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