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[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / activity / MainActivity.java
1 /*
2  * Copyright © 2019 Damyan Ivanov.
3  * This file is part of MoLe.
4  * MoLe is free software: you can distribute it and/or modify it
5  * under the term of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your opinion), any later version.
8  *
9  * MoLe is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License terms for details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
16  */
17
18 package net.ktnx.mobileledger.ui.activity;
19
20 import android.content.Intent;
21 import android.content.SharedPreferences;
22 import android.content.pm.PackageInfo;
23 import android.content.pm.ShortcutInfo;
24 import android.content.pm.ShortcutManager;
25 import android.content.res.ColorStateList;
26 import android.graphics.Color;
27 import android.graphics.drawable.Icon;
28 import android.os.AsyncTask;
29 import android.os.Build;
30 import android.os.Bundle;
31 import android.util.Log;
32 import android.view.View;
33 import android.view.ViewGroup;
34 import android.view.ViewPropertyAnimator;
35 import android.view.animation.AnimationUtils;
36 import android.widget.LinearLayout;
37 import android.widget.ProgressBar;
38 import android.widget.TextView;
39
40 import androidx.annotation.NonNull;
41 import androidx.appcompat.app.ActionBarDrawerToggle;
42 import androidx.appcompat.widget.Toolbar;
43 import androidx.core.view.GravityCompat;
44 import androidx.drawerlayout.widget.DrawerLayout;
45 import androidx.fragment.app.Fragment;
46 import androidx.fragment.app.FragmentManager;
47 import androidx.fragment.app.FragmentPagerAdapter;
48 import androidx.recyclerview.widget.LinearLayoutManager;
49 import androidx.recyclerview.widget.RecyclerView;
50 import androidx.viewpager.widget.ViewPager;
51
52 import com.google.android.material.floatingactionbutton.FloatingActionButton;
53 import com.google.android.material.snackbar.Snackbar;
54
55 import net.ktnx.mobileledger.R;
56 import net.ktnx.mobileledger.async.DbOpQueue;
57 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
58 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
59 import net.ktnx.mobileledger.model.Data;
60 import net.ktnx.mobileledger.model.LedgerAccount;
61 import net.ktnx.mobileledger.model.MobileLedgerProfile;
62 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryAdapter;
63 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
64 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryViewModel;
65 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
66 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
67 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
68 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
69 import net.ktnx.mobileledger.utils.Colors;
70 import net.ktnx.mobileledger.utils.GetOptCallback;
71 import net.ktnx.mobileledger.utils.LockHolder;
72 import net.ktnx.mobileledger.utils.MLDB;
73
74 import org.jetbrains.annotations.NotNull;
75
76 import java.text.DateFormat;
77 import java.util.ArrayList;
78 import java.util.Date;
79 import java.util.List;
80 import java.util.Locale;
81
82 import static net.ktnx.mobileledger.utils.Logger.debug;
83
84 /*
85  * TODO: reports
86  *  */
87
88 public class MainActivity extends ProfileThemedActivity {
89     public static final String STATE_CURRENT_PAGE = "current_page";
90     public static final String BUNDLE_SAVED_STATE = "bundle_savedState";
91     public static final String STATE_ACC_FILTER = "account_filter";
92     private static final String PREF_THEME_ID = "themeId";
93     public AccountSummaryFragment mAccountSummaryFragment;
94     DrawerLayout drawer;
95     private View profileListHeadMore, profileListHeadCancel, profileListHeadAddProfile;
96     private View bTransactionListCancelDownload;
97     private SectionsPagerAdapter mSectionsPagerAdapter;
98     private ViewPager mViewPager;
99     private FloatingActionButton fab;
100     private ProfilesRecyclerViewAdapter mProfileListAdapter;
101     private int mCurrentPage;
102     private boolean mBackMeansToAccountList = false;
103     private Toolbar mToolbar;
104     private DrawerLayout.SimpleDrawerListener drawerListener;
105     private ActionBarDrawerToggle barDrawerToggle;
106     private ViewPager.SimpleOnPageChangeListener pageChangeListener;
107     private MobileLedgerProfile profile;
108     @Override
109     protected void onStart() {
110         super.onStart();
111
112         mViewPager.setCurrentItem(mCurrentPage, false);
113     }
114     @Override
115     protected void onSaveInstanceState(@NotNull Bundle outState) {
116         super.onSaveInstanceState(outState);
117         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
118         if (Data.accountFilter.getValue() != null)
119             outState.putString(STATE_ACC_FILTER, Data.accountFilter.getValue());
120     }
121     @Override
122     protected void onDestroy() {
123         mSectionsPagerAdapter = null;
124         RecyclerView root = findViewById(R.id.nav_profile_list);
125         if (root != null)
126             root.setAdapter(null);
127         if (drawer != null)
128             drawer.removeDrawerListener(drawerListener);
129         drawerListener = null;
130         if (drawer != null)
131             drawer.removeDrawerListener(barDrawerToggle);
132         barDrawerToggle = null;
133         if (mViewPager != null)
134             mViewPager.removeOnPageChangeListener(pageChangeListener);
135         pageChangeListener = null;
136         super.onDestroy();
137     }
138     @Override
139     protected void setupProfileColors() {
140         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
141         int profileColor = prefs.getInt(PREF_THEME_ID, -2);
142         if (profileColor == -2)
143             profileColor = Data.retrieveCurrentThemeIdFromDb();
144         Colors.setupTheme(this, profileColor);
145         Colors.profileThemeId = profileColor;
146         storeThemeIdInPrefs(profileColor);
147     }
148     @Override
149     protected void onResume() {
150         super.onResume();
151         fabShouldShow();
152     }
153     @Override
154     protected void onCreate(Bundle savedInstanceState) {
155         super.onCreate(savedInstanceState);
156         debug("flow", "MainActivity.onCreate()");
157         setContentView(R.layout.activity_main);
158
159         fab = findViewById(R.id.btn_add_transaction);
160         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
161         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
162         LinearLayout profileListHeadMoreAndCancel =
163                 findViewById(R.id.nav_profile_list_head_buttons);
164         profileListHeadAddProfile = findViewById(R.id.nav_new_profile_button);
165         drawer = findViewById(R.id.drawer_layout);
166         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
167         mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
168         mViewPager = findViewById(R.id.root_frame);
169
170         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
171         if (extra != null && savedInstanceState == null)
172             savedInstanceState = extra;
173
174
175         mToolbar = findViewById(R.id.toolbar);
176         setSupportActionBar(mToolbar);
177
178         Data.profile.observe(this, this::onProfileChanged);
179
180         Data.profiles.observe(this, this::onProfileListChanged);
181
182         if (barDrawerToggle == null) {
183             barDrawerToggle = new ActionBarDrawerToggle(this, drawer, mToolbar,
184                     R.string.navigation_drawer_open, R.string.navigation_drawer_close);
185             drawer.addDrawerListener(barDrawerToggle);
186         }
187         barDrawerToggle.syncState();
188
189         try {
190             PackageInfo pi = getApplicationContext().getPackageManager()
191                                                     .getPackageInfo(getPackageName(), 0);
192             ((TextView) findViewById(R.id.nav_upper).findViewById(
193                     R.id.drawer_version_text)).setText(pi.versionName);
194             ((TextView) findViewById(R.id.no_profiles_layout).findViewById(
195                     R.id.drawer_version_text)).setText(pi.versionName);
196         }
197         catch (Exception e) {
198             e.printStackTrace();
199         }
200
201         markDrawerItemCurrent(R.id.nav_account_summary);
202
203         mViewPager.setAdapter(mSectionsPagerAdapter);
204
205         if (pageChangeListener == null) {
206             pageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
207                 @Override
208                 public void onPageSelected(int position) {
209                     mCurrentPage = position;
210                     switch (position) {
211                         case 0:
212                             markDrawerItemCurrent(R.id.nav_account_summary);
213                             break;
214                         case 1:
215                             markDrawerItemCurrent(R.id.nav_latest_transactions);
216                             break;
217                         default:
218                             Log.e("MainActivity",
219                                     String.format("Unexpected page index %d", position));
220                     }
221
222                     super.onPageSelected(position);
223                 }
224             };
225             mViewPager.addOnPageChangeListener(pageChangeListener);
226         }
227
228         mCurrentPage = 0;
229         if (savedInstanceState != null) {
230             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
231             if (currentPage != -1) {
232                 mCurrentPage = currentPage;
233             }
234             Data.accountFilter.setValue(savedInstanceState.getString(STATE_ACC_FILTER, null));
235         }
236
237         Data.lastUpdateDate.observe(this, this::updateLastUpdateDisplay);
238
239         findViewById(R.id.btn_no_profiles_add).setOnClickListener(
240                 v -> startEditProfileActivity(null));
241
242         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
243
244         findViewById(R.id.nav_new_profile_button).setOnClickListener(
245                 v -> startEditProfileActivity(null));
246
247         RecyclerView root = findViewById(R.id.nav_profile_list);
248         if (root == null)
249             throw new RuntimeException("Can't get hold on the transaction value view");
250
251         if (mProfileListAdapter == null)
252             mProfileListAdapter = new ProfilesRecyclerViewAdapter();
253         root.setAdapter(mProfileListAdapter);
254
255         mProfileListAdapter.editingProfiles.observe(this, newValue -> {
256             if (newValue) {
257                 profileListHeadMore.setVisibility(View.GONE);
258                 profileListHeadCancel.setVisibility(View.VISIBLE);
259                 profileListHeadAddProfile.setVisibility(View.VISIBLE);
260                 if (drawer.isDrawerOpen(GravityCompat.START)) {
261                     profileListHeadMore.startAnimation(
262                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
263                     profileListHeadCancel.startAnimation(
264                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
265                     profileListHeadAddProfile.startAnimation(
266                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
267                 }
268             }
269             else {
270                 profileListHeadCancel.setVisibility(View.GONE);
271                 profileListHeadMore.setVisibility(View.VISIBLE);
272                 profileListHeadAddProfile.setVisibility(View.GONE);
273                 if (drawer.isDrawerOpen(GravityCompat.START)) {
274                     profileListHeadCancel.startAnimation(
275                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
276                     profileListHeadMore.startAnimation(
277                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in));
278                     profileListHeadAddProfile.startAnimation(
279                             AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out));
280                 }
281             }
282
283             mProfileListAdapter.notifyDataSetChanged();
284         });
285
286         LinearLayoutManager llm = new LinearLayoutManager(this);
287
288         llm.setOrientation(RecyclerView.VERTICAL);
289         root.setLayoutManager(llm);
290
291         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
292         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
293         profileListHeadMoreAndCancel.setOnClickListener(
294                 (v) -> mProfileListAdapter.flipEditingProfiles());
295         if (drawerListener == null) {
296             drawerListener = new DrawerLayout.SimpleDrawerListener() {
297                 @Override
298                 public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
299                     if (slideOffset > 0.2)
300                         fabHide();
301                 }
302                 @Override
303                 public void onDrawerClosed(View drawerView) {
304                     super.onDrawerClosed(drawerView);
305                     mProfileListAdapter.setAnimationsEnabled(false);
306                     mProfileListAdapter.editingProfiles.setValue(false);
307                     Data.drawerOpen.setValue(false);
308                     fabShouldShow();
309                 }
310                 @Override
311                 public void onDrawerOpened(View drawerView) {
312                     super.onDrawerOpened(drawerView);
313                     mProfileListAdapter.setAnimationsEnabled(true);
314                     Data.drawerOpen.setValue(true);
315                     fabHide();
316                 }
317             };
318             drawer.addDrawerListener(drawerListener);
319         }
320
321         Data.drawerOpen.observe(this, open -> {
322             if (open)
323                 drawer.open();
324             else
325                 drawer.close();
326         });
327     }
328     private void scheduleDataRetrievalIfStale(Date lastUpdate) {
329         long now = new Date().getTime();
330         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
331             if (lastUpdate == null)
332                 debug("db::", "WEB data never fetched. scheduling a fetch");
333             else
334                 debug("db", String.format(Locale.ENGLISH,
335                         "WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
336                         lastUpdate.getTime() / 1000f, now / 1000f));
337
338             Data.scheduleTransactionListRetrieval(this);
339         }
340     }
341     private void createShortcuts(List<MobileLedgerProfile> list) {
342         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1)
343             return;
344
345         ShortcutManager sm = getSystemService(ShortcutManager.class);
346         List<ShortcutInfo> shortcuts = new ArrayList<>();
347         int i = 0;
348         for (MobileLedgerProfile p : list) {
349             if (shortcuts.size() >= sm.getMaxShortcutCountPerActivity())
350                 break;
351
352             if (!p.isPostingPermitted())
353                 continue;
354
355             ShortcutInfo si =
356                     new ShortcutInfo.Builder(this, "new_transaction_" + p.getUuid()).setShortLabel(
357                             p.getName())
358                                                                                     .setIcon(
359                                                                                             Icon.createWithResource(
360                                                                                                     this,
361                                                                                                     R.drawable.svg_thick_plus_white))
362                                                                                     .setIntent(
363                                                                                             new Intent(
364                                                                                                     Intent.ACTION_VIEW,
365                                                                                                     null,
366                                                                                                     this,
367                                                                                                     NewTransactionActivity.class).putExtra(
368                                                                                                     "profile_uuid",
369                                                                                                     p.getUuid()))
370                                                                                     .setRank(i)
371                                                                                     .build();
372             shortcuts.add(si);
373             i++;
374         }
375         sm.setDynamicShortcuts(shortcuts);
376     }
377     private void onProfileListChanged(List<MobileLedgerProfile> newList) {
378         if (newList == null) {
379             // profiles not yet loaded from DB
380             findViewById(R.id.loading_layout).setVisibility(View.VISIBLE);
381             findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
382             findViewById(R.id.main_app_layout).setVisibility(View.GONE);
383             return;
384         }
385
386         if (newList.isEmpty()) {
387             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
388             findViewById(R.id.main_app_layout).setVisibility(View.GONE);
389             findViewById(R.id.loading_layout).setVisibility(View.GONE);
390             return;
391         }
392
393         findViewById(R.id.main_app_layout).setVisibility(View.VISIBLE);
394         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
395         findViewById(R.id.loading_layout).setVisibility(View.GONE);
396
397         findViewById(R.id.nav_profile_list).setMinimumHeight(
398                 (int) (getResources().getDimension(R.dimen.thumb_row_height) * newList.size()));
399
400         debug("profiles", "profile list changed");
401         mProfileListAdapter.notifyDataSetChanged();
402
403         createShortcuts(newList);
404     }
405     /**
406      * called when the current profile has changed
407      */
408     private void onProfileChanged(MobileLedgerProfile profile) {
409         boolean haveProfile = profile != null;
410
411         if (haveProfile)
412             setTitle(profile.getName());
413         else
414             setTitle(R.string.app_name);
415
416         this.profile = profile;
417
418         int newProfileTheme = haveProfile ? profile.getThemeHue() : -1;
419         if (newProfileTheme != Colors.profileThemeId) {
420             debug("profiles",
421                     String.format(Locale.ENGLISH, "profile theme %d → %d", Colors.profileThemeId,
422                             newProfileTheme));
423             Colors.profileThemeId = newProfileTheme;
424             profileThemeChanged();
425             // profileThemeChanged would restart the activity, so no need to reload the
426             // data sets below
427             return;
428         }
429
430         findViewById(R.id.no_profiles_layout).setVisibility(haveProfile ? View.GONE : View.VISIBLE);
431         findViewById(R.id.pager_layout).setVisibility(haveProfile ? View.VISIBLE : View.VISIBLE);
432
433         mProfileListAdapter.notifyDataSetChanged();
434
435         Data.transactions.clear();
436         debug("transactions", "requesting list reload");
437         TransactionListViewModel.scheduleTransactionListReload();
438
439         Data.accounts.clear();
440         AccountSummaryViewModel.scheduleAccountListReload();
441
442         if (haveProfile) {
443             if (profile.isPostingPermitted()) {
444                 mToolbar.setSubtitle(null);
445                 fab.show();
446             }
447             else {
448                 mToolbar.setSubtitle(R.string.profile_subtitle_read_only);
449                 fab.hide();
450             }
451         }
452         else {
453             mToolbar.setSubtitle(null);
454             fab.hide();
455         }
456
457         updateLastUpdateTextFromDB();
458     }
459     private void updateLastUpdateDisplay(Date newValue) {
460         LinearLayout l = findViewById(R.id.transactions_last_update_layout);
461         TextView v = findViewById(R.id.transactions_last_update);
462         if (newValue == null) {
463             l.setVisibility(View.INVISIBLE);
464             debug("main", "no last update date :(");
465         }
466         else {
467             final String text = DateFormat.getDateTimeInstance()
468                                           .format(newValue);
469             v.setText(text);
470             l.setVisibility(View.VISIBLE);
471             debug("main", String.format("Date formatted: %s", text));
472         }
473
474         scheduleDataRetrievalIfStale(newValue);
475     }
476     private void profileThemeChanged() {
477         storeThemeIdInPrefs(profile.getThemeHue());
478
479         // un-hook all observed LiveData
480         Data.profile.removeObservers(this);
481         Data.profiles.removeObservers(this);
482         Data.lastUpdateDate.removeObservers(this);
483
484         recreate();
485     }
486     private void storeThemeIdInPrefs(int themeId) {
487         // store the new theme id in the preferences
488         SharedPreferences prefs = getPreferences(MODE_PRIVATE);
489         SharedPreferences.Editor e = prefs.edit();
490         e.putInt(PREF_THEME_ID, themeId);
491         e.apply();
492     }
493     public void startEditProfileActivity(MobileLedgerProfile profile) {
494         Intent intent = new Intent(this, ProfileDetailActivity.class);
495         Bundle args = new Bundle();
496         if (profile != null) {
497             int index = Data.getProfileIndex(profile);
498             if (index != -1)
499                 intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
500         }
501         intent.putExtras(args);
502         startActivity(intent, args);
503     }
504     private void setupProfile() {
505         MLDB.getOption(MLDB.OPT_PROFILE_UUID, null, new GetOptCallback() {
506             @Override
507             protected void onResult(String profileUUID) {
508                 MobileLedgerProfile startupProfile;
509
510                 startupProfile = Data.getProfile(profileUUID);
511                 Data.setCurrentProfile(startupProfile);
512             }
513         });
514     }
515     public void fabNewTransactionClicked(View view) {
516         Intent intent = new Intent(this, NewTransactionActivity.class);
517         startActivity(intent);
518         overridePendingTransition(R.anim.slide_in_up, R.anim.dummy);
519     }
520     public void markDrawerItemCurrent(int id) {
521         TextView item = drawer.findViewById(id);
522         item.setBackgroundColor(Colors.tableRowDarkBG);
523
524         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
525         for (int i = 0; i < actions.getChildCount(); i++) {
526             View view = actions.getChildAt(i);
527             if (view.getId() != id) {
528                 view.setBackgroundColor(Color.TRANSPARENT);
529             }
530         }
531     }
532     public void onAccountSummaryClicked(View view) {
533         drawer.closeDrawers();
534
535         showAccountSummaryFragment();
536     }
537     private void showAccountSummaryFragment() {
538         mViewPager.setCurrentItem(0, true);
539         Data.accountFilter.setValue(null);
540     }
541     public void onLatestTransactionsClicked(View view) {
542         drawer.closeDrawers();
543
544         showTransactionsFragment((String) null);
545     }
546     private void showTransactionsFragment(String accName) {
547         Data.accountFilter.setValue(accName);
548         mViewPager.setCurrentItem(1, true);
549     }
550     private void showTransactionsFragment(LedgerAccount account) {
551         showTransactionsFragment((account == null) ? null : account.getName());
552     }
553     public void showAccountTransactions(LedgerAccount account) {
554         mBackMeansToAccountList = true;
555         showTransactionsFragment(account);
556     }
557     @Override
558     public void onBackPressed() {
559         DrawerLayout drawer = findViewById(R.id.drawer_layout);
560         if (drawer.isDrawerOpen(GravityCompat.START)) {
561             drawer.closeDrawer(GravityCompat.START);
562         }
563         else {
564             if (mBackMeansToAccountList && (mViewPager.getCurrentItem() == 1)) {
565                 Data.accountFilter.setValue(null);
566                 showAccountSummaryFragment();
567                 mBackMeansToAccountList = false;
568             }
569             else {
570                 debug("fragments", String.format(Locale.ENGLISH, "manager stack: %d",
571                         getSupportFragmentManager().getBackStackEntryCount()));
572
573                 super.onBackPressed();
574             }
575         }
576     }
577     public void updateLastUpdateTextFromDB() {
578         if (profile == null)
579             return;
580
581         long last_update = profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L);
582
583         debug("transactions", String.format(Locale.ENGLISH, "Last update = %d", last_update));
584         if (last_update == 0) {
585             Data.lastUpdateDate.postValue(null);
586         }
587         else {
588             Data.lastUpdateDate.postValue(new Date(last_update));
589         }
590     }
591     public void onStopTransactionRefreshClick(View view) {
592         debug("interactive", "Cancelling transactions refresh");
593         Data.stopTransactionsRetrieval();
594         bTransactionListCancelDownload.setEnabled(false);
595     }
596     public void onRetrieveDone(String error) {
597         Data.transactionRetrievalDone();
598         findViewById(R.id.transaction_progress_layout).setVisibility(View.GONE);
599
600         if (error == null) {
601             updateLastUpdateTextFromDB();
602
603             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
604             TransactionListViewModel.scheduleTransactionListReload();
605         }
606         else
607             Snackbar.make(mViewPager, error, Snackbar.LENGTH_LONG)
608                     .show();
609     }
610     public void onRetrieveStart() {
611         ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
612         bTransactionListCancelDownload.setEnabled(true);
613         ColorStateList csl = Colors.getColorStateList();
614         progressBar.setIndeterminateTintList(csl);
615         progressBar.setProgressTintList(csl);
616         progressBar.setIndeterminate(true);
617         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
618             progressBar.setProgress(0, false);
619         else
620             progressBar.setProgress(0);
621         findViewById(R.id.transaction_progress_layout).setVisibility(View.VISIBLE);
622     }
623     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
624         ProgressBar progressBar = findViewById(R.id.transaction_list_progress_bar);
625         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
626             (progress.getTotal() == 0))
627         {
628             progressBar.setIndeterminate(true);
629         }
630         else {
631             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
632                 progressBar.setMin(0);
633             }
634             progressBar.setMax(progress.getTotal());
635             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
636                 progressBar.setProgress(progress.getProgress(), true);
637             }
638             else
639                 progressBar.setProgress(progress.getProgress());
640             progressBar.setIndeterminate(false);
641         }
642     }
643     public void fabShouldShow() {
644         if ((profile != null) && profile.isPostingPermitted() && !drawer.isOpen())
645             fab.show();
646         else
647             fabHide();
648     }
649     public void fabHide() {
650         fab.hide();
651     }
652     public void onAccountSummaryRowViewClicked(View view) {
653         ViewGroup row;
654         switch (view.getId()) {
655             case R.id.account_expander:
656                 row = (ViewGroup) view.getParent()
657                                       .getParent()
658                                       .getParent();
659                 break;
660             case R.id.account_expander_container:
661             case R.id.account_row_acc_name:
662                 row = (ViewGroup) view.getParent()
663                                       .getParent();
664                 break;
665             default:
666                 row = (ViewGroup) view.getParent();
667                 break;
668         }
669
670         LedgerAccount acc = (LedgerAccount) row.getTag();
671         switch (view.getId()) {
672             case R.id.account_row_acc_name:
673             case R.id.account_expander:
674             case R.id.account_expander_container:
675                 debug("accounts", "Account expander clicked");
676                 if (!acc.hasSubAccounts())
677                     return;
678
679                 boolean wasExpanded = acc.isExpanded();
680
681                 View arrow = row.findViewById(R.id.account_expander_container);
682
683                 arrow.clearAnimation();
684                 ViewPropertyAnimator animator = arrow.animate();
685
686                 acc.toggleExpanded();
687                 DbOpQueue.add("update accounts set expanded=? where name=? and profile=?",
688                         new Object[]{acc.isExpanded(), acc.getName(), profile.getUuid()
689                         });
690
691                 if (wasExpanded) {
692                     debug("accounts", String.format("Collapsing account '%s'", acc.getName()));
693                     arrow.setRotation(0);
694                     animator.rotationBy(180);
695
696                     // removing all child accounts from the view
697                     int start = -1, count = 0;
698                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
699                         for (int i = 0; i < Data.accounts.size(); i++) {
700                             if (acc.isParentOf(Data.accounts.get(i))) {
701 //                                debug("accounts", String.format("Found a child '%s' at position
702 //                                %d",
703 //                                        Data.accounts.get(i).getName(), i));
704                                 if (start == -1) {
705                                     start = i;
706                                 }
707                                 count++;
708                             }
709                             else {
710                                 if (start != -1) {
711 //                                    debug("accounts",
712 //                                            String.format("Found a non-child '%s' at position %d",
713 //                                                    Data.accounts.get(i).getName(), i));
714                                     break;
715                                 }
716                             }
717                         }
718
719                         if (start != -1) {
720                             for (int j = 0; j < count; j++) {
721 //                                debug("accounts", String.format("Removing item %d: %s", start + j,
722 //                                        Data.accounts.get(start).getName()));
723                                 Data.accounts.removeQuietly(start);
724                             }
725
726                             mAccountSummaryFragment.modelAdapter.notifyItemRangeRemoved(start,
727                                     count);
728                         }
729                     }
730                 }
731                 else {
732                     debug("accounts", String.format("Expanding account '%s'", acc.getName()));
733                     arrow.setRotation(180);
734                     animator.rotationBy(-180);
735                     List<LedgerAccount> children = profile.loadVisibleChildAccountsOf(acc);
736                     try (LockHolder ignored = Data.accounts.lockForWriting()) {
737                         int parentPos = Data.accounts.indexOf(acc);
738                         if (parentPos != -1) {
739                             // may have disappeared in a concurrent refresh operation
740                             Data.accounts.addAllQuietly(parentPos + 1, children);
741                             mAccountSummaryFragment.modelAdapter.notifyItemRangeInserted(
742                                     parentPos + 1, children.size());
743                         }
744                     }
745                 }
746                 break;
747             case R.id.account_row_acc_amounts:
748                 if (acc.getAmountCount() > AccountSummaryAdapter.AMOUNT_LIMIT) {
749                     acc.toggleAmountsExpanded();
750                     DbOpQueue.add(
751                             "update accounts set amounts_expanded=? where name=? and profile=?",
752                             new Object[]{acc.amountsExpanded(), acc.getName(), profile.getUuid()
753                             });
754                     Data.accounts.triggerItemChangedNotification(acc);
755                 }
756                 break;
757         }
758     }
759
760     public class SectionsPagerAdapter extends FragmentPagerAdapter {
761
762         SectionsPagerAdapter(FragmentManager fm) {
763             super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
764         }
765
766         @NotNull
767         @Override
768         public Fragment getItem(int position) {
769             debug("main", String.format(Locale.ENGLISH, "Switching to fragment %d", position));
770             switch (position) {
771                 case 0:
772 //                    debug("flow", "Creating account summary fragment");
773                     return mAccountSummaryFragment = new AccountSummaryFragment();
774                 case 1:
775                     return new TransactionListFragment();
776                 default:
777                     throw new IllegalStateException(
778                             String.format("Unexpected fragment index: " + "%d", position));
779             }
780         }
781
782         @Override
783         public int getCount() {
784             return 2;
785         }
786     }
787 }