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