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

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Intent;
  21 import android.content.pm.PackageInfo;
  22 import android.content.pm.ShortcutInfo;
  23 import android.content.pm.ShortcutManager;
  24 import android.content.res.ColorStateList;
  25 import android.graphics.Color;
  26 import android.graphics.drawable.Icon;
  27 import android.os.AsyncTask;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.util.Log;
  31 import android.view.View;
  32 import android.view.ViewGroup;
  33 import android.view.ViewPropertyAnimator;
  34 import android.view.animation.Animation;
  35 import android.view.animation.AnimationUtils;
  36 import android.widget.LinearLayout;
  37 import android.widget.ProgressBar;
  38 import android.widget.TextView;
  39 import android.widget.Toast;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42
  43 import net.ktnx.mobileledger.R;
  44 import net.ktnx.mobileledger.async.DbOpQueue;
  45 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  46 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  47 import net.ktnx.mobileledger.model.Data;
  48 import net.ktnx.mobileledger.model.LedgerAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  51 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  52 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  53 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  54 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  55 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  56 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  57 import net.ktnx.mobileledger.utils.Colors;
  58 import net.ktnx.mobileledger.utils.LockHolder;
  59 import net.ktnx.mobileledger.utils.Logger;
  60 import net.ktnx.mobileledger.utils.MLDB;
  61
  62 import org.jetbrains.annotations.NotNull;
  63
  64 import java.lang.ref.WeakReference;
  65 import java.text.DateFormat;
  66 import java.util.ArrayList;
  67 import java.util.Date;
  68 import java.util.List;
  69 import java.util.Locale;
  70 import java.util.Observer;
  71
  72 import androidx.appcompat.app.ActionBarDrawerToggle;
  73 import androidx.appcompat.widget.Toolbar;
  74 import androidx.core.view.GravityCompat;
  75 import androidx.drawerlayout.widget.DrawerLayout;
  76 import androidx.fragment.app.Fragment;
  77 import androidx.fragment.app.FragmentManager;
  78 import androidx.fragment.app.FragmentPagerAdapter;
  79 import androidx.recyclerview.widget.LinearLayoutManager;
  80 import androidx.recyclerview.widget.RecyclerView;
  81 import androidx.viewpager.widget.ViewPager;
  82
  83 import static net.ktnx.mobileledger.utils.Logger.debug;
  84
  85 public class MainActivity extends ProfileThemedActivity {
  86     public static final String STATE_CURRENT_PAGE = "current_page";
  87     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  88     public static final String STATE_ACC_FILTER = "account_filter";
  89     public AccountSummaryFragment mAccountSummaryFragment;
  90     DrawerLayout drawer;
  91     private LinearLayout profileListContainer;
  92     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  93     private FragmentManager fragmentManager;
  94     private RetrieveTransactionsTask retrieveTransactionsTask;
  95     private View bTransactionListCancelDownload;
  96     private ProgressBar progressBar;
  97     private LinearLayout progressLayout;
  98     private SectionsPagerAdapter mSectionsPagerAdapter;
  99     private ViewPager mViewPager;
 100     private FloatingActionButton fab;
 101     private boolean profileListExpanded = false;
 102     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 103     private int mCurrentPage;
 104     private String mAccountFilter;
 105     private boolean mBackMeansToAccountList = false;
 106     private Toolbar mToolbar;
 107     private DrawerLayout.SimpleDrawerListener drawerListener;
 108     private ActionBarDrawerToggle barDrawerToggle;
 109     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 110     private Observer editingProfilesObserver;
 111     private MobileLedgerProfile profile;
 112     @Override
 113     protected void onStart() {
 114         super.onStart();
 115
 116         debug("flow", "MainActivity.onStart()");
 117         mViewPager.setCurrentItem(mCurrentPage, false);
 118         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 119         else Data.accountFilter.setValue(null);
 120
 121     }
 122     @Override
 123     protected void onSaveInstanceState(@NotNull Bundle outState) {
 124         super.onSaveInstanceState(outState);
 125         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 126         if (mAccountFilter != null) outState.putString(STATE_ACC_FILTER, mAccountFilter);
 127     }
 128     @Override
 129     protected void onDestroy() {
 130         mSectionsPagerAdapter = null;
 131         RecyclerView root = findViewById(R.id.nav_profile_list);
 132         if (root != null) root.setAdapter(null);
 133         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 134         drawerListener = null;
 135         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 136         barDrawerToggle = null;
 137         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 138         pageChangeListener = null;
 139         if (mProfileListAdapter != null)
 140             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 141         editingProfilesObserver = null;
 142         super.onDestroy();
 143     }
 144     @Override
 145     protected void onCreate(Bundle savedInstanceState) {
 146         super.onCreate(savedInstanceState);
 147         debug("flow", "MainActivity.onCreate()");
 148         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 149         Colors.setupTheme(this, profileColor);
 150         Colors.profileThemeId = profileColor;
 151         setContentView(R.layout.activity_main);
 152
 153         fab = findViewById(R.id.btn_add_transaction);
 154         profileListContainer = findViewById(R.id.nav_profile_list_container);
 155         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 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         drawer = findViewById(R.id.drawer_layout);
 161         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 162         progressBar = findViewById(R.id.transaction_list_progress_bar);
 163         progressLayout = findViewById(R.id.transaction_progress_layout);
 164         fragmentManager = getSupportFragmentManager();
 165         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 166         mViewPager = findViewById(R.id.root_frame);
 167
 168         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 169         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 170
 171
 172         mToolbar = findViewById(R.id.toolbar);
 173         setSupportActionBar(mToolbar);
 174
 175         Data.profile.observe(this, this::onProfileChanged);
 176
 177         Data.profiles.observe(this, this::onProfileListChanged);
 178
 179         if (barDrawerToggle == null) {
 180             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 181                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 182             drawer.addDrawerListener(barDrawerToggle);
 183         }
 184         barDrawerToggle.syncState();
 185
 186         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 187
 188         try {
 189             PackageInfo pi =
 190                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 191             ver.setText(pi.versionName);
 192         }
 193         catch (Exception e) {
 194             e.printStackTrace();
 195         }
 196
 197         if (progressBar == null)
 198             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 199         if (progressLayout == null) throw new RuntimeException(
 200                 "Can't get hold on the transaction value progress bar layout");
 201
 202         markDrawerItemCurrent(R.id.nav_account_summary);
 203
 204         mViewPager.setAdapter(mSectionsPagerAdapter);
 205
 206         if (pageChangeListener == null) {
 207             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 208                 @Override
 209                 public void onPageSelected(int 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         if (editingProfilesObserver == null) {
 256             editingProfilesObserver = (o, arg) -> {
 257                 if (mProfileListAdapter.isEditingProfiles()) {
 258                     profileListHeadMore.setVisibility(View.GONE);
 259                     profileListHeadMore
 260                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 261                     profileListHeadCancel.setVisibility(View.VISIBLE);
 262                     profileListHeadCancel
 263                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 264                 }
 265                 else {
 266                     profileListHeadCancel.setVisibility(View.GONE);
 267                     profileListHeadCancel
 268                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 269                     profileListHeadMore.setVisibility(View.GONE);
 270                     if (profileListExpanded) {
 271                         profileListHeadMore.setVisibility(View.VISIBLE);
 272                         profileListHeadMore
 273                                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 274                     }
 275                     else profileListHeadMore.setVisibility(View.GONE);
 276                 }
 277             };
 278             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 279         }
 280
 281         LinearLayoutManager llm = new LinearLayoutManager(this);
 282
 283         llm.setOrientation(RecyclerView.VERTICAL);
 284         root.setLayoutManager(llm);
 285
 286         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 287         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 288         profileListHeadMoreAndCancel
 289                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 290
 291         if (drawerListener == null) {
 292             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 293                 @Override
 294                 public void onDrawerClosed(View drawerView) {
 295                     super.onDrawerClosed(drawerView);
 296                     collapseProfileList();
 297                 }
 298             };
 299             drawer.addDrawerListener(drawerListener);
 300         }
 301
 302         findViewById(R.id.nav_profile_list_head_layout)
 303                 .setOnClickListener(this::navProfilesHeadClicked);
 304         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 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             scheduleTransactionListRetrieval();
 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.isEmpty()) {
 340             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 341             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 342             findViewById(R.id.loading_layout).setVisibility(View.GONE);
 343             return;
 344         }
 345
 346         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 347         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 348         findViewById(R.id.loading_layout).setVisibility(View.GONE);
 349
 350         findViewById(R.id.nav_profile_list).setMinimumHeight(
 351                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 352
 353         debug("profiles", "profile list changed");
 354         mProfileListAdapter.notifyDataSetChanged();
 355
 356         createShortcuts(newList);
 357     }
 358     /** called when the current profile has changed */
 359     private void onProfileChanged(MobileLedgerProfile profile) {
 360         boolean haveProfile = profile != null;
 361         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 362         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 363
 364         if (haveProfile) setTitle(profile.getName());
 365         else setTitle(R.string.app_name);
 366
 367         this.profile = profile;
 368
 369         mProfileListAdapter.notifyDataSetChanged();
 370
 371         int newProfileTheme = haveProfile ? profile.getThemeId() : -1;
 372         if (newProfileTheme != Colors.profileThemeId) {
 373             debug("profiles",
 374                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 375                             newProfileTheme));
 376             MainActivity.this.profileThemeChanged();
 377             Colors.profileThemeId = newProfileTheme;
 378             // profileThemeChanged would restart the activity, so no need to reload the
 379             // data sets below
 380             return;
 381         }
 382         collapseProfileList();
 383
 384         drawer.closeDrawers();
 385
 386         Data.transactions.clear();
 387         debug("transactions", "requesting list reload");
 388         TransactionListViewModel.scheduleTransactionListReload();
 389
 390         Data.accounts.clear();
 391         AccountSummaryViewModel.scheduleAccountListReload();
 392
 393         if (haveProfile) {
 394             if (profile.isPostingPermitted()) {
 395                 mToolbar.setSubtitle(null);
 396                 fab.show();
 397             }
 398             else {
 399                 mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 400                 fab.hide();
 401             }
 402         }
 403         else {
 404             mToolbar.setSubtitle(null);
 405             fab.hide();
 406         }
 407
 408         updateLastUpdateTextFromDB();
 409     }
 410     private void updateLastUpdateDisplay(Date newValue) {
 411         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 412         TextView v = findViewById(R.id.transactions_last_update);
 413         if (newValue == null) {
 414             l.setVisibility(View.INVISIBLE);
 415             debug("main", "no last update date :(");
 416         }
 417         else {
 418             final String text = DateFormat.getDateTimeInstance().format(newValue);
 419             v.setText(text);
 420             l.setVisibility(View.VISIBLE);
 421             debug("main", String.format("Date formatted: %s", text));
 422         }
 423
 424         scheduleDataRetrievalIfStale(newValue);
 425     }
 426     private void profileThemeChanged() {
 427         setupProfileColors();
 428
 429         Bundle bundle = new Bundle();
 430         onSaveInstanceState(bundle);
 431         // restart activity to reflect theme change
 432         finish();
 433
 434         // un-hook all observed LiveData
 435         Data.profile.removeObservers(this);
 436         Data.profiles.removeObservers(this);
 437         Data.lastUpdateDate.removeObservers(this);
 438         Intent intent = new Intent(this, this.getClass());
 439         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 440         startActivity(intent);
 441     }
 442     public void startEditProfileActivity(MobileLedgerProfile profile) {
 443         Intent intent = new Intent(this, ProfileDetailActivity.class);
 444         Bundle args = new Bundle();
 445         if (profile != null) {
 446             int index = Data.getProfileIndex(profile);
 447             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 448         }
 449         intent.putExtras(args);
 450         startActivity(intent, args);
 451     }
 452     private void setupProfile() {
 453         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 454         MobileLedgerProfile startupProfile;
 455
 456         startupProfile = Data.getProfile(profileUUID);
 457         Data.setCurrentProfile(startupProfile);
 458     }
 459     public void fabNewTransactionClicked(View view) {
 460         Intent intent = new Intent(this, NewTransactionActivity.class);
 461         startActivity(intent);
 462         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 463     }
 464     public void navSettingsClicked(View view) {
 465         Intent intent = new Intent(this, SettingsActivity.class);
 466         startActivity(intent);
 467         drawer.closeDrawers();
 468     }
 469     public void markDrawerItemCurrent(int id) {
 470         TextView item = drawer.findViewById(id);
 471         item.setBackgroundColor(Colors.tableRowDarkBG);
 472
 473         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 474         for (int i = 0; i < actions.getChildCount(); i++) {
 475             View view = actions.getChildAt(i);
 476             if (view.getId() != id) {
 477                 view.setBackgroundColor(Color.TRANSPARENT);
 478             }
 479         }
 480     }
 481     public void onAccountSummaryClicked(View view) {
 482         drawer.closeDrawers();
 483
 484         showAccountSummaryFragment();
 485     }
 486     private void showAccountSummaryFragment() {
 487         mViewPager.setCurrentItem(0, true);
 488         Data.accountFilter.setValue(null);
 489     }
 490     public void onLatestTransactionsClicked(View view) {
 491         drawer.closeDrawers();
 492
 493         showTransactionsFragment((String) null);
 494     }
 495     private void showTransactionsFragment(String accName) {
 496         Data.accountFilter.setValue(accName);
 497         mViewPager.setCurrentItem(1, true);
 498     }
 499     private void showTransactionsFragment(LedgerAccount account) {
 500         showTransactionsFragment((account == null) ? null : account.getName());
 501     }
 502     public void showAccountTransactions(LedgerAccount account) {
 503         mBackMeansToAccountList = true;
 504         showTransactionsFragment(account);
 505     }
 506     @Override
 507     public void onBackPressed() {
 508         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 509         if (drawer.isDrawerOpen(GravityCompat.START)) {
 510             drawer.closeDrawer(GravityCompat.START);
 511         }
 512         else {
 513             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 514                 Data.accountFilter.setValue(null);
 515                 showAccountSummaryFragment();
 516                 mBackMeansToAccountList = false;
 517             }
 518             else {
 519                 debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 520                         fragmentManager.getBackStackEntryCount()));
 521
 522                 super.onBackPressed();
 523             }
 524         }
 525     }
 526     public void updateLastUpdateTextFromDB() {
 527         long last_update = (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 528
 529         debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", last_update));
 530         if (last_update == 0) {
 531             Data.lastUpdateDate.postValue(null);
 532         }
 533         else {
 534             Data.lastUpdateDate.postValue(new Date(last_update));
 535         }
 536     }
 537     public void scheduleTransactionListRetrieval() {
 538         if (Data.profile.get() == null) return;
 539
 540         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 541
 542         retrieveTransactionsTask.execute();
 543     }
 544     public void onStopTransactionRefreshClick(View view) {
 545         debug("interactive", "Cancelling transactions refresh");
 546         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 547         bTransactionListCancelDownload.setEnabled(false);
 548     }
 549     public void onRetrieveDone(String error) {
 550         progressLayout.setVisibility(View.GONE);
 551
 552         if (error == null) {
 553             updateLastUpdateTextFromDB();
 554
 555             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 556             TransactionListViewModel.scheduleTransactionListReload();
 557         }
 558         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 559     }
 560     public void onRetrieveStart() {
 561         bTransactionListCancelDownload.setEnabled(true);
 562         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 563         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 564         progressBar.setIndeterminate(true);
 565         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 566         else progressBar.setProgress(0);
 567         progressLayout.setVisibility(View.VISIBLE);
 568     }
 569     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 570         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 571             (progress.getTotal() == 0))
 572         {
 573             progressBar.setIndeterminate(true);
 574         }
 575         else {
 576             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 577                 progressBar.setMin(0);
 578             }
 579             progressBar.setMax(progress.getTotal());
 580             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 581                 progressBar.setProgress(progress.getProgress(), true);
 582             }
 583             else progressBar.setProgress(progress.getProgress());
 584             progressBar.setIndeterminate(false);
 585         }
 586     }
 587     public void fabShouldShow() {
 588         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 589     }
 590     public void fabHide() {
 591         fab.hide();
 592     }
 593     public void navProfilesHeadClicked(View view) {
 594         if (profileListExpanded) {
 595             collapseProfileList();
 596         }
 597         else {
 598             expandProfileList();
 599         }
 600     }
 601     private void expandProfileList() {
 602         profileListExpanded = true;
 603
 604
 605         profileListContainer.setVisibility(View.VISIBLE);
 606         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 607         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 608         profileListHeadMore.setVisibility(View.VISIBLE);
 609         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 610         final ArrayList<MobileLedgerProfile> profiles = Data.profiles.getValue();
 611         findViewById(R.id.nav_profile_list).setMinimumHeight(
 612                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 613                        (profiles != null ? profiles.size() : 0)));
 614     }
 615     private void collapseProfileList() {
 616         boolean wasExpanded = profileListExpanded;
 617         profileListExpanded = false;
 618
 619         if (wasExpanded) {
 620             final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 621             animation.setAnimationListener(new Animation.AnimationListener() {
 622                 @Override
 623                 public void onAnimationStart(Animation animation) {
 624
 625                 }
 626                 @Override
 627                 public void onAnimationEnd(Animation animation) {
 628                     profileListContainer.setVisibility(View.GONE);
 629                 }
 630                 @Override
 631                 public void onAnimationRepeat(Animation animation) {
 632
 633                 }
 634             });
 635             mProfileListAdapter.stopEditingProfiles();
 636
 637             profileListContainer.startAnimation(animation);
 638             profileListHeadArrow.setRotation(0f);
 639             profileListHeadArrow
 640                     .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 641             final Animation moreAnimation = AnimationUtils.loadAnimation(this, R.anim.fade_out);
 642             moreAnimation.setAnimationListener(new Animation.AnimationListener() {
 643                 @Override
 644                 public void onAnimationStart(Animation animation) {
 645                 }
 646                 @Override
 647                 public void onAnimationEnd(Animation animation) {
 648                     profileListHeadMore.setVisibility(View.GONE);
 649                 }
 650                 @Override
 651                 public void onAnimationRepeat(Animation animation) {
 652                 }
 653             });
 654             profileListHeadMore.startAnimation(moreAnimation);
 655         }
 656         else {
 657             profileListContainer.setVisibility(View.GONE);
 658             profileListHeadArrow.setRotation(0f);
 659             profileListHeadMore.setVisibility(View.GONE);
 660         }
 661     }
 662     public void onAccountSummaryRowViewClicked(View view) {
 663         ViewGroup row;
 664         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 665         else row = (ViewGroup) view.getParent();
 666
 667         LedgerAccount acc = (LedgerAccount) row.getTag();
 668         switch (view.getId()) {
 669             case R.id.account_row_acc_name:
 670             case R.id.account_expander:
 671             case R.id.account_expander_container:
 672                 debug("accounts", "Account expander clicked");
 673                 if (!acc.hasSubAccounts()) return;
 674
 675                 boolean wasExpanded = acc.isExpanded();
 676
 677                 View arrow = row.findViewById(R.id.account_expander_container);
 678
 679                 arrow.clearAnimation();
 680                 ViewPropertyAnimator animator = arrow.animate();
 681
 682                 acc.toggleExpanded();
 683                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 684                         new Object[]{acc.isExpanded(), acc.getName(), profile.getUuid()
 685                         });
 686
 687                 if (wasExpanded) {
 688                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 689                     arrow.setRotation(0);
 690                     animator.rotationBy(180);
 691
 692                     // removing all child accounts from the view
 693                     int start = -1, count = 0;
 694                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 695                         for (int i = 0; i < Data.accounts.size(); i++) {
 696                             if (acc.isParentOf(Data.accounts.get(i))) {
 697 //                                debug("accounts", String.format("Found a child '%s' at position %d",
 698 //                                        Data.accounts.get(i).getName(), i));
 699                                 if (start == -1) {
 700                                     start = i;
 701                                 }
 702                                 count++;
 703                             }
 704                             else {
 705                                 if (start != -1) {
 706 //                                    debug("accounts",
 707 //                                            String.format("Found a non-child '%s' at position %d",
 708 //                                                    Data.accounts.get(i).getName(), i));
 709                                     break;
 710                                 }
 711                             }
 712                         }
 713
 714                         if (start != -1) {
 715                             for (int j = 0; j < count; j++) {
 716 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 717 //                                        Data.accounts.get(start).getName()));
 718                                 Data.accounts.removeQuietly(start);
 719                             }
 720
 721                             mAccountSummaryFragment.modelAdapter
 722                                     .notifyItemRangeRemoved(start, count);
 723                         }
 724                     }
 725                 }
 726                 else {
 727                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 728                     arrow.setRotation(180);
 729                     animator.rotationBy(-180);
 730                     List<LedgerAccount> children = profile.loadVisibleChildAccountsOf(acc);
 731                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 732                         int parentPos = Data.accounts.indexOf(acc);
 733                         if (parentPos != -1) {
 734                             // may have disappeared in a concurrent refresh operation
 735                             Data.accounts.addAllQuietly(parentPos + 1, children);
 736                             mAccountSummaryFragment.modelAdapter
 737                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 738                         }
 739                     }
 740                 }
 741                 break;
 742             case R.id.account_row_acc_amounts:
 743                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 744                     acc.toggleAmountsExpanded();
 745                     DbOpQueue
 746                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 747                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 748                                                  profile.getUuid()
 749                                     });
 750                     Data.accounts.triggerItemChangedNotification(acc);
 751                 }
 752                 break;
 753         }
 754     }
 755
 756     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 757
 758         SectionsPagerAdapter(FragmentManager fm) {
 759             super(fm);
 760         }
 761
 762         @NotNull
 763         @Override
 764         public Fragment getItem(int position) {
 765             debug("main", String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 766             switch (position) {
 767                 case 0:
 768 //                    debug("flow", "Creating account summary fragment");
 769                     return mAccountSummaryFragment = new AccountSummaryFragment();
 770                 case 1:
 771                     return new TransactionListFragment();
 772                 default:
 773                     throw new IllegalStateException(
 774                             String.format("Unexpected fragment index: " + "%d", position));
 775             }
 776         }
 777
 778         @Override
 779         public int getCount() {
 780             return 2;
 781         }
 782     }
 783 }