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 933		builder.setView(view);
 934		builder.create().show();
 935	}
 936
 937	protected Account extractAccount(Intent intent) {
 938		String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
 939		try {
 940			return jid != null ? xmppConnectionService.findAccountByJid(Jid.fromString(jid)) : null;
 941		} catch (InvalidJidException e) {
 942			return null;
 943		}
 944	}
 945
 946	public AvatarService avatarService() {
 947		return xmppConnectionService.getAvatarService();
 948	}
 949
 950	public void loadBitmap(Message message, ImageView imageView) {
 951		Bitmap bm;
 952		try {
 953			bm = xmppConnectionService.getFileBackend().getThumbnail(message, (int) (metrics.density * 288), true);
 954		} catch (FileNotFoundException e) {
 955			bm = null;
 956		}
 957		if (bm != null) {
 958			cancelPotentialWork(message, imageView);
 959			imageView.setImageBitmap(bm);
 960			imageView.setBackgroundColor(0x00000000);
 961		} else {
 962			if (cancelPotentialWork(message, imageView)) {
 963				imageView.setBackgroundColor(0xff333333);
 964				imageView.setImageDrawable(null);
 965				final BitmapWorkerTask task = new BitmapWorkerTask(this, imageView);
 966				final AsyncDrawable asyncDrawable = new AsyncDrawable(
 967						getResources(), null, task);
 968				imageView.setImageDrawable(asyncDrawable);
 969				try {
 970					task.execute(message);
 971				} catch (final RejectedExecutionException ignored) {
 972					ignored.printStackTrace();
 973				}
 974			}
 975		}
 976	}
 977
 978	protected interface OnValueEdited {
 979		String onValueEdited(String value);
 980	}
 981
 982	public static class ConferenceInvite {
 983		private String uuid;
 984		private List<Jid> jids = new ArrayList<>();
 985
 986		public static ConferenceInvite parse(Intent data) {
 987			ConferenceInvite invite = new ConferenceInvite();
 988			invite.uuid = data.getStringExtra("conversation");
 989			if (invite.uuid == null) {
 990				return null;
 991			}
 992			try {
 993				if (data.getBooleanExtra("multiple", false)) {
 994					String[] toAdd = data.getStringArrayExtra("contacts");
 995					for (String item : toAdd) {
 996						invite.jids.add(Jid.fromString(item));
 997					}
 998				} else {
 999					invite.jids.add(Jid.fromString(data.getStringExtra("contact")));
1000				}
1001			} catch (final InvalidJidException ignored) {
1002				return null;
1003			}
1004			return invite;
1005		}
1006
1007		public boolean execute(XmppActivity activity) {
1008			XmppConnectionService service = activity.xmppConnectionService;
1009			Conversation conversation = service.findConversationByUuid(this.uuid);
1010			if (conversation == null) {
1011				return false;
1012			}
1013			if (conversation.getMode() == Conversation.MODE_MULTI) {
1014				for (Jid jid : jids) {
1015					service.invite(conversation, jid);
1016				}
1017				return false;
1018			} else {
1019				jids.add(conversation.getJid().toBareJid());
1020				return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
1021			}
1022		}
1023	}
1024
1025	static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1026		private final WeakReference<ImageView> imageViewReference;
1027		private final WeakReference<XmppActivity> activity;
1028		private Message message = null;
1029
1030		private BitmapWorkerTask(XmppActivity activity, ImageView imageView) {
1031			this.activity = new WeakReference<>(activity);
1032			this.imageViewReference = new WeakReference<>(imageView);
1033		}
1034
1035		@Override
1036		protected Bitmap doInBackground(Message... params) {
1037			if (isCancelled()) {
1038				return null;
1039			}
1040			message = params[0];
1041			try {
1042				XmppActivity activity = this.activity.get();
1043				if (activity != null && activity.xmppConnectionService != null) {
1044					return activity.xmppConnectionService.getFileBackend().getThumbnail(message, (int) (activity.metrics.density * 288), false);
1045				} else {
1046					return null;
1047				}
1048			} catch (FileNotFoundException e) {
1049				return null;
1050			}
1051		}
1052
1053		@Override
1054		protected void onPostExecute(Bitmap bitmap) {
1055			if (bitmap != null && !isCancelled()) {
1056				final ImageView imageView = imageViewReference.get();
1057				if (imageView != null) {
1058					imageView.setImageBitmap(bitmap);
1059					imageView.setBackgroundColor(0x00000000);
1060				}
1061			}
1062		}
1063	}
1064
1065	private static class AsyncDrawable extends BitmapDrawable {
1066		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1067
1068		private AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1069			super(res, bitmap);
1070			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1071		}
1072
1073		private BitmapWorkerTask getBitmapWorkerTask() {
1074			return bitmapWorkerTaskReference.get();
1075		}
1076	}
1077}