XmppActivity.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.NotificationManager;
   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.ContextWrapper;
  13import android.content.DialogInterface;
  14import android.content.Intent;
  15import android.content.IntentSender.SendIntentException;
  16import android.content.ServiceConnection;
  17import android.content.SharedPreferences;
  18import android.content.pm.PackageManager;
  19import android.content.res.Resources;
  20import android.graphics.Bitmap;
  21import android.graphics.Point;
  22import android.graphics.drawable.BitmapDrawable;
  23import android.graphics.drawable.Drawable;
  24import android.net.ConnectivityManager;
  25import android.net.Uri;
  26import android.os.AsyncTask;
  27import android.os.Build;
  28import android.os.Bundle;
  29import android.os.Handler;
  30import android.os.IBinder;
  31import android.os.PowerManager;
  32import android.os.SystemClock;
  33import android.preference.PreferenceManager;
  34import android.provider.Settings;
  35import android.text.Html;
  36import android.text.InputType;
  37import android.util.DisplayMetrics;
  38import android.util.Log;
  39import android.view.Menu;
  40import android.view.MenuItem;
  41import android.view.View;
  42import android.widget.Button;
  43import android.widget.CheckBox;
  44import android.widget.ImageView;
  45import android.widget.Toast;
  46import androidx.annotation.BoolRes;
  47import androidx.annotation.NonNull;
  48import androidx.annotation.RequiresApi;
  49import androidx.annotation.StringRes;
  50import androidx.appcompat.app.AlertDialog;
  51import androidx.appcompat.app.AppCompatDelegate;
  52import androidx.core.content.pm.ShortcutInfoCompat;
  53import androidx.core.content.pm.ShortcutManagerCompat;
  54import androidx.databinding.DataBindingUtil;
  55import com.google.android.material.color.MaterialColors;
  56import com.google.android.material.dialog.MaterialAlertDialogBuilder;
  57import com.google.common.base.Strings;
  58import com.google.common.collect.ImmutableSet;
  59import com.google.common.util.concurrent.FutureCallback;
  60import com.google.common.util.concurrent.Futures;
  61import com.google.common.util.concurrent.MoreExecutors;
  62import eu.siacs.conversations.AppSettings;
  63import eu.siacs.conversations.BuildConfig;
  64import eu.siacs.conversations.Config;
  65import eu.siacs.conversations.R;
  66import eu.siacs.conversations.crypto.PgpEngine;
  67import eu.siacs.conversations.databinding.DialogAddReactionBinding;
  68import eu.siacs.conversations.databinding.DialogQuickeditBinding;
  69import eu.siacs.conversations.entities.Account;
  70import eu.siacs.conversations.entities.Contact;
  71import eu.siacs.conversations.entities.Conversation;
  72import eu.siacs.conversations.entities.Message;
  73import eu.siacs.conversations.entities.Presences;
  74import eu.siacs.conversations.entities.Reaction;
  75import eu.siacs.conversations.services.AvatarService;
  76import eu.siacs.conversations.services.BarcodeProvider;
  77import eu.siacs.conversations.services.NotificationService;
  78import eu.siacs.conversations.services.QuickConversationsService;
  79import eu.siacs.conversations.services.XmppConnectionService;
  80import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  81import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  82import eu.siacs.conversations.ui.util.PresenceSelector;
  83import eu.siacs.conversations.ui.util.SettingsUtils;
  84import eu.siacs.conversations.ui.util.SoftKeyboardUtils;
  85import eu.siacs.conversations.utils.AccountUtils;
  86import eu.siacs.conversations.utils.Compatibility;
  87import eu.siacs.conversations.utils.SignupUtils;
  88import eu.siacs.conversations.xmpp.Jid;
  89import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  90import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  91import eu.siacs.conversations.xmpp.manager.PresenceManager;
  92import eu.siacs.conversations.xmpp.manager.RegistrationManager;
  93import java.io.IOException;
  94import java.lang.ref.WeakReference;
  95import java.util.ArrayList;
  96import java.util.Collection;
  97import java.util.List;
  98import java.util.concurrent.RejectedExecutionException;
  99import java.util.function.Consumer;
 100
 101public abstract class XmppActivity extends ActionBarActivity {
 102
 103    public static final String EXTRA_ACCOUNT = "account";
 104    protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
 105    protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
 106    protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
 107    protected static final int REQUEST_BATTERY_OP = 0x49ff;
 108    protected static final int REQUEST_POST_NOTIFICATION = 0x50ff;
 109    public XmppConnectionService xmppConnectionService;
 110    public boolean xmppConnectionServiceBound = false;
 111
 112    protected static final String FRAGMENT_TAG_DIALOG = "dialog";
 113
 114    private boolean isCameraFeatureAvailable = false;
 115
 116    protected boolean mUsingEnterKey = false;
 117    protected boolean mUseTor = false;
 118    protected Toast mToast;
 119    public Runnable onOpenPGPKeyPublished =
 120            () ->
 121                    Toast.makeText(
 122                                    XmppActivity.this,
 123                                    R.string.openpgp_has_been_published,
 124                                    Toast.LENGTH_SHORT)
 125                            .show();
 126    protected ConferenceInvite mPendingConferenceInvite = null;
 127    protected ServiceConnection mConnection =
 128            new ServiceConnection() {
 129
 130                @Override
 131                public void onServiceConnected(ComponentName className, IBinder service) {
 132                    XmppConnectionBinder binder = (XmppConnectionBinder) service;
 133                    xmppConnectionService = binder.getService();
 134                    xmppConnectionServiceBound = true;
 135                    registerListeners();
 136                    onBackendConnected();
 137                }
 138
 139                @Override
 140                public void onServiceDisconnected(ComponentName arg0) {
 141                    xmppConnectionServiceBound = false;
 142                }
 143            };
 144    private DisplayMetrics metrics;
 145    private long mLastUiRefresh = 0;
 146    private final Handler mRefreshUiHandler = new Handler();
 147    private final Runnable mRefreshUiRunnable =
 148            () -> {
 149                mLastUiRefresh = SystemClock.elapsedRealtime();
 150                refreshUiReal();
 151            };
 152    private final UiCallback<Conversation> adhocCallback =
 153            new UiCallback<Conversation>() {
 154                @Override
 155                public void success(final Conversation conversation) {
 156                    runOnUiThread(
 157                            () -> {
 158                                switchToConversation(conversation);
 159                                hideToast();
 160                            });
 161                }
 162
 163                @Override
 164                public void error(final int errorCode, Conversation object) {
 165                    runOnUiThread(() -> replaceToast(getString(errorCode)));
 166                }
 167
 168                @Override
 169                public void userInputRequired(PendingIntent pi, Conversation object) {}
 170            };
 171
 172    public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 173        final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 174
 175        if (bitmapWorkerTask != null) {
 176            final Message oldMessage = bitmapWorkerTask.message;
 177            if (oldMessage == null || message != oldMessage) {
 178                bitmapWorkerTask.cancel(true);
 179            } else {
 180                return false;
 181            }
 182        }
 183        return true;
 184    }
 185
 186    private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 187        if (imageView != null) {
 188            final Drawable drawable = imageView.getDrawable();
 189            if (drawable instanceof AsyncDrawable asyncDrawable) {
 190                return asyncDrawable.getBitmapWorkerTask();
 191            }
 192        }
 193        return null;
 194    }
 195
 196    protected void hideToast() {
 197        final var toast = this.mToast;
 198        if (toast == null) {
 199            return;
 200        }
 201        toast.cancel();
 202    }
 203
 204    protected void replaceToast(String msg) {
 205        replaceToast(msg, true);
 206    }
 207
 208    protected void replaceToast(String msg, boolean showlong) {
 209        hideToast();
 210        mToast = Toast.makeText(this, msg, showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 211        mToast.show();
 212    }
 213
 214    protected final void refreshUi() {
 215        final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 216        if (diff > Config.REFRESH_UI_INTERVAL) {
 217            mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 218            runOnUiThread(mRefreshUiRunnable);
 219        } else {
 220            final long next = Config.REFRESH_UI_INTERVAL - diff;
 221            mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 222            mRefreshUiHandler.postDelayed(mRefreshUiRunnable, next);
 223        }
 224    }
 225
 226    protected abstract void refreshUiReal();
 227
 228    @Override
 229    public void onStart() {
 230        super.onStart();
 231        if (!xmppConnectionServiceBound) {
 232            connectToBackend();
 233        } else {
 234            this.registerListeners();
 235            this.onBackendConnected();
 236        }
 237        this.mUsingEnterKey = usingEnterKey();
 238        this.mUseTor = useTor();
 239    }
 240
 241    public void connectToBackend() {
 242        Intent intent = new Intent(this, XmppConnectionService.class);
 243        intent.setAction("ui");
 244        try {
 245            startService(intent);
 246        } catch (IllegalStateException e) {
 247            Log.w(Config.LOGTAG, "unable to start service from " + getClass().getSimpleName());
 248        }
 249        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 250    }
 251
 252    @Override
 253    protected void onStop() {
 254        super.onStop();
 255        if (xmppConnectionServiceBound) {
 256            this.unregisterListeners();
 257            unbindService(mConnection);
 258            xmppConnectionServiceBound = false;
 259        }
 260    }
 261
 262    @RequiresApi(api = Build.VERSION_CODES.R)
 263    protected void configureCustomNotification(final ShortcutInfoCompat shortcut) {
 264        final var notificationManager = getSystemService(NotificationManager.class);
 265        final var channel =
 266                notificationManager.getNotificationChannel(
 267                        NotificationService.MESSAGES_NOTIFICATION_CHANNEL, shortcut.getId());
 268        if (channel != null && channel.getConversationId() != null) {
 269            ShortcutManagerCompat.pushDynamicShortcut(this, shortcut);
 270            openNotificationSettings(shortcut);
 271        } else {
 272            new MaterialAlertDialogBuilder(this)
 273                    .setTitle(R.string.custom_notifications)
 274                    .setMessage(R.string.custom_notifications_enable)
 275                    .setPositiveButton(
 276                            R.string.continue_btn,
 277                            (d, w) -> {
 278                                NotificationService.createConversationChannel(this, shortcut);
 279                                ShortcutManagerCompat.pushDynamicShortcut(this, shortcut);
 280                                openNotificationSettings(shortcut);
 281                            })
 282                    .setNegativeButton(R.string.cancel, null)
 283                    .create()
 284                    .show();
 285        }
 286    }
 287
 288    @RequiresApi(api = Build.VERSION_CODES.R)
 289    protected void openNotificationSettings(final ShortcutInfoCompat shortcut) {
 290        final var intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);
 291        intent.putExtra(Settings.EXTRA_APP_PACKAGE, getPackageName());
 292        intent.putExtra(
 293                Settings.EXTRA_CHANNEL_ID, NotificationService.MESSAGES_NOTIFICATION_CHANNEL);
 294        intent.putExtra(Settings.EXTRA_CONVERSATION_ID, shortcut.getId());
 295        startActivity(intent);
 296    }
 297
 298    public boolean hasPgp() {
 299        return xmppConnectionService.getPgpEngine() != null;
 300    }
 301
 302    public void showInstallPgpDialog() {
 303        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 304        builder.setTitle(getString(R.string.openkeychain_required));
 305        builder.setIconAttribute(android.R.attr.alertDialogIcon);
 306        builder.setMessage(
 307                Html.fromHtml(
 308                        getString(
 309                                R.string.openkeychain_required_long,
 310                                getString(R.string.app_name))));
 311        builder.setNegativeButton(getString(R.string.cancel), null);
 312        builder.setNeutralButton(
 313                getString(R.string.restart),
 314                (dialog, which) -> {
 315                    if (xmppConnectionServiceBound) {
 316                        unbindService(mConnection);
 317                        xmppConnectionServiceBound = false;
 318                    }
 319                    stopService(new Intent(XmppActivity.this, XmppConnectionService.class));
 320                    finish();
 321                });
 322        builder.setPositiveButton(
 323                getString(R.string.install),
 324                (dialog, which) -> {
 325                    final Uri uri =
 326                            Uri.parse("market://details?id=org.sufficientlysecure.keychain");
 327                    Intent marketIntent = new Intent(Intent.ACTION_VIEW, uri);
 328                    PackageManager manager = getApplicationContext().getPackageManager();
 329                    final var infos = manager.queryIntentActivities(marketIntent, 0);
 330                    if (infos.isEmpty()) {
 331                        final var website = Uri.parse("http://www.openkeychain.org/");
 332                        final Intent browserIntent = new Intent(Intent.ACTION_VIEW, website);
 333                        try {
 334                            startActivity(browserIntent);
 335                        } catch (final ActivityNotFoundException e) {
 336                            Toast.makeText(
 337                                            this,
 338                                            R.string.application_found_to_open_website,
 339                                            Toast.LENGTH_LONG)
 340                                    .show();
 341                        }
 342                    } else {
 343                        startActivity(marketIntent);
 344                    }
 345                    finish();
 346                });
 347        builder.create().show();
 348    }
 349
 350    public void addReaction(final Message message, Consumer<Collection<String>> callback) {
 351        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 352        final var layoutInflater = this.getLayoutInflater();
 353        final DialogAddReactionBinding viewBinding =
 354                DataBindingUtil.inflate(layoutInflater, R.layout.dialog_add_reaction, null, false);
 355        builder.setView(viewBinding.getRoot());
 356        final var dialog = builder.create();
 357        for (final String emoji : Reaction.SUGGESTIONS) {
 358            final Button button =
 359                    (Button)
 360                            layoutInflater.inflate(
 361                                    R.layout.item_emoji_button, viewBinding.emojis, false);
 362            viewBinding.emojis.addView(button);
 363            button.setText(emoji);
 364            button.setOnClickListener(
 365                    v -> {
 366                        final var aggregated = message.getAggregatedReactions();
 367                        if (aggregated.ourReactions.contains(emoji)) {
 368                            callback.accept(aggregated.ourReactions);
 369                        } else {
 370                            final ImmutableSet.Builder<String> reactionBuilder =
 371                                    new ImmutableSet.Builder<>();
 372                            reactionBuilder.addAll(aggregated.ourReactions);
 373                            reactionBuilder.add(emoji);
 374                            callback.accept(reactionBuilder.build());
 375                        }
 376                        dialog.dismiss();
 377                    });
 378        }
 379        viewBinding.more.setOnClickListener(
 380                v -> {
 381                    dialog.dismiss();
 382                    final var intent = new Intent(this, AddReactionActivity.class);
 383                    intent.putExtra("conversation", message.getConversation().getUuid());
 384                    intent.putExtra("message", message.getUuid());
 385                    startActivity(intent);
 386                });
 387        dialog.show();
 388    }
 389
 390    protected void deleteAccount(final Account account) {
 391        this.deleteAccount(account, null);
 392    }
 393
 394    protected void deleteAccount(final Account account, final Runnable postDelete) {
 395        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 396        final View dialogView = getLayoutInflater().inflate(R.layout.dialog_delete_account, null);
 397        builder.setView(dialogView);
 398        builder.setTitle(R.string.mgmt_account_delete);
 399        builder.setPositiveButton(getString(R.string.delete), null);
 400        builder.setNegativeButton(getString(R.string.cancel), null);
 401        final AlertDialog dialog = builder.create();
 402        dialog.setOnShowListener(
 403                dialogInterface -> onShowDeleteDialog(dialogInterface, account, postDelete));
 404        dialog.show();
 405    }
 406
 407    private void onShowDeleteDialog(
 408            final DialogInterface dialogInterface,
 409            final Account account,
 410            final Runnable postDelete) {
 411        final AlertDialog alertDialog;
 412        if (dialogInterface instanceof AlertDialog dialog) {
 413            alertDialog = dialog;
 414        } else {
 415            throw new IllegalStateException("DialogInterface was not of type AlertDialog");
 416        }
 417        final var button = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
 418        button.setOnClickListener(
 419                v -> onDeleteDialogButtonClicked(alertDialog, account, postDelete));
 420    }
 421
 422    private void onDeleteDialogButtonClicked(
 423            final AlertDialog dialog, final Account account, final Runnable postDelete) {
 424        final CheckBox deleteFromServer = dialog.findViewById(R.id.delete_from_server);
 425        if (deleteFromServer == null) {
 426            throw new IllegalStateException("AlertDialog did not have button");
 427        }
 428        final var button = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
 429        final boolean unregister = deleteFromServer.isChecked();
 430        if (unregister) {
 431            if (account.isOnlineAndConnected()) {
 432                final var connection = account.getXmppConnection();
 433                deleteFromServer.setEnabled(false);
 434                button.setText(R.string.please_wait);
 435                button.setEnabled(false);
 436                final var future = connection.getManager(RegistrationManager.class).unregister();
 437                Futures.addCallback(
 438                        future,
 439                        new FutureCallback<>() {
 440                            @Override
 441                            public void onSuccess(Void result) {
 442                                runOnUiThread(
 443                                        () -> onAccountDeletedSuccess(account, dialog, postDelete));
 444                            }
 445
 446                            @Override
 447                            public void onFailure(@NonNull Throwable t) {
 448                                Log.d(Config.LOGTAG, "could not unregister account", t);
 449                                runOnUiThread(() -> onAccountDeletionFailure(dialog, postDelete));
 450                            }
 451                        },
 452                        MoreExecutors.directExecutor());
 453            } else {
 454                Toast.makeText(this, R.string.not_connected_try_again, Toast.LENGTH_LONG).show();
 455            }
 456        } else {
 457            onAccountDeletedSuccess(account, dialog, postDelete);
 458        }
 459    }
 460
 461    private void onAccountDeletedSuccess(
 462            final Account account, final AlertDialog dialog, final Runnable postDelete) {
 463        xmppConnectionService.deleteAccount(account);
 464        dialog.dismiss();
 465        if (xmppConnectionService.getAccounts().isEmpty() && Config.MAGIC_CREATE_DOMAIN != null) {
 466            final Intent intent = SignupUtils.getSignUpIntent(this);
 467            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
 468            startActivity(intent);
 469        } else if (postDelete != null) {
 470            postDelete.run();
 471        }
 472    }
 473
 474    private void onAccountDeletionFailure(final AlertDialog dialog, final Runnable postDelete) {
 475        final CheckBox deleteFromServer = dialog.findViewById(R.id.delete_from_server);
 476        if (deleteFromServer == null) {
 477            throw new IllegalStateException("AlertDialog did not have button");
 478        }
 479        final var button = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
 480        deleteFromServer.setEnabled(true);
 481        button.setText(R.string.delete);
 482        button.setEnabled(true);
 483        Toast.makeText(this, R.string.could_not_delete_account_from_server, Toast.LENGTH_LONG)
 484                .show();
 485    }
 486
 487    protected abstract void onBackendConnected();
 488
 489    protected void registerListeners() {
 490        if (this instanceof XmppConnectionService.OnConversationUpdate) {
 491            this.xmppConnectionService.setOnConversationListChangedListener(
 492                    (XmppConnectionService.OnConversationUpdate) this);
 493        }
 494        if (this instanceof XmppConnectionService.OnAccountUpdate) {
 495            this.xmppConnectionService.setOnAccountListChangedListener(
 496                    (XmppConnectionService.OnAccountUpdate) this);
 497        }
 498        if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 499            this.xmppConnectionService.setOnCaptchaRequestedListener(
 500                    (XmppConnectionService.OnCaptchaRequested) this);
 501        }
 502        if (this instanceof XmppConnectionService.OnRosterUpdate) {
 503            this.xmppConnectionService.setOnRosterUpdateListener(
 504                    (XmppConnectionService.OnRosterUpdate) this);
 505        }
 506        if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 507            this.xmppConnectionService.setOnMucRosterUpdateListener(
 508                    (XmppConnectionService.OnMucRosterUpdate) this);
 509        }
 510        if (this instanceof OnUpdateBlocklist) {
 511            this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 512        }
 513        if (this instanceof XmppConnectionService.OnShowErrorToast) {
 514            this.xmppConnectionService.setOnShowErrorToastListener(
 515                    (XmppConnectionService.OnShowErrorToast) this);
 516        }
 517        if (this instanceof OnKeyStatusUpdated) {
 518            this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 519        }
 520        if (this instanceof XmppConnectionService.OnJingleRtpConnectionUpdate) {
 521            this.xmppConnectionService.setOnRtpConnectionUpdateListener(
 522                    (XmppConnectionService.OnJingleRtpConnectionUpdate) this);
 523        }
 524    }
 525
 526    protected void unregisterListeners() {
 527        if (this instanceof XmppConnectionService.OnConversationUpdate) {
 528            this.xmppConnectionService.removeOnConversationListChangedListener(
 529                    (XmppConnectionService.OnConversationUpdate) this);
 530        }
 531        if (this instanceof XmppConnectionService.OnAccountUpdate) {
 532            this.xmppConnectionService.removeOnAccountListChangedListener(
 533                    (XmppConnectionService.OnAccountUpdate) this);
 534        }
 535        if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 536            this.xmppConnectionService.removeOnCaptchaRequestedListener(
 537                    (XmppConnectionService.OnCaptchaRequested) this);
 538        }
 539        if (this instanceof XmppConnectionService.OnRosterUpdate) {
 540            this.xmppConnectionService.removeOnRosterUpdateListener(
 541                    (XmppConnectionService.OnRosterUpdate) this);
 542        }
 543        if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 544            this.xmppConnectionService.removeOnMucRosterUpdateListener(
 545                    (XmppConnectionService.OnMucRosterUpdate) this);
 546        }
 547        if (this instanceof OnUpdateBlocklist) {
 548            this.xmppConnectionService.removeOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 549        }
 550        if (this instanceof XmppConnectionService.OnShowErrorToast) {
 551            this.xmppConnectionService.removeOnShowErrorToastListener(
 552                    (XmppConnectionService.OnShowErrorToast) this);
 553        }
 554        if (this instanceof OnKeyStatusUpdated) {
 555            this.xmppConnectionService.removeOnNewKeysAvailableListener((OnKeyStatusUpdated) this);
 556        }
 557        if (this instanceof XmppConnectionService.OnJingleRtpConnectionUpdate) {
 558            this.xmppConnectionService.removeRtpConnectionUpdateListener(
 559                    (XmppConnectionService.OnJingleRtpConnectionUpdate) this);
 560        }
 561    }
 562
 563    @Override
 564    public boolean onOptionsItemSelected(final MenuItem item) {
 565        switch (item.getItemId()) {
 566            case R.id.action_settings:
 567                startActivity(
 568                        new Intent(
 569                                this, eu.siacs.conversations.ui.activity.SettingsActivity.class));
 570                break;
 571            case R.id.action_privacy_policy:
 572                openPrivacyPolicy();
 573                break;
 574            case R.id.action_accounts:
 575                AccountUtils.launchManageAccounts(this);
 576                break;
 577            case R.id.action_account:
 578                AccountUtils.launchManageAccount(this);
 579                break;
 580            case android.R.id.home:
 581                finish();
 582                break;
 583            case R.id.action_show_qr_code:
 584                showQrCode();
 585                break;
 586        }
 587        return super.onOptionsItemSelected(item);
 588    }
 589
 590    private void openPrivacyPolicy() {
 591        if (BuildConfig.PRIVACY_POLICY == null) {
 592            return;
 593        }
 594        final var viewPolicyIntent = new Intent(Intent.ACTION_VIEW);
 595        viewPolicyIntent.setData(Uri.parse(BuildConfig.PRIVACY_POLICY));
 596        try {
 597            startActivity(viewPolicyIntent);
 598        } catch (final ActivityNotFoundException e) {
 599            Toast.makeText(this, R.string.no_application_found_to_open_link, Toast.LENGTH_SHORT)
 600                    .show();
 601        }
 602    }
 603
 604    public void selectPresence(
 605            final Conversation conversation, final PresenceSelector.OnPresenceSelected listener) {
 606        final Contact contact = conversation.getContact();
 607        if (contact.showInRoster() || contact.isSelf()) {
 608            final Presences presences = contact.getPresences();
 609            if (presences.size() == 0) {
 610                if (contact.isSelf()) {
 611                    conversation.setNextCounterpart(null);
 612                    listener.onPresenceSelected();
 613                } else if (!contact.getOption(Contact.Options.TO)
 614                        && !contact.getOption(Contact.Options.ASKING)
 615                        && contact.getAccount().getStatus() == Account.State.ONLINE) {
 616                    showAskForPresenceDialog(contact);
 617                } else if (!contact.getOption(Contact.Options.TO)
 618                        || !contact.getOption(Contact.Options.FROM)) {
 619                    PresenceSelector.warnMutualPresenceSubscription(this, conversation, listener);
 620                } else {
 621                    conversation.setNextCounterpart(null);
 622                    listener.onPresenceSelected();
 623                }
 624            } else if (presences.size() == 1) {
 625                final String presence = presences.toResourceArray()[0];
 626                conversation.setNextCounterpart(
 627                        PresenceSelector.getNextCounterpart(contact, presence));
 628                listener.onPresenceSelected();
 629            } else {
 630                PresenceSelector.showPresenceSelectionDialog(this, conversation, listener);
 631            }
 632        } else {
 633            showAddToRosterDialog(conversation.getContact());
 634        }
 635    }
 636
 637    @SuppressLint("UnsupportedChromeOsCameraSystemFeature")
 638    @Override
 639    protected void onCreate(Bundle savedInstanceState) {
 640        super.onCreate(savedInstanceState);
 641        metrics = getResources().getDisplayMetrics();
 642        this.isCameraFeatureAvailable =
 643                getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
 644    }
 645
 646    protected boolean isCameraFeatureAvailable() {
 647        return this.isCameraFeatureAvailable;
 648    }
 649
 650    protected boolean isOptimizingBattery() {
 651        final PowerManager pm = getSystemService(PowerManager.class);
 652        return !pm.isIgnoringBatteryOptimizations(getPackageName());
 653    }
 654
 655    protected boolean isAffectedByDataSaver() {
 656        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 657            final ConnectivityManager cm =
 658                    (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 659            return cm != null
 660                    && cm.isActiveNetworkMetered()
 661                    && Compatibility.getRestrictBackgroundStatus(cm)
 662                            == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 663        } else {
 664            return false;
 665        }
 666    }
 667
 668    private boolean usingEnterKey() {
 669        return getBooleanPreference("display_enter_key", R.bool.display_enter_key);
 670    }
 671
 672    private boolean useTor() {
 673        return QuickConversationsService.isConversations()
 674                && getBooleanPreference("use_tor", R.bool.use_tor);
 675    }
 676
 677    protected SharedPreferences getPreferences() {
 678        return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 679    }
 680
 681    protected boolean getBooleanPreference(String name, @BoolRes int res) {
 682        return getPreferences().getBoolean(name, getResources().getBoolean(res));
 683    }
 684
 685    public void switchToConversation(Conversation conversation) {
 686        switchToConversation(conversation, null);
 687    }
 688
 689    public void switchToConversationAndQuote(Conversation conversation, String text) {
 690        switchToConversation(conversation, text, true, null, false, false);
 691    }
 692
 693    public void switchToConversation(Conversation conversation, String text) {
 694        switchToConversation(conversation, text, false, null, false, false);
 695    }
 696
 697    public void switchToConversationDoNotAppend(Conversation conversation, String text) {
 698        switchToConversation(conversation, text, false, null, false, true);
 699    }
 700
 701    public void highlightInMuc(Conversation conversation, String nick) {
 702        switchToConversation(conversation, null, false, nick, false, false);
 703    }
 704
 705    public void privateMsgInMuc(Conversation conversation, String nick) {
 706        switchToConversation(conversation, null, false, nick, true, false);
 707    }
 708
 709    private void switchToConversation(
 710            Conversation conversation,
 711            String text,
 712            boolean asQuote,
 713            String nick,
 714            boolean pm,
 715            boolean doNotAppend) {
 716        Intent intent = new Intent(this, ConversationsActivity.class);
 717        intent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
 718        intent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, conversation.getUuid());
 719        if (text != null) {
 720            intent.putExtra(Intent.EXTRA_TEXT, text);
 721            if (asQuote) {
 722                intent.putExtra(ConversationsActivity.EXTRA_AS_QUOTE, true);
 723            }
 724        }
 725        if (nick != null) {
 726            intent.putExtra(ConversationsActivity.EXTRA_NICK, nick);
 727            intent.putExtra(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, pm);
 728        }
 729        if (doNotAppend) {
 730            intent.putExtra(ConversationsActivity.EXTRA_DO_NOT_APPEND, true);
 731        }
 732        intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP);
 733        startActivity(intent);
 734        finish();
 735    }
 736
 737    public void switchToContactDetails(Contact contact) {
 738        switchToContactDetails(contact, null);
 739    }
 740
 741    public void switchToContactDetails(Contact contact, String messageFingerprint) {
 742        Intent intent = new Intent(this, ContactDetailsActivity.class);
 743        intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 744        intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().asBareJid().toString());
 745        intent.putExtra("contact", contact.getJid().toString());
 746        intent.putExtra("fingerprint", messageFingerprint);
 747        startActivity(intent);
 748    }
 749
 750    public void switchToAccount(Account account, String fingerprint) {
 751        switchToAccount(account, false, fingerprint);
 752    }
 753
 754    public void switchToAccount(Account account) {
 755        switchToAccount(account, false, null);
 756    }
 757
 758    public void switchToAccount(Account account, boolean init, String fingerprint) {
 759        Intent intent = new Intent(this, EditAccountActivity.class);
 760        intent.putExtra("jid", account.getJid().asBareJid().toString());
 761        intent.putExtra("init", init);
 762        if (init) {
 763            intent.setFlags(
 764                    Intent.FLAG_ACTIVITY_NEW_TASK
 765                            | Intent.FLAG_ACTIVITY_CLEAR_TASK
 766                            | Intent.FLAG_ACTIVITY_NO_ANIMATION);
 767        }
 768        if (fingerprint != null) {
 769            intent.putExtra("fingerprint", fingerprint);
 770        }
 771        startActivity(intent);
 772        if (init) {
 773            overridePendingTransition(0, 0);
 774        }
 775    }
 776
 777    protected void delegateUriPermissionsToService(Uri uri) {
 778        Intent intent = new Intent(this, XmppConnectionService.class);
 779        intent.setAction(Intent.ACTION_SEND);
 780        intent.setData(uri);
 781        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 782        try {
 783            startService(intent);
 784        } catch (Exception e) {
 785            Log.e(Config.LOGTAG, "unable to delegate uri permission", e);
 786        }
 787    }
 788
 789    protected void inviteToConversation(Conversation conversation) {
 790        startActivityForResult(
 791                ChooseContactActivity.create(this, conversation), REQUEST_INVITE_TO_CONVERSATION);
 792    }
 793
 794    protected void announcePgp(
 795            final Account account,
 796            final Conversation conversation,
 797            Intent intent,
 798            final Runnable onSuccess) {
 799        if (account.getPgpId() == 0) {
 800            choosePgpSignId(account);
 801        } else {
 802            final String status = Strings.nullToEmpty(account.getPresenceStatusMessage());
 803            xmppConnectionService
 804                    .getPgpEngine()
 805                    .generateSignature(
 806                            intent,
 807                            account,
 808                            status,
 809                            new UiCallback<String>() {
 810
 811                                @Override
 812                                public void userInputRequired(
 813                                        final PendingIntent pi, final String signature) {
 814                                    try {
 815                                        startIntentSenderForResult(
 816                                                pi.getIntentSender(),
 817                                                REQUEST_ANNOUNCE_PGP,
 818                                                null,
 819                                                0,
 820                                                0,
 821                                                0,
 822                                                Compatibility.pgpStartIntentSenderOptions());
 823                                    } catch (final SendIntentException ignored) {
 824                                    }
 825                                }
 826
 827                                @Override
 828                                public void success(String signature) {
 829                                    account.setPgpSignature(signature);
 830                                    xmppConnectionService.databaseBackend.updateAccount(account);
 831                                    xmppConnectionService.sendPresence(account);
 832                                    if (conversation != null) {
 833                                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 834                                        xmppConnectionService.updateConversation(conversation);
 835                                        refreshUi();
 836                                    }
 837                                    if (onSuccess != null) {
 838                                        runOnUiThread(onSuccess);
 839                                    }
 840                                }
 841
 842                                @Override
 843                                public void error(int error, String signature) {
 844                                    if (error == 0) {
 845                                        account.setPgpSignId(0);
 846                                        account.unsetPgpSignature();
 847                                        xmppConnectionService.databaseBackend.updateAccount(
 848                                                account);
 849                                        choosePgpSignId(account);
 850                                    } else {
 851                                        displayErrorDialog(error);
 852                                    }
 853                                }
 854                            });
 855        }
 856    }
 857
 858    protected void choosePgpSignId(final Account account) {
 859        xmppConnectionService
 860                .getPgpEngine()
 861                .chooseKey(
 862                        account,
 863                        new UiCallback<>() {
 864                            @Override
 865                            public void success(final Account a) {}
 866
 867                            @Override
 868                            public void error(int errorCode, Account object) {}
 869
 870                            @Override
 871                            public void userInputRequired(PendingIntent pi, Account object) {
 872                                try {
 873                                    startIntentSenderForResult(
 874                                            pi.getIntentSender(),
 875                                            REQUEST_CHOOSE_PGP_ID,
 876                                            null,
 877                                            0,
 878                                            0,
 879                                            0,
 880                                            Compatibility.pgpStartIntentSenderOptions());
 881                                } catch (final SendIntentException ignored) {
 882                                }
 883                            }
 884                        });
 885    }
 886
 887    protected void displayErrorDialog(final int errorCode) {
 888        runOnUiThread(
 889                () -> {
 890                    final MaterialAlertDialogBuilder builder =
 891                            new MaterialAlertDialogBuilder(XmppActivity.this);
 892                    builder.setTitle(getString(R.string.error));
 893                    builder.setMessage(errorCode);
 894                    builder.setNeutralButton(R.string.accept, null);
 895                    builder.create().show();
 896                });
 897    }
 898
 899    protected void showAddToRosterDialog(final Contact contact) {
 900        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 901        builder.setTitle(contact.getJid().toString());
 902        builder.setMessage(getString(R.string.not_in_roster));
 903        builder.setNegativeButton(getString(R.string.cancel), null);
 904        builder.setPositiveButton(
 905                getString(R.string.add_contact),
 906                (dialog, which) -> xmppConnectionService.createContact(contact));
 907        builder.create().show();
 908    }
 909
 910    private void showAskForPresenceDialog(final Contact contact) {
 911        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 912        builder.setTitle(contact.getJid().toString());
 913        builder.setMessage(R.string.request_presence_updates);
 914        builder.setNegativeButton(R.string.cancel, null);
 915        builder.setPositiveButton(
 916                R.string.request_now,
 917                (dialog, which) -> {
 918                    final var connection = contact.getAccount().getXmppConnection();
 919                    connection
 920                            .getManager(PresenceManager.class)
 921                            .subscribe(contact.getJid().asBareJid());
 922                });
 923        builder.create().show();
 924    }
 925
 926    protected void quickEdit(String previousValue, @StringRes int hint, OnValueEdited callback) {
 927        quickEdit(previousValue, callback, hint, false, false);
 928    }
 929
 930    protected void quickEdit(
 931            String previousValue,
 932            @StringRes int hint,
 933            OnValueEdited callback,
 934            boolean permitEmpty) {
 935        quickEdit(previousValue, callback, hint, false, permitEmpty);
 936    }
 937
 938    protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 939        quickEdit(previousValue, callback, R.string.password, true, false);
 940    }
 941
 942    @SuppressLint("InflateParams")
 943    private void quickEdit(
 944            final String previousValue,
 945            final OnValueEdited callback,
 946            final @StringRes int hint,
 947            boolean password,
 948            boolean permitEmpty) {
 949        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
 950        final DialogQuickeditBinding binding =
 951                DataBindingUtil.inflate(
 952                        getLayoutInflater(), R.layout.dialog_quickedit, null, false);
 953        if (password) {
 954            binding.inputEditText.setInputType(
 955                    InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 956        }
 957        builder.setPositiveButton(R.string.accept, null);
 958        if (hint != 0) {
 959            binding.inputLayout.setHint(getString(hint));
 960        }
 961        binding.inputEditText.requestFocus();
 962        if (previousValue != null) {
 963            binding.inputEditText.getText().append(previousValue);
 964        }
 965        builder.setView(binding.getRoot());
 966        builder.setNegativeButton(R.string.cancel, null);
 967        final AlertDialog dialog = builder.create();
 968        dialog.setOnShowListener(d -> SoftKeyboardUtils.showKeyboard(binding.inputEditText));
 969        dialog.show();
 970        View.OnClickListener clickListener =
 971                v -> {
 972                    String value = binding.inputEditText.getText().toString();
 973                    if (!value.equals(previousValue) && (!value.trim().isEmpty() || permitEmpty)) {
 974                        String error = callback.onValueEdited(value);
 975                        if (error != null) {
 976                            binding.inputLayout.setError(error);
 977                            return;
 978                        }
 979                    }
 980                    SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 981                    dialog.dismiss();
 982                };
 983        dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(clickListener);
 984        dialog.getButton(DialogInterface.BUTTON_NEGATIVE)
 985                .setOnClickListener(
 986                        (v -> {
 987                            SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 988                            dialog.dismiss();
 989                        }));
 990        dialog.setCanceledOnTouchOutside(false);
 991        dialog.setOnDismissListener(
 992                dialog1 -> {
 993                    SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 994                });
 995    }
 996
 997    protected boolean hasStoragePermission(int requestCode) {
 998        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
 999            if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
1000                    != PackageManager.PERMISSION_GRANTED) {
1001                requestPermissions(
1002                        new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1003                return false;
1004            } else {
1005                return true;
1006            }
1007        } else {
1008            return true;
1009        }
1010    }
1011
1012    protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
1013        super.onActivityResult(requestCode, resultCode, data);
1014        if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
1015            mPendingConferenceInvite = ConferenceInvite.parse(data);
1016            if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
1017                if (mPendingConferenceInvite.execute(this)) {
1018                    mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
1019                    mToast.show();
1020                }
1021                mPendingConferenceInvite = null;
1022            }
1023        }
1024    }
1025
1026    public boolean copyTextToClipboard(String text, int labelResId) {
1027        ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
1028        String label = getResources().getString(labelResId);
1029        if (mClipBoardManager != null) {
1030            ClipData mClipData = ClipData.newPlainText(label, text);
1031            mClipBoardManager.setPrimaryClip(mClipData);
1032            return true;
1033        }
1034        return false;
1035    }
1036
1037    protected boolean manuallyChangePresence() {
1038        return getBooleanPreference(
1039                AppSettings.MANUALLY_CHANGE_PRESENCE, R.bool.manually_change_presence);
1040    }
1041
1042    protected String getShareableUri() {
1043        return getShareableUri(false);
1044    }
1045
1046    protected String getShareableUri(boolean http) {
1047        return null;
1048    }
1049
1050    protected void shareLink(boolean http) {
1051        String uri = getShareableUri(http);
1052        if (uri == null || uri.isEmpty()) {
1053            return;
1054        }
1055        Intent intent = new Intent(Intent.ACTION_SEND);
1056        intent.setType("text/plain");
1057        intent.putExtra(Intent.EXTRA_TEXT, getShareableUri(http));
1058        try {
1059            startActivity(Intent.createChooser(intent, getText(R.string.share_uri_with)));
1060        } catch (ActivityNotFoundException e) {
1061            Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
1062        }
1063    }
1064
1065    protected void launchOpenKeyChain(long keyId) {
1066        PgpEngine pgp = XmppActivity.this.xmppConnectionService.getPgpEngine();
1067        try {
1068            startIntentSenderForResult(
1069                    pgp.getIntentForKey(keyId).getIntentSender(),
1070                    0,
1071                    null,
1072                    0,
1073                    0,
1074                    0,
1075                    Compatibility.pgpStartIntentSenderOptions());
1076        } catch (final Throwable e) {
1077            Log.d(Config.LOGTAG, "could not launch OpenKeyChain", e);
1078            Toast.makeText(XmppActivity.this, R.string.openpgp_error, Toast.LENGTH_SHORT).show();
1079        }
1080    }
1081
1082    @Override
1083    protected void onResume() {
1084        super.onResume();
1085        SettingsUtils.applyScreenshotSetting(this);
1086    }
1087
1088    @Override
1089    public void onPause() {
1090        super.onPause();
1091    }
1092
1093    @Override
1094    public boolean onMenuOpened(int id, Menu menu) {
1095        if (id == AppCompatDelegate.FEATURE_SUPPORT_ACTION_BAR && menu != null) {
1096            MenuDoubleTabUtil.recordMenuOpen();
1097        }
1098        return super.onMenuOpened(id, menu);
1099    }
1100
1101    protected void showQrCode() {
1102        showQrCode(getShareableUri());
1103    }
1104
1105    protected void showQrCode(final String uri) {
1106        if (uri == null || uri.isEmpty()) {
1107            return;
1108        }
1109        final Point size = new Point();
1110        getWindowManager().getDefaultDisplay().getSize(size);
1111        final int width = Math.min(size.x, size.y);
1112        final int black;
1113        final int white;
1114        if (Activities.isNightMode(this)) {
1115            black =
1116                    MaterialColors.getColor(
1117                            this,
1118                            com.google.android.material.R.attr.colorSurfaceContainerHighest,
1119                            "No surface color configured");
1120            white =
1121                    MaterialColors.getColor(
1122                            this,
1123                            com.google.android.material.R.attr.colorSurfaceInverse,
1124                            "No inverse surface color configured");
1125        } else {
1126            black =
1127                    MaterialColors.getColor(
1128                            this,
1129                            com.google.android.material.R.attr.colorSurfaceInverse,
1130                            "No inverse surface color configured");
1131            white =
1132                    MaterialColors.getColor(
1133                            this,
1134                            com.google.android.material.R.attr.colorSurfaceContainerHighest,
1135                            "No surface color configured");
1136        }
1137        final var bitmap = BarcodeProvider.create2dBarcodeBitmap(uri, width, black, white);
1138        final ImageView view = new ImageView(this);
1139        view.setBackgroundColor(white);
1140        view.setImageBitmap(bitmap);
1141        MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(this);
1142        builder.setView(view);
1143        builder.create().show();
1144    }
1145
1146    protected Account extractAccount(Intent intent) {
1147        final String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
1148        try {
1149            return jid != null ? xmppConnectionService.findAccountByJid(Jid.of(jid)) : null;
1150        } catch (IllegalArgumentException e) {
1151            return null;
1152        }
1153    }
1154
1155    public AvatarService avatarService() {
1156        return xmppConnectionService.getAvatarService();
1157    }
1158
1159    public void loadBitmap(Message message, ImageView imageView) {
1160        Bitmap bm;
1161        try {
1162            bm =
1163                    xmppConnectionService
1164                            .getFileBackend()
1165                            .getThumbnail(message, (int) (metrics.density * 288), true);
1166        } catch (IOException e) {
1167            bm = null;
1168        }
1169        if (bm != null) {
1170            cancelPotentialWork(message, imageView);
1171            imageView.setImageBitmap(bm);
1172            imageView.setBackgroundColor(0x00000000);
1173        } else {
1174            if (cancelPotentialWork(message, imageView)) {
1175                imageView.setBackgroundColor(0xff333333);
1176                imageView.setImageDrawable(null);
1177                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
1178                final AsyncDrawable asyncDrawable = new AsyncDrawable(getResources(), null, task);
1179                imageView.setImageDrawable(asyncDrawable);
1180                try {
1181                    task.execute(message);
1182                } catch (final RejectedExecutionException ignored) {
1183                    ignored.printStackTrace();
1184                }
1185            }
1186        }
1187    }
1188
1189    protected interface OnValueEdited {
1190        String onValueEdited(String value);
1191    }
1192
1193    public static class ConferenceInvite {
1194        private String uuid;
1195        private final List<Jid> jids = new ArrayList<>();
1196
1197        public static ConferenceInvite parse(Intent data) {
1198            ConferenceInvite invite = new ConferenceInvite();
1199            invite.uuid = data.getStringExtra(ChooseContactActivity.EXTRA_CONVERSATION);
1200            if (invite.uuid == null) {
1201                return null;
1202            }
1203            invite.jids.addAll(ChooseContactActivity.extractJabberIds(data));
1204            return invite;
1205        }
1206
1207        public boolean execute(final XmppActivity activity) {
1208            final XmppConnectionService service = activity.xmppConnectionService;
1209            final Conversation conversation = service.findConversationByUuid(this.uuid);
1210            if (conversation == null) {
1211                return false;
1212            }
1213            if (conversation.getMode() == Conversation.MODE_MULTI) {
1214                for (final Jid jid : jids) {
1215                    // TODO use direct invites for public conferences
1216                    service.invite(conversation, jid);
1217                }
1218                return false;
1219            } else {
1220                jids.add(conversation.getJid().asBareJid());
1221                return service.createAdhocConference(
1222                        conversation.getAccount(), null, jids, activity.adhocCallback);
1223            }
1224        }
1225    }
1226
1227    static class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1228        private final WeakReference<ImageView> imageViewReference;
1229        private Message message = null;
1230
1231        private BitmapWorkerTask(ImageView imageView) {
1232            this.imageViewReference = new WeakReference<>(imageView);
1233        }
1234
1235        @Override
1236        protected Bitmap doInBackground(Message... params) {
1237            if (isCancelled()) {
1238                return null;
1239            }
1240            message = params[0];
1241            try {
1242                final XmppActivity activity = find(imageViewReference);
1243                if (activity != null && activity.xmppConnectionService != null) {
1244                    return activity.xmppConnectionService
1245                            .getFileBackend()
1246                            .getThumbnail(message, (int) (activity.metrics.density * 288), false);
1247                } else {
1248                    return null;
1249                }
1250            } catch (IOException e) {
1251                return null;
1252            }
1253        }
1254
1255        @Override
1256        protected void onPostExecute(final Bitmap bitmap) {
1257            if (!isCancelled()) {
1258                final ImageView imageView = imageViewReference.get();
1259                if (imageView != null) {
1260                    imageView.setImageBitmap(bitmap);
1261                    imageView.setBackgroundColor(bitmap == null ? 0xff333333 : 0x00000000);
1262                }
1263            }
1264        }
1265    }
1266
1267    private static class AsyncDrawable extends BitmapDrawable {
1268        private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1269
1270        private AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1271            super(res, bitmap);
1272            bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1273        }
1274
1275        private BitmapWorkerTask getBitmapWorkerTask() {
1276            return bitmapWorkerTaskReference.get();
1277        }
1278    }
1279
1280    public static XmppActivity find(@NonNull WeakReference<ImageView> viewWeakReference) {
1281        final View view = viewWeakReference.get();
1282        return view == null ? null : find(view);
1283    }
1284
1285    public static XmppActivity find(@NonNull final View view) {
1286        Context context = view.getContext();
1287        while (context instanceof ContextWrapper) {
1288            if (context instanceof XmppActivity) {
1289                return (XmppActivity) context;
1290            }
1291            context = ((ContextWrapper) context).getBaseContext();
1292        }
1293        return null;
1294    }
1295}