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