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 Toolbar mToolbar;
 106     private DrawerLayout.SimpleDrawerListener drawerListener;
 107     private ActionBarDrawerToggle barDrawerToggle;
 108     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
 109     private Observer editingProfilesObserver;
 110     @Override
 111     protected void onStart() {
 112         super.onStart();
 113
 114         Log.d("flow", "MainActivity.onStart()");
 115         mViewPager.setCurrentItem(mCurrentPage, false);
 116         if (mAccountFilter != null) showTransactionsFragment(mAccountFilter);
 117         else Data.accountFilter.setValue(null);
 118
 119     }
 120     @Override
 121     protected void onSaveInstanceState(Bundle outState) {
 122         super.onSaveInstanceState(outState);
 123         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 124         if (mAccountFilter != null)
 125             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         Log.d("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         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 162         drawer = findViewById(R.id.drawer_layout);
 163         tvLastUpdate = findViewById(R.id.transactions_last_update);
 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                     profileListHeadArrow.clearAnimation();
 268                     profileListHeadArrow.setVisibility(View.GONE);
 269                     profileListHeadMore.setVisibility(View.GONE);
 270                     profileListHeadCancel.setVisibility(View.VISIBLE);
 271                 }
 272                 else {
 273                     profileListHeadArrow.setRotation(180f);
 274                     profileListHeadArrow.setVisibility(View.VISIBLE);
 275                     profileListHeadCancel.setVisibility(View.GONE);
 276                     profileListHeadMore.setVisibility(View.GONE);
 277                     profileListHeadMore
 278                             .setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 279                 }
 280             };
 281             mProfileListAdapter.addEditingProfilesObserver(editingProfilesObserver);
 282         }
 283
 284         LinearLayoutManager llm = new LinearLayoutManager(this);
 285
 286         llm.setOrientation(RecyclerView.VERTICAL);
 287         root.setLayoutManager(llm);
 288
 289         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 290         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 291         profileListHeadMoreAndCancel
 292                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 293
 294         if (drawerListener == null) {
 295             drawerListener = new DrawerLayout.SimpleDrawerListener() {
 296                 @Override
 297                 public void onDrawerClosed(View drawerView) {
 298                     super.onDrawerClosed(drawerView);
 299                     collapseProfileList();
 300                 }
 301             };
 302             drawer.addDrawerListener(drawerListener);
 303         }
 304
 305         findViewById(R.id.nav_profile_list_head_layout)
 306                 .setOnClickListener(this::navProfilesHeadClicked);
 307         findViewById(R.id.nav_profiles_label).setOnClickListener(this::navProfilesHeadClicked);
 308         setupProfile();
 309         onProfileChanged(null);
 310
 311         updateLastUpdateTextFromDB();
 312     }
 313     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
 314         long now = new Date().getTime();
 315         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 316             if (lastUpdate == null) Log.d("db::", "WEB data never fetched. scheduling a fetch");
 317             else Log.d("db",
 318                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 319                             lastUpdate.getTime() / 1000f, now / 1000f));
 320
 321             scheduleTransactionListRetrieval();
 322         }
 323     }
 324     private void createShortcuts() {
 325         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;
 326
 327         List<ShortcutInfo> shortcuts = new ArrayList<>();
 328         try (LockHolder lh = Data.profiles.lockForReading()) {
 329             for (int i = 0; i < Data.profiles.size(); i++) {
 330                 MobileLedgerProfile p = Data.profiles.get(i);
 331                 if (!p.isPostingPermitted()) continue;
 332
 333                 ShortcutInfo si = new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid())
 334                         .setShortLabel(p.getName())
 335                         .setIcon(Icon.createWithResource(this, R.drawable.svg_thick_plus_white))
 336                         .setIntent(new Intent(Intent.ACTION_VIEW, null, this,
 337                                 NewTransactionActivity.class).putExtra("profile_uuid", p.getUuid()))
 338                         .setRank(i).build();
 339                 shortcuts.add(si);
 340             }
 341         }
 342         ShortcutManager sm = getSystemService(ShortcutManager.class);
 343         sm.setDynamicShortcuts(shortcuts);
 344     }
 345     private void onProfileListChanged(Object arg) {
 346         findViewById(R.id.nav_profile_list).setMinimumHeight(
 347                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 348                        Data.profiles.size()));
 349
 350         Log.d("profiles", "profile list changed");
 351         if (arg == null) mProfileListAdapter.notifyDataSetChanged();
 352         else mProfileListAdapter.notifyItemChanged((int) arg);
 353
 354         createShortcuts();
 355     }
 356     private void onProfileChanged(Object arg) {
 357         MobileLedgerProfile profile = Data.profile.get();
 358         MainActivity.this.runOnUiThread(() -> {
 359
 360             boolean haveProfile = profile != null;
 361             findViewById(R.id.no_profiles_layout)
 362                     .setVisibility(haveProfile ? View.GONE : View.VISIBLE);
 363             findViewById(R.id.pager_layout)
 364                     .setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
 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             updateLastUpdateTextFromDB();
 420         });
 421     }
 422     private void updateLastUpdateDisplay(Date newValue) {
 423         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
 424         TextView v = findViewById(R.id.transactions_last_update);
 425         if (newValue == null) {
 426             l.setVisibility(View.INVISIBLE);
 427             Log.d("main", "no last update date :(");
 428         }
 429         else {
 430             final String text = DateFormat.getDateTimeInstance().format(newValue);
 431             v.setText(text);
 432             l.setVisibility(View.VISIBLE);
 433             Log.d("main", String.format("Date formatted: %s", text));
 434         }
 435
 436         scheduleDataRetrievalIfStale(newValue);
 437     }
 438     @Override
 439     public void finish() {
 440         if (profilesObserver != null) {
 441             Data.profiles.deleteObserver(profilesObserver);
 442             profilesObserver = null;
 443         }
 444
 445         if (profileObserver != null) {
 446             Data.profile.deleteObserver(profileObserver);
 447             profileObserver = null;
 448         }
 449
 450         super.finish();
 451     }
 452     private void profileThemeChanged() {
 453         setupProfileColors();
 454
 455         Bundle bundle = new Bundle();
 456         onSaveInstanceState(bundle);
 457         // restart activity to reflect theme change
 458         finish();
 459         Intent intent = new Intent(this, this.getClass());
 460         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 461         startActivity(intent);
 462     }
 463     public void startEditProfileActivity(MobileLedgerProfile profile) {
 464         Intent intent = new Intent(this, ProfileDetailActivity.class);
 465         Bundle args = new Bundle();
 466         if (profile != null) {
 467             int index = Data.getProfileIndex(profile);
 468             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 469         }
 470         intent.putExtras(args);
 471         startActivity(intent, args);
 472     }
 473     private void setupProfile() {
 474         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 475         MobileLedgerProfile profile;
 476
 477         profile = Data.getProfile(profileUUID);
 478
 479         if (Data.profiles.isEmpty()) {
 480             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 481             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 482             return;
 483         }
 484
 485         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 486         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 487
 488         if (profile == null) profile = Data.profiles.get(0);
 489
 490         if (profile == null) throw new AssertionError("profile must have a value");
 491
 492         Data.setCurrentProfile(profile);
 493     }
 494     public void fabNewTransactionClicked(View view) {
 495         Intent intent = new Intent(this, NewTransactionActivity.class);
 496         startActivity(intent);
 497         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 498     }
 499     public void navSettingsClicked(View view) {
 500         Intent intent = new Intent(this, SettingsActivity.class);
 501         startActivity(intent);
 502         drawer.closeDrawers();
 503     }
 504     public void markDrawerItemCurrent(int id) {
 505         TextView item = drawer.findViewById(id);
 506         item.setBackgroundColor(Colors.tableRowDarkBG);
 507
 508         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 509         for (int i = 0; i < actions.getChildCount(); i++) {
 510             View view = actions.getChildAt(i);
 511             if (view.getId() != id) {
 512                 view.setBackgroundColor(Color.TRANSPARENT);
 513             }
 514         }
 515     }
 516     public void onAccountSummaryClicked(View view) {
 517         drawer.closeDrawers();
 518
 519         showAccountSummaryFragment();
 520     }
 521     private void showAccountSummaryFragment() {
 522         mViewPager.setCurrentItem(0, true);
 523         Data.accountFilter.setValue(null);
 524 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 525 //        accountSummaryFragment = new AccountSummaryFragment();
 526 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 527 //        ft.commit();
 528 //        currentFragment = accountSummaryFragment;
 529     }
 530     public void onLatestTransactionsClicked(View view) {
 531         drawer.closeDrawers();
 532
 533         showTransactionsFragment((String) null);
 534     }
 535     private void resetFragmentBackStack() {
 536 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 537     }
 538     private void showTransactionsFragment(String accName) {
 539         Data.accountFilter.setValue(accName);
 540         mViewPager.setCurrentItem(1, true);
 541     }
 542     private void showTransactionsFragment(LedgerAccount account) {
 543         showTransactionsFragment((account == null) ? (String) null : account.getName());
 544 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 545 //        if (transactionListFragment == null) {
 546 //            Log.d("flow", "MainActivity creating TransactionListFragment");
 547 //            transactionListFragment = new TransactionListFragment();
 548 //        }
 549 //        Bundle bundle = new Bundle();
 550 //        if (account != null) {
 551 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 552 //                    account.getName());
 553 //        }
 554 //        transactionListFragment.setArguments(bundle);
 555 //        ft.replace(R.id.root_frame, transactionListFragment);
 556 //        if (account != null)
 557 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 558 //        ft.commit();
 559 //
 560 //        currentFragment = transactionListFragment;
 561     }
 562     public void showAccountTransactions(LedgerAccount account) {
 563         mBackMeansToAccountList = true;
 564         showTransactionsFragment(account);
 565     }
 566     @Override
 567     public void onBackPressed() {
 568         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 569         if (drawer.isDrawerOpen(GravityCompat.START)) {
 570             drawer.closeDrawer(GravityCompat.START);
 571         }
 572         else {
 573             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
 574                 Data.accountFilter.setValue(null);
 575                 showAccountSummaryFragment();
 576                 mBackMeansToAccountList = false;
 577             }
 578             else {
 579                 Log.d("fragments", String.format("manager stack: %d",
 580                         fragmentManager.getBackStackEntryCount()));
 581
 582                 super.onBackPressed();
 583             }
 584         }
 585     }
 586     public void updateLastUpdateTextFromDB() {
 587         final MobileLedgerProfile profile = Data.profile.get();
 588         long last_update = (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.postValue(null);
 593         }
 594         else {
 595             Data.lastUpdateDate.postValue(new Date(last_update));
 596         }
 597     }
 598     public void scheduleTransactionListRetrieval() {
 599         if (Data.profile.get() == null) return;
 600
 601         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 602
 603         retrieveTransactionsTask.execute();
 604     }
 605     public void onStopTransactionRefreshClick(View view) {
 606         Log.d("interactive", "Cancelling transactions refresh");
 607         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 608         bTransactionListCancelDownload.setEnabled(false);
 609     }
 610     public void onRetrieveDone(String error) {
 611         progressLayout.setVisibility(View.GONE);
 612
 613         if (error == null) {
 614             updateLastUpdateTextFromDB();
 615
 616             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 617             TransactionListViewModel.scheduleTransactionListReload();
 618         }
 619         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 620     }
 621     public void onRetrieveStart() {
 622         bTransactionListCancelDownload.setEnabled(true);
 623         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 624         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 625         progressBar.setIndeterminate(true);
 626         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 627         else progressBar.setProgress(0);
 628         progressLayout.setVisibility(View.VISIBLE);
 629     }
 630     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 631         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 632             (progress.getTotal() == 0))
 633         {
 634             progressBar.setIndeterminate(true);
 635         }
 636         else {
 637             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 638                 progressBar.setMin(0);
 639             }
 640             progressBar.setMax(progress.getTotal());
 641             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 642                 progressBar.setProgress(progress.getProgress(), true);
 643             }
 644             else progressBar.setProgress(progress.getProgress());
 645             progressBar.setIndeterminate(false);
 646         }
 647     }
 648     public void fabShouldShow() {
 649         MobileLedgerProfile profile = Data.profile.get();
 650         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 651     }
 652     public void navProfilesHeadClicked(View view) {
 653         if (profileListExpanded) {
 654             collapseProfileList();
 655         }
 656         else {
 657             expandProfileList();
 658         }
 659     }
 660     private void expandProfileList() {
 661         profileListExpanded = true;
 662
 663
 664         profileListContainer.setVisibility(View.VISIBLE);
 665         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 666         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 667         profileListHeadMore.setVisibility(View.VISIBLE);
 668         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 669         findViewById(R.id.nav_profile_list).setMinimumHeight(
 670                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 671                        Data.profiles.size()));
 672     }
 673     private void collapseProfileList() {
 674         profileListExpanded = false;
 675
 676         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 677         animation.setAnimationListener(new Animation.AnimationListener() {
 678             @Override
 679             public void onAnimationStart(Animation animation) {
 680
 681             }
 682             @Override
 683             public void onAnimationEnd(Animation animation) {
 684                 profileListContainer.setVisibility(View.GONE);
 685             }
 686             @Override
 687             public void onAnimationRepeat(Animation animation) {
 688
 689             }
 690         });
 691         mProfileListAdapter.stopEditingProfiles();
 692
 693         profileListContainer.startAnimation(animation);
 694         profileListHeadArrow.setRotation(0f);
 695         profileListHeadArrow
 696                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 697         profileListHeadMore.setVisibility(View.GONE);
 698     }
 699     public void onAccountSummaryRowViewClicked(View view) {
 700         ViewGroup row;
 701         if (view.getId() == R.id.account_expander) row = (ViewGroup) view.getParent().getParent();
 702         else row = (ViewGroup) view.getParent();
 703
 704         LedgerAccount acc = (LedgerAccount) row.getTag();
 705         switch (view.getId()) {
 706             case R.id.account_row_acc_name:
 707             case R.id.account_expander:
 708             case R.id.account_expander_container:
 709                 Log.d("accounts", "Account expander clicked");
 710                 if (!acc.hasSubAccounts()) return;
 711
 712                 boolean wasExpanded = acc.isExpanded();
 713
 714                 View arrow = row.findViewById(R.id.account_expander_container);
 715
 716                 arrow.clearAnimation();
 717                 ViewPropertyAnimator animator = arrow.animate();
 718
 719                 acc.toggleExpanded();
 720                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
 721                         new Object[]{acc.isExpanded(), acc.getName(), Data.profile.get().getUuid()
 722                         });
 723
 724                 if (wasExpanded) {
 725                     Log.d("accounts", String.format("Collapsing account '%s'", acc.getName()));
 726                     arrow.setRotation(0);
 727                     animator.rotationBy(180);
 728
 729                     // removing all child accounts from the view
 730                     int start = -1, count = 0;
 731                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 732                         for (int i = 0; i < Data.accounts.size(); i++) {
 733                             if (acc.isParentOf(Data.accounts.get(i))) {
 734 //                                Log.d("accounts", String.format("Found a child '%s' at position %d",
 735 //                                        Data.accounts.get(i).getName(), i));
 736                                 if (start == -1) {
 737                                     start = i;
 738                                 }
 739                                 count++;
 740                             }
 741                             else {
 742                                 if (start != -1) {
 743 //                                    Log.d("accounts",
 744 //                                            String.format("Found a non-child '%s' at position %d",
 745 //                                                    Data.accounts.get(i).getName(), i));
 746                                     break;
 747                                 }
 748                             }
 749                         }
 750
 751                         if (start != -1) {
 752                             for (int j = 0; j < count; j++) {
 753 //                                Log.d("accounts", String.format("Removing item %d: %s", start + j,
 754 //                                        Data.accounts.get(start).getName()));
 755                                 Data.accounts.removeQuietly(start);
 756                             }
 757
 758                             mAccountSummaryFragment.modelAdapter
 759                                     .notifyItemRangeRemoved(start, count);
 760                         }
 761                     }
 762                 }
 763                 else {
 764                     Log.d("accounts", String.format("Expanding account '%s'", acc.getName()));
 765                     arrow.setRotation(180);
 766                     animator.rotationBy(-180);
 767                     List<LedgerAccount> children =
 768                             Data.profile.get().loadVisibleChildAccountsOf(acc);
 769                     try (LockHolder lh = Data.accounts.lockForWriting()) {
 770                         int parentPos = Data.accounts.indexOf(acc);
 771                         if (parentPos != -1) {
 772                             // may have disappeared in a concurrent refresh operation
 773                             Data.accounts.addAllQuietly(parentPos + 1, children);
 774                             mAccountSummaryFragment.modelAdapter
 775                                     .notifyItemRangeInserted(parentPos + 1, children.size());
 776                         }
 777                     }
 778                 }
 779                 break;
 780             case R.id.account_row_acc_amounts:
 781                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
 782                     acc.toggleAmountsExpanded();
 783                     DbOpQueue
 784                             .add("update accounts set amounts_expanded=? where name=? and profile=?",
 785                                     new Object[]{acc.amountsExpanded(), acc.getName(),
 786                                                  Data.profile.get().getUuid()
 787                                     });
 788                     Data.accounts.triggerItemChangedNotification(acc);
 789                 }
 790                 break;
 791         }
 792     }
 793
 794     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 795
 796         public SectionsPagerAdapter(FragmentManager fm) {
 797             super(fm);
 798         }
 799
 800         @Override
 801         public Fragment getItem(int position) {
 802             Log.d("main", String.format("Switching to fragment %d", position));
 803             switch (position) {
 804                 case 0:
 805 //                    Log.d("flow", "Creating account summary fragment");
 806                     return mAccountSummaryFragment = new AccountSummaryFragment();
 807                 case 1:
 808                     return new TransactionListFragment();
 809                 default:
 810                     throw new IllegalStateException(
 811                             String.format("Unexpected fragment index: " + "%d", position));
 812             }
 813         }
 814
 815         @Override
 816         public int getCount() {
 817             return 2;
 818         }
 819     }
 820 }