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