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