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.annotation.Nullable;
  38 import androidx.appcompat.app.ActionBarDrawerToggle;
  39 import androidx.appcompat.app.AlertDialog;
  40 import androidx.core.view.GravityCompat;
  41 import androidx.drawerlayout.widget.DrawerLayout;
  42 import androidx.fragment.app.Fragment;
  43 import androidx.fragment.app.FragmentActivity;
  44 import androidx.lifecycle.LiveData;
  45 import androidx.lifecycle.MutableLiveData;
  46 import androidx.lifecycle.ViewModelProvider;
  47 import androidx.recyclerview.widget.LinearLayoutManager;
  48 import androidx.recyclerview.widget.RecyclerView;
  49 import androidx.viewpager2.adapter.FragmentStateAdapter;
  50 import androidx.viewpager2.widget.ViewPager2;
  51
  52 import com.google.android.material.snackbar.Snackbar;
  53
  54 import net.ktnx.mobileledger.BackupsActivity;
  55 import net.ktnx.mobileledger.R;
  56 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  57 import net.ktnx.mobileledger.async.TransactionAccumulator;
  58 import net.ktnx.mobileledger.databinding.ActivityMainBinding;
  59 import net.ktnx.mobileledger.db.DB;
  60 import net.ktnx.mobileledger.db.Option;
  61 import net.ktnx.mobileledger.db.Profile;
  62 import net.ktnx.mobileledger.db.TransactionWithAccounts;
  63 import net.ktnx.mobileledger.model.Data;
  64 import net.ktnx.mobileledger.model.LedgerTransaction;
  65 import net.ktnx.mobileledger.ui.FabManager;
  66 import net.ktnx.mobileledger.ui.MainModel;
  67 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  68 import net.ktnx.mobileledger.ui.new_transaction.NewTransactionActivity;
  69 import net.ktnx.mobileledger.ui.profiles.ProfileDetailActivity;
  70 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  71 import net.ktnx.mobileledger.ui.templates.TemplatesActivity;
  72 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  73 import net.ktnx.mobileledger.utils.Colors;
  74 import net.ktnx.mobileledger.utils.Logger;
  75 import net.ktnx.mobileledger.utils.Misc;
  76
  77 import org.jetbrains.annotations.NotNull;
  78
  79 import java.util.ArrayList;
  80 import java.util.Date;
  81 import java.util.List;
  82 import java.util.Locale;
  83 import java.util.Objects;
  84
  85 /*
  86  * TODO: reports
  87  *  */
  88
  89 public class MainActivity extends ProfileThemedActivity implements FabManager.FabHandler {
  90     public static final String TAG = "main-act";
  91     public static final String STATE_CURRENT_PAGE = "current_page";
  92     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  93     public static final String STATE_ACC_FILTER = "account_filter";
  94     private static final boolean FAB_HIDDEN = false;
  95     private static final boolean FAB_SHOWN = true;
  96     private ConverterThread converterThread = null;
  97     private SectionsPagerAdapter mSectionsPagerAdapter;
  98     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  99     private int mCurrentPage;
 100     private boolean mBackMeansToAccountList = false;
 101     private DrawerLayout.SimpleDrawerListener drawerListener;
 102     private ActionBarDrawerToggle barDrawerToggle;
 103     private ViewPager2.OnPageChangeCallback pageChangeCallback;
 104     private Profile profile;
 105     private MainModel mainModel;
 106     private ActivityMainBinding b;
 107     private int fabVerticalOffset;
 108     private FabManager fabManager;
 109     @Override
 110     protected void onStart() {
 111         super.onStart();
 112
 113         Logger.debug(TAG, "onStart()");
 114
 115         b.mainPager.setCurrentItem(mCurrentPage, false);
 116     }
 117     @Override
 118     protected void onSaveInstanceState(@NotNull Bundle outState) {
 119         super.onSaveInstanceState(outState);
 120         outState.putInt(STATE_CURRENT_PAGE, b.mainPager.getCurrentItem());
 121         if (mainModel.getAccountFilter()
 122                      .getValue() != null)
 123             outState.putString(STATE_ACC_FILTER, mainModel.getAccountFilter()
 124                                                           .getValue());
 125     }
 126     @Override
 127     protected void onDestroy() {
 128         mSectionsPagerAdapter = null;
 129         b.navProfileList.setAdapter(null);
 130         b.drawerLayout.removeDrawerListener(drawerListener);
 131         drawerListener = null;
 132         b.drawerLayout.removeDrawerListener(barDrawerToggle);
 133         barDrawerToggle = null;
 134         b.mainPager.unregisterOnPageChangeCallback(pageChangeCallback);
 135         pageChangeCallback = null;
 136         super.onDestroy();
 137     }
 138     @Override
 139     protected void onResume() {
 140         super.onResume();
 141         fabShouldShow();
 142     }
 143     @Override
 144     protected void onCreate(Bundle savedInstanceState) {
 145         Logger.debug(TAG, "onCreate()/entry");
 146         super.onCreate(savedInstanceState);
 147         Logger.debug(TAG, "onCreate()/after super");
 148         b = ActivityMainBinding.inflate(getLayoutInflater());
 149         setContentView(b.getRoot());
 150
 151         mainModel = new ViewModelProvider(this).get(MainModel.class);
 152
 153         mSectionsPagerAdapter = new SectionsPagerAdapter(this);
 154
 155         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 156         if (extra != null && savedInstanceState == null)
 157             savedInstanceState = extra;
 158
 159
 160         setSupportActionBar(b.toolbar);
 161
 162         Data.observeProfile(this, this::onProfileChanged);
 163
 164         Data.profiles.observe(this, this::onProfileListChanged);
 165
 166         Data.backgroundTaskProgress.observe(this, this::onRetrieveProgress);
 167         Data.backgroundTasksRunning.observe(this, this::onRetrieveRunningChanged);
 168
 169         if (barDrawerToggle == null) {
 170             barDrawerToggle = new ActionBarDrawerToggle(this, b.drawerLayout, b.toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 171             b.drawerLayout.addDrawerListener(barDrawerToggle);
 172         }
 173         barDrawerToggle.syncState();
 174
 175         try {
 176             PackageInfo pi = getApplicationContext().getPackageManager()
 177                                                     .getPackageInfo(getPackageName(), 0);
 178             ((TextView) b.navUpper.findViewById(R.id.drawer_version_text)).setText(pi.versionName);
 179             ((TextView) b.noProfilesLayout.findViewById(R.id.drawer_version_text)).setText(pi.versionName);
 180         }
 181         catch (Exception e) {
 182             e.printStackTrace();
 183         }
 184
 185         markDrawerItemCurrent(R.id.nav_account_summary);
 186
 187         b.mainPager.setAdapter(mSectionsPagerAdapter);
 188         b.mainPager.setOffscreenPageLimit(1);
 189
 190         if (pageChangeCallback == null) {
 191             pageChangeCallback = new ViewPager2.OnPageChangeCallback() {
 192                 @Override
 193                 public void onPageSelected(int position) {
 194                     mCurrentPage = position;
 195                     switch (position) {
 196                         case 0:
 197                             markDrawerItemCurrent(R.id.nav_account_summary);
 198                             break;
 199                         case 1:
 200                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 201                             break;
 202                         default:
 203                             Log.e(TAG, String.format("Unexpected page index %d", position));
 204                     }
 205
 206                     super.onPageSelected(position);
 207                 }
 208             };
 209             b.mainPager.registerOnPageChangeCallback(pageChangeCallback);
 210         }
 211
 212         mCurrentPage = 0;
 213         if (savedInstanceState != null) {
 214             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 215             if (currentPage != -1) {
 216                 mCurrentPage = currentPage;
 217             }
 218             mainModel.getAccountFilter()
 219                      .setValue(savedInstanceState.getString(STATE_ACC_FILTER, null));
 220         }
 221
 222         b.btnNoProfilesAdd.setOnClickListener(v -> ProfileDetailActivity.start(this, null));
 223         b.btnRestore.setOnClickListener(v -> BackupsActivity.start(this));
 224
 225         b.btnAddTransaction.setOnClickListener(this::fabNewTransactionClicked);
 226
 227         b.navNewProfileButton.setOnClickListener(v -> ProfileDetailActivity.start(this, null));
 228
 229         b.transactionListCancelDownload.setOnClickListener(this::onStopTransactionRefreshClick);
 230
 231         if (mProfileListAdapter == null)
 232             mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 233         b.navProfileList.setAdapter(mProfileListAdapter);
 234
 235         mProfileListAdapter.editingProfiles.observe(this, newValue -> {
 236             if (newValue) {
 237                 b.navProfilesStartEdit.setVisibility(View.GONE);
 238                 b.navProfilesCancelEdit.setVisibility(View.VISIBLE);
 239                 b.navNewProfileButton.setVisibility(View.VISIBLE);
 240                 if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 241                     b.navProfilesStartEdit.startAnimation(
 242                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 243                     b.navProfilesCancelEdit.startAnimation(
 244                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 245                     b.navNewProfileButton.startAnimation(
 246                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 247                 }
 248             }
 249             else {
 250                 b.navProfilesCancelEdit.setVisibility(View.GONE);
 251                 b.navProfilesStartEdit.setVisibility(View.VISIBLE);
 252                 b.navNewProfileButton.setVisibility(View.GONE);
 253                 if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 254                     b.navProfilesCancelEdit.startAnimation(
 255                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 256                     b.navProfilesStartEdit.startAnimation(
 257                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 258                     b.navNewProfileButton.startAnimation(
 259                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 260                 }
 261             }
 262
 263             mProfileListAdapter.notifyDataSetChanged();
 264         });
 265
 266         fabManager = new FabManager(b.btnAddTransaction);
 267
 268         LinearLayoutManager llm = new LinearLayoutManager(this);
 269
 270         llm.setOrientation(RecyclerView.VERTICAL);
 271         b.navProfileList.setLayoutManager(llm);
 272
 273         b.navProfilesStartEdit.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 274         b.navProfilesCancelEdit.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 275         b.navProfileListHeadButtons.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 276         if (drawerListener == null) {
 277             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 278                 @Override
 279                 public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
 280                     if (slideOffset > 0.2)
 281                         fabManager.hideFab();
 282                 }
 283                 @Override
 284                 public void onDrawerClosed(View drawerView) {
 285                     super.onDrawerClosed(drawerView);
 286                     mProfileListAdapter.setAnimationsEnabled(false);
 287                     mProfileListAdapter.editingProfiles.setValue(false);
 288                     Data.drawerOpen.setValue(false);
 289                     fabShouldShow();
 290                 }
 291                 @Override
 292                 public void onDrawerOpened(View drawerView) {
 293                     super.onDrawerOpened(drawerView);
 294                     mProfileListAdapter.setAnimationsEnabled(true);
 295                     Data.drawerOpen.setValue(true);
 296                     fabManager.hideFab();
 297                 }
 298             };
 299             b.drawerLayout.addDrawerListener(drawerListener);
 300         }
 301
 302         Data.drawerOpen.observe(this, open -> {
 303             if (open)
 304                 b.drawerLayout.open();
 305             else
 306                 b.drawerLayout.close();
 307         });
 308
 309         mainModel.getUpdateError()
 310                  .observe(this, (error) -> {
 311                      if (error == null)
 312                          return;
 313
 314                      Snackbar.make(b.mainPager, error, Snackbar.LENGTH_INDEFINITE)
 315                              .show();
 316                      mainModel.clearUpdateError();
 317                  });
 318         Data.locale.observe(this, l -> refreshLastUpdateInfo());
 319         Data.lastUpdateDate.observe(this, date -> refreshLastUpdateInfo());
 320         Data.lastUpdateTransactionCount.observe(this, date -> refreshLastUpdateInfo());
 321         Data.lastUpdateAccountCount.observe(this, date -> refreshLastUpdateInfo());
 322         b.navAccountSummary.setOnClickListener(this::onAccountSummaryClicked);
 323         b.navLatestTransactions.setOnClickListener(this::onLatestTransactionsClicked);
 324         b.navPatterns.setOnClickListener(this::onPatternsClick);
 325         b.navBackupRestore.setOnClickListener(this::onBackupRestoreClick);
 326     }
 327     private void onBackupRestoreClick(View view) {
 328         Intent intent = new Intent(this, BackupsActivity.class);
 329         startActivity(intent);
 330     }
 331     private void onPatternsClick(View view) {
 332         Intent intent = new Intent(this, TemplatesActivity.class);
 333         startActivity(intent);
 334     }
 335     private void scheduleDataRetrievalIfStale(long lastUpdate) {
 336         long now = new Date().getTime();
 337         if ((lastUpdate == 0) || (now > (lastUpdate + (24 * 3600 * 1000)))) {
 338             if (lastUpdate == 0)
 339                 Logger.debug("db::", "WEB data never fetched. scheduling a fetch");
 340             else
 341                 Logger.debug("db", String.format(Locale.ENGLISH,
 342                         "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 343                         lastUpdate / 1000f, now / 1000f));
 344
 345             mainModel.scheduleTransactionListRetrieval();
 346         }
 347     }
 348     private void createShortcuts(@NotNull List<Profile> list) {
 349         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1)
 350             return;
 351
 352         ShortcutManager sm = getSystemService(ShortcutManager.class);
 353         List<ShortcutInfo> shortcuts = new ArrayList<>();
 354         int i = 0;
 355         for (Profile p : list) {
 356             if (shortcuts.size() >= sm.getMaxShortcutCountPerActivity())
 357                 break;
 358
 359             if (!p.permitPosting())
 360                 continue;
 361
 362             final ShortcutInfo.Builder builder =
 363                     new ShortcutInfo.Builder(this, "new_transaction_" + p.getId());
 364             ShortcutInfo si = builder.setShortLabel(p.getName())
 365                                      .setIcon(Icon.createWithResource(this,
 366                                              R.drawable.thick_plus_icon))
 367                                      .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 368                                              NewTransactionActivity.class).putExtra(
 369                                              ProfileThemedActivity.PARAM_PROFILE_ID, p.getId())
 370                                                                           .putExtra(
 371                                                                                   ProfileThemedActivity.PARAM_THEME,
 372                                                                                   p.getTheme()))
 373                                      .setRank(i)
 374                                      .build();
 375             shortcuts.add(si);
 376             i++;
 377         }
 378         sm.setDynamicShortcuts(shortcuts);
 379     }
 380     private void onProfileListChanged(@NotNull List<Profile> newList) {
 381         createShortcuts(newList);
 382
 383         if (newList.isEmpty()) {
 384             b.noProfilesLayout.setVisibility(View.VISIBLE);
 385             b.mainAppLayout.setVisibility(View.GONE);
 386             return;
 387         }
 388
 389         b.mainAppLayout.setVisibility(View.VISIBLE);
 390         b.noProfilesLayout.setVisibility(View.GONE);
 391
 392         b.navProfileList.setMinimumHeight(
 393                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 394
 395         Logger.debug("profiles", "profile list changed");
 396         mProfileListAdapter.setProfileList(newList);
 397
 398         final Profile currentProfile = Data.getProfile();
 399         Profile replacementProfile = null;
 400         if (currentProfile != null) {
 401             for (Profile p : newList) {
 402                 if (p.getId() == currentProfile.getId()) {
 403                     replacementProfile = p;
 404                     break;
 405                 }
 406             }
 407         }
 408
 409         if (replacementProfile == null) {
 410             Logger.debug(TAG, "Switching profile because the current is no longer available");
 411             Data.setCurrentProfile(newList.get(0));
 412         }
 413         else {
 414             Data.setCurrentProfile(replacementProfile);
 415         }
 416     }
 417     /**
 418      * called when the current profile has changed
 419      */
 420     private void onProfileChanged(@Nullable Profile newProfile) {
 421         if (this.profile != null) {
 422             if (this.profile.equals(newProfile))
 423                 return;
 424         }
 425
 426         boolean haveProfile = newProfile != null;
 427
 428         if (haveProfile)
 429             setTitle(newProfile.getName());
 430         else
 431             setTitle(R.string.app_name);
 432
 433         int newProfileTheme = haveProfile ? newProfile.getTheme() : Colors.DEFAULT_HUE_DEG;
 434         if (newProfileTheme != Colors.profileThemeId) {
 435             Logger.debug("profiles",
 436                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 437                             newProfileTheme));
 438             Colors.profileThemeId = newProfileTheme;
 439             profileThemeChanged();
 440             // profileThemeChanged would restart the activity, so no need to reload the
 441             // data sets below
 442             return;
 443         }
 444
 445         final boolean sameProfileId = (newProfile != null) && (this.profile != null) &&
 446                                       this.profile.getId() == newProfile.getId();
 447
 448         this.profile = newProfile;
 449
 450         b.noProfilesLayout.setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 451         b.pagerLayout.setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 452
 453         mProfileListAdapter.notifyDataSetChanged();
 454
 455         if (haveProfile) {
 456             if (newProfile.permitPosting()) {
 457                 b.toolbar.setSubtitle(null);
 458                 b.btnAddTransaction.show();
 459             }
 460             else {
 461                 b.toolbar.setSubtitle(R.string.profile_subtitle_read_only);
 462                 b.btnAddTransaction.hide();
 463             }
 464         }
 465         else {
 466             b.toolbar.setSubtitle(null);
 467             b.btnAddTransaction.hide();
 468         }
 469
 470         updateLastUpdateTextFromDB();
 471
 472         if (sameProfileId) {
 473             Logger.debug(TAG, String.format(Locale.ROOT, "Short-cut profile 'changed' to %d",
 474                     newProfile.getId()));
 475             return;
 476         }
 477
 478         mainModel.getAccountFilter()
 479                  .observe(this, this::onAccountFilterChanged);
 480
 481         mainModel.stopTransactionsRetrieval();
 482         mainModel.clearTransactions();
 483     }
 484     private void onAccountFilterChanged(String accFilter) {
 485         Logger.debug(TAG, "account filter changed, reloading transactions");
 486 //                     mainModel.scheduleTransactionListReload();
 487         LiveData<List<TransactionWithAccounts>> transactions =
 488                 new MutableLiveData<>(new ArrayList<>());
 489         if (profile != null) {
 490             if (accFilter == null || accFilter.isEmpty()) {
 491                 transactions = DB.get()
 492                                  .getTransactionDAO()
 493                                  .getAllWithAccounts(profile.getId());
 494             }
 495             else {
 496                 transactions = DB.get()
 497                                  .getTransactionDAO()
 498                                  .getAllWithAccountsFiltered(profile.getId(), accFilter);
 499             }
 500         }
 501
 502         transactions.observe(this, list -> {
 503             Logger.debug(TAG,
 504                     String.format(Locale.ROOT, "got transaction list from DB (%d transactions)",
 505                             list.size()));
 506
 507             if (converterThread != null)
 508                 converterThread.interrupt();
 509             converterThread = new ConverterThread(mainModel, list, accFilter);
 510             converterThread.start();
 511         });
 512     }
 513     private void profileThemeChanged() {
 514         // un-hook all observed LiveData
 515         Data.removeProfileObservers(this);
 516         Data.profiles.removeObservers(this);
 517         Data.lastUpdateTransactionCount.removeObservers(this);
 518         Data.lastUpdateAccountCount.removeObservers(this);
 519         Data.lastUpdateDate.removeObservers(this);
 520
 521         Logger.debug(TAG, "profileThemeChanged(): recreating activity");
 522         recreate();
 523     }
 524     public void fabNewTransactionClicked(View view) {
 525         Intent intent = new Intent(this, NewTransactionActivity.class);
 526         intent.putExtra(ProfileThemedActivity.PARAM_PROFILE_ID, profile.getId());
 527         intent.putExtra(ProfileThemedActivity.PARAM_THEME, profile.getTheme());
 528         startActivity(intent);
 529         overridePendingTransition(R.anim.slide_in_up, R.anim.dummy);
 530     }
 531     public void markDrawerItemCurrent(int id) {
 532         TextView item = b.drawerLayout.findViewById(id);
 533         item.setBackgroundColor(Colors.tableRowDarkBG);
 534
 535         for (int i = 0; i < b.navActions.getChildCount(); i++) {
 536             View view = b.navActions.getChildAt(i);
 537             if (view.getId() != id) {
 538                 view.setBackgroundColor(Color.TRANSPARENT);
 539             }
 540         }
 541     }
 542     public void onAccountSummaryClicked(View view) {
 543         b.drawerLayout.closeDrawers();
 544
 545         showAccountSummaryFragment();
 546     }
 547     private void showAccountSummaryFragment() {
 548         b.mainPager.setCurrentItem(0, true);
 549         mainModel.getAccountFilter()
 550                  .setValue(null);
 551     }
 552     public void onLatestTransactionsClicked(View view) {
 553         b.drawerLayout.closeDrawers();
 554
 555         showTransactionsFragment(null);
 556     }
 557     public void showTransactionsFragment(String accName) {
 558         mainModel.getAccountFilter()
 559                  .setValue(accName);
 560         b.mainPager.setCurrentItem(1, true);
 561     }
 562     public void showAccountTransactions(String accountName) {
 563         mBackMeansToAccountList = true;
 564         showTransactionsFragment(accountName);
 565     }
 566     @Override
 567     public void onBackPressed() {
 568         if (b.drawerLayout.isDrawerOpen(GravityCompat.START)) {
 569             b.drawerLayout.closeDrawer(GravityCompat.START);
 570         }
 571         else {
 572             if (mBackMeansToAccountList && (b.mainPager.getCurrentItem() == 1)) {
 573                 mainModel.getAccountFilter()
 574                          .setValue(null);
 575                 showAccountSummaryFragment();
 576                 mBackMeansToAccountList = false;
 577             }
 578             else {
 579                 Logger.debug(TAG, String.format(Locale.ENGLISH, "manager stack: %d",
 580                         getSupportFragmentManager().getBackStackEntryCount()));
 581
 582                 super.onBackPressed();
 583             }
 584         }
 585     }
 586     public void updateLastUpdateTextFromDB() {
 587         if (profile == null)
 588             return;
 589
 590         DB.get()
 591           .getOptionDAO()
 592           .load(profile.getId(), Option.OPT_LAST_SCRAPE)
 593           .observe(this, opt -> {
 594               long lastUpdate = 0;
 595               if (opt != null) {
 596                   try {
 597                       lastUpdate = Long.parseLong(opt.getValue());
 598                   }
 599                   catch (NumberFormatException ex) {
 600                       Logger.debug(TAG, String.format("Error parsing '%s' as long", opt.getValue()),
 601                               ex);
 602                   }
 603               }
 604
 605               if (lastUpdate == 0) {
 606                   Data.lastUpdateDate.postValue(null);
 607               }
 608               else {
 609                   Data.lastUpdateDate.postValue(new Date(lastUpdate));
 610               }
 611
 612               scheduleDataRetrievalIfStale(lastUpdate);
 613           });
 614     }
 615     private void refreshLastUpdateInfo() {
 616         final int formatFlags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR |
 617                                 DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_NUMERIC_DATE;
 618         String templateForTransactions =
 619                 getResources().getString(R.string.transaction_count_summary);
 620         String templateForAccounts = getResources().getString(R.string.account_count_summary);
 621         Integer accountCount = Data.lastUpdateAccountCount.getValue();
 622         Integer transactionCount = Data.lastUpdateTransactionCount.getValue();
 623         Date lastUpdate = Data.lastUpdateDate.getValue();
 624         if (lastUpdate == null) {
 625             Data.lastTransactionsUpdateText.setValue("----");
 626             Data.lastAccountsUpdateText.setValue("----");
 627         }
 628         else {
 629             Data.lastTransactionsUpdateText.setValue(
 630                     String.format(Objects.requireNonNull(Data.locale.getValue()),
 631                             templateForTransactions,
 632                             transactionCount == null ? 0 : transactionCount,
 633                             DateUtils.formatDateTime(this, lastUpdate.getTime(), formatFlags)));
 634             Data.lastAccountsUpdateText.setValue(
 635                     String.format(Objects.requireNonNull(Data.locale.getValue()),
 636                             templateForAccounts, accountCount == null ? 0 : accountCount,
 637                             DateUtils.formatDateTime(this, lastUpdate.getTime(), formatFlags)));
 638         }
 639     }
 640     public void onStopTransactionRefreshClick(View view) {
 641         Logger.debug(TAG, "Cancelling transactions refresh");
 642         mainModel.stopTransactionsRetrieval();
 643         b.transactionListCancelDownload.setEnabled(false);
 644     }
 645     public void onRetrieveRunningChanged(Boolean running) {
 646         if (running) {
 647             b.transactionListCancelDownload.setEnabled(true);
 648             ColorStateList csl = Colors.getColorStateList();
 649             b.transactionListProgressBar.setIndeterminateTintList(csl);
 650             b.transactionListProgressBar.setProgressTintList(csl);
 651             b.transactionListProgressBar.setIndeterminate(true);
 652             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 653                 b.transactionListProgressBar.setProgress(0, false);
 654             }
 655             else {
 656                 b.transactionListProgressBar.setProgress(0);
 657             }
 658             b.transactionProgressLayout.setVisibility(View.VISIBLE);
 659         }
 660         else {
 661             b.transactionProgressLayout.setVisibility(View.GONE);
 662         }
 663     }
 664     public void onRetrieveProgress(@Nullable RetrieveTransactionsTask.Progress progress) {
 665         if (progress == null ||
 666             progress.getState() == RetrieveTransactionsTask.ProgressState.FINISHED)
 667         {
 668             Logger.debug(TAG, "progress: Done");
 669             b.transactionProgressLayout.setVisibility(View.GONE);
 670
 671             mainModel.transactionRetrievalDone();
 672
 673             String error = (progress == null) ? null : progress.getError();
 674             if (error != null) {
 675                 if (error.equals(RetrieveTransactionsTask.Result.ERR_JSON_PARSER_ERROR))
 676                     error = getResources().getString(R.string.err_json_parser_error);
 677
 678                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
 679                 builder.setMessage(error);
 680                 builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 681                     Logger.debug(TAG, "will start profile editor");
 682                     ProfileDetailActivity.start(this, profile);
 683                 });
 684                 builder.create()
 685                        .show();
 686                 return;
 687             }
 688
 689             return;
 690         }
 691
 692
 693         b.transactionListCancelDownload.setEnabled(true);
 694 //        ColorStateList csl = Colors.getColorStateList();
 695 //        progressBar.setIndeterminateTintList(csl);
 696 //        progressBar.setProgressTintList(csl);
 697 //        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 698 //            progressBar.setProgress(0, false);
 699 //        else
 700 //            progressBar.setProgress(0);
 701         b.transactionProgressLayout.setVisibility(View.VISIBLE);
 702
 703         if (progress.isIndeterminate() || (progress.getTotal() <= 0)) {
 704             b.transactionListProgressBar.setIndeterminate(true);
 705             Logger.debug(TAG, "progress: indeterminate");
 706         }
 707         else {
 708             if (b.transactionListProgressBar.isIndeterminate()) {
 709                 b.transactionListProgressBar.setIndeterminate(false);
 710             }
 711 //            Logger.debug(TAG,
 712 //                    String.format(Locale.US, "progress: %d/%d", progress.getProgress(),
 713 //                    progress.getTotal
 714 //                    ()));
 715             b.transactionListProgressBar.setMax(progress.getTotal());
 716             // for some reason animation doesn't work - no progress is shown (stick at 0)
 717             // on lineageOS 14.1 (Nougat, 7.1.2)
 718             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 719                 b.transactionListProgressBar.setProgress(progress.getProgress(), false);
 720             else
 721                 b.transactionListProgressBar.setProgress(progress.getProgress());
 722         }
 723     }
 724     public void fabShouldShow() {
 725         if ((profile != null) && profile.permitPosting() && !b.drawerLayout.isOpen())
 726             fabManager.showFab();
 727     }
 728     @Override
 729     public Context getContext() {
 730         return this;
 731     }
 732     @Override
 733     public void showManagedFab() {
 734         fabShouldShow();
 735     }
 736     @Override
 737     public void hideManagedFab() {
 738         fabManager.hideFab();
 739     }
 740     public static class SectionsPagerAdapter extends FragmentStateAdapter {
 741
 742         public SectionsPagerAdapter(@NonNull FragmentActivity fragmentActivity) {
 743             super(fragmentActivity);
 744         }
 745         @NotNull
 746         @Override
 747         public Fragment createFragment(int position) {
 748             Logger.debug(TAG, String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 749             switch (position) {
 750                 case 0:
 751 //                    debug(TAG, "Creating account summary fragment");
 752                     return new AccountSummaryFragment();
 753                 case 1:
 754                     return new TransactionListFragment();
 755                 default:
 756                     throw new IllegalStateException(
 757                             String.format("Unexpected fragment index: " + "%d", position));
 758             }
 759         }
 760
 761         @Override
 762         public int getItemCount() {
 763             return 2;
 764         }
 765     }
 766
 767     static private class ConverterThread extends Thread {
 768         private final List<TransactionWithAccounts> list;
 769         private final MainModel model;
 770         private final String accFilter;
 771         public ConverterThread(@NonNull MainModel model,
 772                                @NonNull List<TransactionWithAccounts> list, String accFilter) {
 773             this.model = model;
 774             this.list = list;
 775             this.accFilter = accFilter;
 776         }
 777         @Override
 778         public void run() {
 779             TransactionAccumulator accumulator = new TransactionAccumulator(accFilter, accFilter);
 780
 781             for (TransactionWithAccounts tr : list) {
 782                 if (isInterrupted()) {
 783                     Logger.debug(TAG, "ConverterThread bailing out on interrupt");
 784                     return;
 785                 }
 786                 accumulator.put(new LedgerTransaction(tr));
 787             }
 788
 789             if (isInterrupted()) {
 790                 Logger.debug(TAG, "ConverterThread bailing out on interrupt");
 791                 return;
 792             }
 793
 794             Logger.debug(TAG, "ConverterThread publishing results");
 795
 796             Misc.onMainThread(() -> accumulator.publishResults(model));
 797         }
 798     }
 799 }