XmppActivity.java

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