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