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.res.ColorStateList;
  23 import android.graphics.Color;
  24 import android.os.AsyncTask;
  25 import android.os.Build;
  26 import android.os.Bundle;
  27 import android.util.Log;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.view.ViewPropertyAnimator;
  31 import android.view.animation.Animation;
  32 import android.view.animation.AnimationUtils;
  33 import android.widget.LinearLayout;
  34 import android.widget.ProgressBar;
  35 import android.widget.TextView;
  36 import android.widget.Toast;
  37
  38 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  39
  40 import net.ktnx.mobileledger.R;
  41 import net.ktnx.mobileledger.async.DbOpQueue;
  42 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  43 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  44 import net.ktnx.mobileledger.model.Data;
  45 import net.ktnx.mobileledger.model.LedgerAccount;
  46 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  47 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  48 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  49 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  50 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  51 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  52 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  53 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  54 import net.ktnx.mobileledger.utils.Colors;
  55 import net.ktnx.mobileledger.utils.LockHolder;
  56 import net.ktnx.mobileledger.utils.MLDB;
  57
  58 import java.lang.ref.WeakReference;
  59 import java.text.DateFormat;
  60 import java.util.Date;
  61 import java.util.List;
  62 import java.util.Observer;
  63
  64 import androidx.appcompat.app.ActionBarDrawerToggle;
  65 import androidx.appcompat.widget.Toolbar;
  66 import androidx.core.view.GravityCompat;
  67 import androidx.drawerlayout.widget.DrawerLayout;
  68 import androidx.fragment.app.Fragment;
  69 import androidx.fragment.app.FragmentManager;
  70 import androidx.fragment.app.FragmentPagerAdapter;
  71 import androidx.recyclerview.widget.LinearLayoutManager;
  72 import androidx.recyclerview.widget.RecyclerView;
  73 import androidx.viewpager.widget.ViewPager;
  74
  75 public class MainActivity extends ProfileThemedActivity {
  76     public static final String STATE_CURRENT_PAGE = "current_page";
  77     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  78     public static final String STATE_ACC_FILTER = "account_filter";
  79     public AccountSummaryFragment mAccountSummaryFragment;
  80     DrawerLayout drawer;
  81     private LinearLayout profileListContainer;
  82     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  83     private LinearLayout profileListHeadMoreAndCancel;
  84     private FragmentManager fragmentManager;
  85     private TextView tvLastUpdate;
  86     private RetrieveTransactionsTask retrieveTransactionsTask;
  87     private View bTransactionListCancelDownload;
  88     private ProgressBar progressBar;
  89     private LinearLayout progressLayout;
  90     private SectionsPagerAdapter mSectionsPagerAdapter;
  91     private ViewPager mViewPager;
  92     private FloatingActionButton fab;
  93     private boolean profileModificationEnabled = false;
  94     private boolean profileListExpanded = false;
  95     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  96     private int mCurrentPage;
  97     private String mAccountFilter;
  98     private boolean mBackMeansToAccountList = false;
  99     private Observer profileObserver;
 100     private Observer profilesObserver;
 101     private Observer lastUpdateDateObserver;
 102     @Override
 103     protected void onStart() {
 104         super.onStart();
 105
 106         Log.d("flow", "MainActivity.onStart()");
 107         mViewPager.setCurrentItem(mCurrentPage, false);
 108         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 109
 110     }
 111     @Override
 112     protected void onSaveInstanceState(Bundle outState) {
 113         super.onSaveInstanceState(outState);
 114         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 115         if (TransactionListFragment.accountFilter.get() != null)
 116             outState.putString(STATE_ACC_FILTER, TransactionListFragment.accountFilter.get());
 117     }
 118     @Override
 119     protected void onDestroy() {
 120         mSectionsPagerAdapter = null;
 121         Data.profile.deleteObserver(profileObserver);
 122         profileObserver = null;
 123         Data.profiles.deleteObserver(profilesObserver);
 124         profilesObserver = null;
 125         Data.lastUpdateDate.deleteObserver(lastUpdateDateObserver);
 126         RecyclerView root = findViewById(R.id.nav_profile_list);
 127         if (root != null) root.setAdapter(null);
 128         super.onDestroy();
 129     }
 130     @Override
 131     protected void onCreate(Bundle savedInstanceState) {
 132         super.onCreate(savedInstanceState);
 133         Log.d("flow", "MainActivity.onCreate()");
 134         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 135         Colors.setupTheme(this, profileColor);
 136         Colors.profileThemeId = profileColor;
 137         setContentView(R.layout.activity_main);
 138
 139         fab = findViewById(R.id.btn_add_transaction);
 140         profileListContainer = findViewById(R.id.nav_profile_list_container);
 141         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 142         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 143         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 144         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 145         drawer = findViewById(R.id.drawer_layout);
 146         tvLastUpdate = findViewById(R.id.transactions_last_update);
 147         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 148         progressBar = findViewById(R.id.transaction_list_progress_bar);
 149         progressLayout = findViewById(R.id.transaction_progress_layout);
 150         fragmentManager = getSupportFragmentManager();
 151         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 152         mViewPager = findViewById(R.id.root_frame);
 153
 154         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 155         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 156
 157
 158         Toolbar toolbar = findViewById(R.id.toolbar);
 159         setSupportActionBar(toolbar);
 160
 161         if (profileObserver == null) {
 162             profileObserver = (o, arg) -> {
 163                 MobileLedgerProfile profile = Data.profile.get();
 164                 MainActivity.this.runOnUiThread(() -> {
 165
 166                     Data.transactions.clear();
 167                     Log.d("transactions", "requesting list reload");
 168                     TransactionListViewModel.scheduleTransactionListReload();
 169
 170                     Data.accounts.clear();
 171                     AccountSummaryViewModel.scheduleAccountListReload();
 172
 173                     if (profile == null) MainActivity.this.setTitle(R.string.app_name);
 174                     else MainActivity.this.setTitle(profile.getName());
 175                     MainActivity.this.updateLastUpdateTextFromDB();
 176                     int old_index = -1;
 177                     int new_index = -1;
 178                     if (arg != null) {
 179                         MobileLedgerProfile old = (MobileLedgerProfile) arg;
 180                         old_index = Data.getProfileIndex(old);
 181                         new_index = Data.getProfileIndex(profile);
 182                     }
 183
 184                     if ((old_index != -1) && (new_index != -1)) {
 185                         mProfileListAdapter.notifyItemChanged(old_index);
 186                         mProfileListAdapter.notifyItemChanged(new_index);
 187                     }
 188                     else mProfileListAdapter.notifyDataSetChanged();
 189
 190                     MainActivity.this.collapseProfileList();
 191
 192                     int newProfileTheme = (profile == null) ? -1 : profile.getThemeId();
 193                     if (newProfileTheme != Colors.profileThemeId) {
 194                         Log.d("profiles",
 195                                 String.format("profile theme %d → %d", Colors.profileThemeId,
 196                                         newProfileTheme));
 197                         MainActivity.this.profileThemeChanged();
 198                         Colors.profileThemeId = newProfileTheme;
 199                         // profileThemeChanged would restart the activity, so no need to reload the
 200                         // data sets below
 201                         return;
 202                     }
 203                     drawer.closeDrawers();
 204
 205                     if (profile == null) {
 206                         toolbar.setSubtitle(null);
 207                         fab.hide();
 208                     }
 209                     else {
 210                         if (profile.isPostingPermitted()) {
 211                             toolbar.setSubtitle(null);
 212                             fab.show();
 213                         }
 214                         else {
 215                             toolbar.setSubtitle(R.string.profile_subitlte_read_only);
 216                             fab.hide();
 217                         }
 218                     }
 219                 });
 220             };
 221             Data.profile.addObserver(profileObserver);
 222         }
 223
 224         if (profilesObserver == null) {
 225             profilesObserver = (o, arg) -> {
 226                 findViewById(R.id.nav_profile_list).setMinimumHeight(
 227                         (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 228                                Data.profiles.size()));
 229
 230                 Log.d("profiles", "profile list changed");
 231                 if (arg == null) mProfileListAdapter.notifyDataSetChanged();
 232                 else mProfileListAdapter.notifyItemChanged((int) arg);
 233             };
 234             Data.profiles.addObserver(profilesObserver);
 235         }
 236
 237         ActionBarDrawerToggle toggle =
 238                 new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open,
 239                         R.string.navigation_drawer_close);
 240         drawer.addDrawerListener(toggle);
 241         toggle.syncState();
 242
 243         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 244
 245         try {
 246             PackageInfo pi =
 247                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 248             ver.setText(pi.versionName);
 249         }
 250         catch (Exception e) {
 251             e.printStackTrace();
 252         }
 253
 254         if (progressBar == null)
 255             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 256         if (progressLayout == null) throw new RuntimeException(
 257                 "Can't get hold on the transaction value progress bar layout");
 258
 259         markDrawerItemCurrent(R.id.nav_account_summary);
 260
 261         mViewPager.setAdapter(mSectionsPagerAdapter);
 262         mViewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
 263             @Override
 264             public void onPageSelected(int position) {
 265                 switch (position) {
 266                     case 0:
 267                         markDrawerItemCurrent(R.id.nav_account_summary);
 268                         break;
 269                     case 1:
 270                         markDrawerItemCurrent(R.id.nav_latest_transactions);
 271                         break;
 272                     default:
 273                         Log.e("MainActivity", String.format("Unexpected page index %d", position));
 274                 }
 275
 276                 super.onPageSelected(position);
 277             }
 278         });
 279
 280         mCurrentPage = 0;
 281         if (savedInstanceState != null) {
 282             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 283             if (currentPage != -1) {
 284                 mCurrentPage = currentPage;
 285             }
 286             mAccountFilter = savedInstanceState.getString(STATE_ACC_FILTER, null);
 287         }
 288
 289         lastUpdateDateObserver = (o, arg) -> {
 290             Log.d("main", "lastUpdateDate changed");
 291             runOnUiThread(this::updateLastUpdateDisplay);
 292         };
 293         Data.lastUpdateDate.addObserver(lastUpdateDateObserver);
 294
 295         updateLastUpdateDisplay();
 296
 297         findViewById(R.id.btn_no_profiles_add)
 298                 .setOnClickListener(v -> startEditProfileActivity(null));
 299
 300         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 301
 302         findViewById(R.id.nav_new_profile_button)
 303                 .setOnClickListener(v -> startEditProfileActivity(null));
 304
 305         RecyclerView root = findViewById(R.id.nav_profile_list);
 306         if (root == null)
 307             throw new RuntimeException("Can't get hold on the transaction value view");
 308
 309         if (mProfileListAdapter == null) mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 310         root.setAdapter(mProfileListAdapter);
 311
 312         mProfileListAdapter.addEditingProfilesObserver((o, arg) -> {
 313             if (mProfileListAdapter.isEditingProfiles()) {
 314                 profileListHeadArrow.clearAnimation();
 315                 profileListHeadArrow.setVisibility(View.GONE);
 316                 profileListHeadMore.setVisibility(View.GONE);
 317                 profileListHeadCancel.setVisibility(View.VISIBLE);
 318             }
 319             else {
 320                 profileListHeadArrow.setRotation(180f);
 321                 profileListHeadArrow.setVisibility(View.VISIBLE);
 322                 profileListHeadCancel.setVisibility(View.GONE);
 323                 profileListHeadMore.setVisibility(View.GONE);
 324                 profileListHeadMore.setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 325             }
 326         });
 327
 328         LinearLayoutManager llm = new LinearLayoutManager(this);
 329
 330         llm.setOrientation(RecyclerView.VERTICAL);
 331         root.setLayoutManager(llm);
 332
 333         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 334         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 335         profileListHeadMoreAndCancel
 336                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 337
 338         drawer.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
 339             @Override
 340             public void onDrawerClosed(View drawerView) {
 341                 super.onDrawerClosed(drawerView);
 342                 collapseProfileList();
 343             }
 344         });
 345
 346         setupProfile();
 347
 348         updateLastUpdateTextFromDB();
 349         Date lastUpdate = Data.lastUpdateDate.get();
 350
 351         long now = new Date().getTime();
 352         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 353             if (lastUpdate == null) Log.d("db::", "WEB data never fetched. scheduling a fetch");
 354             else Log.d("db",
 355                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 356                             lastUpdate.getTime() / 1000f, now / 1000f));
 357
 358             scheduleTransactionListRetrieval();
 359         }
 360     }
 361     private void updateLastUpdateDisplay() {
 362         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 363         TextView v = findViewById(R.id.transactions_last_update);
 364         Date date = Data.lastUpdateDate.get();
 365         if (date == null) {
 366             l.setVisibility(View.INVISIBLE);
 367             Log.d("main", "no last update date :(");
 368         }
 369         else {
 370             final String text = DateFormat.getDateTimeInstance().format(date);
 371             v.setText(text);
 372             l.setVisibility(View.VISIBLE);
 373             Log.d("main", String.format("Date formatted: %s", text));
 374         }
 375     }
 376     @Override
 377     public void finish() {
 378         if (profilesObserver != null) {
 379             Data.profiles.deleteObserver(profilesObserver);
 380             profilesObserver = null;
 381         }
 382
 383         if (profileObserver != null) {
 384             Data.profile.deleteObserver(profileObserver);
 385             profileObserver = null;
 386         }
 387
 388         super.finish();
 389     }
 390     private void profileThemeChanged() {
 391         setupProfileColors();
 392
 393         Bundle bundle = new Bundle();
 394         onSaveInstanceState(bundle);
 395         // restart activity to reflect theme change
 396         finish();
 397         Intent intent = new Intent(this, this.getClass());
 398         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 399         startActivity(intent);
 400     }
 401     public void startEditProfileActivity(MobileLedgerProfile profile) {
 402         Intent intent = new Intent(this, ProfileDetailActivity.class);
 403         Bundle args = new Bundle();
 404         if (profile != null) {
 405             int index = Data.getProfileIndex(profile);
 406             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 407         }
 408         intent.putExtras(args);
 409         startActivity(intent, args);
 410     }
 411     private void setupProfile() {
 412         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 413         MobileLedgerProfile profile;
 414
 415         if (Data.profiles.isEmpty()) {
 416             profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
 417         }
 418         else {
 419             try(LockHolder lh = Data.profiles.lockForReading()) {
 420                 int i = Data.getProfileIndex(profileUUID);
 421                 if (i == -1 ) i = 0;
 422                 profile = Data.profiles.get(i);
 423             }
 424         }
 425
 426         if (Data.profiles.isEmpty()) {
 427             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 428             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 429             return;
 430         }
 431
 432         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 433         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 434
 435         if (profile == null) profile = Data.profiles.get(0);
 436
 437         if (profile == null) throw new AssertionError("profile must have a value");
 438
 439         Data.setCurrentProfile(profile);
 440     }
 441     public void fabNewTransactionClicked(View view) {
 442         Intent intent = new Intent(this, NewTransactionActivity.class);
 443         startActivity(intent);
 444         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 445     }
 446     public void navSettingsClicked(View view) {
 447         Intent intent = new Intent(this, SettingsActivity.class);
 448         startActivity(intent);
 449         drawer.closeDrawers();
 450     }
 451     public void markDrawerItemCurrent(int id) {
 452         TextView item = drawer.findViewById(id);
 453         item.setBackgroundColor(Colors.tableRowDarkBG);
 454
 455         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 456         for (int i = 0; i < actions.getChildCount(); i++) {
 457             View view = actions.getChildAt(i);
 458             if (view.getId() != id) {
 459                 view.setBackgroundColor(Color.TRANSPARENT);
 460             }
 461         }
 462     }
 463     public void onAccountSummaryClicked(View view) {
 464         drawer.closeDrawers();
 465
 466         showAccountSummaryFragment();
 467     }
 468     private void showAccountSummaryFragment() {
 469         mViewPager.setCurrentItem(0, true);
 470         TransactionListFragment.accountFilter.set(null);
 471 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 472 //        accountSummaryFragment = new AccountSummaryFragment();
 473 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 474 //        ft.commit();
 475 //        currentFragment = accountSummaryFragment;
 476     }
 477     public void onLatestTransactionsClicked(View view) {
 478         drawer.closeDrawers();
 479
 480         showTransactionsFragment((String) null);
 481     }
 482     private void resetFragmentBackStack() {
 483 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 484     }
 485     private void showTransactionsFragment(String accName) {
 486         TransactionListFragment.accountFilter.set(accName);
 487         TransactionListFragment.accountFilter.notifyObservers();
 488         mViewPager.setCurrentItem(1, true);
 489     }
 490     private void showTransactionsFragment(LedgerAccount account) {
 491         showTransactionsFragment((account == null) ? (String) null : account.getName());
 492 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 493 //        if (transactionListFragment == null) {
 494 //            Log.d("flow", "MainActivity creating TransactionListFragment");
 495 //            transactionListFragment = new TransactionListFragment();
 496 //        }
 497 //        Bundle bundle = new Bundle();
 498 //        if (account != null) {
 499 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 500 //                    account.getName());
 501 //        }
 502 //        transactionListFragment.setArguments(bundle);
 503 //        ft.replace(R.id.root_frame, transactionListFragment);
 504 //        if (account != null)
 505 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 506 //        ft.commit();
 507 //
 508 //        currentFragment = transactionListFragment;
 509     }
 510     public void showAccountTransactions(LedgerAccount account) {
 511         mBackMeansToAccountList = true;
 512         showTransactionsFragment(account);
 513     }
 514     @Override
 515     public void onBackPressed() {
 516         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 517         if (drawer.isDrawerOpen(GravityCompat.START)) {
 518             drawer.closeDrawer(GravityCompat.START);
 519         }
 520         else {
 521             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 522                 TransactionListFragment.accountFilter.set(null);
 523                 showAccountSummaryFragment();
 524                 mBackMeansToAccountList = false;
 525             }
 526             else {
 527                 Log.d("fragments", String.format("manager stack: %d",
 528                         fragmentManager.getBackStackEntryCount()));
 529
 530                 super.onBackPressed();
 531             }
 532         }
 533     }
 534     public void updateLastUpdateTextFromDB() {
 535         {
 536             final MobileLedgerProfile profile = Data.profile.get();
 537             long last_update =
 538                     (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 539
 540             Log.d("transactions", String.format("Last update = %d", last_update));
 541             if (last_update == 0) {
 542                 Data.lastUpdateDate.set(null);
 543             }
 544             else {
 545                 Data.lastUpdateDate.set(new Date(last_update));
 546             }
 547         }
 548     }
 549     public void scheduleTransactionListRetrieval() {
 550         if (Data.profile.get() == null) return;
 551
 552         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 553
 554         retrieveTransactionsTask.execute();
 555     }
 556     public void onStopTransactionRefreshClick(View view) {
 557         Log.d("interactive", "Cancelling transactions refresh");
 558         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 559         bTransactionListCancelDownload.setEnabled(false);
 560     }
 561     public void onRetrieveDone(String error) {
 562         progressLayout.setVisibility(View.GONE);
 563
 564         if (error == null) {
 565             updateLastUpdateTextFromDB();
 566
 567             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 568             TransactionListViewModel.scheduleTransactionListReload();
 569         }
 570         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 571     }
 572     public void onRetrieveStart() {
 573         bTransactionListCancelDownload.setEnabled(true);
 574         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 575         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 576         progressBar.setIndeterminate(true);
 577         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 578         else progressBar.setProgress(0);
 579         progressLayout.setVisibility(View.VISIBLE);
 580     }
 581     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 582         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 583             (progress.getTotal() == 0))
 584         {
 585             progressBar.setIndeterminate(true);
 586         }
 587         else {
 588             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 589                 progressBar.setMin(0);
 590             }
 591             progressBar.setMax(progress.getTotal());
 592             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 593                 progressBar.setProgress(progress.getProgress(), true);
 594             }
 595             else progressBar.setProgress(progress.getProgress());
 596             progressBar.setIndeterminate(false);
 597         }
 598     }
 599     public void fabShouldShow() {
 600         MobileLedgerProfile profile = Data.profile.get();
 601         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 602     }
 603     public void navProfilesHeadClicked(View view) {
 604         if (profileListExpanded) {
 605             collapseProfileList();
 606         }
 607         else {
 608             expandProfileList();
 609         }
 610     }
 611     private void expandProfileList() {
 612         profileListExpanded = true;
 613
 614
 615         profileListContainer.setVisibility(View.VISIBLE);
 616         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 617         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 618         profileListHeadMore.setVisibility(View.VISIBLE);
 619         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 620         findViewById(R.id.nav_profile_list).setMinimumHeight(
 621                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 622                        Data.profiles.size()));
 623     }
 624     private void collapseProfileList() {
 625         profileListExpanded = false;
 626
 627         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 628         animation.setAnimationListener(new Animation.AnimationListener() {
 629             @Override
 630             public void onAnimationStart(Animation animation) {
 631
 632             }
 633             @Override
 634             public void onAnimationEnd(Animation animation) {
 635                 profileListContainer.setVisibility(View.GONE);
 636             }
 637             @Override
 638             public void onAnimationRepeat(Animation animation) {
 639
 640             }
 641         });
 642         mProfileListAdapter.stopEditingProfiles();
 643
 644         profileListContainer.startAnimation(animation);
 645         profileListHeadArrow.setRotation(0f);
 646         profileListHeadArrow
 647                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 648         profileListHeadMore.setVisibility(View.GONE);
 649     }
 650     public void onProfileRowClicked(View v) {
 651         Data.setCurrentProfile((MobileLedgerProfile) v.getTag());
 652     }
 653     public void enableProfileModifications() {
 654         profileModificationEnabled = true;
 655         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 656         for (int i = 0; i < profileList.getChildCount(); i++) {
 657             View aRow = profileList.getChildAt(i);
 658             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.VISIBLE);
 659             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.VISIBLE);
 660         }
 661         // FIXME enable rearranging
 662
 663     }
 664     public void disableProfileModifications() {
 665         profileModificationEnabled = false;
 666         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 667         for (int i = 0; i < profileList.getChildCount(); i++) {
 668             View aRow = profileList.getChildAt(i);
 669             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.GONE);
 670             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.INVISIBLE);
 671         }
 672         // FIXME disable rearranging
 673
 674     }
 675     public void onAccountSummaryRowViewClicked(View view) {
 676         ViewGroup row = (ViewGroup) view.getParent();
 677         LedgerAccount acc = (LedgerAccount) row.getTag();
 678         switch (view.getId()) {
 679             case R.id.account_row_acc_name:
 680             case R.id.account_expander_container:
 681                 Log.d("accounts", "Account expander clicked");
 682                 if (!acc.hasSubAccounts()) return;
 683
 684                 boolean wasExpanded = acc.isExpanded();
 685
 686                 View arrow = row.findViewById(R.id.account_expander_container);
 687
 688                 arrow.clearAnimation();
 689                 ViewPropertyAnimator animator = arrow.animate();
 690
 691                 acc.toggleExpanded();
 692                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 693                         new Object[]{acc.isExpanded(), acc.getName(), Data.profile.get().getUuid()
 694                         });
 695
 696                 if (wasExpanded) {
 697                     Log.d("accounts", String.format("Collapsing account '%s'", acc.getName()));
 698                     arrow.setRotation(0);
 699                     animator.rotationBy(180);
 700
 701                     // removing all child accounts from the view
 702                     int start = -1, count = 0;
 703                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 704                         for (int i = 0; i < Data.accounts.size(); i++) {
 705                             if (acc.isParentOf(Data.accounts.get(i))) {
 706 //                                Log.d("accounts", String.format("Found a child '%s' at position %d",
 707 //                                        Data.accounts.get(i).getName(), i));
 708                                 if (start == -1) {
 709                                     start = i;
 710                                 }
 711                                 count++;
 712                             }
 713                             else {
 714                                 if (start != -1) {
 715 //                                    Log.d("accounts",
 716 //                                            String.format("Found a non-child '%s' at position %d",
 717 //                                                    Data.accounts.get(i).getName(), i));
 718                                     break;
 719                                 }
 720                             }
 721                         }
 722
 723                         if (start != -1) {
 724                             for (int j = 0; j < count; j++) {
 725 //                                Log.d("accounts", String.format("Removing item %d: %s", start + j,
 726 //                                        Data.accounts.get(start).getName()));
 727                                 Data.accounts.removeQuietly(start);
 728                             }
 729
 730                             mAccountSummaryFragment.modelAdapter
 731                                     .notifyItemRangeRemoved(start, count);
 732                         }
 733                     }
 734                 }
 735                 else {
 736                     Log.d("accounts", String.format("Expanding account '%s'", acc.getName()));
 737                     arrow.setRotation(180);
 738                     animator.rotationBy(-180);
 739                     List<LedgerAccount> children =
 740                             Data.profile.get().loadVisibleChildAccountsOf(acc);
 741                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 742                         int parentPos = Data.accounts.indexOf(acc);
 743                         if (parentPos != -1) {
 744                             // may have disappeared in a concurrent refresh operation
 745                             Data.accounts.addAllQuietly(parentPos + 1, children);
 746                             mAccountSummaryFragment.modelAdapter
 747                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 748                         }
 749                     }
 750                 }
 751                 break;
 752             case R.id.account_row_acc_amounts:
 753                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 754                     acc.toggleAmountsExpanded();
 755                     DbOpQueue
 756                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 757                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 758                                                  Data.profile.get().getUuid()
 759                                     });
 760                     Data.accounts.triggerItemChangedNotification(acc);
 761                 }
 762                 break;
 763         }
 764     }
 765
 766     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 767
 768         public SectionsPagerAdapter(FragmentManager fm) {
 769             super(fm);
 770         }
 771
 772         @Override
 773         public Fragment getItem(int position) {
 774             Log.d("main", String.format("Switching to fragment %d", position));
 775             switch (position) {
 776                 case 0:
 777 //                    Log.d("flow", "Creating account summary fragment");
 778                     return mAccountSummaryFragment = new AccountSummaryFragment();
 779                 case 1:
 780                     return new TransactionListFragment();
 781                 default:
 782                     throw new IllegalStateException(
 783                             String.format("Unexpected fragment index: " + "%d", position));
 784             }
 785         }
 786
 787         @Override
 788         public int getCount() {
 789             return 2;
 790         }
 791     }
 792 }