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