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

   1 /*
   2  * Copyright © 2019 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.pm.PackageInfo;
  22 import android.content.pm.ShortcutInfo;
  23 import android.content.pm.ShortcutManager;
  24 import android.content.res.ColorStateList;
  25 import android.graphics.Color;
  26 import android.graphics.drawable.Icon;
  27 import android.os.AsyncTask;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.util.Log;
  31 import android.view.View;
  32 import android.view.ViewGroup;
  33 import android.view.ViewPropertyAnimator;
  34 import android.view.animation.Animation;
  35 import android.view.animation.AnimationUtils;
  36 import android.widget.LinearLayout;
  37 import android.widget.ProgressBar;
  38 import android.widget.TextView;
  39 import android.widget.Toast;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42
  43 import net.ktnx.mobileledger.R;
  44 import net.ktnx.mobileledger.async.DbOpQueue;
  45 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  46 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  47 import net.ktnx.mobileledger.model.Data;
  48 import net.ktnx.mobileledger.model.LedgerAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  51 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  52 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  53 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  54 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  55 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  56 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  57 import net.ktnx.mobileledger.utils.Colors;
  58 import net.ktnx.mobileledger.utils.LockHolder;
  59 import net.ktnx.mobileledger.utils.MLDB;
  60
  61 import org.jetbrains.annotations.NotNull;
  62
  63 import java.lang.ref.WeakReference;
  64 import java.text.DateFormat;
  65 import java.util.ArrayList;
  66 import java.util.Date;
  67 import java.util.List;
  68 import java.util.Observer;
  69
  70 import androidx.appcompat.app.ActionBarDrawerToggle;
  71 import androidx.appcompat.widget.Toolbar;
  72 import androidx.core.view.GravityCompat;
  73 import androidx.drawerlayout.widget.DrawerLayout;
  74 import androidx.fragment.app.Fragment;
  75 import androidx.fragment.app.FragmentManager;
  76 import androidx.fragment.app.FragmentPagerAdapter;
  77 import androidx.recyclerview.widget.LinearLayoutManager;
  78 import androidx.recyclerview.widget.RecyclerView;
  79 import androidx.viewpager.widget.ViewPager;
  80
  81 import static net.ktnx.mobileledger.utils.Logger.debug;
  82
  83 public class MainActivity extends ProfileThemedActivity {
  84     public static final String STATE_CURRENT_PAGE = "current_page";
  85     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  86     public static final String STATE_ACC_FILTER = "account_filter";
  87     public AccountSummaryFragment mAccountSummaryFragment;
  88     DrawerLayout drawer;
  89     private LinearLayout profileListContainer;
  90     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  91     private LinearLayout profileListHeadMoreAndCancel;
  92     private FragmentManager fragmentManager;
  93     private TextView tvLastUpdate;
  94     private RetrieveTransactionsTask retrieveTransactionsTask;
  95     private View bTransactionListCancelDownload;
  96     private ProgressBar progressBar;
  97     private LinearLayout progressLayout;
  98     private SectionsPagerAdapter mSectionsPagerAdapter;
  99     private ViewPager mViewPager;
 100     private FloatingActionButton fab;
 101     private boolean profileModificationEnabled = false;
 102     private boolean profileListExpanded = false;
 103     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 104     private int mCurrentPage;
 105     private String mAccountFilter;
 106     private boolean mBackMeansToAccountList = false;
 107     private Observer profileObserver;
 108     private Observer profilesObserver;
 109     private Toolbar mToolbar;
 110     private DrawerLayout.SimpleDrawerListener drawerListener;
 111     private ActionBarDrawerToggle barDrawerToggle;
 112     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 113     private Observer editingProfilesObserver;
 114     @Override
 115     protected void onStart() {
 116         super.onStart();
 117
 118         debug("flow", "MainActivity.onStart()");
 119         mViewPager.setCurrentItem(mCurrentPage, false);
 120         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 121         else Data.accountFilter.setValue(null);
 122
 123     }
 124     @Override
 125     protected void onSaveInstanceState(Bundle outState) {
 126         super.onSaveInstanceState(outState);
 127         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 128         if (mAccountFilter != null)
 129             outState.putString(STATE_ACC_FILTER, mAccountFilter);
 130     }
 131     @Override
 132     protected void onDestroy() {
 133         mSectionsPagerAdapter = null;
 134         Data.profile.deleteObserver(profileObserver);
 135         profileObserver = null;
 136         Data.profiles.deleteObserver(profilesObserver);
 137         profilesObserver = null;
 138         RecyclerView root = findViewById(R.id.nav_profile_list);
 139         if (root != null) root.setAdapter(null);
 140         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 141         drawerListener = null;
 142         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 143         barDrawerToggle = null;
 144         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 145         pageChangeListener = null;
 146         if (mProfileListAdapter != null)
 147             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 148         editingProfilesObserver = null;
 149         super.onDestroy();
 150     }
 151     @Override
 152     protected void onCreate(Bundle savedInstanceState) {
 153         super.onCreate(savedInstanceState);
 154         debug("flow", "MainActivity.onCreate()");
 155         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 156         Colors.setupTheme(this, profileColor);
 157         Colors.profileThemeId = profileColor;
 158         setContentView(R.layout.activity_main);
 159
 160         fab = findViewById(R.id.btn_add_transaction);
 161         profileListContainer = findViewById(R.id.nav_profile_list_container);
 162         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 163         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 164         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 165         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 166         drawer = findViewById(R.id.drawer_layout);
 167         tvLastUpdate = findViewById(R.id.transactions_last_update);
 168         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 169         progressBar = findViewById(R.id.transaction_list_progress_bar);
 170         progressLayout = findViewById(R.id.transaction_progress_layout);
 171         fragmentManager = getSupportFragmentManager();
 172         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 173         mViewPager = findViewById(R.id.root_frame);
 174
 175         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 176         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 177
 178
 179         mToolbar = findViewById(R.id.toolbar);
 180         setSupportActionBar(mToolbar);
 181
 182         if (profileObserver == null) {
 183             profileObserver = (o, arg) -> onProfileChanged(arg);
 184             Data.profile.addObserver(profileObserver);
 185         }
 186
 187         if (profilesObserver == null) {
 188             profilesObserver = (o, arg) -> onProfileListChanged(arg);
 189             Data.profiles.addObserver(profilesObserver);
 190         }
 191
 192         if (barDrawerToggle == null) {
 193             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 194                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 195             drawer.addDrawerListener(barDrawerToggle);
 196         }
 197         barDrawerToggle.syncState();
 198
 199         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 200
 201         try {
 202             PackageInfo pi =
 203                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 204             ver.setText(pi.versionName);
 205         }
 206         catch (Exception e) {
 207             e.printStackTrace();
 208         }
 209
 210         if (progressBar == null)
 211             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 212         if (progressLayout == null) throw new RuntimeException(
 213                 "Can't get hold on the transaction value progress bar layout");
 214
 215         markDrawerItemCurrent(R.id.nav_account_summary);
 216
 217         mViewPager.setAdapter(mSectionsPagerAdapter);
 218
 219         if (pageChangeListener == null) {
 220             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 221                 @Override
 222                 public void onPageSelected(int position) {
 223                     switch (position) {
 224                         case 0:
 225                             markDrawerItemCurrent(R.id.nav_account_summary);
 226                             break;
 227                         case 1:
 228                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 229                             break;
 230                         default:
 231                             Log.e("MainActivity",
 232                                     String.format("Unexpected page index %d", position));
 233                     }
 234
 235                     super.onPageSelected(position);
 236                 }
 237             };
 238             mViewPager.addOnPageChangeListener(pageChangeListener);
 239         }
 240
 241         mCurrentPage = 0;
 242         if (savedInstanceState != null) {
 243             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 244             if (currentPage != -1) {
 245                 mCurrentPage = currentPage;
 246             }
 247             mAccountFilter = savedInstanceState.getString(STATE_ACC_FILTER, null);
 248         }
 249         else mAccountFilter = null;
 250
 251         Data.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
 252
 253         findViewById(R.id.btn_no_profiles_add)
 254                 .setOnClickListener(v -> startEditProfileActivity(null));
 255
 256         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 257
 258         findViewById(R.id.nav_new_profile_button)
 259                 .setOnClickListener(v -> startEditProfileActivity(null));
 260
 261         RecyclerView root = findViewById(R.id.nav_profile_list);
 262         if (root == null)
 263             throw new RuntimeException("Can't get hold on the transaction value view");
 264
 265         if (mProfileListAdapter == null) mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 266         root.setAdapter(mProfileListAdapter);
 267
 268         if (editingProfilesObserver == null) {
 269             editingProfilesObserver = (o, arg) -> {
 270                 if (mProfileListAdapter.isEditingProfiles()) {
 271                     profileListHeadArrow.clearAnimation();
 272                     profileListHeadArrow.setVisibility(View.GONE);
 273                     profileListHeadMore.setVisibility(View.GONE);
 274                     profileListHeadCancel.setVisibility(View.VISIBLE);
 275                 }
 276                 else {
 277                     profileListHeadArrow.setRotation(180f);
 278                     profileListHeadArrow.setVisibility(View.VISIBLE);
 279                     profileListHeadCancel.setVisibility(View.GONE);
 280                     profileListHeadMore.setVisibility(View.GONE);
 281                     profileListHeadMore
 282                             .setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 283                 }
 284             };
 285             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 286         }
 287
 288         LinearLayoutManager llm = new LinearLayoutManager(this);
 289
 290         llm.setOrientation(RecyclerView.VERTICAL);
 291         root.setLayoutManager(llm);
 292
 293         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 294         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 295         profileListHeadMoreAndCancel
 296                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 297
 298         if (drawerListener == null) {
 299             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 300                 @Override
 301                 public void onDrawerClosed(View drawerView) {
 302                     super.onDrawerClosed(drawerView);
 303                     collapseProfileList();
 304                 }
 305             };
 306             drawer.addDrawerListener(drawerListener);
 307         }
 308
 309         findViewById(R.id.nav_profile_list_head_layout)
 310                 .setOnClickListener(this::navProfilesHeadClicked);
 311         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 312         setupProfile();
 313         onProfileChanged(null);
 314
 315         updateLastUpdateTextFromDB();
 316     }
 317     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 318         long now = new Date().getTime();
 319         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 320             if (lastUpdate == null) debug("db::", "WEB data never fetched. scheduling a fetch");
 321             else debug("db",
 322                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 323                             lastUpdate.getTime() / 1000f, now / 1000f));
 324
 325             scheduleTransactionListRetrieval();
 326         }
 327     }
 328     private void createShortcuts() {
 329         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;
 330
 331         List<ShortcutInfo> shortcuts = new ArrayList<>();
 332         try (LockHolder lh = Data.profiles.lockForReading()) {
 333             for (int i = 0; i < Data.profiles.size(); i++) {
 334                 MobileLedgerProfile p = Data.profiles.get(i);
 335                 if (!p.isPostingPermitted()) continue;
 336
 337                 ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 338                         .setShortLabel(p.getName())
 339                         .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 340                         .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 341                                 NewTransactionActivity.class).putExtra("profile_uuid", p.getUuid()))
 342                         .setRank(i).build();
 343                 shortcuts.add(si);
 344             }
 345         }
 346         ShortcutManager sm = getSystemService(ShortcutManager.class);
 347         sm.setDynamicShortcuts(shortcuts);
 348     }
 349     private void onProfileListChanged(Object arg) {
 350         findViewById(R.id.nav_profile_list).setMinimumHeight(
 351                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 352                        Data.profiles.size()));
 353
 354         debug("profiles", "profile list changed");
 355         if (arg == null) mProfileListAdapter.notifyDataSetChanged();
 356         else mProfileListAdapter.notifyItemChanged((int) arg);
 357
 358         createShortcuts();
 359     }
 360     private void onProfileChanged(Object arg) {
 361         MobileLedgerProfile profile = Data.profile.get();
 362         MainActivity.this.runOnUiThread(() -> {
 363
 364             boolean haveProfile = profile != null;
 365             findViewById(R.id.no_profiles_layout)
 366                     .setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 367             findViewById(R.id.pager_layout)
 368                     .setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 369
 370             Data.transactions.clear();
 371             debug("transactions", "requesting list reload");
 372             TransactionListViewModel.scheduleTransactionListReload();
 373
 374             Data.accounts.clear();
 375             AccountSummaryViewModel.scheduleAccountListReload();
 376
 377             if (profile == null) MainActivity.this.setTitle(R.string.app_name);
 378             else MainActivity.this.setTitle(profile.getName());
 379             MainActivity.this.updateLastUpdateTextFromDB();
 380             int old_index = -1;
 381             int new_index = -1;
 382             if (arg != null) {
 383                 MobileLedgerProfile old = (MobileLedgerProfile) arg;
 384                 old_index = Data.getProfileIndex(old);
 385                 new_index = Data.getProfileIndex(profile);
 386             }
 387
 388             if ((old_index != -1) && (new_index != -1)) {
 389                 mProfileListAdapter.notifyItemChanged(old_index);
 390                 mProfileListAdapter.notifyItemChanged(new_index);
 391             }
 392             else mProfileListAdapter.notifyDataSetChanged();
 393
 394             MainActivity.this.collapseProfileList();
 395
 396             int newProfileTheme = (profile == null) ? -1 : profile.getThemeId();
 397             if (newProfileTheme != Colors.profileThemeId) {
 398                 debug("profiles", String.format("profile theme %d → %d", Colors.profileThemeId,
 399                         newProfileTheme));
 400                 MainActivity.this.profileThemeChanged();
 401                 Colors.profileThemeId = newProfileTheme;
 402                 // profileThemeChanged would restart the activity, so no need to reload the
 403                 // data sets below
 404                 return;
 405             }
 406             drawer.closeDrawers();
 407
 408             if (profile == null) {
 409                 mToolbar.setSubtitle(null);
 410                 fab.hide();
 411             }
 412             else {
 413                 if (profile.isPostingPermitted()) {
 414                     mToolbar.setSubtitle(null);
 415                     fab.show();
 416                 }
 417                 else {
 418                     mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 419                     fab.hide();
 420                 }
 421             }
 422
 423             updateLastUpdateTextFromDB();
 424         });
 425     }
 426     private void updateLastUpdateDisplay(Date newValue) {
 427         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 428         TextView v = findViewById(R.id.transactions_last_update);
 429         if (newValue == null) {
 430             l.setVisibility(View.INVISIBLE);
 431             debug("main", "no last update date :(");
 432         }
 433         else {
 434             final String text = DateFormat.getDateTimeInstance().format(newValue);
 435             v.setText(text);
 436             l.setVisibility(View.VISIBLE);
 437             debug("main", String.format("Date formatted: %s", text));
 438         }
 439
 440         scheduleDataRetrievalIfStale(newValue);
 441     }
 442     @Override
 443     public void finish() {
 444         if (profilesObserver != null) {
 445             Data.profiles.deleteObserver(profilesObserver);
 446             profilesObserver = null;
 447         }
 448
 449         if (profileObserver != null) {
 450             Data.profile.deleteObserver(profileObserver);
 451             profileObserver = null;
 452         }
 453
 454         super.finish();
 455     }
 456     private void profileThemeChanged() {
 457         setupProfileColors();
 458
 459         Bundle bundle = new Bundle();
 460         onSaveInstanceState(bundle);
 461         // restart activity to reflect theme change
 462         finish();
 463         Intent intent = new Intent(this, this.getClass());
 464         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 465         startActivity(intent);
 466     }
 467     public void startEditProfileActivity(MobileLedgerProfile profile) {
 468         Intent intent = new Intent(this, ProfileDetailActivity.class);
 469         Bundle args = new Bundle();
 470         if (profile != null) {
 471             int index = Data.getProfileIndex(profile);
 472             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 473         }
 474         intent.putExtras(args);
 475         startActivity(intent, args);
 476     }
 477     private void setupProfile() {
 478         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 479         MobileLedgerProfile profile;
 480
 481         profile = Data.getProfile(profileUUID);
 482
 483         if (Data.profiles.isEmpty()) {
 484             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 485             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 486             return;
 487         }
 488
 489         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 490         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 491
 492         if (profile == null) profile = Data.profiles.get(0);
 493
 494         if (profile == null) throw new AssertionError("profile must have a value");
 495
 496         Data.setCurrentProfile(profile);
 497     }
 498     public void fabNewTransactionClicked(View view) {
 499         Intent intent = new Intent(this, NewTransactionActivity.class);
 500         startActivity(intent);
 501         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 502     }
 503     public void navSettingsClicked(View view) {
 504         Intent intent = new Intent(this, SettingsActivity.class);
 505         startActivity(intent);
 506         drawer.closeDrawers();
 507     }
 508     public void markDrawerItemCurrent(int id) {
 509         TextView item = drawer.findViewById(id);
 510         item.setBackgroundColor(Colors.tableRowDarkBG);
 511
 512         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 513         for (int i = 0; i < actions.getChildCount(); i++) {
 514             View view = actions.getChildAt(i);
 515             if (view.getId() != id) {
 516                 view.setBackgroundColor(Color.TRANSPARENT);
 517             }
 518         }
 519     }
 520     public void onAccountSummaryClicked(View view) {
 521         drawer.closeDrawers();
 522
 523         showAccountSummaryFragment();
 524     }
 525     private void showAccountSummaryFragment() {
 526         mViewPager.setCurrentItem(0, true);
 527         Data.accountFilter.setValue(null);
 528 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 529 //        accountSummaryFragment = new AccountSummaryFragment();
 530 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 531 //        ft.commit();
 532 //        currentFragment = accountSummaryFragment;
 533     }
 534     public void onLatestTransactionsClicked(View view) {
 535         drawer.closeDrawers();
 536
 537         showTransactionsFragment((String) null);
 538     }
 539     private void resetFragmentBackStack() {
 540 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 541     }
 542     private void showTransactionsFragment(String accName) {
 543         Data.accountFilter.setValue(accName);
 544         mViewPager.setCurrentItem(1, true);
 545     }
 546     private void showTransactionsFragment(LedgerAccount account) {
 547         showTransactionsFragment((account == null) ? (String) null : account.getName());
 548 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 549 //        if (transactionListFragment == null) {
 550 //            debug("flow", "MainActivity creating TransactionListFragment");
 551 //            transactionListFragment = new TransactionListFragment();
 552 //        }
 553 //        Bundle bundle = new Bundle();
 554 //        if (account != null) {
 555 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 556 //                    account.getName());
 557 //        }
 558 //        transactionListFragment.setArguments(bundle);
 559 //        ft.replace(R.id.root_frame, transactionListFragment);
 560 //        if (account != null)
 561 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 562 //        ft.commit();
 563 //
 564 //        currentFragment = transactionListFragment;
 565     }
 566     public void showAccountTransactions(LedgerAccount account) {
 567         mBackMeansToAccountList = true;
 568         showTransactionsFragment(account);
 569     }
 570     @Override
 571     public void onBackPressed() {
 572         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 573         if (drawer.isDrawerOpen(GravityCompat.START)) {
 574             drawer.closeDrawer(GravityCompat.START);
 575         }
 576         else {
 577             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 578                 Data.accountFilter.setValue(null);
 579                 showAccountSummaryFragment();
 580                 mBackMeansToAccountList = false;
 581             }
 582             else {
 583                 debug("fragments", String.format("manager stack: %d",
 584                         fragmentManager.getBackStackEntryCount()));
 585
 586                 super.onBackPressed();
 587             }
 588         }
 589     }
 590     public void updateLastUpdateTextFromDB() {
 591         final MobileLedgerProfile profile = Data.profile.get();
 592         long last_update = (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 593
 594         debug("transactions", String.format("Last update = %d", last_update));
 595         if (last_update == 0) {
 596             Data.lastUpdateDate.postValue(null);
 597         }
 598         else {
 599             Data.lastUpdateDate.postValue(new Date(last_update));
 600         }
 601     }
 602     public void scheduleTransactionListRetrieval() {
 603         if (Data.profile.get() == null) return;
 604
 605         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 606
 607         retrieveTransactionsTask.execute();
 608     }
 609     public void onStopTransactionRefreshClick(View view) {
 610         debug("interactive", "Cancelling transactions refresh");
 611         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 612         bTransactionListCancelDownload.setEnabled(false);
 613     }
 614     public void onRetrieveDone(String error) {
 615         progressLayout.setVisibility(View.GONE);
 616
 617         if (error == null) {
 618             updateLastUpdateTextFromDB();
 619
 620             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 621             TransactionListViewModel.scheduleTransactionListReload();
 622         }
 623         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 624     }
 625     public void onRetrieveStart() {
 626         bTransactionListCancelDownload.setEnabled(true);
 627         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 628         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 629         progressBar.setIndeterminate(true);
 630         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 631         else progressBar.setProgress(0);
 632         progressLayout.setVisibility(View.VISIBLE);
 633     }
 634     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 635         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 636             (progress.getTotal() == 0))
 637         {
 638             progressBar.setIndeterminate(true);
 639         }
 640         else {
 641             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 642                 progressBar.setMin(0);
 643             }
 644             progressBar.setMax(progress.getTotal());
 645             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 646                 progressBar.setProgress(progress.getProgress(), true);
 647             }
 648             else progressBar.setProgress(progress.getProgress());
 649             progressBar.setIndeterminate(false);
 650         }
 651     }
 652     public void fabShouldShow() {
 653         MobileLedgerProfile profile = Data.profile.get();
 654         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 655     }
 656     public void navProfilesHeadClicked(View view) {
 657         if (profileListExpanded) {
 658             collapseProfileList();
 659         }
 660         else {
 661             expandProfileList();
 662         }
 663     }
 664     private void expandProfileList() {
 665         profileListExpanded = true;
 666
 667
 668         profileListContainer.setVisibility(View.VISIBLE);
 669         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 670         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 671         profileListHeadMore.setVisibility(View.VISIBLE);
 672         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 673         findViewById(R.id.nav_profile_list).setMinimumHeight(
 674                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 675                        Data.profiles.size()));
 676     }
 677     private void collapseProfileList() {
 678         profileListExpanded = false;
 679
 680         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 681         animation.setAnimationListener(new Animation.AnimationListener() {
 682             @Override
 683             public void onAnimationStart(Animation animation) {
 684
 685             }
 686             @Override
 687             public void onAnimationEnd(Animation animation) {
 688                 profileListContainer.setVisibility(View.GONE);
 689             }
 690             @Override
 691             public void onAnimationRepeat(Animation animation) {
 692
 693             }
 694         });
 695         mProfileListAdapter.stopEditingProfiles();
 696
 697         profileListContainer.startAnimation(animation);
 698         profileListHeadArrow.setRotation(0f);
 699         profileListHeadArrow
 700                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 701         profileListHeadMore.setVisibility(View.GONE);
 702     }
 703     public void onAccountSummaryRowViewClicked(View view) {
 704         ViewGroup row;
 705         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 706         else row = (ViewGroup) view.getParent();
 707
 708         LedgerAccount acc = (LedgerAccount) row.getTag();
 709         switch (view.getId()) {
 710             case R.id.account_row_acc_name:
 711             case R.id.account_expander:
 712             case R.id.account_expander_container:
 713                 debug("accounts", "Account expander clicked");
 714                 if (!acc.hasSubAccounts()) return;
 715
 716                 boolean wasExpanded = acc.isExpanded();
 717
 718                 View arrow = row.findViewById(R.id.account_expander_container);
 719
 720                 arrow.clearAnimation();
 721                 ViewPropertyAnimator animator = arrow.animate();
 722
 723                 acc.toggleExpanded();
 724                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 725                         new Object[]{acc.isExpanded(), acc.getName(), Data.profile.get().getUuid()
 726                         });
 727
 728                 if (wasExpanded) {
 729                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 730                     arrow.setRotation(0);
 731                     animator.rotationBy(180);
 732
 733                     // removing all child accounts from the view
 734                     int start = -1, count = 0;
 735                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 736                         for (int i = 0; i < Data.accounts.size(); i++) {
 737                             if (acc.isParentOf(Data.accounts.get(i))) {
 738 //                                debug("accounts", String.format("Found a child '%s' at position %d",
 739 //                                        Data.accounts.get(i).getName(), i));
 740                                 if (start == -1) {
 741                                     start = i;
 742                                 }
 743                                 count++;
 744                             }
 745                             else {
 746                                 if (start != -1) {
 747 //                                    debug("accounts",
 748 //                                            String.format("Found a non-child '%s' at position %d",
 749 //                                                    Data.accounts.get(i).getName(), i));
 750                                     break;
 751                                 }
 752                             }
 753                         }
 754
 755                         if (start != -1) {
 756                             for (int j = 0; j < count; j++) {
 757 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 758 //                                        Data.accounts.get(start).getName()));
 759                                 Data.accounts.removeQuietly(start);
 760                             }
 761
 762                             mAccountSummaryFragment.modelAdapter
 763                                     .notifyItemRangeRemoved(start, count);
 764                         }
 765                     }
 766                 }
 767                 else {
 768                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 769                     arrow.setRotation(180);
 770                     animator.rotationBy(-180);
 771                     List<LedgerAccount> children =
 772                             Data.profile.get().loadVisibleChildAccountsOf(acc);
 773                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 774                         int parentPos = Data.accounts.indexOf(acc);
 775                         if (parentPos != -1) {
 776                             // may have disappeared in a concurrent refresh operation
 777                             Data.accounts.addAllQuietly(parentPos + 1, children);
 778                             mAccountSummaryFragment.modelAdapter
 779                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 780                         }
 781                     }
 782                 }
 783                 break;
 784             case R.id.account_row_acc_amounts:
 785                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 786                     acc.toggleAmountsExpanded();
 787                     DbOpQueue
 788                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 789                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 790                                                  Data.profile.get().getUuid()
 791                                     });
 792                     Data.accounts.triggerItemChangedNotification(acc);
 793                 }
 794                 break;
 795         }
 796     }
 797
 798     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 799
 800         public SectionsPagerAdapter(FragmentManager fm) {
 801             super(fm);
 802         }
 803
 804         @NotNull
 805         @Override
 806         public Fragment getItem(int position) {
 807             debug("main", String.format("Switching to fragment %d", position));
 808             switch (position) {
 809                 case 0:
 810 //                    debug("flow", "Creating account summary fragment");
 811                     return mAccountSummaryFragment = new AccountSummaryFragment();
 812                 case 1:
 813                     return new TransactionListFragment();
 814                 default:
 815                     throw new IllegalStateException(
 816                             String.format("Unexpected fragment index: " + "%d", position));
 817             }
 818         }
 819
 820         @Override
 821         public int getCount() {
 822             return 2;
 823         }
 824     }
 825 }