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.MLDB;
  60
  61 import org.jetbrains.annotations.NotNull;
  62
  63 import java.text.DateFormat;
  64 import java.util.ArrayList;
  65 import java.util.Date;
  66 import java.util.List;
  67 import java.util.Locale;
  68 import java.util.Observer;
  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     public AccountSummaryFragment mAccountSummaryFragment;
  88     DrawerLayout drawer;
  89     private LinearLayout profileListContainer;
  90     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  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 boolean profileListExpanded = false;
  99     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 100     private int mCurrentPage;
 101     private String mAccountFilter;
 102     private boolean mBackMeansToAccountList = false;
 103     private Toolbar mToolbar;
 104     private DrawerLayout.SimpleDrawerListener drawerListener;
 105     private ActionBarDrawerToggle barDrawerToggle;
 106     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 107     private Observer editingProfilesObserver;
 108     private MobileLedgerProfile profile;
 109     @Override
 110     protected void onStart() {
 111         super.onStart();
 112
 113         debug("flow", "MainActivity.onStart()");
 114         mViewPager.setCurrentItem(mCurrentPage, false);
 115         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 116         else Data.accountFilter.setValue(null);
 117
 118     }
 119     @Override
 120     protected void onSaveInstanceState(@NotNull Bundle outState) {
 121         super.onSaveInstanceState(outState);
 122         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 123         if (mAccountFilter != null) outState.putString(STATE_ACC_FILTER, mAccountFilter);
 124     }
 125     @Override
 126     protected void onDestroy() {
 127         mSectionsPagerAdapter = null;
 128         RecyclerView root = findViewById(R.id.nav_profile_list);
 129         if (root != null) root.setAdapter(null);
 130         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 131         drawerListener = null;
 132         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 133         barDrawerToggle = null;
 134         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 135         pageChangeListener = null;
 136         if (mProfileListAdapter != null)
 137             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 138         editingProfilesObserver = null;
 139         super.onDestroy();
 140     }
 141     @Override
 142     protected void onCreate(Bundle savedInstanceState) {
 143         super.onCreate(savedInstanceState);
 144         debug("flow", "MainActivity.onCreate()");
 145         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 146         Colors.setupTheme(this, profileColor);
 147         Colors.profileThemeId = profileColor;
 148         setContentView(R.layout.activity_main);
 149
 150         fab = findViewById(R.id.btn_add_transaction);
 151         profileListContainer = findViewById(R.id.nav_profile_list_container);
 152         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 153         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 154         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 155         LinearLayout profileListHeadMoreAndCancel =
 156                 findViewById(R.id.nav_profile_list_head_buttons);
 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         if (editingProfilesObserver == null) {
 253             editingProfilesObserver = (o, arg) -> {
 254                 if (mProfileListAdapter.isEditingProfiles()) {
 255                     profileListHeadMore.setVisibility(View.GONE);
 256                     profileListHeadMore
 257                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 258                     profileListHeadCancel.setVisibility(View.VISIBLE);
 259                     profileListHeadCancel
 260                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 261                 }
 262                 else {
 263                     profileListHeadCancel.setVisibility(View.GONE);
 264                     profileListHeadCancel
 265                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 266                     profileListHeadMore.setVisibility(View.GONE);
 267                     if (profileListExpanded) {
 268                         profileListHeadMore.setVisibility(View.VISIBLE);
 269                         profileListHeadMore
 270                                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 271                     }
 272                     else profileListHeadMore.setVisibility(View.GONE);
 273                 }
 274             };
 275             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 276         }
 277
 278         LinearLayoutManager llm = new LinearLayoutManager(this);
 279
 280         llm.setOrientation(RecyclerView.VERTICAL);
 281         root.setLayoutManager(llm);
 282
 283         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 284         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 285         profileListHeadMoreAndCancel
 286                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 287
 288         if (drawerListener == null) {
 289             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 290                 @Override
 291                 public void onDrawerClosed(View drawerView) {
 292                     super.onDrawerClosed(drawerView);
 293                     collapseProfileList();
 294                 }
 295             };
 296             drawer.addDrawerListener(drawerListener);
 297         }
 298
 299         findViewById(R.id.nav_profile_list_head_layout)
 300                 .setOnClickListener(this::navProfilesHeadClicked);
 301         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 302         setupProfile();
 303     }
 304     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 305         long now = new Date().getTime();
 306         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 307             if (lastUpdate == null) debug("db::", "WEB data never fetched. scheduling a fetch");
 308             else debug("db", String.format(Locale.ENGLISH,
 309                     "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 310                     lastUpdate.getTime() / 1000f, now / 1000f));
 311
 312             Data.scheduleTransactionListRetrieval(this);
 313         }
 314     }
 315     private void createShortcuts(List<MobileLedgerProfile> list) {
 316         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;
 317
 318         List<ShortcutInfo> shortcuts = new ArrayList<>();
 319         int i = 0;
 320         for (MobileLedgerProfile p : list) {
 321             if (!p.isPostingPermitted()) continue;
 322
 323             ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 324                     .setShortLabel(p.getName())
 325                     .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 326                     .setIntent(
 327                             new Intent(Intent.ACTION_VIEW, null, this, NewTransactionActivity.class)
 328                                     .putExtra("profile_uuid", p.getUuid())).setRank(i).build();
 329             shortcuts.add(si);
 330             i++;
 331         }
 332         ShortcutManager sm = getSystemService(ShortcutManager.class);
 333         sm.setDynamicShortcuts(shortcuts);
 334     }
 335     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
 336         if (newList.isEmpty()) {
 337             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 338             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 339             findViewById(R.id.loading_layout).setVisibility(View.GONE);
 340             return;
 341         }
 342
 343         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 344         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 345         findViewById(R.id.loading_layout).setVisibility(View.GONE);
 346
 347         findViewById(R.id.nav_profile_list).setMinimumHeight(
 348                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 349
 350         debug("profiles", "profile list changed");
 351         mProfileListAdapter.notifyDataSetChanged();
 352
 353         createShortcuts(newList);
 354     }
 355     /** called when the current profile has changed */
 356     private void onProfileChanged(MobileLedgerProfile profile) {
 357         boolean haveProfile = profile != null;
 358         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 359         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 360
 361         if (haveProfile) setTitle(profile.getName());
 362         else setTitle(R.string.app_name);
 363
 364         this.profile = profile;
 365
 366         mProfileListAdapter.notifyDataSetChanged();
 367
 368         int newProfileTheme = haveProfile ? profile.getThemeId() : -1;
 369         if (newProfileTheme != Colors.profileThemeId) {
 370             debug("profiles",
 371                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 372                             newProfileTheme));
 373             MainActivity.this.profileThemeChanged();
 374             Colors.profileThemeId = newProfileTheme;
 375             // profileThemeChanged would restart the activity, so no need to reload the
 376             // data sets below
 377             return;
 378         }
 379         collapseProfileList();
 380
 381         drawer.closeDrawers();
 382
 383         Data.transactions.clear();
 384         debug("transactions", "requesting list reload");
 385         TransactionListViewModel.scheduleTransactionListReload();
 386
 387         Data.accounts.clear();
 388         AccountSummaryViewModel.scheduleAccountListReload();
 389
 390         if (haveProfile) {
 391             if (profile.isPostingPermitted()) {
 392                 mToolbar.setSubtitle(null);
 393                 fab.show();
 394             }
 395             else {
 396                 mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 397                 fab.hide();
 398             }
 399         }
 400         else {
 401             mToolbar.setSubtitle(null);
 402             fab.hide();
 403         }
 404
 405         updateLastUpdateTextFromDB();
 406     }
 407     private void updateLastUpdateDisplay(Date newValue) {
 408         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 409         TextView v = findViewById(R.id.transactions_last_update);
 410         if (newValue == null) {
 411             l.setVisibility(View.INVISIBLE);
 412             debug("main", "no last update date :(");
 413         }
 414         else {
 415             final String text = DateFormat.getDateTimeInstance().format(newValue);
 416             v.setText(text);
 417             l.setVisibility(View.VISIBLE);
 418             debug("main", String.format("Date formatted: %s", text));
 419         }
 420
 421         scheduleDataRetrievalIfStale(newValue);
 422     }
 423     private void profileThemeChanged() {
 424         setupProfileColors();
 425
 426         Bundle bundle = new Bundle();
 427         onSaveInstanceState(bundle);
 428         // restart activity to reflect theme change
 429         finish();
 430
 431         // un-hook all observed LiveData
 432         Data.profile.removeObservers(this);
 433         Data.profiles.removeObservers(this);
 434         Data.lastUpdateDate.removeObservers(this);
 435         Intent intent = new Intent(this, this.getClass());
 436         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 437         startActivity(intent);
 438     }
 439     public void startEditProfileActivity(MobileLedgerProfile profile) {
 440         Intent intent = new Intent(this, ProfileDetailActivity.class);
 441         Bundle args = new Bundle();
 442         if (profile != null) {
 443             int index = Data.getProfileIndex(profile);
 444             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 445         }
 446         intent.putExtras(args);
 447         startActivity(intent, args);
 448     }
 449     private void setupProfile() {
 450         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 451         MobileLedgerProfile startupProfile;
 452
 453         startupProfile = Data.getProfile(profileUUID);
 454         Data.setCurrentProfile(startupProfile);
 455     }
 456     public void fabNewTransactionClicked(View view) {
 457         Intent intent = new Intent(this, NewTransactionActivity.class);
 458         startActivity(intent);
 459         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 460     }
 461     public void navSettingsClicked(View view) {
 462         Intent intent = new Intent(this, SettingsActivity.class);
 463         startActivity(intent);
 464         drawer.closeDrawers();
 465     }
 466     public void markDrawerItemCurrent(int id) {
 467         TextView item = drawer.findViewById(id);
 468         item.setBackgroundColor(Colors.tableRowDarkBG);
 469
 470         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 471         for (int i = 0; i < actions.getChildCount(); i++) {
 472             View view = actions.getChildAt(i);
 473             if (view.getId() != id) {
 474                 view.setBackgroundColor(Color.TRANSPARENT);
 475             }
 476         }
 477     }
 478     public void onAccountSummaryClicked(View view) {
 479         drawer.closeDrawers();
 480
 481         showAccountSummaryFragment();
 482     }
 483     private void showAccountSummaryFragment() {
 484         mViewPager.setCurrentItem(0, true);
 485         Data.accountFilter.setValue(null);
 486     }
 487     public void onLatestTransactionsClicked(View view) {
 488         drawer.closeDrawers();
 489
 490         showTransactionsFragment((String) null);
 491     }
 492     private void showTransactionsFragment(String accName) {
 493         Data.accountFilter.setValue(accName);
 494         mViewPager.setCurrentItem(1, true);
 495     }
 496     private void showTransactionsFragment(LedgerAccount account) {
 497         showTransactionsFragment((account == null) ? null : account.getName());
 498     }
 499     public void showAccountTransactions(LedgerAccount account) {
 500         mBackMeansToAccountList = true;
 501         showTransactionsFragment(account);
 502     }
 503     @Override
 504     public void onBackPressed() {
 505         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 506         if (drawer.isDrawerOpen(GravityCompat.START)) {
 507             drawer.closeDrawer(GravityCompat.START);
 508         }
 509         else {
 510             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 511                 Data.accountFilter.setValue(null);
 512                 showAccountSummaryFragment();
 513                 mBackMeansToAccountList = false;
 514             }
 515             else {
 516                 debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 517                         fragmentManager.getBackStackEntryCount()));
 518
 519                 super.onBackPressed();
 520             }
 521         }
 522     }
 523     public void updateLastUpdateTextFromDB() {
 524         long last_update = (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 525
 526         debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", last_update));
 527         if (last_update == 0) {
 528             Data.lastUpdateDate.postValue(null);
 529         }
 530         else {
 531             Data.lastUpdateDate.postValue(new Date(last_update));
 532         }
 533     }
 534     public void onStopTransactionRefreshClick(View view) {
 535         debug("interactive", "Cancelling transactions refresh");
 536         Data.stopTransactionsRetrieval();
 537         bTransactionListCancelDownload.setEnabled(false);
 538     }
 539     public void onRetrieveDone(String error) {
 540         Data.transactionRetrievalDone();
 541         progressLayout.setVisibility(View.GONE);
 542
 543         if (error == null) {
 544             updateLastUpdateTextFromDB();
 545
 546             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 547             TransactionListViewModel.scheduleTransactionListReload();
 548         }
 549         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 550     }
 551     public void onRetrieveStart() {
 552         bTransactionListCancelDownload.setEnabled(true);
 553         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 554         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 555         progressBar.setIndeterminate(true);
 556         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 557         else progressBar.setProgress(0);
 558         progressLayout.setVisibility(View.VISIBLE);
 559     }
 560     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 561         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 562             (progress.getTotal() == 0))
 563         {
 564             progressBar.setIndeterminate(true);
 565         }
 566         else {
 567             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 568                 progressBar.setMin(0);
 569             }
 570             progressBar.setMax(progress.getTotal());
 571             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 572                 progressBar.setProgress(progress.getProgress(), true);
 573             }
 574             else progressBar.setProgress(progress.getProgress());
 575             progressBar.setIndeterminate(false);
 576         }
 577     }
 578     public void fabShouldShow() {
 579         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 580     }
 581     public void fabHide() {
 582         fab.hide();
 583     }
 584     public void navProfilesHeadClicked(View view) {
 585         if (profileListExpanded) {
 586             collapseProfileList();
 587         }
 588         else {
 589             expandProfileList();
 590         }
 591     }
 592     private void expandProfileList() {
 593         profileListExpanded = true;
 594
 595
 596         profileListContainer.setVisibility(View.VISIBLE);
 597         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 598         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 599         profileListHeadMore.setVisibility(View.VISIBLE);
 600         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 601         final ArrayList<MobileLedgerProfile> profiles = Data.profiles.getValue();
 602         findViewById(R.id.nav_profile_list).setMinimumHeight(
 603                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 604                        (profiles != null ? profiles.size() : 0)));
 605     }
 606     private void collapseProfileList() {
 607         boolean wasExpanded = profileListExpanded;
 608         profileListExpanded = false;
 609
 610         if (wasExpanded) {
 611             final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 612             animation.setAnimationListener(new Animation.AnimationListener() {
 613                 @Override
 614                 public void onAnimationStart(Animation animation) {
 615
 616                 }
 617                 @Override
 618                 public void onAnimationEnd(Animation animation) {
 619                     profileListContainer.setVisibility(View.GONE);
 620                 }
 621                 @Override
 622                 public void onAnimationRepeat(Animation animation) {
 623
 624                 }
 625             });
 626             mProfileListAdapter.stopEditingProfiles();
 627
 628             profileListContainer.startAnimation(animation);
 629             profileListHeadArrow.setRotation(0f);
 630             profileListHeadArrow
 631                     .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 632             final Animation moreAnimation = AnimationUtils.loadAnimation(this, R.anim.fade_out);
 633             moreAnimation.setAnimationListener(new Animation.AnimationListener() {
 634                 @Override
 635                 public void onAnimationStart(Animation animation) {
 636                 }
 637                 @Override
 638                 public void onAnimationEnd(Animation animation) {
 639                     profileListHeadMore.setVisibility(View.GONE);
 640                 }
 641                 @Override
 642                 public void onAnimationRepeat(Animation animation) {
 643                 }
 644             });
 645             profileListHeadMore.startAnimation(moreAnimation);
 646         }
 647         else {
 648             profileListContainer.setVisibility(View.GONE);
 649             profileListHeadArrow.setRotation(0f);
 650             profileListHeadMore.setVisibility(View.GONE);
 651         }
 652     }
 653     public void onAccountSummaryRowViewClicked(View view) {
 654         ViewGroup row;
 655         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 656         else row = (ViewGroup) view.getParent();
 657
 658         LedgerAccount acc = (LedgerAccount) row.getTag();
 659         switch (view.getId()) {
 660             case R.id.account_row_acc_name:
 661             case R.id.account_expander:
 662             case R.id.account_expander_container:
 663                 debug("accounts", "Account expander clicked");
 664                 if (!acc.hasSubAccounts()) return;
 665
 666                 boolean wasExpanded = acc.isExpanded();
 667
 668                 View arrow = row.findViewById(R.id.account_expander_container);
 669
 670                 arrow.clearAnimation();
 671                 ViewPropertyAnimator animator = arrow.animate();
 672
 673                 acc.toggleExpanded();
 674                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 675                         new Object[]{acc.isExpanded(), acc.getName(), profile.getUuid()
 676                         });
 677
 678                 if (wasExpanded) {
 679                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 680                     arrow.setRotation(0);
 681                     animator.rotationBy(180);
 682
 683                     // removing all child accounts from the view
 684                     int start = -1, count = 0;
 685                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 686                         for (int i = 0; i < Data.accounts.size(); i++) {
 687                             if (acc.isParentOf(Data.accounts.get(i))) {
 688 //                                debug("accounts", String.format("Found a child '%s' at position %d",
 689 //                                        Data.accounts.get(i).getName(), i));
 690                                 if (start == -1) {
 691                                     start = i;
 692                                 }
 693                                 count++;
 694                             }
 695                             else {
 696                                 if (start != -1) {
 697 //                                    debug("accounts",
 698 //                                            String.format("Found a non-child '%s' at position %d",
 699 //                                                    Data.accounts.get(i).getName(), i));
 700                                     break;
 701                                 }
 702                             }
 703                         }
 704
 705                         if (start != -1) {
 706                             for (int j = 0; j < count; j++) {
 707 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 708 //                                        Data.accounts.get(start).getName()));
 709                                 Data.accounts.removeQuietly(start);
 710                             }
 711
 712                             mAccountSummaryFragment.modelAdapter
 713                                     .notifyItemRangeRemoved(start, count);
 714                         }
 715                     }
 716                 }
 717                 else {
 718                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 719                     arrow.setRotation(180);
 720                     animator.rotationBy(-180);
 721                     List<LedgerAccount> children = profile.loadVisibleChildAccountsOf(acc);
 722                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 723                         int parentPos = Data.accounts.indexOf(acc);
 724                         if (parentPos != -1) {
 725                             // may have disappeared in a concurrent refresh operation
 726                             Data.accounts.addAllQuietly(parentPos + 1, children);
 727                             mAccountSummaryFragment.modelAdapter
 728                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 729                         }
 730                     }
 731                 }
 732                 break;
 733             case R.id.account_row_acc_amounts:
 734                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 735                     acc.toggleAmountsExpanded();
 736                     DbOpQueue
 737                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 738                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 739                                                  profile.getUuid()
 740                                     });
 741                     Data.accounts.triggerItemChangedNotification(acc);
 742                 }
 743                 break;
 744         }
 745     }
 746
 747     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 748
 749         SectionsPagerAdapter(FragmentManager fm) {
 750             super(fm);
 751         }
 752
 753         @NotNull
 754         @Override
 755         public Fragment getItem(int position) {
 756             debug("main", String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 757             switch (position) {
 758                 case 0:
 759 //                    debug("flow", "Creating account summary fragment");
 760                     return mAccountSummaryFragment = new AccountSummaryFragment();
 761                 case 1:
 762                     return new TransactionListFragment();
 763                 default:
 764                     throw new IllegalStateException(
 765                             String.format("Unexpected fragment index: " + "%d", position));
 766             }
 767         }
 768
 769         @Override
 770         public int getCount() {
 771             return 2;
 772         }
 773     }
 774 }