app/src/main/java/net/ktnx/mobileledger/ui/account_summary/AccountSummaryFragment.java

   1 /*
   2  * Copyright © 2024 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.account_summary;
  19
  20 import static net.ktnx.mobileledger.utils.Logger.debug;
  21
  22 import android.content.Context;
  23 import android.os.Bundle;
  24 import android.view.LayoutInflater;
  25 import android.view.Menu;
  26 import android.view.MenuInflater;
  27 import android.view.MenuItem;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30
  31 import androidx.annotation.NonNull;
  32 import androidx.annotation.Nullable;
  33 import androidx.lifecycle.ViewModelProvider;
  34 import androidx.recyclerview.widget.DividerItemDecoration;
  35 import androidx.recyclerview.widget.LinearLayoutManager;
  36 import androidx.recyclerview.widget.RecyclerView;
  37 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
  38
  39 import net.ktnx.mobileledger.App;
  40 import net.ktnx.mobileledger.R;
  41 import net.ktnx.mobileledger.async.GeneralBackgroundTasks;
  42 import net.ktnx.mobileledger.databinding.AccountSummaryFragmentBinding;
  43 import net.ktnx.mobileledger.db.AccountWithAmounts;
  44 import net.ktnx.mobileledger.db.DB;
  45 import net.ktnx.mobileledger.db.Profile;
  46 import net.ktnx.mobileledger.model.AccountListItem;
  47 import net.ktnx.mobileledger.model.Data;
  48 import net.ktnx.mobileledger.model.LedgerAccount;
  49 import net.ktnx.mobileledger.ui.FabManager;
  50 import net.ktnx.mobileledger.ui.MainModel;
  51 import net.ktnx.mobileledger.ui.MobileLedgerListFragment;
  52 import net.ktnx.mobileledger.ui.activity.MainActivity;
  53 import net.ktnx.mobileledger.utils.Colors;
  54
  55 import org.jetbrains.annotations.NotNull;
  56
  57 import java.util.ArrayList;
  58 import java.util.HashMap;
  59 import java.util.List;
  60
  61 public class AccountSummaryFragment extends MobileLedgerListFragment {
  62     public AccountSummaryAdapter modelAdapter;
  63     private AccountSummaryFragmentBinding b;
  64     private MenuItem menuShowZeroBalances;
  65     private MainModel model;
  66     @Override
  67     public void onCreate(@Nullable Bundle savedInstanceState) {
  68         super.onCreate(savedInstanceState);
  69         debug("flow", "AccountSummaryFragment.onCreate()");
  70         setHasOptionsMenu(true);
  71     }
  72     public void onAttach(@NotNull Context context) {
  73         super.onAttach(context);
  74         debug("flow", "AccountSummaryFragment.onAttach()");
  75     }
  76     @Override
  77     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
  78                              @Nullable Bundle savedInstanceState) {
  79         debug("flow", "AccountSummaryFragment.onCreateView()");
  80         b = AccountSummaryFragmentBinding.inflate(inflater, container, false);
  81         return b.getRoot();
  82     }
  83     @Override
  84     public SwipeRefreshLayout getRefreshLayout() {
  85         return b.accountSwipeRefreshLayout;
  86     }
  87     @Override
  88     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
  89         debug("flow", "AccountSummaryFragment.onActivityCreated()");
  90         super.onViewCreated(view, savedInstanceState);
  91
  92         model = new ViewModelProvider(requireActivity()).get(MainModel.class);
  93
  94         Data.backgroundTasksRunning.observe(this.getViewLifecycleOwner(),
  95                 this::onBackgroundTaskRunningChanged);
  96
  97         modelAdapter = new AccountSummaryAdapter();
  98         MainActivity mainActivity = getMainActivity();
  99
 100         LinearLayoutManager llm = new LinearLayoutManager(mainActivity);
 101         llm.setOrientation(RecyclerView.VERTICAL);
 102         b.accountRoot.setLayoutManager(llm);
 103         b.accountRoot.setAdapter(modelAdapter);
 104         DividerItemDecoration did =
 105                 new DividerItemDecoration(mainActivity, DividerItemDecoration.VERTICAL);
 106         b.accountRoot.addItemDecoration(did);
 107
 108         mainActivity.fabShouldShow();
 109
 110         FabManager.handle(mainActivity, b.accountRoot);
 111
 112         Colors.themeWatch.observe(getViewLifecycleOwner(), this::themeChanged);
 113         b.accountSwipeRefreshLayout.setOnRefreshListener(() -> {
 114             debug("ui", "refreshing accounts via swipe");
 115             model.scheduleTransactionListRetrieval();
 116         });
 117
 118         Data.observeProfile(this, profile -> onProfileChanged(profile, Boolean.TRUE.equals(
 119                 model.getShowZeroBalanceAccounts()
 120                      .getValue())));
 121         model.getShowZeroBalanceAccounts()
 122              .setValue(App.getShowZeroBalanceAccounts());
 123     }
 124     @Override
 125     public void onCreateOptionsMenu(@NotNull Menu menu, @NotNull MenuInflater inflater) {
 126         inflater.inflate(R.menu.account_list, menu);
 127
 128         menuShowZeroBalances = menu.findItem(R.id.menu_account_list_show_zero_balances);
 129         if ((menuShowZeroBalances == null))
 130             throw new AssertionError();
 131
 132         menuShowZeroBalances.setOnMenuItemClickListener(menuItem -> {
 133             model.getShowZeroBalanceAccounts()
 134                  .setValue(Boolean.FALSE.equals(model.getShowZeroBalanceAccounts()
 135                                                      .getValue()));
 136             return true;
 137         });
 138
 139         model.getShowZeroBalanceAccounts()
 140              .observe(this, v -> {
 141                  menuShowZeroBalances.setChecked(v);
 142                  onProfileChanged(Data.getProfile(), v);
 143                  App.storeShowZeroBalanceAccounts(v);
 144              });
 145
 146         super.onCreateOptionsMenu(menu, inflater);
 147     }
 148     private void onProfileChanged(Profile profile, boolean showZeroBalanceAccounts) {
 149         if (profile == null)
 150             return;
 151
 152         DB.get()
 153           .getAccountDAO()
 154           .getAllWithAmounts(profile.getId(), showZeroBalanceAccounts)
 155           .observe(getViewLifecycleOwner(), list -> GeneralBackgroundTasks.run(() -> {
 156               List<AccountListItem> adapterList = new ArrayList<>();
 157               adapterList.add(new AccountListItem.Header(Data.lastAccountsUpdateText));
 158               HashMap<String, LedgerAccount> accMap = new HashMap<>();
 159               for (AccountWithAmounts dbAcc : list) {
 160                   LedgerAccount parent = null;
 161                   String parentName = dbAcc.account.getParentName();
 162                   if (parentName != null)
 163                       parent = accMap.get(parentName);
 164                   if (parent != null)
 165                       parent.setHasSubAccounts(true);
 166                   final LedgerAccount account = LedgerAccount.fromDBO(dbAcc, parent);
 167                   if (account.isVisible())
 168                       adapterList.add(new AccountListItem.Account(account));
 169                   accMap.put(dbAcc.account.getName(), account);
 170               }
 171
 172               if (!showZeroBalanceAccounts) {
 173                   removeZeroAccounts(adapterList);
 174               }
 175               modelAdapter.setAccounts(adapterList);
 176               Data.lastUpdateAccountCount.postValue(adapterList.size() - 1);
 177           }));
 178     }
 179     private void removeZeroAccounts(List<AccountListItem> list) {
 180         boolean removed = true;
 181
 182         while (removed) {
 183             AccountListItem last = null;
 184             removed = false;
 185             List<AccountListItem> newList = new ArrayList<>();
 186
 187             for (AccountListItem item : list) {
 188                 if (last == null) {
 189                     last = item;
 190                     continue;
 191                 }
 192
 193                 if (!last.isAccount() || !last.toAccount()
 194                                               .allAmountsAreZero() || last.toAccount()
 195                                                                           .getAccount()
 196                                                                           .isParentOf(
 197                                                                                   item.toAccount()
 198                                                                                       .getAccount()))
 199                 {
 200                     newList.add(last);
 201                 }
 202                 else {
 203                     removed = true;
 204                 }
 205
 206                 last = item;
 207             }
 208
 209             if (last != null) {
 210                 if (!last.isAccount() || !last.toAccount()
 211                                               .allAmountsAreZero())
 212                 {
 213                     newList.add(last);
 214                 }
 215                 else {
 216                     removed = true;
 217                 }
 218             }
 219
 220             list.clear();
 221             list.addAll(newList);
 222         }
 223     }
 224 }