app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionItemsAdapter.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.database.Cursor;
  21 import android.view.LayoutInflater;
  22 import android.view.ViewGroup;
  23 import android.widget.LinearLayout;
  24
  25 import androidx.annotation.NonNull;
  26 import androidx.recyclerview.widget.RecyclerView;
  27
  28 import net.ktnx.mobileledger.App;
  29 import net.ktnx.mobileledger.R;
  30 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  31 import net.ktnx.mobileledger.model.Data;
  32 import net.ktnx.mobileledger.model.LedgerTransaction;
  33 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  34 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  35 import net.ktnx.mobileledger.utils.Logger;
  36
  37 import java.util.ArrayList;
  38 import java.util.Locale;
  39
  40 import static net.ktnx.mobileledger.utils.Logger.debug;
  41
  42 class NewTransactionItemsAdapter extends RecyclerView.Adapter<NewTransactionItemHolder>
  43         implements DescriptionSelectedCallback {
  44     NewTransactionModel model;
  45     private MobileLedgerProfile mProfile;
  46     NewTransactionItemsAdapter(NewTransactionModel viewModel, MobileLedgerProfile profile) {
  47         super();
  48         model = viewModel;
  49         mProfile = profile;
  50         int size = model.getAccountCount();
  51         while (size < 2) {
  52             Logger.debug("new-transaction",
  53                     String.format(Locale.US, "%d accounts is too little, Calling addRow()", size));
  54             size = addRow();
  55         }
  56     }
  57     public void setProfile(MobileLedgerProfile profile) {
  58         mProfile = profile;
  59     }
  60     int addRow() {
  61         final int newAccountCount = model.addAccount(new LedgerTransactionAccount(""));
  62         Logger.debug("new-transaction",
  63                 String.format(Locale.US, "invoking notifyItemInserted(%d)", newAccountCount));
  64         // the header is at position 0
  65         notifyItemInserted(newAccountCount);
  66         model.sendCountNotifications(); // needed after holders' positions have changed
  67         return newAccountCount;
  68     }
  69     @NonNull
  70     @Override
  71     public NewTransactionItemHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
  72         LinearLayout row = (LinearLayout) LayoutInflater.from(parent.getContext())
  73                                                         .inflate(R.layout.new_transaction_row,
  74                                                                 parent, false);
  75         return new NewTransactionItemHolder(row, this);
  76     }
  77     @Override
  78     public void onBindViewHolder(@NonNull NewTransactionItemHolder holder, int position) {
  79         Logger.debug("bind", String.format(Locale.US, "Binding item at position %d", position));
  80         NewTransactionModel.Item item = model.getItem(position);
  81         holder.setData(item);
  82         Logger.debug("bind", String.format(Locale.US, "Bound %s item at position %d", item.getType()
  83                                                                                           .toString(),
  84                 position));
  85     }
  86     @Override
  87     public int getItemCount() {
  88         return model.getAccountCount() + 2;
  89     }
  90     boolean accountListIsEmpty() {
  91         for (int i = 0; i < model.getAccountCount(); i++) {
  92             LedgerTransactionAccount acc = model.getAccount(i);
  93             if (!acc.getAccountName()
  94                     .isEmpty())
  95                 return false;
  96             if (acc.isAmountSet())
  97                 return false;
  98         }
  99
 100         return true;
 101     }
 102     public void descriptionSelected(String description) {
 103         debug("descr selected", description);
 104         if (!accountListIsEmpty())
 105             return;
 106
 107         String accFilter = mProfile.getPreferredAccountsFilter();
 108
 109         ArrayList<String> params = new ArrayList<>();
 110         StringBuilder sb = new StringBuilder(
 111                 "select t.profile, t.id from transactions t where t.description=?");
 112         params.add(description);
 113
 114         if (accFilter != null) {
 115             sb.append(" AND EXISTS (")
 116               .append("SELECT 1 FROM transaction_accounts ta ")
 117               .append("WHERE ta.profile = t.profile")
 118               .append(" AND ta.transaction_id = t.id")
 119               .append(" AND UPPER(ta.account_name) LIKE '%'||?||'%')");
 120             params.add(accFilter.toUpperCase());
 121         }
 122
 123         sb.append(" ORDER BY date desc limit 1");
 124
 125         final String sql = sb.toString();
 126         debug("descr", sql);
 127         debug("descr", params.toString());
 128
 129         try (Cursor c = App.getDatabase()
 130                            .rawQuery(sql, params.toArray(new String[]{})))
 131         {
 132             if (!c.moveToNext())
 133                 return;
 134
 135             String profileUUID = c.getString(0);
 136             int transactionId = c.getInt(1);
 137             LedgerTransaction tr;
 138             MobileLedgerProfile profile = Data.getProfile(profileUUID);
 139             if (profile == null)
 140                 throw new RuntimeException(String.format(
 141                         "Unable to find profile %s, which is supposed to contain " +
 142                         "transaction %d with description %s", profileUUID, transactionId,
 143                         description));
 144
 145             tr = profile.loadTransaction(transactionId);
 146             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 147             NewTransactionModel.Item firstNegative = null;
 148             boolean singleNegative = false;
 149             int negativeCount = 0;
 150             for (int i = 0; i < accounts.size(); i++) {
 151                 LedgerTransactionAccount acc = accounts.get(i);
 152                 NewTransactionModel.Item item;
 153                 if (model.getAccountCount() < i + 1) {
 154                     model.addAccount(acc);
 155                     notifyItemInserted(i + 1);
 156                 }
 157                 item = model.getItem(i + 1);
 158
 159                 item.getAccount()
 160                     .setAccountName(acc.getAccountName());
 161                 if (acc.isAmountSet()) {
 162                     item.getAccount()
 163                         .setAmount(acc.getAmount());
 164                     if (acc.getAmount() < 0) {
 165                         if (firstNegative == null) {
 166                             firstNegative = item;
 167                             singleNegative = true;
 168                         }
 169                         else
 170                             singleNegative = false;
 171                     }
 172                 }
 173                 else
 174                     item.getAccount()
 175                         .resetAmount();
 176                 notifyItemChanged(i + 1);
 177             }
 178
 179             if (singleNegative) {
 180                 firstNegative.getAccount()
 181                              .resetAmount();
 182             }
 183         }
 184         model.checkTransactionSubmittable(this);
 185         model.setFocusedItem(1);
 186     }
 187     public void toggleAllEditing(boolean editable) {
 188         // item 0 is the header
 189         for (int i = 0; i <= model.getAccountCount(); i++) {
 190             model.getItem(i)
 191                  .setEditable(editable);
 192             notifyItemChanged(i);
 193             // TODO perhaps do only one notification about the whole range (notifyDatasetChanged)?
 194         }
 195     }
 196     public void reset() {
 197         int presentItemCount = model.getAccountCount();
 198         model.reset();
 199         notifyItemChanged(0);       // header changed
 200         notifyItemRangeChanged(1, 2);    // the two empty rows
 201         if (presentItemCount > 2)
 202             notifyItemRangeRemoved(3, presentItemCount - 2); // all the rest are gone
 203     }
 204 }