app/src/main/java/net/ktnx/mobileledger/ui/activity/MainActivity.java

   1 /*
   2  * Copyright © 2021 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Context;
  21 import android.content.Intent;
  22 import android.content.pm.PackageInfo;
  23 import android.content.pm.ShortcutInfo;
  24 import android.content.pm.ShortcutManager;
  25 import android.content.res.ColorStateList;
  26 import android.graphics.Color;
  27 import android.graphics.drawable.Icon;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.text.format.DateUtils;
  31 import android.util.Log;
  32 import android.view.View;
  33 import android.view.animation.AnimationUtils;
  34 import android.widget.TextView;
  35
  36 import androidx.annotation.NonNull;
  37 import androidx.appcompat.app.ActionBarDrawerToggle;
  38 import androidx.appcompat.app.AlertDialog;
  39 import androidx.core.view.GravityCompat;
  40 import androidx.drawerlayout.widget.DrawerLayout;
  41 import androidx.fragment.app.Fragment;
  42 import androidx.fragment.app.FragmentActivity;
  43 import androidx.lifecycle.ViewModelProvider;
  44 import androidx.recyclerview.widget.LinearLayoutManager;
  45 import androidx.recyclerview.widget.RecyclerView;
  46 import androidx.viewpager2.adapter.FragmentStateAdapter;
  47 import androidx.viewpager2.widget.ViewPager2;
  48
  49 import com.google.android.material.snackbar.Snackbar;
  50
  51 import net.ktnx.mobileledger.R;
  52 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  53 import net.ktnx.mobileledger.databinding.ActivityMainBinding;
  54 import net.ktnx.mobileledger.model.Data;
  55 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  56 import net.ktnx.mobileledger.ui.FabManager;
  57 import net.ktnx.mobileledger.ui.MainModel;
  58 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  59 import net.ktnx.mobileledger.ui.new_transaction.NewTransactionActivity;
  60 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  61 import net.ktnx.mobileledger.ui.templates.TemplatesActivity;
  62 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  63 import net.ktnx.mobileledger.utils.Colors;
  64 import net.ktnx.mobileledger.utils.Logger;
  65 import net.ktnx.mobileledger.utils.MLDB;
  66
  67 import org.jetbrains.annotations.NotNull;
  68
  69 import java.util.ArrayList;
  70 import java.util.Date;
  71 import java.util.List;
  72 import java.util.Locale;
  73 import java.util.Objects;
  74
  75 /*
  76  * TODO: reports
  77  *  */
  78
  79 public class MainActivity extends ProfileThemedActivity implements FabManager.FabHandler {
  80     public static final String STATE_CURRENT_PAGE = "current_page";
  81     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  82     public static final String STATE_ACC_FILTER = "account_filter";
  83     private static final boolean FAB_HIDDEN = false;
  84     private static final boolean FAB_SHOWN = true;
  85     private SectionsPagerAdapter mSectionsPagerAdapter;
  86     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  87     private int mCurrentPage;
  88     private boolean mBackMeansToAccountList = false;
  89     private DrawerLayout.SimpleDrawerListener drawerListener;
  90     private ActionBarDrawerToggle barDrawerToggle;
  91     private ViewPager2.OnPageChangeCallback pageChangeCallback;
  92     private MobileLedgerProfile profile;
  93     private MainModel mainModel;
  94     private ActivityMainBinding b;
  95     private int fabVerticalOffset;
  96     private FabManager fabManager;
  97     @Override
  98     protected void onStart() {
  99         super.onStart();
 100
 101         Logger.debug("MainActivity", "onStart()");
 102
 103         b.mainPager.setCurrentItem(mCurrentPage, false);
 104     }
 105     @Override
 106     protected void onSaveInstanceState(@NotNull Bundle outState) {
 107         super.onSaveInstanceState(outState);
 108         outState.putInt(STATE_CURRENT_PAGE, b.mainPager.getCurrentItem());
 109         if (mainModel.getAccountFilter()
 110                      .getValue() != null)
 111             outState.putString(STATE_ACC_FILTER, mainModel.getAccountFilter()
 112                                                           .getValue());
 113     }
 114     @Override
 115     protected void onDestroy() {
 116         mSectionsPagerAdapter = null;
 117         b.navProfileList.setAdapter(null);
 118         b.drawerLayout.removeDrawerListener(drawerListener);
 119         drawerListener = null;
 120         b.drawerLayout.removeDrawerListener(barDrawerToggle);
 121         barDrawerToggle = null;
 122         b.mainPager.unregisterOnPageChangeCallback(pageChangeCallback);
 123         pageChangeCallback = null;
 124         super.onDestroy();
 125     }
 126     @Override
 127     protected void onResume() {
 128         super.onResume();
 129         fabShouldShow();
 130     }
 131     @Override
 132     protected void onCreate(Bundle savedInstanceState) {
 133         Logger.debug("MainActivity", "onCreate()/entry");
 134         super.onCreate(savedInstanceState);
 135         Logger.debug("MainActivity", "onCreate()/after super");
 136         b = ActivityMainBinding.inflate(getLayoutInflater());
 137         setContentView(b.getRoot());
 138
 139         mainModel = new ViewModelProvider(this).get(MainModel.class);
 140
 141         mSectionsPagerAdapter = new SectionsPagerAdapter(this);
 142
 143         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 144         if (extra != null && savedInstanceState == null)
 145             savedInstanceState = extra;
 146
 147
 148         setSupportActionBar(b.toolbar);
 149
 150         Data.observeProfile(this, this::onProfileChanged);
 151
 152         Data.profiles.observe(this, this::onProfileListChanged);
 153         Data.backgroundTaskProgress.observe(this, this::onRetrieveProgress);
 154         Data.backgroundTasksRunning.observe(this, this::onRetrieveRunningChanged);
 155
 156         if (barDrawerToggle == null) {
 157             barDrawerToggle = new ActionBarDrawerToggle(this, b.drawerLayout, b.toolbar,
 158                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 159             b.drawerLayout.addDrawerListener(barDrawerToggle);
 160         }
 161         barDrawerToggle.syncState();
 162
 163         try {
 164             PackageInfo pi = getApplicationContext().getPackageManager()
 165                                                     .getPackageInfo(getPackageName(), 0);
 166             ((TextView) b.navUpper.findViewById(R.id.drawer_version_text)).setText(pi.versionName);
 167             ((TextView) b.noProfilesLayout.findViewById(R.id.drawer_version_text)).setText(
 168                     pi.versionName);
 169         }
 170         catch (Exception e) {
 171             e.printStackTrace();
 172         }
 173
 174         markDrawerItemCurrent(R.id.nav_account_summary);
 175
 176         b.mainPager.setAdapter(mSectionsPagerAdapter);
 177
 178         if (pageChangeCallback == null) {
 179             pageChangeCallback = new ViewPager2.OnPageChangeCallback() {
 180                 @Override
 181                 public void onPageSelected(int position) {
 182                     mCurrentPage = position;
 183                     switch (position) {
 184                         case 0:
 185                             markDrawerItemCurrent(R.id.nav_account_summary);
 186                             break;
 187                         case 1:
 188                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 189                             break;
 190                         default:
 191                             Log.e("MainActivity",
 192                                     String.format("Unexpected page index %d", position));
 193                     }
 194
 195                     super.onPageSelected(position);
 196                 }
 197             };
 198             b.mainPager.registerOnPageChangeCallback(pageChangeCallback);
 199         }
 200
 201         mCurrentPage = 0;
 202         if (savedInstanceState != null) {
 203             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 204             if (currentPage != -1) {
 205                 mCurrentPage = currentPage;
 206             }
 207             mainModel.getAccountFilter()
 208                      .setValue(savedInstanceState.getString(STATE_ACC_FILTER, null));
 209         }
 210
 211         b.btnNoProfilesAdd.setOnClickListener(
 212                 v -> MobileLedgerProfile.startEditProfileActivity(this, null));
 213
 214         b.btnAddTransaction.setOnClickListener(this::fabNewTransactionClicked);
 215
 216         b.navNewProfileButton.setOnClickListener(
 217                 v -> MobileLedgerProfile.startEditProfileActivity(this, null));
 218
 219         b.transactionListCancelDownload.setOnClickListener(this::onStopTransactionRefreshClick);
 220
 221         if (mProfileListAdapter == null)
 222             mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 223         b.navProfileList.setAdapter(mProfileListAdapter);
 224
 225         mProfileListAdapter.editingProfiles.observe(this, newValue -> {
 226             if (newValue) {
 227                 b.navProfilesStartEdit.setVisibility(View.GONE);
 228                 b.navProfilesCancelEdit.setVisibility(View.VISIBLE);
 229                 b.navNewProfileButton.setVisibility(View.VISIBLE);
 230                 if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 231                     b.navProfilesStartEdit.startAnimation(
 232                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 233                     b.navProfilesCancelEdit.startAnimation(
 234                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 235                     b.navNewProfileButton.startAnimation(
 236                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 237                 }
 238             }
 239             else {
 240                 b.navProfilesCancelEdit.setVisibility(View.GONE);
 241                 b.navProfilesStartEdit.setVisibility(View.VISIBLE);
 242                 b.navNewProfileButton.setVisibility(View.GONE);
 243                 if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 244                     b.navProfilesCancelEdit.startAnimation(
 245                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 246                     b.navProfilesStartEdit.startAnimation(
 247                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 248                     b.navNewProfileButton.startAnimation(
 249                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 250                 }
 251             }
 252
 253             mProfileListAdapter.notifyDataSetChanged();
 254         });
 255
 256         fabManager = new FabManager(b.btnAddTransaction);
 257
 258         LinearLayoutManager llm = new LinearLayoutManager(this);
 259
 260         llm.setOrientation(RecyclerView.VERTICAL);
 261         b.navProfileList.setLayoutManager(llm);
 262
 263         b.navProfilesStartEdit.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 264         b.navProfilesCancelEdit.setOnClickListener(
 265                 (v) -> mProfileListAdapter.flipEditingProfiles());
 266         b.navProfileListHeadButtons.setOnClickListener(
 267                 (v) -> mProfileListAdapter.flipEditingProfiles());
 268         if (drawerListener == null) {
 269             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 270                 @Override
 271                 public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
 272                     if (slideOffset > 0.2)
 273                         fabManager.hideFab();
 274                 }
 275                 @Override
 276                 public void onDrawerClosed(View drawerView) {
 277                     super.onDrawerClosed(drawerView);
 278                     mProfileListAdapter.setAnimationsEnabled(false);
 279                     mProfileListAdapter.editingProfiles.setValue(false);
 280                     Data.drawerOpen.setValue(false);
 281                     fabShouldShow();
 282                 }
 283                 @Override
 284                 public void onDrawerOpened(View drawerView) {
 285                     super.onDrawerOpened(drawerView);
 286                     mProfileListAdapter.setAnimationsEnabled(true);
 287                     Data.drawerOpen.setValue(true);
 288                     fabManager.hideFab();
 289                 }
 290             };
 291             b.drawerLayout.addDrawerListener(drawerListener);
 292         }
 293
 294         Data.drawerOpen.observe(this, open -> {
 295             if (open)
 296                 b.drawerLayout.open();
 297             else
 298                 b.drawerLayout.close();
 299         });
 300
 301         mainModel.getUpdateError()
 302                  .observe(this, (error) -> {
 303                      if (error == null)
 304                          return;
 305
 306                      Snackbar.make(b.mainPager, error, Snackbar.LENGTH_INDEFINITE)
 307                              .show();
 308                      mainModel.clearUpdateError();
 309                  });
 310         Data.locale.observe(this, l -> refreshLastUpdateInfo());
 311         Data.lastUpdateDate.observe(this, date -> refreshLastUpdateInfo());
 312         Data.lastUpdateTransactionCount.observe(this, date -> refreshLastUpdateInfo());
 313         Data.lastUpdateAccountCount.observe(this, date -> refreshLastUpdateInfo());
 314         b.navAccountSummary.setOnClickListener(this::onAccountSummaryClicked);
 315         b.navLatestTransactions.setOnClickListener(this::onLatestTransactionsClicked);
 316         b.navPatterns.setOnClickListener(this::onPatternsClick);
 317     }
 318     private void onPatternsClick(View view) {
 319         Intent intent = new Intent(this, TemplatesActivity.class);
 320         startActivity(intent);
 321     }
 322     private void scheduleDataRetrievalIfStale(long lastUpdate) {
 323         long now = new Date().getTime();
 324         if ((lastUpdate == 0) || (now > (lastUpdate + (24 * 3600 * 1000)))) {
 325             if (lastUpdate == 0)
 326                 Logger.debug("db::", "WEB data never fetched. scheduling a fetch");
 327             else
 328                 Logger.debug("db", String.format(Locale.ENGLISH,
 329                         "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 330                         lastUpdate / 1000f, now / 1000f));
 331
 332             mainModel.scheduleTransactionListRetrieval();
 333         }
 334     }
 335     private void createShortcuts(List<MobileLedgerProfile> list) {
 336         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1)
 337             return;
 338
 339         ShortcutManager sm = getSystemService(ShortcutManager.class);
 340         List<ShortcutInfo> shortcuts = new ArrayList<>();
 341         int i = 0;
 342         for (MobileLedgerProfile p : list) {
 343             if (shortcuts.size() >= sm.getMaxShortcutCountPerActivity())
 344                 break;
 345
 346             if (!p.isPostingPermitted())
 347                 continue;
 348
 349             final ShortcutInfo.Builder builder =
 350                     new ShortcutInfo.Builder(this, "new_transaction_" + p.getId());
 351             ShortcutInfo si = builder.setShortLabel(p.getName())
 352                                      .setIcon(Icon.createWithResource(this,
 353                                              R.drawable.thick_plus_icon))
 354                                      .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 355                                              NewTransactionActivity.class).putExtra("profile_id",
 356                                              p.getId()))
 357                                      .setRank(i)
 358                                      .build();
 359             shortcuts.add(si);
 360             i++;
 361         }
 362         sm.setDynamicShortcuts(shortcuts);
 363     }
 364     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
 365         if ((newList == null) || newList.isEmpty()) {
 366             b.noProfilesLayout.setVisibility(View.VISIBLE);
 367             b.mainAppLayout.setVisibility(View.GONE);
 368             return;
 369         }
 370
 371         b.mainAppLayout.setVisibility(View.VISIBLE);
 372         b.noProfilesLayout.setVisibility(View.GONE);
 373
 374         b.navProfileList.setMinimumHeight(
 375                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 376
 377         Logger.debug("profiles", "profile list changed");
 378         mProfileListAdapter.notifyDataSetChanged();
 379
 380         createShortcuts(newList);
 381     }
 382     /**
 383      * called when the current profile has changed
 384      */
 385     private void onProfileChanged(MobileLedgerProfile profile) {
 386         if (this.profile == null) {
 387             if (profile == null)
 388                 return;
 389         }
 390         else {
 391             if (this.profile.equals(profile))
 392                 return;
 393         }
 394
 395         boolean haveProfile = profile != null;
 396
 397         if (haveProfile)
 398             setTitle(profile.getName());
 399         else
 400             setTitle(R.string.app_name);
 401
 402         mainModel.setProfile(profile);
 403
 404         this.profile = profile;
 405
 406         int newProfileTheme = haveProfile ? profile.getThemeHue() : -1;
 407         if (newProfileTheme != Colors.profileThemeId) {
 408             Logger.debug("profiles",
 409                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 410                             newProfileTheme));
 411             Colors.profileThemeId = newProfileTheme;
 412             profileThemeChanged();
 413             // profileThemeChanged would restart the activity, so no need to reload the
 414             // data sets below
 415             return;
 416         }
 417
 418         b.noProfilesLayout.setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 419         b.pagerLayout.setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 420
 421         mProfileListAdapter.notifyDataSetChanged();
 422
 423         mainModel.clearAccounts();
 424         mainModel.clearTransactions();
 425
 426         if (haveProfile) {
 427             mainModel.scheduleAccountListReload();
 428             Logger.debug("transactions", "requesting list reload");
 429             mainModel.scheduleTransactionListReload();
 430
 431             if (profile.isPostingPermitted()) {
 432                 b.toolbar.setSubtitle(null);
 433                 b.btnAddTransaction.show();
 434             }
 435             else {
 436                 b.toolbar.setSubtitle(R.string.profile_subtitle_read_only);
 437                 b.btnAddTransaction.hide();
 438             }
 439         }
 440         else {
 441             b.toolbar.setSubtitle(null);
 442             b.btnAddTransaction.hide();
 443         }
 444
 445         updateLastUpdateTextFromDB();
 446     }
 447     private void profileThemeChanged() {
 448         // un-hook all observed LiveData
 449         Data.removeProfileObservers(this);
 450         Data.profiles.removeObservers(this);
 451         Data.lastUpdateTransactionCount.removeObservers(this);
 452         Data.lastUpdateAccountCount.removeObservers(this);
 453         Data.lastUpdateDate.removeObservers(this);
 454
 455         Logger.debug("MainActivity", "profileThemeChanged(): recreating activity");
 456         recreate();
 457     }
 458     public void fabNewTransactionClicked(View view) {
 459         Intent intent = new Intent(this, NewTransactionActivity.class);
 460         startActivity(intent);
 461         overridePendingTransition(R.anim.slide_in_up, R.anim.dummy);
 462     }
 463     public void markDrawerItemCurrent(int id) {
 464         TextView item = b.drawerLayout.findViewById(id);
 465         item.setBackgroundColor(Colors.tableRowDarkBG);
 466
 467         for (int i = 0; i < b.navActions.getChildCount(); i++) {
 468             View view = b.navActions.getChildAt(i);
 469             if (view.getId() != id) {
 470                 view.setBackgroundColor(Color.TRANSPARENT);
 471             }
 472         }
 473     }
 474     public void onAccountSummaryClicked(View view) {
 475         b.drawerLayout.closeDrawers();
 476
 477         showAccountSummaryFragment();
 478     }
 479     private void showAccountSummaryFragment() {
 480         b.mainPager.setCurrentItem(0, true);
 481         mainModel.getAccountFilter()
 482                  .setValue(null);
 483     }
 484     public void onLatestTransactionsClicked(View view) {
 485         b.drawerLayout.closeDrawers();
 486
 487         showTransactionsFragment(null);
 488     }
 489     public void showTransactionsFragment(String accName) {
 490         mainModel.getAccountFilter()
 491                  .setValue(accName);
 492         b.mainPager.setCurrentItem(1, true);
 493     }
 494     public void showAccountTransactions(String accountName) {
 495         mBackMeansToAccountList = true;
 496         showTransactionsFragment(accountName);
 497     }
 498     @Override
 499     public void onBackPressed() {
 500         if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 501             b.drawerLayout.closeDrawer(GravityCompat.START);
 502         }
 503         else {
 504             if (mBackMeansToAccountList && (b.mainPager.getCurrentItem() == 1)) {
 505                 mainModel.getAccountFilter()
 506                          .setValue(null);
 507                 showAccountSummaryFragment();
 508                 mBackMeansToAccountList = false;
 509             }
 510             else {
 511                 Logger.debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 512                         getSupportFragmentManager().getBackStackEntryCount()));
 513
 514                 super.onBackPressed();
 515             }
 516         }
 517     }
 518     public void updateLastUpdateTextFromDB() {
 519         if (profile == null)
 520             return;
 521
 522         long lastUpdate = profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L);
 523
 524         Logger.debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", lastUpdate));
 525         if (lastUpdate == 0) {
 526             Data.lastUpdateDate.postValue(null);
 527         }
 528         else {
 529             Data.lastUpdateDate.postValue(new Date(lastUpdate));
 530         }
 531
 532         scheduleDataRetrievalIfStale(lastUpdate);
 533
 534     }
 535     private void refreshLastUpdateInfo() {
 536         final int formatFlags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR |
 537                                 DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_NUMERIC_DATE;
 538         String templateForTransactions =
 539                 getResources().getString(R.string.transaction_count_summary);
 540         String templateForAccounts = getResources().getString(R.string.account_count_summary);
 541         Integer accountCount = Data.lastUpdateAccountCount.getValue();
 542         Integer transactionCount = Data.lastUpdateTransactionCount.getValue();
 543         Date lastUpdate = Data.lastUpdateDate.getValue();
 544         if (lastUpdate == null) {
 545             Data.lastTransactionsUpdateText.set("----");
 546             Data.lastAccountsUpdateText.set("----");
 547         }
 548         else {
 549             Data.lastTransactionsUpdateText.set(
 550                     String.format(Objects.requireNonNull(Data.locale.getValue()),
 551                             templateForTransactions,
 552                             transactionCount == null ? 0 : transactionCount,
 553                             DateUtils.formatDateTime(this, lastUpdate.getTime(), formatFlags)));
 554             Data.lastAccountsUpdateText.set(
 555                     String.format(Objects.requireNonNull(Data.locale.getValue()),
 556                             templateForAccounts, accountCount == null ? 0 : accountCount,
 557                             DateUtils.formatDateTime(this, lastUpdate.getTime(), formatFlags)));
 558         }
 559     }
 560     public void onStopTransactionRefreshClick(View view) {
 561         Logger.debug("interactive", "Cancelling transactions refresh");
 562         mainModel.stopTransactionsRetrieval();
 563         b.transactionListCancelDownload.setEnabled(false);
 564     }
 565     public void onRetrieveRunningChanged(Boolean running) {
 566         if (running) {
 567             b.transactionListCancelDownload.setEnabled(true);
 568             ColorStateList csl = Colors.getColorStateList();
 569             b.transactionListProgressBar.setIndeterminateTintList(csl);
 570             b.transactionListProgressBar.setProgressTintList(csl);
 571             b.transactionListProgressBar.setIndeterminate(true);
 572             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 573                 b.transactionListProgressBar.setProgress(0, false);
 574             }
 575             else {
 576                 b.transactionListProgressBar.setProgress(0);
 577             }
 578             b.transactionProgressLayout.setVisibility(View.VISIBLE);
 579         }
 580         else {
 581             b.transactionProgressLayout.setVisibility(View.GONE);
 582         }
 583     }
 584     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 585         if (progress.getState() == RetrieveTransactionsTask.ProgressState.FINISHED) {
 586             Logger.debug("progress", "Done");
 587             b.transactionProgressLayout.setVisibility(View.GONE);
 588
 589             mainModel.transactionRetrievalDone();
 590
 591             String error = progress.getError();
 592             if (error != null) {
 593                 if (error.equals(RetrieveTransactionsTask.Result.ERR_JSON_PARSER_ERROR))
 594                     error = getResources().getString(R.string.err_json_parser_error);
 595
 596                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
 597                 builder.setMessage(error);
 598                 builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 599                     Logger.debug("error", "will start profile editor");
 600                     MobileLedgerProfile.startEditProfileActivity(this, profile);
 601                 });
 602                 builder.create()
 603                        .show();
 604                 return;
 605             }
 606
 607             return;
 608         }
 609
 610
 611         b.transactionListCancelDownload.setEnabled(true);
 612 //        ColorStateList csl = Colors.getColorStateList();
 613 //        progressBar.setIndeterminateTintList(csl);
 614 //        progressBar.setProgressTintList(csl);
 615 //        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 616 //            progressBar.setProgress(0, false);
 617 //        else
 618 //            progressBar.setProgress(0);
 619         b.transactionProgressLayout.setVisibility(View.VISIBLE);
 620
 621         if (progress.isIndeterminate() || (progress.getTotal() <= 0)) {
 622             b.transactionListProgressBar.setIndeterminate(true);
 623             Logger.debug("progress", "indeterminate");
 624         }
 625         else {
 626             if (b.transactionListProgressBar.isIndeterminate()) {
 627                 b.transactionListProgressBar.setIndeterminate(false);
 628             }
 629 //            Logger.debug("progress",
 630 //                    String.format(Locale.US, "%d/%d", progress.getProgress(), progress.getTotal
 631 //                    ()));
 632             b.transactionListProgressBar.setMax(progress.getTotal());
 633             // for some reason animation doesn't work - no progress is shown (stick at 0)
 634             // on lineageOS 14.1 (Nougat, 7.1.2)
 635             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 636                 b.transactionListProgressBar.setProgress(progress.getProgress(), false);
 637             else
 638                 b.transactionListProgressBar.setProgress(progress.getProgress());
 639         }
 640     }
 641     public void fabShouldShow() {
 642         if ((profile != null) && profile.isPostingPermitted() && !b.drawerLayout.isOpen())
 643             fabManager.showFab();
 644     }
 645     @Override
 646     public Context getContext() {
 647         return this;
 648     }
 649     @Override
 650     public void showManagedFab() {
 651         fabShouldShow();
 652     }
 653     @Override
 654     public void hideManagedFab() {
 655         fabManager.hideFab();
 656     }
 657     public static class SectionsPagerAdapter extends FragmentStateAdapter {
 658
 659         public SectionsPagerAdapter(@NonNull FragmentActivity fragmentActivity) {
 660             super(fragmentActivity);
 661         }
 662         @NotNull
 663         @Override
 664         public Fragment createFragment(int position) {
 665             Logger.debug("main",
 666                     String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 667             switch (position) {
 668                 case 0:
 669 //                    debug("flow", "Creating account summary fragment");
 670                     return new AccountSummaryFragment();
 671                 case 1:
 672                     return new TransactionListFragment();
 673                 default:
 674                     throw new IllegalStateException(
 675                             String.format("Unexpected fragment index: " + "%d", position));
 676             }
 677         }
 678
 679         @Override
 680         public int getItemCount() {
 681             return 2;
 682         }
 683     }
 684 }