XmppActivity.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.annotation.TargetApi;
   6import android.app.PendingIntent;
   7import android.content.ActivityNotFoundException;
   8import android.content.ClipData;
   9import android.content.ClipboardManager;
  10import android.content.ComponentName;
  11import android.content.Context;
  12import android.content.DialogInterface;
  13import android.content.Intent;
  14import android.content.IntentSender.SendIntentException;
  15import android.content.ServiceConnection;
  16import android.content.SharedPreferences;
  17import android.content.pm.PackageManager;
  18import android.content.pm.ResolveInfo;
  19import android.content.res.Resources;
  20import android.content.res.TypedArray;
  21import android.graphics.Bitmap;
  22import android.graphics.Color;
  23import android.graphics.Point;
  24import android.graphics.drawable.BitmapDrawable;
  25import android.graphics.drawable.Drawable;
  26import android.net.ConnectivityManager;
  27import android.net.Uri;
  28import android.os.AsyncTask;
  29import android.os.Build;
  30import android.os.Bundle;
  31import android.os.Handler;
  32import android.os.IBinder;
  33import android.os.PowerManager;
  34import android.os.SystemClock;
  35import android.preference.PreferenceManager;
  36import android.support.v4.content.ContextCompat;
  37import android.support.v7.app.AlertDialog;
  38import android.support.v7.app.AlertDialog.Builder;
  39import android.support.v7.app.AppCompatDelegate;
  40import android.text.InputType;
  41import android.util.DisplayMetrics;
  42import android.util.Log;
  43import android.view.Menu;
  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.List;
  55import java.util.concurrent.RejectedExecutionException;
  56
  57import eu.siacs.conversations.Config;
  58import eu.siacs.conversations.R;
  59import eu.siacs.conversations.crypto.PgpEngine;
  60import eu.siacs.conversations.entities.Account;
  61import eu.siacs.conversations.entities.Contact;
  62import eu.siacs.conversations.entities.Conversation;
  63import eu.siacs.conversations.entities.Message;
  64import eu.siacs.conversations.entities.Presences;
  65import eu.siacs.conversations.services.AvatarService;
  66import eu.siacs.conversations.services.BarcodeProvider;
  67import eu.siacs.conversations.services.XmppConnectionService;
  68import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  69import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  70import eu.siacs.conversations.ui.util.PresenceSelector;
  71import eu.siacs.conversations.utils.ExceptionHelper;
  72import eu.siacs.conversations.utils.ThemeHelper;
  73import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  74import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  75import rocks.xmpp.addr.Jid;
  76
  77public abstract class XmppActivity extends ActionBarActivity {
  78
  79	public static final String EXTRA_ACCOUNT = "account";
  80	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
  81	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
  82	protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
  83	protected static final int REQUEST_BATTERY_OP = 0x49ff;
  84	public XmppConnectionService xmppConnectionService;
  85	public boolean xmppConnectionServiceBound = false;
  86	protected boolean registeredListeners = false;
  87
  88	protected int mColorRed;
  89	protected int mColorOrange;
  90	protected int mColorGreen;
  91
  92	protected static final String FRAGMENT_TAG_DIALOG = "dialog";
  93
  94	private boolean isCameraFeatureAvailable = false;
  95
  96	protected boolean mUseSubject = true;
  97	protected int mTheme;
  98	protected boolean mUsingEnterKey = false;
  99	protected Toast mToast;
 100	public Runnable onOpenPGPKeyPublished = () -> Toast.makeText(XmppActivity.this, R.string.openpgp_has_been_published, Toast.LENGTH_SHORT).show();
 101	protected ConferenceInvite mPendingConferenceInvite = null;
 102	protected ServiceConnection mConnection = new ServiceConnection() {
 103
 104		@Override
 105		public void onServiceConnected(ComponentName className, IBinder service) {
 106			XmppConnectionBinder binder = (XmppConnectionBinder) service;
 107			xmppConnectionService = binder.getService();
 108			xmppConnectionServiceBound = true;
 109			if (!registeredListeners && shouldRegisterListeners()) {
 110				registerListeners();
 111				registeredListeners = true;
 112			}
 113			onBackendConnected();
 114		}
 115
 116		@Override
 117		public void onServiceDisconnected(ComponentName arg0) {
 118			xmppConnectionServiceBound = false;
 119		}
 120	};
 121	private DisplayMetrics metrics;
 122	private long mLastUiRefresh = 0;
 123	private Handler mRefreshUiHandler = new Handler();
 124	private Runnable mRefreshUiRunnable = () -> {
 125		mLastUiRefresh = SystemClock.elapsedRealtime();
 126		refreshUiReal();
 127	};
 128	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 129		@Override
 130		public void success(final Conversation conversation) {
 131			runOnUiThread(() -> {
 132				switchToConversation(conversation);
 133				hideToast();
 134			});
 135		}
 136
 137		@Override
 138		public void error(final int errorCode, Conversation object) {
 139			runOnUiThread(() -> replaceToast(getString(errorCode)));
 140		}
 141
 142		@Override
 143		public void userInputRequried(PendingIntent pi, Conversation object) {
 144
 145		}
 146	};
 147	public boolean mSkipBackgroundBinding = false;
 148
 149	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 150		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 151
 152		if (bitmapWorkerTask != null) {
 153			final Message oldMessage = bitmapWorkerTask.message;
 154			if (oldMessage == null || message != oldMessage) {
 155				bitmapWorkerTask.cancel(true);
 156			} else {
 157				return false;
 158			}
 159		}
 160		return true;
 161	}
 162
 163	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 164		if (imageView != null) {
 165			final Drawable drawable = imageView.getDrawable();
 166			if (drawable instanceof AsyncDrawable) {
 167				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 168				return asyncDrawable.getBitmapWorkerTask();
 169			}
 170		}
 171		return null;
 172	}
 173
 174	protected void hideToast() {
 175		if (mToast != null) {
 176			mToast.cancel();
 177		}
 178	}
 179
 180	protected void replaceToast(String msg) {
 181		replaceToast(msg, true);
 182	}
 183
 184	protected void replaceToast(String msg, boolean showlong) {
 185		hideToast();
 186		mToast = Toast.makeText(this, msg, showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 187		mToast.show();
 188	}
 189
 190	protected final void refreshUi() {
 191		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 192		if (diff > Config.REFRESH_UI_INTERVAL) {
 193			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 194			runOnUiThread(mRefreshUiRunnable);
 195		} else {
 196			final long next = Config.REFRESH_UI_INTERVAL - diff;
 197			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 198			mRefreshUiHandler.postDelayed(mRefreshUiRunnable, next);
 199		}
 200	}
 201
 202	abstract protected void refreshUiReal();
 203
 204	@Override
 205	protected void onStart() {
 206		super.onStart();
 207		if (!xmppConnectionServiceBound) {
 208			if (this.mSkipBackgroundBinding) {
 209				Log.d(Config.LOGTAG,"skipping background binding");
 210			} else {
 211				connectToBackend();
 212			}
 213		} else {
 214			if (!registeredListeners) {
 215				this.registerListeners();
 216				this.registeredListeners = true;
 217			}
 218			this.onBackendConnected();
 219		}
 220	}
 221
 222	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 223	protected boolean shouldRegisterListeners() {
 224		if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
 225			return !isDestroyed() && !isFinishing();
 226		} else {
 227			return !isFinishing();
 228		}
 229	}
 230
 231	public void connectToBackend() {
 232		Intent intent = new Intent(this, XmppConnectionService.class);
 233		intent.setAction("ui");
 234		startService(intent);
 235		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 236	}
 237
 238	@Override
 239	protected void onStop() {
 240		super.onStop();
 241		if (xmppConnectionServiceBound) {
 242			if (registeredListeners) {
 243				this.unregisterListeners();
 244				this.registeredListeners = false;
 245			}
 246			unbindService(mConnection);
 247			xmppConnectionServiceBound = false;
 248		}
 249	}
 250
 251
 252	public boolean hasPgp() {
 253		return xmppConnectionService.getPgpEngine() != null;
 254	}
 255
 256	public void showInstallPgpDialog() {
 257		Builder builder = new AlertDialog.Builder(this);
 258		builder.setTitle(getString(R.string.openkeychain_required));
 259		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 260		builder.setMessage(getText(R.string.openkeychain_required_long));
 261		builder.setNegativeButton(getString(R.string.cancel), null);
 262		builder.setNeutralButton(getString(R.string.restart),
 263				(dialog, which) -> {
 264					if (xmppConnectionServiceBound) {
 265						unbindService(mConnection);
 266						xmppConnectionServiceBound = false;
 267					}
 268					stopService(new Intent(XmppActivity.this,
 269							XmppConnectionService.class));
 270					finish();
 271				});
 272		builder.setPositiveButton(getString(R.string.install),
 273				(dialog, which) -> {
 274					Uri uri = Uri
 275							.parse("market://details?id=org.sufficientlysecure.keychain");
 276					Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 277							uri);
 278					PackageManager manager = getApplicationContext()
 279							.getPackageManager();
 280					List<ResolveInfo> infos = manager
 281							.queryIntentActivities(marketIntent, 0);
 282					if (infos.size() > 0) {
 283						startActivity(marketIntent);
 284					} else {
 285						uri = Uri.parse("http://www.openkeychain.org/");
 286						Intent browserIntent = new Intent(
 287								Intent.ACTION_VIEW, uri);
 288						startActivity(browserIntent);
 289					}
 290					finish();
 291				});
 292		builder.create().show();
 293	}
 294
 295	abstract void onBackendConnected();
 296
 297	protected void registerListeners() {
 298		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 299			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 300		}
 301		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 302			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 303		}
 304		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 305			this.xmppConnectionService.setOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 306		}
 307		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 308			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 309		}
 310		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 311			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 312		}
 313		if (this instanceof OnUpdateBlocklist) {
 314			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 315		}
 316		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 317			this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 318		}
 319		if (this instanceof OnKeyStatusUpdated) {
 320			this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 321		}
 322	}
 323
 324	protected void unregisterListeners() {
 325		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 326			this.xmppConnectionService.removeOnConversationListChangedListener();
 327		}
 328		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 329			this.xmppConnectionService.removeOnAccountListChangedListener();
 330		}
 331		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 332			this.xmppConnectionService.removeOnCaptchaRequestedListener();
 333		}
 334		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 335			this.xmppConnectionService.removeOnRosterUpdateListener();
 336		}
 337		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 338			this.xmppConnectionService.removeOnMucRosterUpdateListener();
 339		}
 340		if (this instanceof OnUpdateBlocklist) {
 341			this.xmppConnectionService.removeOnUpdateBlocklistListener();
 342		}
 343		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 344			this.xmppConnectionService.removeOnShowErrorToastListener();
 345		}
 346		if (this instanceof OnKeyStatusUpdated) {
 347			this.xmppConnectionService.removeOnNewKeysAvailableListener();
 348		}
 349	}
 350
 351	@Override
 352	public boolean onOptionsItemSelected(final MenuItem item) {
 353		switch (item.getItemId()) {
 354			case R.id.action_settings:
 355				startActivity(new Intent(this, SettingsActivity.class));
 356				break;
 357			case R.id.action_accounts:
 358				startActivity(new Intent(this, ManageAccountActivity.class));
 359				break;
 360			case android.R.id.home:
 361				finish();
 362				break;
 363			case R.id.action_show_qr_code:
 364				showQrCode();
 365				break;
 366		}
 367		return super.onOptionsItemSelected(item);
 368	}
 369
 370	public void selectPresence(final Conversation conversation, final PresenceSelector.OnPresenceSelected listener) {
 371		final Contact contact = conversation.getContact();
 372		if (!contact.showInRoster()) {
 373			showAddToRosterDialog(conversation.getContact());
 374		} else {
 375			final Presences presences = contact.getPresences();
 376			if (presences.size() == 0) {
 377				if (!contact.getOption(Contact.Options.TO)
 378						&& !contact.getOption(Contact.Options.ASKING)
 379						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
 380					showAskForPresenceDialog(contact);
 381				} else if (!contact.getOption(Contact.Options.TO)
 382						|| !contact.getOption(Contact.Options.FROM)) {
 383					PresenceSelector.warnMutualPresenceSubscription(this, conversation, listener);
 384				} else {
 385					conversation.setNextCounterpart(null);
 386					listener.onPresenceSelected();
 387				}
 388			} else if (presences.size() == 1) {
 389				String presence = presences.toResourceArray()[0];
 390				try {
 391					conversation.setNextCounterpart(Jid.of(contact.getJid().getLocal(), contact.getJid().getDomain(), presence));
 392				} catch (IllegalArgumentException e) {
 393					conversation.setNextCounterpart(null);
 394				}
 395				listener.onPresenceSelected();
 396			} else {
 397				PresenceSelector.showPresenceSelectionDialog(this, conversation, listener);
 398			}
 399		}
 400	}
 401
 402	@Override
 403	protected void onCreate(Bundle savedInstanceState) {
 404		super.onCreate(savedInstanceState);
 405		metrics = getResources().getDisplayMetrics();
 406		ExceptionHelper.init(getApplicationContext());
 407		this.isCameraFeatureAvailable = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA);
 408
 409		mColorRed = ContextCompat.getColor(this, R.color.red800);
 410		mColorOrange = ContextCompat.getColor(this, R.color.orange500);
 411		mColorGreen = ContextCompat.getColor(this, R.color.green500);
 412
 413		this.mTheme = findTheme();
 414		setTheme(this.mTheme);
 415
 416		this.mUsingEnterKey = usingEnterKey();
 417		mUseSubject = getPreferences().getBoolean("use_subject", getResources().getBoolean(R.bool.use_subject));
 418	}
 419
 420	protected boolean isCameraFeatureAvailable() {
 421		return this.isCameraFeatureAvailable;
 422	}
 423
 424	public boolean isDarkTheme() {
 425		return ThemeHelper.isDark(mTheme);
 426	}
 427
 428	public int getThemeResource(int r_attr_name, int r_drawable_def) {
 429		int[] attrs = {r_attr_name};
 430		TypedArray ta = this.getTheme().obtainStyledAttributes(attrs);
 431
 432		int res = ta.getResourceId(0, r_drawable_def);
 433		ta.recycle();
 434
 435		return res;
 436	}
 437
 438	protected boolean isOptimizingBattery() {
 439		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 440			final PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 441			return pm != null
 442					&& !pm.isIgnoringBatteryOptimizations(getPackageName());
 443		} else {
 444			return false;
 445		}
 446	}
 447
 448	protected boolean isAffectedByDataSaver() {
 449		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 450			final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 451			return cm != null
 452					&& cm.isActiveNetworkMetered()
 453					&& cm.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 454		} else {
 455			return false;
 456		}
 457	}
 458
 459	protected boolean usingEnterKey() {
 460		return getPreferences().getBoolean("display_enter_key", getResources().getBoolean(R.bool.display_enter_key));
 461	}
 462
 463	protected SharedPreferences getPreferences() {
 464		return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 465	}
 466
 467	public boolean useSubjectToIdentifyConference() {
 468		return mUseSubject;
 469	}
 470
 471	public void switchToConversation(Conversation conversation) {
 472		switchToConversation(conversation, null, false);
 473	}
 474
 475	public void switchToConversation(Conversation conversation, String text,
 476	                                 boolean newTask) {
 477		switchToConversation(conversation, text, null, false, newTask);
 478	}
 479
 480	public void highlightInMuc(Conversation conversation, String nick) {
 481		switchToConversation(conversation, null, nick, false, false);
 482	}
 483
 484	public void privateMsgInMuc(Conversation conversation, String nick) {
 485		switchToConversation(conversation, null, nick, true, false);
 486	}
 487
 488	private void switchToConversation(Conversation conversation, String text, String nick, boolean pm, boolean newTask) {
 489		Intent intent = new Intent(this, ConversationsActivity.class);
 490		intent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
 491		intent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, conversation.getUuid());
 492		if (text != null) {
 493			intent.putExtra(ConversationsActivity.EXTRA_TEXT, text);
 494		}
 495		if (nick != null) {
 496			intent.putExtra(ConversationsActivity.EXTRA_NICK, nick);
 497			intent.putExtra(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, pm);
 498		}
 499		if (newTask) {
 500			intent.setFlags(intent.getFlags()
 501					| Intent.FLAG_ACTIVITY_NEW_TASK
 502					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
 503		} else {
 504			intent.setFlags(intent.getFlags()
 505					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
 506		}
 507		startActivity(intent);
 508		finish();
 509	}
 510
 511	public void switchToContactDetails(Contact contact) {
 512		switchToContactDetails(contact, null);
 513	}
 514
 515	public void switchToContactDetails(Contact contact, String messageFingerprint) {
 516		Intent intent = new Intent(this, ContactDetailsActivity.class);
 517		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 518		intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().asBareJid().toString());
 519		intent.putExtra("contact", contact.getJid().toString());
 520		intent.putExtra("fingerprint", messageFingerprint);
 521		startActivity(intent);
 522	}
 523
 524	public void switchToAccount(Account account) {
 525		switchToAccount(account, false);
 526	}
 527
 528	public void switchToAccount(Account account, boolean init) {
 529		Intent intent = new Intent(this, EditAccountActivity.class);
 530		intent.putExtra("jid", account.getJid().asBareJid().toString());
 531		intent.putExtra("init", init);
 532		if (init) {
 533			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
 534		}
 535		startActivity(intent);
 536		if (init) {
 537			overridePendingTransition(0, 0);
 538		}
 539	}
 540
 541	protected void delegateUriPermissionsToService(Uri uri) {
 542		Intent intent = new Intent(this,XmppConnectionService.class);
 543		intent.setAction(Intent.ACTION_SEND);
 544		intent.setData(uri);
 545		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 546		startService(intent);
 547	}
 548
 549	protected void inviteToConversation(Conversation conversation) {
 550		startActivityForResult(ChooseContactActivity.create(this,conversation), REQUEST_INVITE_TO_CONVERSATION);
 551	}
 552
 553	protected void announcePgp(final Account account, final Conversation conversation, Intent intent, final Runnable onSuccess) {
 554		if (account.getPgpId() == 0) {
 555			choosePgpSignId(account);
 556		} else {
 557			String status = null;
 558			if (manuallyChangePresence()) {
 559				status = account.getPresenceStatusMessage();
 560			}
 561			if (status == null) {
 562				status = "";
 563			}
 564			xmppConnectionService.getPgpEngine().generateSignature(intent, account, status, new UiCallback<String>() {
 565
 566				@Override
 567				public void userInputRequried(PendingIntent pi, String signature) {
 568					try {
 569						startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 570					} catch (final SendIntentException ignored) {
 571					}
 572				}
 573
 574				@Override
 575				public void success(String signature) {
 576					account.setPgpSignature(signature);
 577					xmppConnectionService.databaseBackend.updateAccount(account);
 578					xmppConnectionService.sendPresence(account);
 579					if (conversation != null) {
 580						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 581						xmppConnectionService.updateConversation(conversation);
 582						refreshUi();
 583					}
 584					if (onSuccess != null) {
 585						runOnUiThread(onSuccess);
 586					}
 587				}
 588
 589				@Override
 590				public void error(int error, String signature) {
 591					if (error == 0) {
 592						account.setPgpSignId(0);
 593						account.unsetPgpSignature();
 594						xmppConnectionService.databaseBackend.updateAccount(account);
 595						choosePgpSignId(account);
 596					} else {
 597						displayErrorDialog(error);
 598					}
 599				}
 600			});
 601		}
 602	}
 603
 604	protected boolean noAccountUsesPgp() {
 605		if (!hasPgp()) {
 606			return true;
 607		}
 608		for (Account account : xmppConnectionService.getAccounts()) {
 609			if (account.getPgpId() != 0) {
 610				return false;
 611			}
 612		}
 613		return true;
 614	}
 615
 616	@SuppressWarnings("deprecation")
 617	@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 618	protected void setListItemBackgroundOnView(View view) {
 619		int sdk = android.os.Build.VERSION.SDK_INT;
 620		if (sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
 621			view.setBackgroundDrawable(getResources().getDrawable(R.drawable.greybackground));
 622		} else {
 623			view.setBackground(getResources().getDrawable(R.drawable.greybackground));
 624		}
 625	}
 626
 627	protected void choosePgpSignId(Account account) {
 628		xmppConnectionService.getPgpEngine().chooseKey(account, new UiCallback<Account>() {
 629			@Override
 630			public void success(Account account1) {
 631			}
 632
 633			@Override
 634			public void error(int errorCode, Account object) {
 635
 636			}
 637
 638			@Override
 639			public void userInputRequried(PendingIntent pi, Account object) {
 640				try {
 641					startIntentSenderForResult(pi.getIntentSender(),
 642							REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);
 643				} catch (final SendIntentException ignored) {
 644				}
 645			}
 646		});
 647	}
 648
 649	protected void displayErrorDialog(final int errorCode) {
 650		runOnUiThread(() -> {
 651			Builder builder = new Builder(XmppActivity.this);
 652			builder.setIconAttribute(android.R.attr.alertDialogIcon);
 653			builder.setTitle(getString(R.string.error));
 654			builder.setMessage(errorCode);
 655			builder.setNeutralButton(R.string.accept, null);
 656			builder.create().show();
 657		});
 658
 659	}
 660
 661	protected void showAddToRosterDialog(final Contact contact) {
 662		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 663		builder.setTitle(contact.getJid().toString());
 664		builder.setMessage(getString(R.string.not_in_roster));
 665		builder.setNegativeButton(getString(R.string.cancel), null);
 666		builder.setPositiveButton(getString(R.string.add_contact), (dialog, which) -> xmppConnectionService.createContact(contact,true));
 667		builder.create().show();
 668	}
 669
 670	private void showAskForPresenceDialog(final Contact contact) {
 671		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 672		builder.setTitle(contact.getJid().toString());
 673		builder.setMessage(R.string.request_presence_updates);
 674		builder.setNegativeButton(R.string.cancel, null);
 675		builder.setPositiveButton(R.string.request_now,
 676				(dialog, which) -> {
 677					if (xmppConnectionServiceBound) {
 678						xmppConnectionService.sendPresencePacket(contact
 679								.getAccount(), xmppConnectionService
 680								.getPresenceGenerator()
 681								.requestPresenceUpdatesFrom(contact));
 682					}
 683				});
 684		builder.create().show();
 685	}
 686
 687	protected void quickEdit(String previousValue, int hint, OnValueEdited callback) {
 688		quickEdit(previousValue, callback, hint, false);
 689	}
 690
 691	protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 692		quickEdit(previousValue, callback, R.string.password, true);
 693	}
 694
 695	@SuppressLint("InflateParams")
 696	private void quickEdit(final String previousValue,
 697	                       final OnValueEdited callback,
 698	                       final int hint,
 699	                       boolean password) {
 700		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 701		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
 702		final EditText editor = view.findViewById(R.id.editor);
 703		if (password) {
 704			editor.setInputType(InputType.TYPE_CLASS_TEXT
 705					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
 706		}
 707		builder.setPositiveButton(R.string.accept, null);
 708		if (hint != 0) {
 709			editor.setHint(hint);
 710		}
 711		editor.requestFocus();
 712		editor.setText("");
 713		if (previousValue != null) {
 714			editor.getText().append(previousValue);
 715		}
 716		builder.setView(view);
 717		builder.setNegativeButton(R.string.cancel, null);
 718		final AlertDialog dialog = builder.create();
 719		dialog.show();
 720		View.OnClickListener clickListener = v -> {
 721			String value = editor.getText().toString();
 722			if (!value.equals(previousValue) && value.trim().length() > 0) {
 723				String error = callback.onValueEdited(value);
 724				if (error != null) {
 725					editor.setError(error);
 726					return;
 727				}
 728			}
 729			dialog.dismiss();
 730		};
 731		dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(clickListener);
 732	}
 733
 734	protected boolean hasStoragePermission(int requestCode) {
 735		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 736			if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 737				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 738				return false;
 739			} else {
 740				return true;
 741			}
 742		} else {
 743			return true;
 744		}
 745	}
 746
 747	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 748		super.onActivityResult(requestCode, resultCode, data);
 749		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 750			mPendingConferenceInvite = ConferenceInvite.parse(data);
 751			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 752				if (mPendingConferenceInvite.execute(this)) {
 753					mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 754					mToast.show();
 755				}
 756				mPendingConferenceInvite = null;
 757			}
 758		}
 759	}
 760
 761	public int getWarningTextColor() {
 762		return this.mColorRed;
 763	}
 764
 765	public int getOnlineColor() {
 766		return this.mColorGreen;
 767	}
 768
 769	public int getPixel(int dp) {
 770		DisplayMetrics metrics = getResources().getDisplayMetrics();
 771		return ((int) (dp * metrics.density));
 772	}
 773
 774	public boolean copyTextToClipboard(String text, int labelResId) {
 775		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 776		String label = getResources().getString(labelResId);
 777		if (mClipBoardManager != null) {
 778			ClipData mClipData = ClipData.newPlainText(label, text);
 779			mClipBoardManager.setPrimaryClip(mClipData);
 780			return true;
 781		}
 782		return false;
 783	}
 784
 785	protected boolean neverCompressPictures() {
 786		return getPreferences().getString("picture_compression", getResources().getString(R.string.picture_compression)).equals("never");
 787	}
 788
 789	protected boolean manuallyChangePresence() {
 790		return getPreferences().getBoolean(SettingsActivity.MANUALLY_CHANGE_PRESENCE, getResources().getBoolean(R.bool.manually_change_presence));
 791	}
 792
 793	protected String getShareableUri() {
 794		return getShareableUri(false);
 795	}
 796
 797	protected String getShareableUri(boolean http) {
 798		return null;
 799	}
 800
 801	protected void shareLink(boolean http) {
 802		String uri = getShareableUri(http);
 803		if (uri == null || uri.isEmpty()) {
 804			return;
 805		}
 806		Intent intent = new Intent(Intent.ACTION_SEND);
 807		intent.setType("text/plain");
 808		intent.putExtra(Intent.EXTRA_TEXT, getShareableUri(http));
 809		try {
 810			startActivity(Intent.createChooser(intent, getText(R.string.share_uri_with)));
 811		} catch (ActivityNotFoundException e) {
 812			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 813		}
 814	}
 815
 816	protected void launchOpenKeyChain(long keyId) {
 817		PgpEngine pgp = XmppActivity.this.xmppConnectionService.getPgpEngine();
 818		try {
 819			startIntentSenderForResult(
 820					pgp.getIntentForKey(keyId).getIntentSender(), 0, null, 0,
 821					0, 0);
 822		} catch (Throwable e) {
 823			Toast.makeText(XmppActivity.this, R.string.openpgp_error, Toast.LENGTH_SHORT).show();
 824		}
 825	}
 826
 827	@Override
 828	public void onResume() {
 829		super.onResume();
 830	}
 831
 832	protected int findTheme() {
 833		return ThemeHelper.find(this);
 834	}
 835
 836	@Override
 837	public void onPause() {
 838		super.onPause();
 839	}
 840
 841	@Override
 842	public boolean onMenuOpened(int id, Menu menu) {
 843		if(id == AppCompatDelegate.FEATURE_SUPPORT_ACTION_BAR && menu != null) {
 844			MenuDoubleTabUtil.recordMenuOpen();
 845		}
 846		return super.onMenuOpened(id, menu);
 847	}
 848
 849	protected void showQrCode() {
 850		showQrCode(getShareableUri());
 851	}
 852
 853	protected void showQrCode(final String uri) {
 854		if (uri == null || uri.isEmpty()) {
 855			return;
 856		}
 857		Point size = new Point();
 858		getWindowManager().getDefaultDisplay().getSize(size);
 859		final int width = (size.x < size.y ? size.x : size.y);
 860		Bitmap bitmap = BarcodeProvider.create2dBarcodeBitmap(uri, width);
 861		ImageView view = new ImageView(this);
 862		view.setBackgroundColor(Color.WHITE);
 863		view.setImageBitmap(bitmap);
 864		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 865		builder.setView(view);
 866		builder.create().show();
 867	}
 868
 869	protected Account extractAccount(Intent intent) {
 870		String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
 871		try {
 872			return jid != null ? xmppConnectionService.findAccountByJid(Jid.of(jid)) : null;
 873		} catch (IllegalArgumentException e) {
 874			return null;
 875		}
 876	}
 877
 878	public AvatarService avatarService() {
 879		return xmppConnectionService.getAvatarService();
 880	}
 881
 882	public void loadBitmap(Message message, ImageView imageView) {
 883		Bitmap bm;
 884		try {
 885			bm = xmppConnectionService.getFileBackend().getThumbnail(message, (int) (metrics.density * 288), true);
 886		} catch (FileNotFoundException e) {
 887			bm = null;
 888		}
 889		if (bm != null) {
 890			cancelPotentialWork(message, imageView);
 891			imageView.setImageBitmap(bm);
 892			imageView.setBackgroundColor(0x00000000);
 893		} else {
 894			if (cancelPotentialWork(message, imageView)) {
 895				imageView.setBackgroundColor(0xff333333);
 896				imageView.setImageDrawable(null);
 897				final BitmapWorkerTask task = new BitmapWorkerTask(this, imageView);
 898				final AsyncDrawable asyncDrawable = new AsyncDrawable(
 899						getResources(), null, task);
 900				imageView.setImageDrawable(asyncDrawable);
 901				try {
 902					task.execute(message);
 903				} catch (final RejectedExecutionException ignored) {
 904					ignored.printStackTrace();
 905				}
 906			}
 907		}
 908	}
 909
 910	protected interface OnValueEdited {
 911		String onValueEdited(String value);
 912	}
 913
 914	public static class ConferenceInvite {
 915		private String uuid;
 916		private List<Jid> jids = new ArrayList<>();
 917
 918		public static ConferenceInvite parse(Intent data) {
 919			ConferenceInvite invite = new ConferenceInvite();
 920			invite.uuid = data.getStringExtra("conversation");
 921			if (invite.uuid == null) {
 922				return null;
 923			}
 924			try {
 925				if (data.getBooleanExtra("multiple", false)) {
 926					String[] toAdd = data.getStringArrayExtra("contacts");
 927					for (String item : toAdd) {
 928						invite.jids.add(Jid.of(item));
 929					}
 930				} else {
 931					invite.jids.add(Jid.of(data.getStringExtra("contact")));
 932				}
 933			} catch (final IllegalArgumentException ignored) {
 934				return null;
 935			}
 936			return invite;
 937		}
 938
 939		public boolean execute(XmppActivity activity) {
 940			XmppConnectionService service = activity.xmppConnectionService;
 941			Conversation conversation = service.findConversationByUuid(this.uuid);
 942			if (conversation == null) {
 943				return false;
 944			}
 945			if (conversation.getMode() == Conversation.MODE_MULTI) {
 946				for (Jid jid : jids) {
 947					service.invite(conversation, jid);
 948				}
 949				return false;
 950			} else {
 951				jids.add(conversation.getJid().asBareJid());
 952				return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
 953			}
 954		}
 955	}
 956
 957	static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
 958		private final WeakReference<ImageView> imageViewReference;
 959		private final WeakReference<XmppActivity> activity;
 960		private Message message = null;
 961
 962		private BitmapWorkerTask(XmppActivity activity, ImageView imageView) {
 963			this.activity = new WeakReference<>(activity);
 964			this.imageViewReference = new WeakReference<>(imageView);
 965		}
 966
 967		@Override
 968		protected Bitmap doInBackground(Message... params) {
 969			if (isCancelled()) {
 970				return null;
 971			}
 972			message = params[0];
 973			try {
 974				XmppActivity activity = this.activity.get();
 975				if (activity != null && activity.xmppConnectionService != null) {
 976					return activity.xmppConnectionService.getFileBackend().getThumbnail(message, (int) (activity.metrics.density * 288), false);
 977				} else {
 978					return null;
 979				}
 980			} catch (FileNotFoundException e) {
 981				return null;
 982			}
 983		}
 984
 985		@Override
 986		protected void onPostExecute(Bitmap bitmap) {
 987			if (bitmap != null && !isCancelled()) {
 988				final ImageView imageView = imageViewReference.get();
 989				if (imageView != null) {
 990					imageView.setImageBitmap(bitmap);
 991					imageView.setBackgroundColor(0x00000000);
 992				}
 993			}
 994		}
 995	}
 996
 997	private static class AsyncDrawable extends BitmapDrawable {
 998		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
 999
1000		private AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1001			super(res, bitmap);
1002			bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1003		}
1004
1005		private BitmapWorkerTask getBitmapWorkerTask() {
1006			return bitmapWorkerTaskReference.get();
1007		}
1008	}
1009}