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

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Intent;
  21 import android.content.pm.PackageInfo;
  22 import android.content.pm.ShortcutInfo;
  23 import android.content.pm.ShortcutManager;
  24 import android.content.res.ColorStateList;
  25 import android.graphics.Color;
  26 import android.graphics.drawable.Icon;
  27 import android.os.AsyncTask;
  28 import android.os.Build;
  29 import android.os.Bundle;
  30 import android.util.Log;
  31 import android.view.View;
  32 import android.view.ViewGroup;
  33 import android.view.ViewPropertyAnimator;
  34 import android.view.animation.Animation;
  35 import android.view.animation.AnimationUtils;
  36 import android.widget.LinearLayout;
  37 import android.widget.ProgressBar;
  38 import android.widget.TextView;
  39 import android.widget.Toast;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42
  43 import net.ktnx.mobileledger.R;
  44 import net.ktnx.mobileledger.async.DbOpQueue;
  45 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  46 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  47 import net.ktnx.mobileledger.model.Data;
  48 import net.ktnx.mobileledger.model.LedgerAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
  51 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  52 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
  53 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  54 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  55 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  56 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  57 import net.ktnx.mobileledger.utils.Colors;
  58 import net.ktnx.mobileledger.utils.LockHolder;
  59 import net.ktnx.mobileledger.utils.MLDB;
  60
  61 import org.jetbrains.annotations.NotNull;
  62
  63 import java.lang.ref.WeakReference;
  64 import java.text.DateFormat;
  65 import java.util.ArrayList;
  66 import java.util.Date;
  67 import java.util.List;
  68 import java.util.Observer;
  69
  70 import androidx.appcompat.app.ActionBarDrawerToggle;
  71 import androidx.appcompat.widget.Toolbar;
  72 import androidx.core.view.GravityCompat;
  73 import androidx.drawerlayout.widget.DrawerLayout;
  74 import androidx.fragment.app.Fragment;
  75 import androidx.fragment.app.FragmentManager;
  76 import androidx.fragment.app.FragmentPagerAdapter;
  77 import androidx.recyclerview.widget.LinearLayoutManager;
  78 import androidx.recyclerview.widget.RecyclerView;
  79 import androidx.viewpager.widget.ViewPager;
  80
  81 import static net.ktnx.mobileledger.utils.Logger.debug;
  82
  83 public class MainActivity extends ProfileThemedActivity {
  84     public static final String STATE_CURRENT_PAGE = "current_page";
  85     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  86     public static final String STATE_ACC_FILTER = "account_filter";
  87     public AccountSummaryFragment mAccountSummaryFragment;
  88     DrawerLayout drawer;
  89     private LinearLayout profileListContainer;
  90     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  91     private FragmentManager fragmentManager;
  92     private RetrieveTransactionsTask retrieveTransactionsTask;
  93     private View bTransactionListCancelDownload;
  94     private ProgressBar progressBar;
  95     private LinearLayout progressLayout;
  96     private SectionsPagerAdapter mSectionsPagerAdapter;
  97     private ViewPager mViewPager;
  98     private FloatingActionButton fab;
  99     private boolean profileListExpanded = false;
 100     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 101     private int mCurrentPage;
 102     private String mAccountFilter;
 103     private boolean mBackMeansToAccountList = false;
 104     private Observer profileObserver;
 105     private Observer profilesObserver;
 106     private Toolbar mToolbar;
 107     private DrawerLayout.SimpleDrawerListener drawerListener;
 108     private ActionBarDrawerToggle barDrawerToggle;
 109     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 110     private Observer editingProfilesObserver;
 111     @Override
 112     protected void onStart() {
 113         super.onStart();
 114
 115         debug("flow", "MainActivity.onStart()");
 116         mViewPager.setCurrentItem(mCurrentPage, false);
 117         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 118         else Data.accountFilter.setValue(null);
 119
 120     }
 121     @Override
 122     protected void onSaveInstanceState(@NotNull Bundle outState) {
 123         super.onSaveInstanceState(outState);
 124         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 125         if (mAccountFilter != null) outState.putString(STATE_ACC_FILTER, mAccountFilter);
 126     }
 127     @Override
 128     protected void onDestroy() {
 129         mSectionsPagerAdapter = null;
 130         Data.profile.deleteObserver(profileObserver);
 131         profileObserver = null;
 132         Data.profiles.deleteObserver(profilesObserver);
 133         profilesObserver = null;
 134         RecyclerView root = findViewById(R.id.nav_profile_list);
 135         if (root != null) root.setAdapter(null);
 136         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 137         drawerListener = null;
 138         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 139         barDrawerToggle = null;
 140         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 141         pageChangeListener = null;
 142         if (mProfileListAdapter != null)
 143             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 144         editingProfilesObserver = null;
 145         super.onDestroy();
 146     }
 147     @Override
 148     protected void onCreate(Bundle savedInstanceState) {
 149         super.onCreate(savedInstanceState);
 150         debug("flow", "MainActivity.onCreate()");
 151         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 152         Colors.setupTheme(this, profileColor);
 153         Colors.profileThemeId = profileColor;
 154         setContentView(R.layout.activity_main);
 155
 156         fab = findViewById(R.id.btn_add_transaction);
 157         profileListContainer = findViewById(R.id.nav_profile_list_container);
 158         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 159         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 160         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 161         LinearLayout profileListHeadMoreAndCancel =
 162                 findViewById(R.id.nav_profile_list_head_buttons);
 163         drawer = findViewById(R.id.drawer_layout);
 164         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 165         progressBar = findViewById(R.id.transaction_list_progress_bar);
 166         progressLayout = findViewById(R.id.transaction_progress_layout);
 167         fragmentManager = getSupportFragmentManager();
 168         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 169         mViewPager = findViewById(R.id.root_frame);
 170
 171         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 172         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 173
 174
 175         mToolbar = findViewById(R.id.toolbar);
 176         setSupportActionBar(mToolbar);
 177
 178         if (profileObserver == null) {
 179             profileObserver = (o, arg) -> onProfileChanged(arg);
 180             Data.profile.addObserver(profileObserver);
 181         }
 182
 183         if (profilesObserver == null) {
 184             profilesObserver = (o, arg) -> onProfileListChanged(arg);
 185             Data.profiles.addObserver(profilesObserver);
 186         }
 187
 188         if (barDrawerToggle == null) {
 189             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 190                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 191             drawer.addDrawerListener(barDrawerToggle);
 192         }
 193         barDrawerToggle.syncState();
 194
 195         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 196
 197         try {
 198             PackageInfo pi =
 199                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 200             ver.setText(pi.versionName);
 201         }
 202         catch (Exception e) {
 203             e.printStackTrace();
 204         }
 205
 206         if (progressBar == null)
 207             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 208         if (progressLayout == null) throw new RuntimeException(
 209                 "Can't get hold on the transaction value progress bar layout");
 210
 211         markDrawerItemCurrent(R.id.nav_account_summary);
 212
 213         mViewPager.setAdapter(mSectionsPagerAdapter);
 214
 215         if (pageChangeListener == null) {
 216             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 217                 @Override
 218                 public void onPageSelected(int position) {
 219                     switch (position) {
 220                         case 0:
 221                             markDrawerItemCurrent(R.id.nav_account_summary);
 222                             break;
 223                         case 1:
 224                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 225                             break;
 226                         default:
 227                             Log.e("MainActivity",
 228                                     String.format("Unexpected page index %d", position));
 229                     }
 230
 231                     super.onPageSelected(position);
 232                 }
 233             };
 234             mViewPager.addOnPageChangeListener(pageChangeListener);
 235         }
 236
 237         mCurrentPage = 0;
 238         if (savedInstanceState != null) {
 239             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 240             if (currentPage != -1) {
 241                 mCurrentPage = currentPage;
 242             }
 243             mAccountFilter = savedInstanceState.getString(STATE_ACC_FILTER, null);
 244         }
 245         else mAccountFilter = null;
 246
 247         Data.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
 248
 249         findViewById(R.id.btn_no_profiles_add)
 250                 .setOnClickListener(v -> startEditProfileActivity(null));
 251
 252         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 253
 254         findViewById(R.id.nav_new_profile_button)
 255                 .setOnClickListener(v -> startEditProfileActivity(null));
 256
 257         RecyclerView root = findViewById(R.id.nav_profile_list);
 258         if (root == null)
 259             throw new RuntimeException("Can't get hold on the transaction value view");
 260
 261         if (mProfileListAdapter == null) mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 262         root.setAdapter(mProfileListAdapter);
 263
 264         if (editingProfilesObserver == null) {
 265             editingProfilesObserver = (o, arg) -> {
 266                 if (mProfileListAdapter.isEditingProfiles()) {
 267                     profileListHeadMore.setVisibility(View.GONE);
 268                     profileListHeadMore
 269                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 270                     profileListHeadCancel.setVisibility(View.VISIBLE);
 271                     profileListHeadCancel
 272                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 273                 }
 274                 else {
 275                     profileListHeadCancel.setVisibility(View.GONE);
 276                     profileListHeadCancel
 277                             .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_out));
 278                     profileListHeadMore.setVisibility(View.GONE);
 279                     if (profileListExpanded) {
 280                         profileListHeadMore.setVisibility(View.VISIBLE);
 281                         profileListHeadMore
 282                                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 283                     }
 284                     else profileListHeadMore.setVisibility(View.GONE);
 285                 }
 286             };
 287             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 288         }
 289
 290         LinearLayoutManager llm = new LinearLayoutManager(this);
 291
 292         llm.setOrientation(RecyclerView.VERTICAL);
 293         root.setLayoutManager(llm);
 294
 295         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 296         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 297         profileListHeadMoreAndCancel
 298                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 299
 300         if (drawerListener == null) {
 301             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 302                 @Override
 303                 public void onDrawerClosed(View drawerView) {
 304                     super.onDrawerClosed(drawerView);
 305                     collapseProfileList();
 306                 }
 307             };
 308             drawer.addDrawerListener(drawerListener);
 309         }
 310
 311         findViewById(R.id.nav_profile_list_head_layout)
 312                 .setOnClickListener(this::navProfilesHeadClicked);
 313         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 314         boolean initialStart = Data.profile.get() == null;
 315         setupProfile();
 316         if (!initialStart) onProfileChanged(null);
 317
 318         updateLastUpdateTextFromDB();
 319     }
 320     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 321         long now = new Date().getTime();
 322         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 323             if (lastUpdate == null) debug("db::", "WEB data never fetched. scheduling a fetch");
 324             else debug("db",
 325                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 326                             lastUpdate.getTime() / 1000f, now / 1000f));
 327
 328             scheduleTransactionListRetrieval();
 329         }
 330     }
 331     private void createShortcuts() {
 332         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;
 333
 334         List<ShortcutInfo> shortcuts = new ArrayList<>();
 335         try (LockHolder ignored = Data.profiles.lockForReading()) {
 336             for (int i = 0; i < Data.profiles.size(); i++) {
 337                 MobileLedgerProfile p = Data.profiles.get(i);
 338                 if (!p.isPostingPermitted()) continue;
 339
 340                 ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 341                         .setShortLabel(p.getName())
 342                         .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 343                         .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 344                                 NewTransactionActivity.class).putExtra("profile_uuid", p.getUuid()))
 345                         .setRank(i).build();
 346                 shortcuts.add(si);
 347             }
 348         }
 349         ShortcutManager sm = getSystemService(ShortcutManager.class);
 350         sm.setDynamicShortcuts(shortcuts);
 351     }
 352     private void onProfileListChanged(Object arg) {
 353         findViewById(R.id.nav_profile_list).setMinimumHeight(
 354                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 355                        Data.profiles.size()));
 356
 357         debug("profiles", "profile list changed");
 358         if (arg == null) mProfileListAdapter.notifyDataSetChanged();
 359         else mProfileListAdapter.notifyItemChanged((int) arg);
 360
 361         createShortcuts();
 362     }
 363     private void onProfileChanged(Object arg) {
 364         MobileLedgerProfile profile = Data.profile.get();
 365         MainActivity.this.runOnUiThread(() -> {
 366
 367             boolean haveProfile = profile != null;
 368             findViewById(R.id.no_profiles_layout)
 369                     .setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 370             findViewById(R.id.pager_layout)
 371                     .setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 372
 373             if (profile == null) MainActivity.this.setTitle(R.string.app_name);
 374             else MainActivity.this.setTitle(profile.getName());
 375             MainActivity.this.updateLastUpdateTextFromDB();
 376             int old_index = -1;
 377             int new_index = -1;
 378             if (arg != null) {
 379                 MobileLedgerProfile old = (MobileLedgerProfile) arg;
 380                 old_index = Data.getProfileIndex(old);
 381                 new_index = Data.getProfileIndex(profile);
 382             }
 383
 384             if ((old_index != -1) && (new_index != -1)) {
 385                 mProfileListAdapter.notifyItemChanged(old_index);
 386                 mProfileListAdapter.notifyItemChanged(new_index);
 387             }
 388             else mProfileListAdapter.notifyDataSetChanged();
 389
 390             MainActivity.this.collapseProfileList();
 391
 392             int newProfileTheme = (profile == null) ? -1 : profile.getThemeId();
 393             if (newProfileTheme != Colors.profileThemeId) {
 394                 debug("profiles", String.format("profile theme %d → %d", Colors.profileThemeId,
 395                         newProfileTheme));
 396                 MainActivity.this.profileThemeChanged();
 397                 Colors.profileThemeId = newProfileTheme;
 398                 // profileThemeChanged would restart the activity, so no need to reload the
 399                 // data sets below
 400                 return;
 401             }
 402             drawer.closeDrawers();
 403
 404             Data.transactions.clear();
 405             debug("transactions", "requesting list reload");
 406             TransactionListViewModel.scheduleTransactionListReload();
 407
 408             Data.accounts.clear();
 409             AccountSummaryViewModel.scheduleAccountListReload();
 410
 411             if (profile == null) {
 412                 mToolbar.setSubtitle(null);
 413                 fab.hide();
 414             }
 415             else {
 416                 if (profile.isPostingPermitted()) {
 417                     mToolbar.setSubtitle(null);
 418                     fab.show();
 419                 }
 420                 else {
 421                     mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 422                     fab.hide();
 423                 }
 424             }
 425
 426             updateLastUpdateTextFromDB();
 427         });
 428     }
 429     private void updateLastUpdateDisplay(Date newValue) {
 430         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 431         TextView v = findViewById(R.id.transactions_last_update);
 432         if (newValue == null) {
 433             l.setVisibility(View.INVISIBLE);
 434             debug("main", "no last update date :(");
 435         }
 436         else {
 437             final String text = DateFormat.getDateTimeInstance().format(newValue);
 438             v.setText(text);
 439             l.setVisibility(View.VISIBLE);
 440             debug("main", String.format("Date formatted: %s", text));
 441         }
 442
 443         scheduleDataRetrievalIfStale(newValue);
 444     }
 445     @Override
 446     public void finish() {
 447         if (profilesObserver != null) {
 448             Data.profiles.deleteObserver(profilesObserver);
 449             profilesObserver = null;
 450         }
 451
 452         if (profileObserver != null) {
 453             Data.profile.deleteObserver(profileObserver);
 454             profileObserver = null;
 455         }
 456
 457         super.finish();
 458     }
 459     private void profileThemeChanged() {
 460         setupProfileColors();
 461
 462         Bundle bundle = new Bundle();
 463         onSaveInstanceState(bundle);
 464         // restart activity to reflect theme change
 465         finish();
 466         Intent intent = new Intent(this, this.getClass());
 467         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 468         startActivity(intent);
 469     }
 470     public void startEditProfileActivity(MobileLedgerProfile profile) {
 471         Intent intent = new Intent(this, ProfileDetailActivity.class);
 472         Bundle args = new Bundle();
 473         if (profile != null) {
 474             int index = Data.getProfileIndex(profile);
 475             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 476         }
 477         intent.putExtras(args);
 478         startActivity(intent, args);
 479     }
 480     private void setupProfile() {
 481         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 482         MobileLedgerProfile profile;
 483
 484         profile = Data.getProfile(profileUUID);
 485
 486         if (Data.profiles.isEmpty()) {
 487             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 488             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 489             return;
 490         }
 491
 492         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 493         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 494
 495         if (profile == null) profile = Data.profiles.get(0);
 496
 497         if (profile == null) throw new AssertionError("profile must have a value");
 498
 499         Data.setCurrentProfile(profile);
 500     }
 501     public void fabNewTransactionClicked(View view) {
 502         Intent intent = new Intent(this, NewTransactionActivity.class);
 503         startActivity(intent);
 504         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 505     }
 506     public void navSettingsClicked(View view) {
 507         Intent intent = new Intent(this, SettingsActivity.class);
 508         startActivity(intent);
 509         drawer.closeDrawers();
 510     }
 511     public void markDrawerItemCurrent(int id) {
 512         TextView item = drawer.findViewById(id);
 513         item.setBackgroundColor(Colors.tableRowDarkBG);
 514
 515         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 516         for (int i = 0; i < actions.getChildCount(); i++) {
 517             View view = actions.getChildAt(i);
 518             if (view.getId() != id) {
 519                 view.setBackgroundColor(Color.TRANSPARENT);
 520             }
 521         }
 522     }
 523     public void onAccountSummaryClicked(View view) {
 524         drawer.closeDrawers();
 525
 526         showAccountSummaryFragment();
 527     }
 528     private void showAccountSummaryFragment() {
 529         mViewPager.setCurrentItem(0, true);
 530         Data.accountFilter.setValue(null);
 531     }
 532     public void onLatestTransactionsClicked(View view) {
 533         drawer.closeDrawers();
 534
 535         showTransactionsFragment((String) null);
 536     }
 537     private void showTransactionsFragment(String accName) {
 538         Data.accountFilter.setValue(accName);
 539         mViewPager.setCurrentItem(1, true);
 540     }
 541     private void showTransactionsFragment(LedgerAccount account) {
 542         showTransactionsFragment((account == null) ? null : account.getName());
 543     }
 544     public void showAccountTransactions(LedgerAccount account) {
 545         mBackMeansToAccountList = true;
 546         showTransactionsFragment(account);
 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                 Data.accountFilter.setValue(null);
 557                 showAccountSummaryFragment();
 558                 mBackMeansToAccountList = false;
 559             }
 560             else {
 561                 debug("fragments", String.format("manager stack: %d",
 562                         fragmentManager.getBackStackEntryCount()));
 563
 564                 super.onBackPressed();
 565             }
 566         }
 567     }
 568     public void updateLastUpdateTextFromDB() {
 569         final MobileLedgerProfile profile = Data.profile.get();
 570         long last_update = (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 571
 572         debug("transactions", String.format("Last update = %d", last_update));
 573         if (last_update == 0) {
 574             Data.lastUpdateDate.postValue(null);
 575         }
 576         else {
 577             Data.lastUpdateDate.postValue(new Date(last_update));
 578         }
 579     }
 580     public void scheduleTransactionListRetrieval() {
 581         if (Data.profile.get() == null) return;
 582
 583         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 584
 585         retrieveTransactionsTask.execute();
 586     }
 587     public void onStopTransactionRefreshClick(View view) {
 588         debug("interactive", "Cancelling transactions refresh");
 589         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 590         bTransactionListCancelDownload.setEnabled(false);
 591     }
 592     public void onRetrieveDone(String error) {
 593         progressLayout.setVisibility(View.GONE);
 594
 595         if (error == null) {
 596             updateLastUpdateTextFromDB();
 597
 598             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 599             TransactionListViewModel.scheduleTransactionListReload();
 600         }
 601         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 602     }
 603     public void onRetrieveStart() {
 604         bTransactionListCancelDownload.setEnabled(true);
 605         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 606         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 607         progressBar.setIndeterminate(true);
 608         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 609         else progressBar.setProgress(0);
 610         progressLayout.setVisibility(View.VISIBLE);
 611     }
 612     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 613         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 614             (progress.getTotal() == 0))
 615         {
 616             progressBar.setIndeterminate(true);
 617         }
 618         else {
 619             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 620                 progressBar.setMin(0);
 621             }
 622             progressBar.setMax(progress.getTotal());
 623             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 624                 progressBar.setProgress(progress.getProgress(), true);
 625             }
 626             else progressBar.setProgress(progress.getProgress());
 627             progressBar.setIndeterminate(false);
 628         }
 629     }
 630     public void fabShouldShow() {
 631         MobileLedgerProfile profile = Data.profile.get();
 632         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 633     }
 634     public void navProfilesHeadClicked(View view) {
 635         if (profileListExpanded) {
 636             collapseProfileList();
 637         }
 638         else {
 639             expandProfileList();
 640         }
 641     }
 642     private void expandProfileList() {
 643         profileListExpanded = true;
 644
 645
 646         profileListContainer.setVisibility(View.VISIBLE);
 647         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 648         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 649         profileListHeadMore.setVisibility(View.VISIBLE);
 650         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 651         findViewById(R.id.nav_profile_list).setMinimumHeight(
 652                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 653                        Data.profiles.size()));
 654     }
 655     private void collapseProfileList() {
 656         boolean wasExpanded = profileListExpanded;
 657         profileListExpanded = false;
 658
 659         if (wasExpanded) {
 660             final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 661             animation.setAnimationListener(new Animation.AnimationListener() {
 662                 @Override
 663                 public void onAnimationStart(Animation animation) {
 664
 665                 }
 666                 @Override
 667                 public void onAnimationEnd(Animation animation) {
 668                     profileListContainer.setVisibility(View.GONE);
 669                 }
 670                 @Override
 671                 public void onAnimationRepeat(Animation animation) {
 672
 673                 }
 674             });
 675             mProfileListAdapter.stopEditingProfiles();
 676
 677             profileListContainer.startAnimation(animation);
 678             profileListHeadArrow.setRotation(0f);
 679             profileListHeadArrow
 680                     .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 681             final Animation moreAnimation = AnimationUtils.loadAnimation(this, R.anim.fade_out);
 682             moreAnimation.setAnimationListener(new Animation.AnimationListener() {
 683                 @Override
 684                 public void onAnimationStart(Animation animation) {
 685                 }
 686                 @Override
 687                 public void onAnimationEnd(Animation animation) {
 688                     profileListHeadMore.setVisibility(View.GONE);
 689                 }
 690                 @Override
 691                 public void onAnimationRepeat(Animation animation) {
 692                 }
 693             });
 694             profileListHeadMore.startAnimation(moreAnimation);
 695         }
 696         else {
 697             profileListContainer.setVisibility(View.GONE);
 698             profileListHeadArrow.setRotation(0f);
 699             profileListHeadMore.setVisibility(View.GONE);
 700         }
 701     }
 702     public void onAccountSummaryRowViewClicked(View view) {
 703         ViewGroup row;
 704         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 705         else row = (ViewGroup) view.getParent();
 706
 707         LedgerAccount acc = (LedgerAccount) row.getTag();
 708         switch (view.getId()) {
 709             case R.id.account_row_acc_name:
 710             case R.id.account_expander:
 711             case R.id.account_expander_container:
 712                 debug("accounts", "Account expander clicked");
 713                 if (!acc.hasSubAccounts()) return;
 714
 715                 boolean wasExpanded = acc.isExpanded();
 716
 717                 View arrow = row.findViewById(R.id.account_expander_container);
 718
 719                 arrow.clearAnimation();
 720                 ViewPropertyAnimator animator = arrow.animate();
 721
 722                 acc.toggleExpanded();
 723                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 724                         new Object[]{acc.isExpanded(), acc.getName(), Data.profile.get().getUuid()
 725                         });
 726
 727                 if (wasExpanded) {
 728                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
 729                     arrow.setRotation(0);
 730                     animator.rotationBy(180);
 731
 732                     // removing all child accounts from the view
 733                     int start = -1, count = 0;
 734                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 735                         for (int i = 0; i < Data.accounts.size(); i++) {
 736                             if (acc.isParentOf(Data.accounts.get(i))) {
 737 //                                debug("accounts", String.format("Found a child '%s' at position %d",
 738 //                                        Data.accounts.get(i).getName(), i));
 739                                 if (start == -1) {
 740                                     start = i;
 741                                 }
 742                                 count++;
 743                             }
 744                             else {
 745                                 if (start != -1) {
 746 //                                    debug("accounts",
 747 //                                            String.format("Found a non-child '%s' at position %d",
 748 //                                                    Data.accounts.get(i).getName(), i));
 749                                     break;
 750                                 }
 751                             }
 752                         }
 753
 754                         if (start != -1) {
 755                             for (int j = 0; j < count; j++) {
 756 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
 757 //                                        Data.accounts.get(start).getName()));
 758                                 Data.accounts.removeQuietly(start);
 759                             }
 760
 761                             mAccountSummaryFragment.modelAdapter
 762                                     .notifyItemRangeRemoved(start, count);
 763                         }
 764                     }
 765                 }
 766                 else {
 767                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
 768                     arrow.setRotation(180);
 769                     animator.rotationBy(-180);
 770                     List<LedgerAccount> children =
 771                             Data.profile.get().loadVisibleChildAccountsOf(acc);
 772                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
 773                         int parentPos = Data.accounts.indexOf(acc);
 774                         if (parentPos != -1) {
 775                             // may have disappeared in a concurrent refresh operation
 776                             Data.accounts.addAllQuietly(parentPos + 1, children);
 777                             mAccountSummaryFragment.modelAdapter
 778                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 779                         }
 780                     }
 781                 }
 782                 break;
 783             case R.id.account_row_acc_amounts:
 784                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 785                     acc.toggleAmountsExpanded();
 786                     DbOpQueue
 787                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 788                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 789                                                  Data.profile.get().getUuid()
 790                                     });
 791                     Data.accounts.triggerItemChangedNotification(acc);
 792                 }
 793                 break;
 794         }
 795     }
 796
 797     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 798
 799         SectionsPagerAdapter(FragmentManager fm) {
 800             super(fm);
 801         }
 802
 803         @NotNull
 804         @Override
 805         public Fragment getItem(int position) {
 806             debug("main", String.format("Switching to fragment %d", position));
 807             switch (position) {
 808                 case 0:
 809 //                    debug("flow", "Creating account summary fragment");
 810                     return mAccountSummaryFragment = new AccountSummaryFragment();
 811                 case 1:
 812                     return new TransactionListFragment();
 813                 default:
 814                     throw new IllegalStateException(
 815                             String.format("Unexpected fragment index: " + "%d", position));
 816             }
 817         }
 818
 819         @Override
 820         public int getCount() {
 821             return 2;
 822         }
 823     }
 824 }