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

   1 /*
   2  * Copyright © 2020 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.Intent;
  21 import android.content.SharedPreferences;
  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.AsyncTask;
  29 import android.os.Build;
  30 import android.os.Bundle;
  31 import android.util.Log;
  32 import android.view.View;
  33 import android.view.ViewGroup;
  34 import android.view.ViewPropertyAnimator;
  35 import android.view.animation.AnimationUtils;
  36 import android.widget.LinearLayout;
  37 import android.widget.ProgressBar;
  38 import android.widget.TextView;
  39
  40 import androidx.annotation.NonNull;
  41 import androidx.appcompat.app.ActionBarDrawerToggle;
  42 import androidx.appcompat.widget.Toolbar;
  43 import androidx.core.view.GravityCompat;
  44 import androidx.drawerlayout.widget.DrawerLayout;
  45 import androidx.fragment.app.Fragment;
  46 import androidx.fragment.app.FragmentManager;
  47 import androidx.fragment.app.FragmentPagerAdapter;
  48 import androidx.recyclerview.widget.LinearLayoutManager;
  49 import androidx.recyclerview.widget.RecyclerView;
  50 import androidx.viewpager.widget.ViewPager;
  51
  52 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  53 import com.google.android.material.snackbar.Snackbar;
  54
  55 import net.ktnx.mobileledger.R;
  56 import net.ktnx.mobileledger.async.DbOpQueue;
  57 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  58 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  59 import net.ktnx.mobileledger.model.Data;
  60 import net.ktnx.mobileledger.model.LedgerAccount;
  61 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  62 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  63 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  64 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  65 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  66 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  67 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  68 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  69 import net.ktnx.mobileledger.utils.Colors;
  70 import net.ktnx.mobileledger.utils.GetOptCallback;
  71 import net.ktnx.mobileledger.utils.LockHolder;
  72 import net.ktnx.mobileledger.utils.Logger;
  73 import net.ktnx.mobileledger.utils.MLDB;
  74
  75 import org.jetbrains.annotations.NotNull;
  76
  77 import java.text.DateFormat;
  78 import java.util.ArrayList;
  79 import java.util.Date;
  80 import java.util.List;
  81 import java.util.Locale;
  82
  83 import static net.ktnx.mobileledger.utils.Logger.debug;
  84
  85 /*
  86  * TODO: reports
  87  *  */
  88
  89 public class MainActivity extends ProfileThemedActivity {
  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 String PREF_THEME_ID = "themeId";
  94     public AccountSummaryFragment mAccountSummaryFragment;
  95     DrawerLayout drawer;
  96     private View profileListHeadMore, profileListHeadCancel, profileListHeadAddProfile;
  97     private View bTransactionListCancelDownload;
  98     private SectionsPagerAdapter mSectionsPagerAdapter;
  99     private ViewPager mViewPager;
 100     private FloatingActionButton fab;
 101     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 102     private int mCurrentPage;
 103     private boolean mBackMeansToAccountList = false;
 104     private Toolbar mToolbar;
 105     private DrawerLayout.SimpleDrawerListener drawerListener;
 106     private ActionBarDrawerToggle barDrawerToggle;
 107     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 108     private MobileLedgerProfile profile;
 109     @Override
 110     protected void onStart() {
 111         super.onStart();
 112
 113         Logger.debug("MainActivity", "onStart()");
 114
 115         mViewPager.setCurrentItem(mCurrentPage, false);
 116     }
 117     @Override
 118     protected void onSaveInstanceState(@NotNull Bundle outState) {
 119         super.onSaveInstanceState(outState);
 120         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 121         if (Data.accountFilter.getValue() != null)
 122             outState.putString(STATE_ACC_FILTER, Data.accountFilter.getValue());
 123     }
 124     @Override
 125     protected void onDestroy() {
 126         mSectionsPagerAdapter = null;
 127         RecyclerView root = findViewById(R.id.nav_profile_list);
 128         if (root != null)
 129             root.setAdapter(null);
 130         if (drawer != null)
 131             drawer.removeDrawerListener(drawerListener);
 132         drawerListener = null;
 133         if (drawer != null)
 134             drawer.removeDrawerListener(barDrawerToggle);
 135         barDrawerToggle = null;
 136         if (mViewPager != null)
 137             mViewPager.removeOnPageChangeListener(pageChangeListener);
 138         pageChangeListener = null;
 139         super.onDestroy();
 140     }
 141     @Override
 142     protected void setupProfileColors() {
 143         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 144         int profileColor = prefs.getInt(PREF_THEME_ID, -2);
 145         if (profileColor == -2)
 146             profileColor = Data.retrieveCurrentThemeIdFromDb();
 147         Colors.setupTheme(this, profileColor);
 148         Colors.profileThemeId = profileColor;
 149         storeThemeIdInPrefs(profileColor);
 150     }
 151     @Override
 152     protected void onResume() {
 153         super.onResume();
 154         fabShouldShow();
 155     }
 156     @Override
 157     protected void onCreate(Bundle savedInstanceState) {
 158         debug("MainActivity", "onCreate()/entry");
 159         super.onCreate(savedInstanceState);
 160         debug("MainActivity", "onCreate()/after super");
 161         setContentView(R.layout.activity_main);
 162
 163         fab = findViewById(R.id.btn_add_transaction);
 164         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 165         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 166         LinearLayout profileListHeadMoreAndCancel =
 167                 findViewById(R.id.nav_profile_list_head_buttons);
 168         profileListHeadAddProfile = findViewById(R.id.nav_new_profile_button);
 169         drawer = findViewById(R.id.drawer_layout);
 170         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 171         mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
 172         mViewPager = findViewById(R.id.root_frame);
 173
 174         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 175         if (extra != null && savedInstanceState == null)
 176             savedInstanceState = extra;
 177
 178
 179         mToolbar = findViewById(R.id.toolbar);
 180         setSupportActionBar(mToolbar);
 181
 182         Data.profile.observe(this, this::onProfileChanged);
 183
 184         Data.profiles.observe(this, this::onProfileListChanged);
 185
 186         if (barDrawerToggle == null) {
 187             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 188                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 189             drawer.addDrawerListener(barDrawerToggle);
 190         }
 191         barDrawerToggle.syncState();
 192
 193         try {
 194             PackageInfo pi = getApplicationContext().getPackageManager()
 195                                                     .getPackageInfo(getPackageName(), 0);
 196             ((TextView) findViewById(R.id.nav_upper).findViewById(
 197                     R.id.drawer_version_text)).setText(pi.versionName);
 198             ((TextView) findViewById(R.id.no_profiles_layout).findViewById(
 199                     R.id.drawer_version_text)).setText(pi.versionName);
 200         }
 201         catch (Exception e) {
 202             e.printStackTrace();
 203         }
 204
 205         markDrawerItemCurrent(R.id.nav_account_summary);
 206
 207         mViewPager.setAdapter(mSectionsPagerAdapter);
 208
 209         if (pageChangeListener == null) {
 210             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 211                 @Override
 212                 public void onPageSelected(int position) {
 213                     mCurrentPage = position;
 214                     switch (position) {
 215                         case 0:
 216                             markDrawerItemCurrent(R.id.nav_account_summary);
 217                             break;
 218                         case 1:
 219                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 220                             break;
 221                         default:
 222                             Log.e("MainActivity",
 223                                     String.format("Unexpected page index %d", position));
 224                     }
 225
 226                     super.onPageSelected(position);
 227                 }
 228             };
 229             mViewPager.addOnPageChangeListener(pageChangeListener);
 230         }
 231
 232         mCurrentPage = 0;
 233         if (savedInstanceState != null) {
 234             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 235             if (currentPage != -1) {
 236                 mCurrentPage = currentPage;
 237             }
 238             Data.accountFilter.setValue(savedInstanceState.getString(STATE_ACC_FILTER, null));
 239         }
 240
 241         Data.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
 242
 243         findViewById(R.id.btn_no_profiles_add).setOnClickListener(
 244                 v -> startEditProfileActivity(null));
 245
 246         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 247
 248         findViewById(R.id.nav_new_profile_button).setOnClickListener(
 249                 v -> startEditProfileActivity(null));
 250
 251         RecyclerView root = findViewById(R.id.nav_profile_list);
 252         if (root == null)
 253             throw new RuntimeException("Can't get hold on the transaction value view");
 254
 255         if (mProfileListAdapter == null)
 256             mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 257         root.setAdapter(mProfileListAdapter);
 258
 259         mProfileListAdapter.editingProfiles.observe(this, newValue -> {
 260             if (newValue) {
 261                 profileListHeadMore.setVisibility(View.GONE);
 262                 profileListHeadCancel.setVisibility(View.VISIBLE);
 263                 profileListHeadAddProfile.setVisibility(View.VISIBLE);
 264                 if (drawer.isDrawerOpen(GravityCompat.START)) {
 265                     profileListHeadMore.startAnimation(
 266                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 267                     profileListHeadCancel.startAnimation(
 268                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 269                     profileListHeadAddProfile.startAnimation(
 270                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 271                 }
 272             }
 273             else {
 274                 profileListHeadCancel.setVisibility(View.GONE);
 275                 profileListHeadMore.setVisibility(View.VISIBLE);
 276                 profileListHeadAddProfile.setVisibility(View.GONE);
 277                 if (drawer.isDrawerOpen(GravityCompat.START)) {
 278                     profileListHeadCancel.startAnimation(
 279                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 280                     profileListHeadMore.startAnimation(
 281                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 282                     profileListHeadAddProfile.startAnimation(
 283                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 284                 }
 285             }
 286
 287             mProfileListAdapter.notifyDataSetChanged();
 288         });
 289
 290         LinearLayoutManager llm = new LinearLayoutManager(this);
 291
 292         llm.setOrientation(RecyclerView.VERTICAL);
 293         root.setLayoutManager(llm);
 294
 295         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 296         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 297         profileListHeadMoreAndCancel.setOnClickListener(
 298                 (v) -> mProfileListAdapter.flipEditingProfiles());
 299         if (drawerListener == null) {
 300             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 301                 @Override
 302                 public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
 303                     if (slideOffset > 0.2)
 304                         fabHide();
 305                 }
 306                 @Override
 307                 public void onDrawerClosed(View drawerView) {
 308                     super.onDrawerClosed(drawerView);
 309                     mProfileListAdapter.setAnimationsEnabled(false);
 310                     mProfileListAdapter.editingProfiles.setValue(false);
 311                     Data.drawerOpen.setValue(false);
 312                     fabShouldShow();
 313                 }
 314                 @Override
 315                 public void onDrawerOpened(View drawerView) {
 316                     super.onDrawerOpened(drawerView);
 317                     mProfileListAdapter.setAnimationsEnabled(true);
 318                     Data.drawerOpen.setValue(true);
 319                     fabHide();
 320                 }
 321             };
 322             drawer.addDrawerListener(drawerListener);
 323         }
 324
 325         Data.drawerOpen.observe(this, open -> {
 326             if (open)
 327                 drawer.open();
 328             else
 329                 drawer.close();
 330         });
 331     }
 332     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 333         long now = new Date().getTime();
 334         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 335             if (lastUpdate == null)
 336                 debug("db::", "WEB data never fetched. scheduling a fetch");
 337             else
 338                 debug("db", String.format(Locale.ENGLISH,
 339                         "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 340                         lastUpdate.getTime() / 1000f, now / 1000f));
 341
 342             Data.scheduleTransactionListRetrieval(this);
 343         }
 344     }
 345     private void createShortcuts(List<MobileLedgerProfile> 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 (MobileLedgerProfile p : list) {
 353             if (shortcuts.size() >= sm.getMaxShortcutCountPerActivity())
 354                 break;
 355
 356             if (!p.isPostingPermitted())
 357                 continue;
 358
 359             final ShortcutInfo.Builder builder =
 360                     new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid());
 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("profile_uuid",
 366                                              p.getUuid()))
 367                                      .setRank(i)
 368                                      .build();
 369             shortcuts.add(si);
 370             i++;
 371         }
 372         sm.setDynamicShortcuts(shortcuts);
 373     }
 374     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
 375         if (newList == null) {
 376             // profiles not yet loaded from DB
 377             findViewById(R.id.loading_layout).setVisibility(View.VISIBLE);
 378             findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 379             findViewById(R.id.main_app_layout).setVisibility(View.GONE);
 380             return;
 381         }
 382
 383         if (newList.isEmpty()) {
 384             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 385             findViewById(R.id.main_app_layout).setVisibility(View.GONE);
 386             findViewById(R.id.loading_layout).setVisibility(View.GONE);
 387             return;
 388         }
 389
 390         findViewById(R.id.main_app_layout).setVisibility(View.VISIBLE);
 391         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 392         findViewById(R.id.loading_layout).setVisibility(View.GONE);
 393
 394         findViewById(R.id.nav_profile_list).setMinimumHeight(
 395                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 396
 397         debug("profiles", "profile list changed");
 398         mProfileListAdapter.notifyDataSetChanged();
 399
 400         createShortcuts(newList);
 401     }
 402     /**
 403      * called when the current profile has changed
 404      */
 405     private void onProfileChanged(MobileLedgerProfile profile) {
 406         boolean haveProfile = profile != null;
 407
 408         if (haveProfile)
 409             setTitle(profile.getName());
 410         else
 411             setTitle(R.string.app_name);
 412
 413         this.profile = profile;
 414
 415         int newProfileTheme = haveProfile ? profile.getThemeHue() : -1;
 416         if (newProfileTheme != Colors.profileThemeId) {
 417             debug("profiles",
 418                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 419                             newProfileTheme));
 420             Colors.profileThemeId = newProfileTheme;
 421             profileThemeChanged();
 422             // profileThemeChanged would restart the activity, so no need to reload the
 423             // data sets below
 424             return;
 425         }
 426
 427         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 428         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 429
 430         mProfileListAdapter.notifyDataSetChanged();
 431
 432         Data.transactions.clear();
 433         debug("transactions", "requesting list reload");
 434         TransactionListViewModel.scheduleTransactionListReload();
 435
 436         Data.accounts.clear();
 437         AccountSummaryViewModel.scheduleAccountListReload();
 438
 439         if (haveProfile) {
 440             if (profile.isPostingPermitted()) {
 441                 mToolbar.setSubtitle(null);
 442                 fab.show();
 443             }
 444             else {
 445                 mToolbar.setSubtitle(R.string.profile_subtitle_read_only);
 446                 fab.hide();
 447             }
 448         }
 449         else {
 450             mToolbar.setSubtitle(null);
 451             fab.hide();
 452         }
 453
 454         updateLastUpdateTextFromDB();
 455     }
 456     private void updateLastUpdateDisplay(Date newValue) {
 457         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 458         TextView v = findViewById(R.id.transactions_last_update);
 459         if (newValue == null) {
 460             l.setVisibility(View.INVISIBLE);
 461             debug("main", "no last update date :(");
 462         }
 463         else {
 464             final String text = DateFormat.getDateTimeInstance()
 465                                           .format(newValue);
 466             v.setText(text);
 467             l.setVisibility(View.VISIBLE);
 468             debug("main", String.format("Date formatted: %s", text));
 469         }
 470
 471         scheduleDataRetrievalIfStale(newValue);
 472     }
 473     private void profileThemeChanged() {
 474         storeThemeIdInPrefs(profile.getThemeHue());
 475
 476         // un-hook all observed LiveData
 477         Data.profile.removeObservers(this);
 478         Data.profiles.removeObservers(this);
 479         Data.lastUpdateDate.removeObservers(this);
 480
 481         recreate();
 482     }
 483     private void storeThemeIdInPrefs(int themeId) {
 484         // store the new theme id in the preferences
 485         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 486         SharedPreferences.Editor e = prefs.edit();
 487         e.putInt(PREF_THEME_ID, themeId);
 488         e.apply();
 489     }
 490     public void startEditProfileActivity(MobileLedgerProfile profile) {
 491         Intent intent = new Intent(this, ProfileDetailActivity.class);
 492         Bundle args = new Bundle();
 493         if (profile != null) {
 494             int index = Data.getProfileIndex(profile);
 495             if (index != -1)
 496                 intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 497         }
 498         intent.putExtras(args);
 499         startActivity(intent, args);
 500     }
 501     private void setupProfile() {
 502         MLDB.getOption(MLDB.OPT_PROFILE_UUID, null, new GetOptCallback() {
 503             @Override
 504             protected void onResult(String profileUUID) {
 505                 MobileLedgerProfile startupProfile;
 506
 507                 startupProfile = Data.getProfile(profileUUID);
 508                 Data.setCurrentProfile(startupProfile);
 509             }
 510         });
 511     }
 512     public void fabNewTransactionClicked(View view) {
 513         Intent intent = new Intent(this, NewTransactionActivity.class);
 514         startActivity(intent);
 515         overridePendingTransition(R.anim.slide_in_up, R.anim.dummy);
 516     }
 517     public void markDrawerItemCurrent(int id) {
 518         TextView item = drawer.findViewById(id);
 519         item.setBackgroundColor(Colors.tableRowDarkBG);
 520
 521         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 522         for (int i = 0; i < actions.getChildCount(); i++) {
 523             View view = actions.getChildAt(i);
 524             if (view.getId() != id) {
 525                 view.setBackgroundColor(Color.TRANSPARENT);
 526             }
 527         }
 528     }
 529     public void onAccountSummaryClicked(View view) {
 530         drawer.closeDrawers();
 531
 532         showAccountSummaryFragment();
 533     }
 534     private void showAccountSummaryFragment() {
 535         mViewPager.setCurrentItem(0, true);
 536         Data.accountFilter.setValue(null);
 537     }
 538     public void onLatestTransactionsClicked(View view) {
 539         drawer.closeDrawers();
 540
 541         showTransactionsFragment((String) null);
 542     }
 543     private void showTransactionsFragment(String accName) {
 544         Data.accountFilter.setValue(accName);
 545         mViewPager.setCurrentItem(1, true);
 546     }
 547     private void showTransactionsFragment(LedgerAccount account) {
 548         showTransactionsFragment((account == null) ? null : account.getName());
 549     }
 550     public void showAccountTransactions(LedgerAccount account) {
 551         mBackMeansToAccountList = true;
 552         showTransactionsFragment(account);
 553     }
 554     @Override
 555     public void onBackPressed() {
 556         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 557         if (drawer.isDrawerOpen(GravityCompat.START)) {
 558             drawer.closeDrawer(GravityCompat.START);
 559         }
 560         else {
 561             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 562                 Data.accountFilter.setValue(null);
 563                 showAccountSummaryFragment();
 564                 mBackMeansToAccountList = false;
 565             }
 566             else {
 567                 debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 568                         getSupportFragmentManager().getBackStackEntryCount()));
 569
 570                 super.onBackPressed();
 571             }
 572         }
 573     }
 574     public void updateLastUpdateTextFromDB() {
 575         if (profile == null)
 576             return;
 577
 578         long last_update = profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L);
 579
 580         debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", last_update));
 581         if (last_update == 0) {
 582             Data.lastUpdateDate.postValue(null);
 583         }
 584         else {
 585             Data.lastUpdateDate.postValue(new Date(last_update));
 586         }
 587     }
 588     public void onStopTransactionRefreshClick(View view) {
 589         debug("interactive", "Cancelling transactions refresh");
 590         Data.stopTransactionsRetrieval();
 591         bTransactionListCancelDownload.setEnabled(false);
 592     }
 593     public void onRetrieveDone(String error) {
 594         Data.transactionRetrievalDone();
 595         findViewById(R.id.transaction_progress_layout).setVisibility(View.GONE);
 596
 597         if (error == null) {
 598             updateLastUpdateTextFromDB();
 599
 600             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 601             TransactionListViewModel.scheduleTransactionListReload();
 602         }
 603         else
 604             Snackbar.make(mViewPager, error, Snackbar.LENGTH_LONG)
 605                     .show();
 606     }
 607     public void onRetrieveStart() {
 608         ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
 609         bTransactionListCancelDownload.setEnabled(true);
 610         ColorStateList csl = Colors.getColorStateList();
 611         progressBar.setIndeterminateTintList(csl);
 612         progressBar.setProgressTintList(csl);
 613         progressBar.setIndeterminate(true);
 614         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 615             progressBar.setProgress(0, false);
 616         else
 617             progressBar.setProgress(0);
 618         findViewById(R.id.transaction_progress_layout).setVisibility(View.VISIBLE);
 619     }
 620     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 621         ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
 622         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 623             (progress.getTotal() == 0))
 624         {
 625             progressBar.setIndeterminate(true);
 626         }
 627         else {
 628             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 629                 progressBar.setMin(0);
 630             }
 631             progressBar.setMax(progress.getTotal());
 632             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 633                 progressBar.setProgress(progress.getProgress(), true);
 634             }
 635             else
 636                 progressBar.setProgress(progress.getProgress());
 637             progressBar.setIndeterminate(false);
 638         }
 639     }
 640     public void fabShouldShow() {
 641         if ((profile != null) && profile.isPostingPermitted() && !drawer.isOpen())
 642             fab.show();
 643         else
 644             fabHide();
 645     }
 646     public void fabHide() {
 647         fab.hide();
 648     }
 649     public void onAccountSummaryRowViewClicked(View view) {
 650         ViewGroup row;
 651         switch (view.getId()) {
 652             case R.id.account_expander:
 653                 row = (ViewGroup) view.getParent()
 654                                       .getParent()
 655                                       .getParent();
 656                 break;
 657             case R.id.account_expander_container:
 658             case R.id.account_row_acc_name:
 659                 row = (ViewGroup) view.getParent()
 660                                       .getParent();
 661                 break;
 662             default:
 663                 row = (ViewGroup) view.getParent();
 664                 break;
 665         }
 666
 667         LedgerAccount acc = (LedgerAccount) row.getTag();
 668         switch (view.getId()) {
 669             case R.id.account_row_acc_name:
 670             case R.id.account_expander:
 671             case R.id.account_expander_container:
 672                 debug("accounts", "Account expander clicked");
 673                 if (!acc.hasSubAccounts())
 674                     return;
 675
 676                 boolean wasExpanded = acc.isExpanded();
 677
 678                 View arrow = row.findViewById(R.id.account_expander_container);
 679
 680                 arrow.clearAnimation();
 681                 ViewPropertyAnimator animator = arrow.animate();
 682
 683                 acc.toggleExpanded();
 684                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 685                         new Object[]{acc.isExpanded(), acc.getName(), profile.getUuid()
 686                         });
 687
 688                 if (wasExpanded) {
 689                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 690                     arrow.setRotation(0);
 691                     animator.rotationBy(180);
 692
 693                     // removing all child accounts from the view
 694                     int start = -1, count = 0;
 695                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 696                         for (int i = 0; i < Data.accounts.size(); i++) {
 697                             if (acc.isParentOf(Data.accounts.get(i))) {
 698 //                                debug("accounts", String.format("Found a child '%s' at position
 699 //                                %d",
 700 //                                        Data.accounts.get(i).getName(), i));
 701                                 if (start == -1) {
 702                                     start = i;
 703                                 }
 704                                 count++;
 705                             }
 706                             else {
 707                                 if (start != -1) {
 708 //                                    debug("accounts",
 709 //                                            String.format("Found a non-child '%s' at position %d",
 710 //                                                    Data.accounts.get(i).getName(), i));
 711                                     break;
 712                                 }
 713                             }
 714                         }
 715
 716                         if (start != -1) {
 717                             for (int j = 0; j < count; j++) {
 718 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 719 //                                        Data.accounts.get(start).getName()));
 720                                 Data.accounts.removeQuietly(start);
 721                             }
 722
 723                             mAccountSummaryFragment.modelAdapter.notifyItemRangeRemoved(start,
 724                                     count);
 725                         }
 726                     }
 727                 }
 728                 else {
 729                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 730                     arrow.setRotation(180);
 731                     animator.rotationBy(-180);
 732                     List<LedgerAccount> children = profile.loadVisibleChildAccountsOf(acc);
 733                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 734                         int parentPos = Data.accounts.indexOf(acc);
 735                         if (parentPos != -1) {
 736                             // may have disappeared in a concurrent refresh operation
 737                             Data.accounts.addAllQuietly(parentPos + 1, children);
 738                             mAccountSummaryFragment.modelAdapter.notifyItemRangeInserted(
 739                                     parentPos + 1, children.size());
 740                         }
 741                     }
 742                 }
 743                 break;
 744             case R.id.account_row_acc_amounts:
 745                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 746                     acc.toggleAmountsExpanded();
 747                     DbOpQueue.add(
 748                             "update accounts set amounts_expanded=? where name=? and profile=?",
 749                             new Object[]{acc.amountsExpanded(), acc.getName(), profile.getUuid()
 750                             });
 751                     Data.accounts.triggerItemChangedNotification(acc);
 752                 }
 753                 break;
 754         }
 755     }
 756
 757     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 758
 759         SectionsPagerAdapter(FragmentManager fm) {
 760             super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
 761         }
 762
 763         @NotNull
 764         @Override
 765         public Fragment getItem(int position) {
 766             debug("main", String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 767             switch (position) {
 768                 case 0:
 769 //                    debug("flow", "Creating account summary fragment");
 770                     return mAccountSummaryFragment = new AccountSummaryFragment();
 771                 case 1:
 772                     return new TransactionListFragment();
 773                 default:
 774                     throw new IllegalStateException(
 775                             String.format("Unexpected fragment index: " + "%d", position));
 776             }
 777         }
 778
 779         @Override
 780         public int getCount() {
 781             return 2;
 782         }
 783     }
 784 }