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 java.lang.ref.WeakReference;
  62 import java.text.DateFormat;
  63 import java.util.ArrayList;
  64 import java.util.Date;
  65 import java.util.List;
  66 import java.util.Observer;
  67
  68 import androidx.appcompat.app.ActionBarDrawerToggle;
  69 import androidx.appcompat.widget.Toolbar;
  70 import androidx.core.view.GravityCompat;
  71 import androidx.drawerlayout.widget.DrawerLayout;
  72 import androidx.fragment.app.Fragment;
  73 import androidx.fragment.app.FragmentManager;
  74 import androidx.fragment.app.FragmentPagerAdapter;
  75 import androidx.recyclerview.widget.LinearLayoutManager;
  76 import androidx.recyclerview.widget.RecyclerView;
  77 import androidx.viewpager.widget.ViewPager;
  78
  79 public class MainActivity extends ProfileThemedActivity {
  80     public static final String STATE_CURRENT_PAGE = "current_page";
  81     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  82     public static final String STATE_ACC_FILTER = "account_filter";
  83     public AccountSummaryFragment mAccountSummaryFragment;
  84     DrawerLayout drawer;
  85     private LinearLayout profileListContainer;
  86     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  87     private LinearLayout profileListHeadMoreAndCancel;
  88     private FragmentManager fragmentManager;
  89     private TextView tvLastUpdate;
  90     private RetrieveTransactionsTask retrieveTransactionsTask;
  91     private View bTransactionListCancelDownload;
  92     private ProgressBar progressBar;
  93     private LinearLayout progressLayout;
  94     private SectionsPagerAdapter mSectionsPagerAdapter;
  95     private ViewPager mViewPager;
  96     private FloatingActionButton fab;
  97     private boolean profileModificationEnabled = false;
  98     private boolean profileListExpanded = false;
  99     private ProfilesRecyclerViewAdapter mProfileListAdapter;
 100     private int mCurrentPage;
 101     private String mAccountFilter;
 102     private boolean mBackMeansToAccountList = false;
 103     private Observer profileObserver;
 104     private Observer profilesObserver;
 105     private Observer lastUpdateDateObserver;
 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         Log.d("flow", "MainActivity.onStart()");
 116         mViewPager.setCurrentItem(mCurrentPage, false);
 117         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 118         else Data.accountFilter.set(null);
 119
 120     }
 121     @Override
 122     protected void onSaveInstanceState(Bundle outState) {
 123         super.onSaveInstanceState(outState);
 124         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 125         if (Data.accountFilter.get() != null)
 126             outState.putString(STATE_ACC_FILTER, Data.accountFilter.get());
 127     }
 128     @Override
 129     protected void onDestroy() {
 130         mSectionsPagerAdapter = null;
 131         Data.profile.deleteObserver(profileObserver);
 132         profileObserver = null;
 133         Data.profiles.deleteObserver(profilesObserver);
 134         profilesObserver = null;
 135         Data.lastUpdateDate.deleteObserver(lastUpdateDateObserver);
 136         lastUpdateDateObserver = null;
 137         RecyclerView root = findViewById(R.id.nav_profile_list);
 138         if (root != null) root.setAdapter(null);
 139         if (drawer != null) drawer.removeDrawerListener(drawerListener);
 140         drawerListener = null;
 141         if (drawer != null) drawer.removeDrawerListener(barDrawerToggle);
 142         barDrawerToggle = null;
 143         if (mViewPager != null) mViewPager.removeOnPageChangeListener(pageChangeListener);
 144         pageChangeListener = null;
 145         if (mProfileListAdapter != null)
 146             mProfileListAdapter.deleteEditingProfilesObserver(editingProfilesObserver);
 147         editingProfilesObserver = null;
 148         super.onDestroy();
 149     }
 150     @Override
 151     protected void onCreate(Bundle savedInstanceState) {
 152         super.onCreate(savedInstanceState);
 153         Log.d("flow", "MainActivity.onCreate()");
 154         int profileColor = Data.retrieveCurrentThemeIdFromDb();
 155         Colors.setupTheme(this, profileColor);
 156         Colors.profileThemeId = profileColor;
 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         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 165         drawer = findViewById(R.id.drawer_layout);
 166         tvLastUpdate = findViewById(R.id.transactions_last_update);
 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         if (profileObserver == null) {
 182             profileObserver = (o, arg) -> onProfileChanged(arg);
 183             Data.profile.addObserver(profileObserver);
 184         }
 185
 186         if (profilesObserver == null) {
 187             profilesObserver = (o, arg) -> onProfileListChanged(arg);
 188             Data.profiles.addObserver(profilesObserver);
 189         }
 190
 191         if (barDrawerToggle == null) {
 192             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
 193                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 194             drawer.addDrawerListener(barDrawerToggle);
 195         }
 196         barDrawerToggle.syncState();
 197
 198         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 199
 200         try {
 201             PackageInfo pi =
 202                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 203             ver.setText(pi.versionName);
 204         }
 205         catch (Exception e) {
 206             e.printStackTrace();
 207         }
 208
 209         if (progressBar == null)
 210             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 211         if (progressLayout == null) throw new RuntimeException(
 212                 "Can't get hold on the transaction value progress bar layout");
 213
 214         markDrawerItemCurrent(R.id.nav_account_summary);
 215
 216         mViewPager.setAdapter(mSectionsPagerAdapter);
 217
 218         if (pageChangeListener == null) {
 219             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 220                 @Override
 221                 public void onPageSelected(int position) {
 222                     switch (position) {
 223                         case 0:
 224                             markDrawerItemCurrent(R.id.nav_account_summary);
 225                             break;
 226                         case 1:
 227                             markDrawerItemCurrent(R.id.nav_latest_transactions);
 228                             break;
 229                         default:
 230                             Log.e("MainActivity",
 231                                     String.format("Unexpected page index %d", position));
 232                     }
 233
 234                     super.onPageSelected(position);
 235                 }
 236             };
 237             mViewPager.addOnPageChangeListener(pageChangeListener);
 238         }
 239
 240         mCurrentPage = 0;
 241         if (savedInstanceState != null) {
 242             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 243             if (currentPage != -1) {
 244                 mCurrentPage = currentPage;
 245             }
 246             mAccountFilter = savedInstanceState.getString(STATE_ACC_FILTER, null);
 247         }
 248         else mAccountFilter = null;
 249
 250         if (lastUpdateDateObserver == null) {
 251             lastUpdateDateObserver = (o, arg) -> {
 252                 Log.d("main", "lastUpdateDate changed");
 253                 runOnUiThread(this::updateLastUpdateDisplay);
 254             };
 255             Data.lastUpdateDate.addObserver(lastUpdateDateObserver);
 256         }
 257
 258         updateLastUpdateDisplay();
 259
 260         findViewById(R.id.btn_no_profiles_add)
 261                 .setOnClickListener(v -> startEditProfileActivity(null));
 262
 263         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 264
 265         findViewById(R.id.nav_new_profile_button)
 266                 .setOnClickListener(v -> startEditProfileActivity(null));
 267
 268         RecyclerView root = findViewById(R.id.nav_profile_list);
 269         if (root == null)
 270             throw new RuntimeException("Can't get hold on the transaction value view");
 271
 272         if (mProfileListAdapter == null) mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 273         root.setAdapter(mProfileListAdapter);
 274
 275         if (editingProfilesObserver == null) {
 276             editingProfilesObserver = (o, arg) -> {
 277                 if (mProfileListAdapter.isEditingProfiles()) {
 278                     profileListHeadArrow.clearAnimation();
 279                     profileListHeadArrow.setVisibility(View.GONE);
 280                     profileListHeadMore.setVisibility(View.GONE);
 281                     profileListHeadCancel.setVisibility(View.VISIBLE);
 282                 }
 283                 else {
 284                     profileListHeadArrow.setRotation(180f);
 285                     profileListHeadArrow.setVisibility(View.VISIBLE);
 286                     profileListHeadCancel.setVisibility(View.GONE);
 287                     profileListHeadMore.setVisibility(View.GONE);
 288                     profileListHeadMore
 289                             .setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 290                 }
 291             };
 292             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 293         }
 294
 295         LinearLayoutManager llm = new LinearLayoutManager(this);
 296
 297         llm.setOrientation(RecyclerView.VERTICAL);
 298         root.setLayoutManager(llm);
 299
 300         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 301         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 302         profileListHeadMoreAndCancel
 303                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 304
 305         if (drawerListener == null) {
 306             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 307                 @Override
 308                 public void onDrawerClosed(View drawerView) {
 309                     super.onDrawerClosed(drawerView);
 310                     collapseProfileList();
 311                 }
 312             };
 313             drawer.addDrawerListener(drawerListener);
 314         }
 315
 316         setupProfile();
 317         onProfileChanged(null);
 318
 319         updateLastUpdateTextFromDB();
 320         Date lastUpdate = Data.lastUpdateDate.get();
 321
 322         long now = new Date().getTime();
 323         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 324             if (lastUpdate == null) Log.d("db::", "WEB data never fetched. scheduling a fetch");
 325             else Log.d("db",
 326                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 327                             lastUpdate.getTime() / 1000f, now / 1000f));
 328
 329             scheduleTransactionListRetrieval();
 330         }
 331     }
 332     private void createShortcuts() {
 333         List<ShortcutInfo> shortcuts = new ArrayList<>();
 334         try (LockHolder lh = Data.profiles.lockForReading()) {
 335             for (int i = 0; i < Data.profiles.size(); i++) {
 336                 MobileLedgerProfile p = Data.profiles.get(i);
 337                 if (!p.isPostingPermitted()) continue;
 338
 339                 ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 340                         .setShortLabel(p.getName())
 341                         .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 342                         .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 343                                 NewTransactionActivity.class).putExtra("profile_uuid", p.getUuid()))
 344                         .setRank(i).build();
 345                 shortcuts.add(si);
 346             }
 347         }
 348         ShortcutManager sm = getSystemService(ShortcutManager.class);
 349         sm.setDynamicShortcuts(shortcuts);
 350     }
 351     private void onProfileListChanged(Object arg) {
 352         findViewById(R.id.nav_profile_list).setMinimumHeight(
 353                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 354                        Data.profiles.size()));
 355
 356         Log.d("profiles", "profile list changed");
 357         if (arg == null) mProfileListAdapter.notifyDataSetChanged();
 358         else mProfileListAdapter.notifyItemChanged((int) arg);
 359
 360         createShortcuts();
 361     }
 362     private void onProfileChanged(Object arg) {
 363         MobileLedgerProfile profile = Data.profile.get();
 364         MainActivity.this.runOnUiThread(() -> {
 365
 366             Data.transactions.clear();
 367             Log.d("transactions", "requesting list reload");
 368             TransactionListViewModel.scheduleTransactionListReload();
 369
 370             Data.accounts.clear();
 371             AccountSummaryViewModel.scheduleAccountListReload();
 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                 Log.d("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             if (profile == null) {
 405                 mToolbar.setSubtitle(null);
 406                 fab.hide();
 407             }
 408             else {
 409                 if (profile.isPostingPermitted()) {
 410                     mToolbar.setSubtitle(null);
 411                     fab.show();
 412                 }
 413                 else {
 414                     mToolbar.setSubtitle(R.string.profile_subitlte_read_only);
 415                     fab.hide();
 416                 }
 417             }
 418         });
 419     }
 420     private void updateLastUpdateDisplay() {
 421         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 422         TextView v = findViewById(R.id.transactions_last_update);
 423         Date date = Data.lastUpdateDate.get();
 424         if (date == null) {
 425             l.setVisibility(View.INVISIBLE);
 426             Log.d("main", "no last update date :(");
 427         }
 428         else {
 429             final String text = DateFormat.getDateTimeInstance().format(date);
 430             v.setText(text);
 431             l.setVisibility(View.VISIBLE);
 432             Log.d("main", String.format("Date formatted: %s", text));
 433         }
 434     }
 435     @Override
 436     public void finish() {
 437         if (profilesObserver != null) {
 438             Data.profiles.deleteObserver(profilesObserver);
 439             profilesObserver = null;
 440         }
 441
 442         if (profileObserver != null) {
 443             Data.profile.deleteObserver(profileObserver);
 444             profileObserver = null;
 445         }
 446
 447         super.finish();
 448     }
 449     private void profileThemeChanged() {
 450         setupProfileColors();
 451
 452         Bundle bundle = new Bundle();
 453         onSaveInstanceState(bundle);
 454         // restart activity to reflect theme change
 455         finish();
 456         Intent intent = new Intent(this, this.getClass());
 457         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 458         startActivity(intent);
 459     }
 460     public void startEditProfileActivity(MobileLedgerProfile profile) {
 461         Intent intent = new Intent(this, ProfileDetailActivity.class);
 462         Bundle args = new Bundle();
 463         if (profile != null) {
 464             int index = Data.getProfileIndex(profile);
 465             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 466         }
 467         intent.putExtras(args);
 468         startActivity(intent, args);
 469     }
 470     private void setupProfile() {
 471         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 472         MobileLedgerProfile profile;
 473
 474         profile = Data.getProfile(profileUUID);
 475
 476         if (Data.profiles.isEmpty()) {
 477             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 478             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 479             return;
 480         }
 481
 482         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 483         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 484
 485         if (profile == null) profile = Data.profiles.get(0);
 486
 487         if (profile == null) throw new AssertionError("profile must have a value");
 488
 489         Data.setCurrentProfile(profile);
 490     }
 491     public void fabNewTransactionClicked(View view) {
 492         Intent intent = new Intent(this, NewTransactionActivity.class);
 493         startActivity(intent);
 494         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 495     }
 496     public void navSettingsClicked(View view) {
 497         Intent intent = new Intent(this, SettingsActivity.class);
 498         startActivity(intent);
 499         drawer.closeDrawers();
 500     }
 501     public void markDrawerItemCurrent(int id) {
 502         TextView item = drawer.findViewById(id);
 503         item.setBackgroundColor(Colors.tableRowDarkBG);
 504
 505         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 506         for (int i = 0; i < actions.getChildCount(); i++) {
 507             View view = actions.getChildAt(i);
 508             if (view.getId() != id) {
 509                 view.setBackgroundColor(Color.TRANSPARENT);
 510             }
 511         }
 512     }
 513     public void onAccountSummaryClicked(View view) {
 514         drawer.closeDrawers();
 515
 516         showAccountSummaryFragment();
 517     }
 518     private void showAccountSummaryFragment() {
 519         mViewPager.setCurrentItem(0, true);
 520         Data.accountFilter.set(null);
 521 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 522 //        accountSummaryFragment = new AccountSummaryFragment();
 523 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 524 //        ft.commit();
 525 //        currentFragment = accountSummaryFragment;
 526     }
 527     public void onLatestTransactionsClicked(View view) {
 528         drawer.closeDrawers();
 529
 530         showTransactionsFragment((String) null);
 531     }
 532     private void resetFragmentBackStack() {
 533 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 534     }
 535     private void showTransactionsFragment(String accName) {
 536         Data.accountFilter.set(accName);
 537         Data.accountFilter.notifyObservers();
 538         mViewPager.setCurrentItem(1, true);
 539     }
 540     private void showTransactionsFragment(LedgerAccount account) {
 541         showTransactionsFragment((account == null) ? (String) null : account.getName());
 542 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 543 //        if (transactionListFragment == null) {
 544 //            Log.d("flow", "MainActivity creating TransactionListFragment");
 545 //            transactionListFragment = new TransactionListFragment();
 546 //        }
 547 //        Bundle bundle = new Bundle();
 548 //        if (account != null) {
 549 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 550 //                    account.getName());
 551 //        }
 552 //        transactionListFragment.setArguments(bundle);
 553 //        ft.replace(R.id.root_frame, transactionListFragment);
 554 //        if (account != null)
 555 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 556 //        ft.commit();
 557 //
 558 //        currentFragment = transactionListFragment;
 559     }
 560     public void showAccountTransactions(LedgerAccount account) {
 561         mBackMeansToAccountList = true;
 562         showTransactionsFragment(account);
 563     }
 564     @Override
 565     public void onBackPressed() {
 566         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 567         if (drawer.isDrawerOpen(GravityCompat.START)) {
 568             drawer.closeDrawer(GravityCompat.START);
 569         }
 570         else {
 571             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 572                 Data.accountFilter.set(null);
 573                 showAccountSummaryFragment();
 574                 mBackMeansToAccountList = false;
 575             }
 576             else {
 577                 Log.d("fragments", String.format("manager stack: %d",
 578                         fragmentManager.getBackStackEntryCount()));
 579
 580                 super.onBackPressed();
 581             }
 582         }
 583     }
 584     public void updateLastUpdateTextFromDB() {
 585         {
 586             final MobileLedgerProfile profile = Data.profile.get();
 587             long last_update =
 588                     (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 589
 590             Log.d("transactions", String.format("Last update = %d", last_update));
 591             if (last_update == 0) {
 592                 Data.lastUpdateDate.set(null);
 593             }
 594             else {
 595                 Data.lastUpdateDate.set(new Date(last_update));
 596             }
 597         }
 598     }
 599     public void scheduleTransactionListRetrieval() {
 600         if (Data.profile.get() == null) return;
 601
 602         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 603
 604         retrieveTransactionsTask.execute();
 605     }
 606     public void onStopTransactionRefreshClick(View view) {
 607         Log.d("interactive", "Cancelling transactions refresh");
 608         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 609         bTransactionListCancelDownload.setEnabled(false);
 610     }
 611     public void onRetrieveDone(String error) {
 612         progressLayout.setVisibility(View.GONE);
 613
 614         if (error == null) {
 615             updateLastUpdateTextFromDB();
 616
 617             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 618             TransactionListViewModel.scheduleTransactionListReload();
 619         }
 620         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 621     }
 622     public void onRetrieveStart() {
 623         bTransactionListCancelDownload.setEnabled(true);
 624         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 625         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 626         progressBar.setIndeterminate(true);
 627         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 628         else progressBar.setProgress(0);
 629         progressLayout.setVisibility(View.VISIBLE);
 630     }
 631     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 632         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 633             (progress.getTotal() == 0))
 634         {
 635             progressBar.setIndeterminate(true);
 636         }
 637         else {
 638             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 639                 progressBar.setMin(0);
 640             }
 641             progressBar.setMax(progress.getTotal());
 642             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 643                 progressBar.setProgress(progress.getProgress(), true);
 644             }
 645             else progressBar.setProgress(progress.getProgress());
 646             progressBar.setIndeterminate(false);
 647         }
 648     }
 649     public void fabShouldShow() {
 650         MobileLedgerProfile profile = Data.profile.get();
 651         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 652     }
 653     public void navProfilesHeadClicked(View view) {
 654         if (profileListExpanded) {
 655             collapseProfileList();
 656         }
 657         else {
 658             expandProfileList();
 659         }
 660     }
 661     private void expandProfileList() {
 662         profileListExpanded = true;
 663
 664
 665         profileListContainer.setVisibility(View.VISIBLE);
 666         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 667         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 668         profileListHeadMore.setVisibility(View.VISIBLE);
 669         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 670         findViewById(R.id.nav_profile_list).setMinimumHeight(
 671                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 672                        Data.profiles.size()));
 673     }
 674     private void collapseProfileList() {
 675         profileListExpanded = false;
 676
 677         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 678         animation.setAnimationListener(new Animation.AnimationListener() {
 679             @Override
 680             public void onAnimationStart(Animation animation) {
 681
 682             }
 683             @Override
 684             public void onAnimationEnd(Animation animation) {
 685                 profileListContainer.setVisibility(View.GONE);
 686             }
 687             @Override
 688             public void onAnimationRepeat(Animation animation) {
 689
 690             }
 691         });
 692         mProfileListAdapter.stopEditingProfiles();
 693
 694         profileListContainer.startAnimation(animation);
 695         profileListHeadArrow.setRotation(0f);
 696         profileListHeadArrow
 697                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 698         profileListHeadMore.setVisibility(View.GONE);
 699     }
 700     public void onProfileRowClicked(View v) {
 701         Data.setCurrentProfile((MobileLedgerProfile) v.getTag());
 702     }
 703     public void enableProfileModifications() {
 704         profileModificationEnabled = true;
 705         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 706         for (int i = 0; i < profileList.getChildCount(); i++) {
 707             View aRow = profileList.getChildAt(i);
 708             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.VISIBLE);
 709             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.VISIBLE);
 710         }
 711         // FIXME enable rearranging
 712
 713     }
 714     public void disableProfileModifications() {
 715         profileModificationEnabled = false;
 716         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 717         for (int i = 0; i < profileList.getChildCount(); i++) {
 718             View aRow = profileList.getChildAt(i);
 719             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.GONE);
 720             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.INVISIBLE);
 721         }
 722         // FIXME disable rearranging
 723
 724     }
 725     public void onAccountSummaryRowViewClicked(View view) {
 726         ViewGroup row;
 727         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 728         else row = (ViewGroup) view.getParent();
 729
 730         LedgerAccount acc = (LedgerAccount) row.getTag();
 731         switch (view.getId()) {
 732             case R.id.account_row_acc_name:
 733             case R.id.account_expander:
 734             case R.id.account_expander_container:
 735                 Log.d("accounts", "Account expander clicked");
 736                 if (!acc.hasSubAccounts()) return;
 737
 738                 boolean wasExpanded = acc.isExpanded();
 739
 740                 View arrow = row.findViewById(R.id.account_expander_container);
 741
 742                 arrow.clearAnimation();
 743                 ViewPropertyAnimator animator = arrow.animate();
 744
 745                 acc.toggleExpanded();
 746                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 747                         new Object[]{acc.isExpanded(), acc.getName(), Data.profile.get().getUuid()
 748                         });
 749
 750                 if (wasExpanded) {
 751                     Log.d("accounts", String.format("Collapsing account '%s'", acc.getName()));
 752                     arrow.setRotation(0);
 753                     animator.rotationBy(180);
 754
 755                     // removing all child accounts from the view
 756                     int start = -1, count = 0;
 757                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 758                         for (int i = 0; i < Data.accounts.size(); i++) {
 759                             if (acc.isParentOf(Data.accounts.get(i))) {
 760 //                                Log.d("accounts", String.format("Found a child '%s' at position %d",
 761 //                                        Data.accounts.get(i).getName(), i));
 762                                 if (start == -1) {
 763                                     start = i;
 764                                 }
 765                                 count++;
 766                             }
 767                             else {
 768                                 if (start != -1) {
 769 //                                    Log.d("accounts",
 770 //                                            String.format("Found a non-child '%s' at position %d",
 771 //                                                    Data.accounts.get(i).getName(), i));
 772                                     break;
 773                                 }
 774                             }
 775                         }
 776
 777                         if (start != -1) {
 778                             for (int j = 0; j < count; j++) {
 779 //                                Log.d("accounts", String.format("Removing item %d: %s", start + j,
 780 //                                        Data.accounts.get(start).getName()));
 781                                 Data.accounts.removeQuietly(start);
 782                             }
 783
 784                             mAccountSummaryFragment.modelAdapter
 785                                     .notifyItemRangeRemoved(start, count);
 786                         }
 787                     }
 788                 }
 789                 else {
 790                     Log.d("accounts", String.format("Expanding account '%s'", acc.getName()));
 791                     arrow.setRotation(180);
 792                     animator.rotationBy(-180);
 793                     List<LedgerAccount> children =
 794                             Data.profile.get().loadVisibleChildAccountsOf(acc);
 795                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 796                         int parentPos = Data.accounts.indexOf(acc);
 797                         if (parentPos != -1) {
 798                             // may have disappeared in a concurrent refresh operation
 799                             Data.accounts.addAllQuietly(parentPos + 1, children);
 800                             mAccountSummaryFragment.modelAdapter
 801                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 802                         }
 803                     }
 804                 }
 805                 break;
 806             case R.id.account_row_acc_amounts:
 807                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 808                     acc.toggleAmountsExpanded();
 809                     DbOpQueue
 810                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 811                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 812                                                  Data.profile.get().getUuid()
 813                                     });
 814                     Data.accounts.triggerItemChangedNotification(acc);
 815                 }
 816                 break;
 817         }
 818     }
 819
 820     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 821
 822         public SectionsPagerAdapter(FragmentManager fm) {
 823             super(fm);
 824         }
 825
 826         @Override
 827         public Fragment getItem(int position) {
 828             Log.d("main", String.format("Switching to fragment %d", position));
 829             switch (position) {
 830                 case 0:
 831 //                    Log.d("flow", "Creating account summary fragment");
 832                     return mAccountSummaryFragment = new AccountSummaryFragment();
 833                 case 1:
 834                     return new TransactionListFragment();
 835                 default:
 836                     throw new IllegalStateException(
 837                             String.format("Unexpected fragment index: " + "%d", position));
 838             }
 839         }
 840
 841         @Override
 842         public int getCount() {
 843             return 2;
 844         }
 845     }
 846 }