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