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

   1 /*
   2  * Copyright © 2020 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.Build;
  29 import android.os.Bundle;
  30 import android.util.Log;
  31 import android.view.View;
  32 import android.view.animation.AnimationUtils;
  33 import android.widget.LinearLayout;
  34 import android.widget.ProgressBar;
  35 import android.widget.TextView;
  36
  37 import androidx.annotation.NonNull;
  38 import androidx.appcompat.app.ActionBarDrawerToggle;
  39 import androidx.appcompat.widget.Toolbar;
  40 import androidx.core.view.GravityCompat;
  41 import androidx.drawerlayout.widget.DrawerLayout;
  42 import androidx.fragment.app.Fragment;
  43 import androidx.fragment.app.FragmentManager;
  44 import androidx.fragment.app.FragmentPagerAdapter;
  45 import androidx.lifecycle.ViewModelProvider;
  46 import androidx.recyclerview.widget.LinearLayoutManager;
  47 import androidx.recyclerview.widget.RecyclerView;
  48 import androidx.viewpager.widget.ViewPager;
  49
  50 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  51 import com.google.android.material.snackbar.Snackbar;
  52
  53 import net.ktnx.mobileledger.R;
  54 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  55 import net.ktnx.mobileledger.model.Data;
  56 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  57 import net.ktnx.mobileledger.ui.MainModel;
  58 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  59 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  60 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  61 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  62 import net.ktnx.mobileledger.utils.Colors;
  63 import net.ktnx.mobileledger.utils.Logger;
  64 import net.ktnx.mobileledger.utils.MLDB;
  65
  66 import org.jetbrains.annotations.NotNull;
  67
  68 import java.text.DateFormat;
  69 import java.util.ArrayList;
  70 import java.util.Date;
  71 import java.util.List;
  72 import java.util.Locale;
  73
  74 /*
  75  * TODO: reports
  76  *  */
  77
  78 public class MainActivity extends ProfileThemedActivity {
  79     public static final String STATE_CURRENT_PAGE = "current_page";
  80     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  81     public static final String STATE_ACC_FILTER = "account_filter";
  82     private static final String PREF_THEME_ID = "themeId";
  83     DrawerLayout drawer;
  84     private View profileListHeadMore, profileListHeadCancel, profileListHeadAddProfile;
  85     private View bTransactionListCancelDownload;
  86     private SectionsPagerAdapter mSectionsPagerAdapter;
  87     private ViewPager mViewPager;
  88     private FloatingActionButton fab;
  89     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  90     private int mCurrentPage;
  91     private boolean mBackMeansToAccountList = false;
  92     private Toolbar mToolbar;
  93     private DrawerLayout.SimpleDrawerListener drawerListener;
  94     private ActionBarDrawerToggle barDrawerToggle;
  95     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
  96     private MobileLedgerProfile profile;
  97     private MainModel mainModel;
  98     @Override
  99     protected void onStart() {
 100         super.onStart();
 101
 102         Logger.debug("MainActivity", "onStart()");
 103
 104         mViewPager.setCurrentItem(mCurrentPage, false);
 105     }
 106     @Override
 107     protected void onSaveInstanceState(@NotNull Bundle outState) {
 108         super.onSaveInstanceState(outState);
 109         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 110         if (mainModel.getAccountFilter()
 111                      .getValue() != null)
 112             outState.putString(STATE_ACC_FILTER, mainModel.getAccountFilter()
 113                                                           .getValue());
 114     }
 115     @Override
 116     protected void onDestroy() {
 117         mSectionsPagerAdapter = null;
 118         RecyclerView root = findViewById(R.id.nav_profile_list);
 119         if (root != null)
 120             root.setAdapter(null);
 121         if (drawer != null)
 122             drawer.removeDrawerListener(drawerListener);
 123         drawerListener = null;
 124         if (drawer != null)
 125             drawer.removeDrawerListener(barDrawerToggle);
 126         barDrawerToggle = null;
 127         if (mViewPager != null)
 128             mViewPager.removeOnPageChangeListener(pageChangeListener);
 129         pageChangeListener = null;
 130         super.onDestroy();
 131     }
 132     @Override
 133     protected void setupProfileColors() {
 134         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 135         int profileColor = prefs.getInt(PREF_THEME_ID, -2);
 136         if (profileColor == -2)
 137             profileColor = Data.retrieveCurrentThemeIdFromDb();
 138         Colors.setupTheme(this, profileColor);
 139         Colors.profileThemeId = profileColor;
 140         storeThemeIdInPrefs(profileColor);
 141     }
 142     @Override
 143     protected void onResume() {
 144         super.onResume();
 145         fabShouldShow();
 146     }
 147     @Override
 148     protected void onCreate(Bundle savedInstanceState) {
 149         Logger.debug("MainActivity", "onCreate()/entry");
 150         super.onCreate(savedInstanceState);
 151         Logger.debug("MainActivity", "onCreate()/after super");
 152         setContentView(R.layout.activity_main);
 153
 154         mainModel = new ViewModelProvider(this).get(MainModel.class);
 155
 156         fab = findViewById(R.id.btn_add_transaction);
 157         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 158         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 159         LinearLayout profileListHeadMoreAndCancel =
 160                 findViewById(R.id.nav_profile_list_head_buttons);
 161         profileListHeadAddProfile = findViewById(R.id.nav_new_profile_button);
 162         drawer = findViewById(R.id.drawer_layout);
 163         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 164         mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
 165         mViewPager = findViewById(R.id.root_frame);
 166
 167         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 168         if (extra != null && savedInstanceState == null)
 169             savedInstanceState = extra;
 170
 171
 172         mToolbar = findViewById(R.id.toolbar);
 173         setSupportActionBar(mToolbar);
 174
 175         Data.observeProfile(this, this::onProfileChanged);
 176
 177         Data.profiles.observe(this, this::onProfileListChanged);
 178         Data.backgroundTaskProgress.observe(this, this::onRetrieveProgress);
 179         Data.backgroundTasksRunning.observe(this, this::onRetrieveRunningChanged);
 180
 181         if (barDrawerToggle == null) {
 182             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 183                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 184             drawer.addDrawerListener(barDrawerToggle);
 185         }
 186         barDrawerToggle.syncState();
 187
 188         try {
 189             PackageInfo pi = getApplicationContext().getPackageManager()
 190                                                     .getPackageInfo(getPackageName(), 0);
 191             ((TextView) findViewById(R.id.nav_upper).findViewById(
 192                     R.id.drawer_version_text)).setText(pi.versionName);
 193             ((TextView) findViewById(R.id.no_profiles_layout).findViewById(
 194                     R.id.drawer_version_text)).setText(pi.versionName);
 195         }
 196         catch (Exception e) {
 197             e.printStackTrace();
 198         }
 199
 200         markDrawerItemCurrent(R.id.nav_account_summary);
 201
 202         mViewPager.setAdapter(mSectionsPagerAdapter);
 203
 204         if (pageChangeListener == null) {
 205             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 206                 @Override
 207                 public void onPageSelected(int position) {
 208                     mCurrentPage = position;
 209                     switch (position) {
 210                         case 0:
 211                             markDrawerItemCurrent(R.id.nav_account_summary);
 212                             break;
 213                         case 1:
 214                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 215                             break;
 216                         default:
 217                             Log.e("MainActivity",
 218                                     String.format("Unexpected page index %d", position));
 219                     }
 220
 221                     super.onPageSelected(position);
 222                 }
 223             };
 224             mViewPager.addOnPageChangeListener(pageChangeListener);
 225         }
 226
 227         mCurrentPage = 0;
 228         if (savedInstanceState != null) {
 229             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 230             if (currentPage != -1) {
 231                 mCurrentPage = currentPage;
 232             }
 233             mainModel.getAccountFilter()
 234                      .setValue(savedInstanceState.getString(STATE_ACC_FILTER, null));
 235         }
 236
 237         mainModel.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
 238
 239         findViewById(R.id.btn_no_profiles_add).setOnClickListener(
 240                 v -> startEditProfileActivity(null));
 241
 242         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 243
 244         findViewById(R.id.nav_new_profile_button).setOnClickListener(
 245                 v -> startEditProfileActivity(null));
 246
 247         RecyclerView root = findViewById(R.id.nav_profile_list);
 248         if (root == null)
 249             throw new RuntimeException("Can't get hold on the transaction value view");
 250
 251         if (mProfileListAdapter == null)
 252             mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 253         root.setAdapter(mProfileListAdapter);
 254
 255         mProfileListAdapter.editingProfiles.observe(this, newValue -> {
 256             if (newValue) {
 257                 profileListHeadMore.setVisibility(View.GONE);
 258                 profileListHeadCancel.setVisibility(View.VISIBLE);
 259                 profileListHeadAddProfile.setVisibility(View.VISIBLE);
 260                 if (drawer.isDrawerOpen(GravityCompat.START)) {
 261                     profileListHeadMore.startAnimation(
 262                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 263                     profileListHeadCancel.startAnimation(
 264                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 265                     profileListHeadAddProfile.startAnimation(
 266                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 267                 }
 268             }
 269             else {
 270                 profileListHeadCancel.setVisibility(View.GONE);
 271                 profileListHeadMore.setVisibility(View.VISIBLE);
 272                 profileListHeadAddProfile.setVisibility(View.GONE);
 273                 if (drawer.isDrawerOpen(GravityCompat.START)) {
 274                     profileListHeadCancel.startAnimation(
 275                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 276                     profileListHeadMore.startAnimation(
 277                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
 278                     profileListHeadAddProfile.startAnimation(
 279                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
 280                 }
 281             }
 282
 283             mProfileListAdapter.notifyDataSetChanged();
 284         });
 285
 286         LinearLayoutManager llm = new LinearLayoutManager(this);
 287
 288         llm.setOrientation(RecyclerView.VERTICAL);
 289         root.setLayoutManager(llm);
 290
 291         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 292         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 293         profileListHeadMoreAndCancel.setOnClickListener(
 294                 (v) -> mProfileListAdapter.flipEditingProfiles());
 295         if (drawerListener == null) {
 296             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 297                 @Override
 298                 public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
 299                     if (slideOffset > 0.2)
 300                         fabHide();
 301                 }
 302                 @Override
 303                 public void onDrawerClosed(View drawerView) {
 304                     super.onDrawerClosed(drawerView);
 305                     mProfileListAdapter.setAnimationsEnabled(false);
 306                     mProfileListAdapter.editingProfiles.setValue(false);
 307                     Data.drawerOpen.setValue(false);
 308                     fabShouldShow();
 309                 }
 310                 @Override
 311                 public void onDrawerOpened(View drawerView) {
 312                     super.onDrawerOpened(drawerView);
 313                     mProfileListAdapter.setAnimationsEnabled(true);
 314                     Data.drawerOpen.setValue(true);
 315                     fabHide();
 316                 }
 317             };
 318             drawer.addDrawerListener(drawerListener);
 319         }
 320
 321         Data.drawerOpen.observe(this, open -> {
 322             if (open)
 323                 drawer.open();
 324             else
 325                 drawer.close();
 326         });
 327
 328         mainModel.getUpdateError()
 329                  .observe(this, (error) -> {
 330                      if (error == null)
 331                          return;
 332
 333                      Snackbar.make(mViewPager, error, Snackbar.LENGTH_LONG)
 334                              .show();
 335                      mainModel.clearUpdateError();
 336                  });
 337     }
 338     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 339         long now = new Date().getTime();
 340         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 341             if (lastUpdate == null)
 342                 Logger.debug("db::", "WEB data never fetched. scheduling a fetch");
 343             else
 344                 Logger.debug("db", String.format(Locale.ENGLISH,
 345                         "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 346                         lastUpdate.getTime() / 1000f, now / 1000f));
 347
 348             mainModel.scheduleTransactionListRetrieval();
 349         }
 350     }
 351     private void createShortcuts(List<MobileLedgerProfile> list) {
 352         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1)
 353             return;
 354
 355         ShortcutManager sm = getSystemService(ShortcutManager.class);
 356         List<ShortcutInfo> shortcuts = new ArrayList<>();
 357         int i = 0;
 358         for (MobileLedgerProfile p : list) {
 359             if (shortcuts.size() >= sm.getMaxShortcutCountPerActivity())
 360                 break;
 361
 362             if (!p.isPostingPermitted())
 363                 continue;
 364
 365             final ShortcutInfo.Builder builder =
 366                     new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid());
 367             ShortcutInfo si = builder.setShortLabel(p.getName())
 368                                      .setIcon(Icon.createWithResource(this,
 369                                              R.drawable.thick_plus_icon))
 370                                      .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 371                                              NewTransactionActivity.class).putExtra("profile_uuid",
 372                                              p.getUuid()))
 373                                      .setRank(i)
 374                                      .build();
 375             shortcuts.add(si);
 376             i++;
 377         }
 378         sm.setDynamicShortcuts(shortcuts);
 379     }
 380     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
 381         if ((newList == null) || newList.isEmpty()) {
 382             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 383             findViewById(R.id.main_app_layout).setVisibility(View.GONE);
 384             return;
 385         }
 386
 387         findViewById(R.id.main_app_layout).setVisibility(View.VISIBLE);
 388         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 389
 390         findViewById(R.id.nav_profile_list).setMinimumHeight(
 391                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
 392
 393         Logger.debug("profiles", "profile list changed");
 394         mProfileListAdapter.notifyDataSetChanged();
 395
 396         createShortcuts(newList);
 397     }
 398     /**
 399      * called when the current profile has changed
 400      */
 401     private void onProfileChanged(MobileLedgerProfile profile) {
 402         if (this.profile == null) {
 403             if (profile == null)
 404                 return;
 405         }
 406         else {
 407             if (this.profile.equals(profile))
 408                 return;
 409         }
 410
 411         boolean haveProfile = profile != null;
 412
 413         if (haveProfile)
 414             setTitle(profile.getName());
 415         else
 416             setTitle(R.string.app_name);
 417
 418         mainModel.setProfile(profile);
 419
 420         this.profile = profile;
 421
 422         int newProfileTheme = haveProfile ? profile.getThemeHue() : -1;
 423         if (newProfileTheme != Colors.profileThemeId) {
 424             Logger.debug("profiles",
 425                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
 426                             newProfileTheme));
 427             Colors.profileThemeId = newProfileTheme;
 428             profileThemeChanged();
 429             // profileThemeChanged would restart the activity, so no need to reload the
 430             // data sets below
 431             return;
 432         }
 433
 434         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 435         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 436
 437         mProfileListAdapter.notifyDataSetChanged();
 438
 439         mainModel.clearTransactions();
 440
 441         if (haveProfile) {
 442             mainModel.scheduleAccountListReload();
 443             Logger.debug("transactions", "requesting list reload");
 444             mainModel.scheduleTransactionListReload();
 445
 446             if (profile.isPostingPermitted()) {
 447                 mToolbar.setSubtitle(null);
 448                 fab.show();
 449             }
 450             else {
 451                 mToolbar.setSubtitle(R.string.profile_subtitle_read_only);
 452                 fab.hide();
 453             }
 454         }
 455         else {
 456             mToolbar.setSubtitle(null);
 457             fab.hide();
 458         }
 459
 460         updateLastUpdateTextFromDB();
 461     }
 462     private void updateLastUpdateDisplay(Date newValue) {
 463         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 464         TextView v = findViewById(R.id.transactions_last_update);
 465         if (newValue == null) {
 466             l.setVisibility(View.INVISIBLE);
 467             Logger.debug("main", "no last update date :(");
 468         }
 469         else {
 470             final String text = DateFormat.getDateTimeInstance()
 471                                           .format(newValue);
 472             v.setText(text);
 473             l.setVisibility(View.VISIBLE);
 474             Logger.debug("main", String.format("Date formatted: %s", text));
 475         }
 476
 477         scheduleDataRetrievalIfStale(newValue);
 478     }
 479     private void profileThemeChanged() {
 480         storeThemeIdInPrefs(profile.getThemeHue());
 481
 482         // un-hook all observed LiveData
 483         Data.removeProfileObservers(this);
 484         Data.profiles.removeObservers(this);
 485         mainModel.lastUpdateDate.removeObservers(this);
 486
 487         recreate();
 488     }
 489     private void storeThemeIdInPrefs(int themeId) {
 490         // store the new theme id in the preferences
 491         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
 492         SharedPreferences.Editor e = prefs.edit();
 493         e.putInt(PREF_THEME_ID, themeId);
 494         e.apply();
 495     }
 496     public void startEditProfileActivity(MobileLedgerProfile profile) {
 497         Intent intent = new Intent(this, ProfileDetailActivity.class);
 498         Bundle args = new Bundle();
 499         if (profile != null) {
 500             int index = Data.getProfileIndex(profile);
 501             if (index != -1)
 502                 intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 503         }
 504         intent.putExtras(args);
 505         startActivity(intent, args);
 506     }
 507     public void fabNewTransactionClicked(View view) {
 508         Intent intent = new Intent(this, NewTransactionActivity.class);
 509         startActivity(intent);
 510         overridePendingTransition(R.anim.slide_in_up, R.anim.dummy);
 511     }
 512     public void markDrawerItemCurrent(int id) {
 513         TextView item = drawer.findViewById(id);
 514         item.setBackgroundColor(Colors.tableRowDarkBG);
 515
 516         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 517         for (int i = 0; i < actions.getChildCount(); i++) {
 518             View view = actions.getChildAt(i);
 519             if (view.getId() != id) {
 520                 view.setBackgroundColor(Color.TRANSPARENT);
 521             }
 522         }
 523     }
 524     public void onAccountSummaryClicked(View view) {
 525         drawer.closeDrawers();
 526
 527         showAccountSummaryFragment();
 528     }
 529     private void showAccountSummaryFragment() {
 530         mViewPager.setCurrentItem(0, true);
 531         mainModel.getAccountFilter()
 532                  .setValue(null);
 533     }
 534     public void onLatestTransactionsClicked(View view) {
 535         drawer.closeDrawers();
 536
 537         showTransactionsFragment(null);
 538     }
 539     public void showTransactionsFragment(String accName) {
 540         mainModel.getAccountFilter()
 541                  .setValue(accName);
 542         mViewPager.setCurrentItem(1, true);
 543     }
 544     public void showAccountTransactions(String accountName) {
 545         mBackMeansToAccountList = true;
 546         showTransactionsFragment(accountName);
 547     }
 548     @Override
 549     public void onBackPressed() {
 550         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 551         if (drawer.isDrawerOpen(GravityCompat.START)) {
 552             drawer.closeDrawer(GravityCompat.START);
 553         }
 554         else {
 555             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 556                 mainModel.getAccountFilter()
 557                          .setValue(null);
 558                 showAccountSummaryFragment();
 559                 mBackMeansToAccountList = false;
 560             }
 561             else {
 562                 Logger.debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
 563                         getSupportFragmentManager().getBackStackEntryCount()));
 564
 565                 super.onBackPressed();
 566             }
 567         }
 568     }
 569     public void updateLastUpdateTextFromDB() {
 570         if (profile == null)
 571             return;
 572
 573         long last_update = profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L);
 574
 575         Logger.debug("transactions",
 576                 String.format(Locale.ENGLISH, "Last update = %d", last_update));
 577         if (last_update == 0) {
 578             mainModel.lastUpdateDate.postValue(null);
 579         }
 580         else {
 581             mainModel.lastUpdateDate.postValue(new Date(last_update));
 582         }
 583     }
 584     public void onStopTransactionRefreshClick(View view) {
 585         Logger.debug("interactive", "Cancelling transactions refresh");
 586         mainModel.stopTransactionsRetrieval();
 587         bTransactionListCancelDownload.setEnabled(false);
 588     }
 589     public void onRetrieveRunningChanged(Boolean running) {
 590         final View progressLayout = findViewById(R.id.transaction_progress_layout);
 591         if (running) {
 592             ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
 593             bTransactionListCancelDownload.setEnabled(true);
 594             ColorStateList csl = Colors.getColorStateList();
 595             progressBar.setIndeterminateTintList(csl);
 596             progressBar.setProgressTintList(csl);
 597             progressBar.setIndeterminate(true);
 598             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 599                 progressBar.setProgress(0, false);
 600             }
 601             else {
 602                 progressBar.setProgress(0);
 603             }
 604             progressLayout.setVisibility(View.VISIBLE);
 605         }
 606         else {
 607             progressLayout.setVisibility(View.GONE);
 608         }
 609     }
 610     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 611         ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
 612
 613         if (progress.getState() == RetrieveTransactionsTask.ProgressState.FINISHED) {
 614             Logger.debug("progress", "Done");
 615             findViewById(R.id.transaction_progress_layout).setVisibility(View.GONE);
 616
 617             mainModel.transactionRetrievalDone();
 618
 619             if (progress.getError() != null) {
 620                 Snackbar.make(mViewPager, progress.getError(), Snackbar.LENGTH_LONG)
 621                         .show();
 622                 return;
 623             }
 624
 625             return;
 626         }
 627
 628
 629         bTransactionListCancelDownload.setEnabled(true);
 630 //        ColorStateList csl = Colors.getColorStateList();
 631 //        progressBar.setIndeterminateTintList(csl);
 632 //        progressBar.setProgressTintList(csl);
 633 //        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 634 //            progressBar.setProgress(0, false);
 635 //        else
 636 //            progressBar.setProgress(0);
 637         findViewById(R.id.transaction_progress_layout).setVisibility(View.VISIBLE);
 638
 639         if (progress.isIndeterminate() || (progress.getTotal() <= 0)) {
 640             progressBar.setIndeterminate(true);
 641             Logger.debug("progress", "indeterminate");
 642         }
 643         else {
 644             if (progressBar.isIndeterminate()) {
 645                 progressBar.setIndeterminate(false);
 646             }
 647 //            Logger.debug("progress",
 648 //                    String.format(Locale.US, "%d/%d", progress.getProgress(), progress.getTotal
 649 //                    ()));
 650             progressBar.setMax(progress.getTotal());
 651             // for some reason animation doesn't work - no progress is shown (stick at 0)
 652             // on lineageOS 14.1 (Nougat, 7.1.2)
 653             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
 654                 progressBar.setProgress(progress.getProgress(), false);
 655             else
 656                 progressBar.setProgress(progress.getProgress());
 657         }
 658     }
 659     public void fabShouldShow() {
 660         if ((profile != null) && profile.isPostingPermitted() && !drawer.isOpen())
 661             fab.show();
 662         else
 663             fabHide();
 664     }
 665     public void fabHide() {
 666         fab.hide();
 667     }
 668
 669     public static class SectionsPagerAdapter extends FragmentPagerAdapter {
 670
 671         SectionsPagerAdapter(FragmentManager fm) {
 672             super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
 673         }
 674
 675         @NotNull
 676         @Override
 677         public Fragment getItem(int position) {
 678             Logger.debug("main",
 679                     String.format(Locale.ENGLISH, "Switching to fragment %d", position));
 680             switch (position) {
 681                 case 0:
 682 //                    debug("flow", "Creating account summary fragment");
 683                     return new AccountSummaryFragment();
 684                 case 1:
 685                     return new TransactionListFragment();
 686                 default:
 687                     throw new IllegalStateException(
 688                             String.format("Unexpected fragment index: " + "%d", position));
 689             }
 690         }
 691
 692         @Override
 693         public int getCount() {
 694             return 2;
 695         }
 696     }
 697 }