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