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

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Intent;
  21 import android.content.SharedPreferences;
  22 import android.content.pm.PackageInfo;
  23 import android.content.pm.ShortcutInfo;
  24 import android.content.pm.ShortcutManager;
  25 import android.content.res.ColorStateList;
  26 import android.graphics.Color;
  27 import android.graphics.drawable.Icon;
  28 import android.os.AsyncTask;
  29 import android.os.Build;
  30 import android.os.Bundle;
  31 import android.util.Log;
  32 import android.view.View;
  33 import android.view.ViewGroup;
  34 import android.view.ViewPropertyAnimator;
  35 import android.view.animation.Animation;
  36 import android.view.animation.AnimationUtils;
  37 import android.widget.LinearLayout;
  38 import android.widget.ProgressBar;
  39 import android.widget.TextView;
  40 import android.widget.Toast;
  41
  42 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  43
  44 import net.ktnx.mobileledger.R;
  45 import net.ktnx.mobileledger.async.DbOpQueue;
  46 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  47 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  48 import net.ktnx.mobileledger.model.Data;
  49 import net.ktnx.mobileledger.model.LedgerAccount;
  50 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  51 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  52 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  53 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  54 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  55 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  56 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  57 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  58 import net.ktnx.mobileledger.utils.Colors;
  59 import net.ktnx.mobileledger.utils.GetOptCallback;
  60 import net.ktnx.mobileledger.utils.LockHolder;
  61 import net.ktnx.mobileledger.utils.MLDB;
  62
  63 import org.jetbrains.annotations.NotNull;
  64
  65 import java.text.DateFormat;
  66 import java.util.ArrayList;
  67 import java.util.Date;
  68 import java.util.List;
  69 import java.util.Locale;
  70 import java.util.Observer;
  71
  72 import androidx.appcompat.app.ActionBarDrawerToggle;
  73 import androidx.appcompat.widget.Toolbar;
  74 import androidx.core.view.GravityCompat;
  75 import androidx.drawerlayout.widget.DrawerLayout;
  76 import androidx.fragment.app.Fragment;
  77 import androidx.fragment.app.FragmentManager;
  78 import androidx.fragment.app.FragmentPagerAdapter;
  79 import androidx.recyclerview.widget.LinearLayoutManager;
  80 import androidx.recyclerview.widget.RecyclerView;
  81 import androidx.viewpager.widget.ViewPager;
  82
  83 import static net.ktnx.mobileledger.utils.Logger.debug;
  84
  85 public class MainActivity extends ProfileThemedActivity {
  86     public static final String STATE_CURRENT_PAGE = "current_page";
  87     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  88     public static final String STATE_ACC_FILTER = "account_filter";
  89     private static final String PREF_THEME_ID = "themeId";
  90     public AccountSummaryFragment mAccountSummaryFragment;
  91     DrawerLayout drawer;
  92     private LinearLayout profileListContainer;
  93     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  94     private FragmentManager fragmentManager;
  95     private View bTransactionListCancelDownload;
  96     private ProgressBar progressBar;
  97     private LinearLayout progressLayout;
  98     private SectionsPagerAdapter mSectionsPagerAdapter;
  99     private ViewPager mViewPager;
 100     private FloatingActionButton fab;
 101     private boolean profileListExpanded = false;
 102     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 103     private int mCurrentPage;
 104     private String mAccountFilter;
 105     private boolean mBackMeansToAccountList = false;
 106     private Toolbar mToolbar;
 107     private DrawerLayout.SimpleDrawerListener drawerListener;
 108     private ActionBarDrawerToggle barDrawerToggle;
 109     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 110     private Observer editingProfilesObserver;
 111     private MobileLedgerProfile profile;
 112     @Override
 113     protected void onStart() {
 114         super.onStart();
 115
 116         debug("flow", "MainActivity.onStart()");
 117         mViewPager.setCurrentItem(mCurrentPage, false);
 118         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 119         else Data.accountFilter.setValue(null);
 120
 121     }
 122     @Override
 123     protected void onSaveInstanceState(@NotNull Bundle outState) {
 124         super.onSaveInstanceState(outState);
 125         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 126         if (mAccountFilter != null) outState.putString(STATE_ACC_FILTER, mAccountFilter);
 127     }
 128     @Override
 129     protected void onDestroy() {
 130         mSectionsPagerAdapter = null;
 131         RecyclerView root = findViewById(R.id.nav_profile_list);
 132         if (root != null) root.setAdapter(null);
 133         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 134         drawerListener = null;
 135         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 136         barDrawerToggle = null;
 137         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 138         pageChangeListener = null;
 139         if (mProfileListAdapter != null)
 140             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 141         editingProfilesObserver = null;
 142         super.onDestroy();
 143     }
 144     @Override
 145     protected void setupProfileColors() {
 146         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 147         int profileColor = prefs.getInt(PREF_THEME_ID, -2);
 148         if (profileColor == -2) profileColor = Data.retrieveCurrentThemeIdFromDb();
 149         Colors.setupTheme(this, profileColor);
 150         Colors.profileThemeId = profileColor;
 151         storeThemeIdInPrefs(profileColor);
 152     }
 153     @Override
 154     protected void onCreate(Bundle savedInstanceState) {
 155         super.onCreate(savedInstanceState);
 156         debug("flow", "MainActivity.onCreate()");
 157         setContentView(R.layout.activity_main);
 158
 159         fab = findViewById(R.id.btn_add_transaction);
 160         profileListContainer = findViewById(R.id.nav_profile_list_container);
 161         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 162         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 163         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 164         LinearLayout profileListHeadMoreAndCancel =
 165                 findViewById(R.id.nav_profile_list_head_buttons);
 166         drawer = findViewById(R.id.drawer_layout);
 167         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 168         progressBar = findViewById(R.id.transaction_list_progress_bar);
 169         progressLayout = findViewById(R.id.transaction_progress_layout);
 170         fragmentManager = getSupportFragmentManager();
 171         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 172         mViewPager = findViewById(R.id.root_frame);
 173
 174         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 175         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 176
 177
 178         mToolbar = findViewById(R.id.toolbar);
 179         setSupportActionBar(mToolbar);
 180
 181         Data.profile.observe(this, this::onProfileChanged);
 182
 183         Data.profiles.observe(this, this::onProfileListChanged);
 184
 185         if (barDrawerToggle == null) {
 186             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 187                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 188             drawer.addDrawerListener(barDrawerToggle);
 189         }
 190         barDrawerToggle.syncState();
 191
 192         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 193
 194         try {
 195             PackageInfo pi =
 196                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 197             ver.setText(pi.versionName);
 198         }
 199         catch (Exception e) {
 200             e.printStackTrace();
 201         }
 202
 203         if (progressBar == null)
 204             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 205         if (progressLayout == null) throw new RuntimeException(
 206                 "Can't get hold on the transaction value progress bar layout");
 207
 208         markDrawerItemCurrent(R.id.nav_account_summary);
 209
 210         mViewPager.setAdapter(mSectionsPagerAdapter);
 211
 212         if (pageChangeListener == null) {
 213             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 214                 @Override
 215                 public void onPageSelected(int position) {
 216                     switch (position) {
 217                         case 0:
 218                             markDrawerItemCurrent(R.id.nav_account_summary);
 219                             break;
 220                         case 1:
 221                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 222                             break;
 223                         default:
 224                             Log.e("MainActivity",
 225                                     String.format("Unexpected page index %d", position));
 226                     }
 227
 228                     super.onPageSelected(position);
 229                 }
 230             };
 231             mViewPager.addOnPageChangeListener(pageChangeListener);
 232         }
 233
 234         mCurrentPage = 0;
 235         if (savedInstanceState != null) {
 236             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 237             if (currentPage != -1) {
 238                 mCurrentPage = currentPage;
 239             }
 240             mAccountFilter = savedInstanceState.getString(STATE_ACC_FILTER, null);
 241         }
 242         else mAccountFilter = null;
 243
 244         Data.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
 245
 246         findViewById(R.id.btn_no_profiles_add)
 247                 .setOnClickListener(v -> startEditProfileActivity(null));
 248
 249         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 250
 251         findViewById(R.id.nav_new_profile_button)
 252                 .setOnClickListener(v -> startEditProfileActivity(null));
 253
 254         RecyclerView root = findViewById(R.id.nav_profile_list);
 255         if (root == null)
 256             throw new RuntimeException("Can't get hold on the transaction value view");
 257
 258         if (mProfileListAdapter == null) mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 259         root.setAdapter(mProfileListAdapter);
 260
 261         if (editingProfilesObserver == null) {
 262             editingProfilesObserver = (o, arg) -> {
 263                 if (mProfileListAdapter.isEditingProfiles()) {
 264                     profileListHeadMore.setVisibility(View.GONE);
 265                     profileListHeadMore
 266                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 267                     profileListHeadCancel.setVisibility(View.VISIBLE);
 268                     profileListHeadCancel
 269                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 270                 }
 271                 else {
 272                     profileListHeadCancel.setVisibility(View.GONE);
 273                     profileListHeadCancel
 274                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 275                     profileListHeadMore.setVisibility(View.GONE);
 276                     if (profileListExpanded) {
 277                         profileListHeadMore.setVisibility(View.VISIBLE);
 278                         profileListHeadMore
 279                                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 280                     }
 281                     else profileListHeadMore.setVisibility(View.GONE);
 282                 }
 283             };
 284             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 285         }
 286
 287         LinearLayoutManager llm = new LinearLayoutManager(this);
 288
 289         llm.setOrientation(RecyclerView.VERTICAL);
 290         root.setLayoutManager(llm);
 291
 292         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 293         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 294         profileListHeadMoreAndCancel
 295                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 296
 297         if (drawerListener == null) {
 298             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 299                 @Override
 300                 public void onDrawerClosed(View drawerView) {
 301                     super.onDrawerClosed(drawerView);
 302                     collapseProfileList();
 303                 }
 304             };
 305             drawer.addDrawerListener(drawerListener);
 306         }
 307
 308         findViewById(R.id.nav_profile_list_head_layout)
 309                 .setOnClickListener(this::navProfilesHeadClicked);
 310         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 311         setupProfile();
 312     }
 313     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 314         long now = new Date().getTime();
 315         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 316             if (lastUpdate == null) debug("db::", "WEB data never fetched. scheduling a fetch");
 317             else debug("db", String.format(Locale.ENGLISH,
 318                     "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 319                     lastUpdate.getTime() / 1000f, now / 1000f));
 320
 321             Data.scheduleTransactionListRetrieval(this);
 322         }
 323     }
 324     private void createShortcuts(List<MobileLedgerProfile> list) {
 325         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;
 326
 327         List<ShortcutInfo> shortcuts = new ArrayList<>();
 328         int i = 0;
 329         for (MobileLedgerProfile p : list) {
 330             if (!p.isPostingPermitted()) continue;
 331
 332             ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 333                     .setShortLabel(p.getName())
 334                     .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 335                     .setIntent(
 336                             new Intent(Intent.ACTION_VIEW, null, this, NewTransactionActivity.class)
 337                                     .putExtra("profile_uuid", p.getUuid())).setRank(i).build();
 338             shortcuts.add(si);
 339             i++;
 340         }
 341         ShortcutManager sm = getSystemService(ShortcutManager.class);
 342         sm.setDynamicShortcuts(shortcuts);
 343     }
 344     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
 345         if (newList.isEmpty()) {
 346             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 347             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 348             findViewById(R.id.loading_layout).setVisibility(View.GONE);
 349             return;
 350         }
 351
 352         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 353         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 354         findViewById(R.id.loading_layout).setVisibility(View.GONE);
 355
 356         findViewById(R.id.nav_profile_list).setMinimumHeight(
 357                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 358
 359         debug("profiles", "profile list changed");
 360         mProfileListAdapter.notifyDataSetChanged();
 361
 362         createShortcuts(newList);
 363     }
 364     /** called when the current profile has changed */
 365     private void onProfileChanged(MobileLedgerProfile profile) {
 366         boolean haveProfile = profile != null;
 367         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 368         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 369
 370         if (haveProfile) setTitle(profile.getName());
 371         else setTitle(R.string.app_name);
 372
 373         this.profile = profile;
 374
 375         mProfileListAdapter.notifyDataSetChanged();
 376
 377         int newProfileTheme = haveProfile ? profile.getThemeId() : -1;
 378         if (newProfileTheme != Colors.profileThemeId) {
 379             debug("profiles",
 380                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 381                             newProfileTheme));
 382             MainActivity.this.profileThemeChanged();
 383             Colors.profileThemeId = newProfileTheme;
 384             // profileThemeChanged would restart the activity, so no need to reload the
 385             // data sets below
 386             return;
 387         }
 388         collapseProfileList();
 389
 390         drawer.closeDrawers();
 391
 392         Data.transactions.clear();
 393         debug("transactions", "requesting list reload");
 394         TransactionListViewModel.scheduleTransactionListReload();
 395
 396         Data.accounts.clear();
 397         AccountSummaryViewModel.scheduleAccountListReload();
 398
 399         if (haveProfile) {
 400             if (profile.isPostingPermitted()) {
 401                 mToolbar.setSubtitle(null);
 402                 fab.show();
 403             }
 404             else {
 405                 mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 406                 fab.hide();
 407             }
 408         }
 409         else {
 410             mToolbar.setSubtitle(null);
 411             fab.hide();
 412         }
 413
 414         updateLastUpdateTextFromDB();
 415     }
 416     private void updateLastUpdateDisplay(Date newValue) {
 417         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 418         TextView v = findViewById(R.id.transactions_last_update);
 419         if (newValue == null) {
 420             l.setVisibility(View.INVISIBLE);
 421             debug("main", "no last update date :(");
 422         }
 423         else {
 424             final String text = DateFormat.getDateTimeInstance().format(newValue);
 425             v.setText(text);
 426             l.setVisibility(View.VISIBLE);
 427             debug("main", String.format("Date formatted: %s", text));
 428         }
 429
 430         scheduleDataRetrievalIfStale(newValue);
 431     }
 432     private void profileThemeChanged() {
 433         Bundle bundle = new Bundle();
 434         onSaveInstanceState(bundle);
 435
 436         storeThemeIdInPrefs(profile.getThemeId());
 437
 438         // restart activity to reflect theme change
 439         finish();
 440
 441         // un-hook all observed LiveData
 442         Data.profile.removeObservers(this);
 443         Data.profiles.removeObservers(this);
 444         Data.lastUpdateDate.removeObservers(this);
 445         Intent intent = new Intent(this, this.getClass());
 446         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 447         startActivity(intent);
 448     }
 449     private void storeThemeIdInPrefs(int themeId) {
 450         // store the new theme id in the preferences
 451         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 452         SharedPreferences.Editor e = prefs.edit();
 453         e.putInt(PREF_THEME_ID, themeId);
 454         e.apply();
 455     }
 456     public void startEditProfileActivity(MobileLedgerProfile profile) {
 457         Intent intent = new Intent(this, ProfileDetailActivity.class);
 458         Bundle args = new Bundle();
 459         if (profile != null) {
 460             int index = Data.getProfileIndex(profile);
 461             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 462         }
 463         intent.putExtras(args);
 464         startActivity(intent, args);
 465     }
 466     private void setupProfile() {
 467         MLDB.getOption(MLDB.OPT_PROFILE_UUID, null, new GetOptCallback(){
 468             @Override
 469             protected void onResult(String profileUUID) {
 470                 MobileLedgerProfile startupProfile;
 471
 472                 startupProfile = Data.getProfile(profileUUID);
 473                 Data.setCurrentProfile(startupProfile);
 474             }
 475         });
 476     }
 477     public void fabNewTransactionClicked(View view) {
 478         Intent intent = new Intent(this, NewTransactionActivity.class);
 479         startActivity(intent);
 480         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 481     }
 482     public void navSettingsClicked(View view) {
 483         Intent intent = new Intent(this, SettingsActivity.class);
 484         startActivity(intent);
 485         drawer.closeDrawers();
 486     }
 487     public void markDrawerItemCurrent(int id) {
 488         TextView item = drawer.findViewById(id);
 489         item.setBackgroundColor(Colors.tableRowDarkBG);
 490
 491         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 492         for (int i = 0; i < actions.getChildCount(); i++) {
 493             View view = actions.getChildAt(i);
 494             if (view.getId() != id) {
 495                 view.setBackgroundColor(Color.TRANSPARENT);
 496             }
 497         }
 498     }
 499     public void onAccountSummaryClicked(View view) {
 500         drawer.closeDrawers();
 501
 502         showAccountSummaryFragment();
 503     }
 504     private void showAccountSummaryFragment() {
 505         mViewPager.setCurrentItem(0, true);
 506         Data.accountFilter.setValue(null);
 507     }
 508     public void onLatestTransactionsClicked(View view) {
 509         drawer.closeDrawers();
 510
 511         showTransactionsFragment((String) null);
 512     }
 513     private void showTransactionsFragment(String accName) {
 514         Data.accountFilter.setValue(accName);
 515         mViewPager.setCurrentItem(1, true);
 516     }
 517     private void showTransactionsFragment(LedgerAccount account) {
 518         showTransactionsFragment((account == null) ? null : account.getName());
 519     }
 520     public void showAccountTransactions(LedgerAccount account) {
 521         mBackMeansToAccountList = true;
 522         showTransactionsFragment(account);
 523     }
 524     @Override
 525     public void onBackPressed() {
 526         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 527         if (drawer.isDrawerOpen(GravityCompat.START)) {
 528             drawer.closeDrawer(GravityCompat.START);
 529         }
 530         else {
 531             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 532                 Data.accountFilter.setValue(null);
 533                 showAccountSummaryFragment();
 534                 mBackMeansToAccountList = false;
 535             }
 536             else {
 537                 debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 538                         fragmentManager.getBackStackEntryCount()));
 539
 540                 super.onBackPressed();
 541             }
 542         }
 543     }
 544     public void updateLastUpdateTextFromDB() {
 545         long last_update = (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 546
 547         debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", last_update));
 548         if (last_update == 0) {
 549             Data.lastUpdateDate.postValue(null);
 550         }
 551         else {
 552             Data.lastUpdateDate.postValue(new Date(last_update));
 553         }
 554     }
 555     public void onStopTransactionRefreshClick(View view) {
 556         debug("interactive", "Cancelling transactions refresh");
 557         Data.stopTransactionsRetrieval();
 558         bTransactionListCancelDownload.setEnabled(false);
 559     }
 560     public void onRetrieveDone(String error) {
 561         Data.transactionRetrievalDone();
 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         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 601     }
 602     public void fabHide() {
 603         fab.hide();
 604     }
 605     public void navProfilesHeadClicked(View view) {
 606         if (profileListExpanded) {
 607             collapseProfileList();
 608         }
 609         else {
 610             expandProfileList();
 611         }
 612     }
 613     private void expandProfileList() {
 614         profileListExpanded = true;
 615
 616
 617         profileListContainer.setVisibility(View.VISIBLE);
 618         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 619         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 620         profileListHeadMore.setVisibility(View.VISIBLE);
 621         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 622         final ArrayList<MobileLedgerProfile> profiles = Data.profiles.getValue();
 623         findViewById(R.id.nav_profile_list).setMinimumHeight(
 624                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 625                        (profiles != null ? profiles.size() : 0)));
 626     }
 627     private void collapseProfileList() {
 628         boolean wasExpanded = profileListExpanded;
 629         profileListExpanded = false;
 630
 631         if (wasExpanded) {
 632             final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 633             animation.setAnimationListener(new Animation.AnimationListener() {
 634                 @Override
 635                 public void onAnimationStart(Animation animation) {
 636
 637                 }
 638                 @Override
 639                 public void onAnimationEnd(Animation animation) {
 640                     profileListContainer.setVisibility(View.GONE);
 641                 }
 642                 @Override
 643                 public void onAnimationRepeat(Animation animation) {
 644
 645                 }
 646             });
 647             mProfileListAdapter.stopEditingProfiles();
 648
 649             profileListContainer.startAnimation(animation);
 650             profileListHeadArrow.setRotation(0f);
 651             profileListHeadArrow
 652                     .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 653             final Animation moreAnimation = AnimationUtils.loadAnimation(this, R.anim.fade_out);
 654             moreAnimation.setAnimationListener(new Animation.AnimationListener() {
 655                 @Override
 656                 public void onAnimationStart(Animation animation) {
 657                 }
 658                 @Override
 659                 public void onAnimationEnd(Animation animation) {
 660                     profileListHeadMore.setVisibility(View.GONE);
 661                 }
 662                 @Override
 663                 public void onAnimationRepeat(Animation animation) {
 664                 }
 665             });
 666             profileListHeadMore.startAnimation(moreAnimation);
 667         }
 668         else {
 669             profileListContainer.setVisibility(View.GONE);
 670             profileListHeadArrow.setRotation(0f);
 671             profileListHeadMore.setVisibility(View.GONE);
 672         }
 673     }
 674     public void onAccountSummaryRowViewClicked(View view) {
 675         ViewGroup row;
 676         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 677         else row = (ViewGroup) view.getParent();
 678
 679         LedgerAccount acc = (LedgerAccount) row.getTag();
 680         switch (view.getId()) {
 681             case R.id.account_row_acc_name:
 682             case R.id.account_expander:
 683             case R.id.account_expander_container:
 684                 debug("accounts", "Account expander clicked");
 685                 if (!acc.hasSubAccounts()) return;
 686
 687                 boolean wasExpanded = acc.isExpanded();
 688
 689                 View arrow = row.findViewById(R.id.account_expander_container);
 690
 691                 arrow.clearAnimation();
 692                 ViewPropertyAnimator animator = arrow.animate();
 693
 694                 acc.toggleExpanded();
 695                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 696                         new Object[]{acc.isExpanded(), acc.getName(), profile.getUuid()
 697                         });
 698
 699                 if (wasExpanded) {
 700                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 701                     arrow.setRotation(0);
 702                     animator.rotationBy(180);
 703
 704                     // removing all child accounts from the view
 705                     int start = -1, count = 0;
 706                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 707                         for (int i = 0; i < Data.accounts.size(); i++) {
 708                             if (acc.isParentOf(Data.accounts.get(i))) {
 709 //                                debug("accounts", String.format("Found a child '%s' at position %d",
 710 //                                        Data.accounts.get(i).getName(), i));
 711                                 if (start == -1) {
 712                                     start = i;
 713                                 }
 714                                 count++;
 715                             }
 716                             else {
 717                                 if (start != -1) {
 718 //                                    debug("accounts",
 719 //                                            String.format("Found a non-child '%s' at position %d",
 720 //                                                    Data.accounts.get(i).getName(), i));
 721                                     break;
 722                                 }
 723                             }
 724                         }
 725
 726                         if (start != -1) {
 727                             for (int j = 0; j < count; j++) {
 728 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 729 //                                        Data.accounts.get(start).getName()));
 730                                 Data.accounts.removeQuietly(start);
 731                             }
 732
 733                             mAccountSummaryFragment.modelAdapter
 734                                     .notifyItemRangeRemoved(start, count);
 735                         }
 736                     }
 737                 }
 738                 else {
 739                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 740                     arrow.setRotation(180);
 741                     animator.rotationBy(-180);
 742                     List<LedgerAccount> children = profile.loadVisibleChildAccountsOf(acc);
 743                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 744                         int parentPos = Data.accounts.indexOf(acc);
 745                         if (parentPos != -1) {
 746                             // may have disappeared in a concurrent refresh operation
 747                             Data.accounts.addAllQuietly(parentPos + 1, children);
 748                             mAccountSummaryFragment.modelAdapter
 749                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 750                         }
 751                     }
 752                 }
 753                 break;
 754             case R.id.account_row_acc_amounts:
 755                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 756                     acc.toggleAmountsExpanded();
 757                     DbOpQueue
 758                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 759                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 760                                                  profile.getUuid()
 761                                     });
 762                     Data.accounts.triggerItemChangedNotification(acc);
 763                 }
 764                 break;
 765         }
 766     }
 767
 768     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 769
 770         SectionsPagerAdapter(FragmentManager fm) {
 771             super(fm);
 772         }
 773
 774         @NotNull
 775         @Override
 776         public Fragment getItem(int position) {
 777             debug("main", String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 778             switch (position) {
 779                 case 0:
 780 //                    debug("flow", "Creating account summary fragment");
 781                     return mAccountSummaryFragment = new AccountSummaryFragment();
 782                 case 1:
 783                     return new TransactionListFragment();
 784                 default:
 785                     throw new IllegalStateException(
 786                             String.format("Unexpected fragment index: " + "%d", position));
 787             }
 788         }
 789
 790         @Override
 791         public int getCount() {
 792             return 2;
 793         }
 794     }
 795 }