app/src/main/java/net/ktnx/mobileledger/TransactionListAdapter.java

   1 /*
   2  * Copyright © 2018 Damyan Ivanov.
   3  * This file is part of Mobile-Ledger.
   4  * Mobile-Ledger 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  * Mobile-Ledger 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 Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger;
  19
  20 import android.content.Context;
  21 import android.database.sqlite.SQLiteDatabase;
  22 import android.support.annotation.NonNull;
  23 import android.support.constraint.ConstraintLayout;
  24 import android.support.v7.widget.AppCompatTextView;
  25 import android.support.v7.widget.RecyclerView;
  26 import android.util.Log;
  27 import android.view.Gravity;
  28 import android.view.LayoutInflater;
  29 import android.view.View;
  30 import android.view.ViewGroup;
  31 import android.widget.LinearLayout;
  32 import android.widget.TextView;
  33
  34 import net.ktnx.mobileledger.model.LedgerTransaction;
  35 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  36 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  37 import net.ktnx.mobileledger.utils.Globals;
  38 import net.ktnx.mobileledger.utils.MLDB;
  39
  40 import static net.ktnx.mobileledger.utils.DimensionUtils.dp2px;
  41
  42 class TransactionListAdapter
  43         extends RecyclerView.Adapter<TransactionListAdapter.TransactionRowHolder> {
  44     TransactionListViewModel model;
  45     public TransactionListAdapter(TransactionListViewModel model) {
  46         this.model = model;
  47     }
  48     public void onBindViewHolder(@NonNull TransactionRowHolder holder, int position) {
  49         LedgerTransaction tr = model.getTransaction(position);
  50         // in a race when transaction list is reduced, but the model hasn't been notified yet
  51         // the view will disappear when the notifications reaches the model, so by simply omitting
  52         // the out-of-range get() call nothing bad happens - just a to-be-deleted view remains
  53         // a bit longer
  54         if (tr == null) return;
  55
  56         Context ctx = holder.row.getContext();
  57
  58         try (SQLiteDatabase db = MLDB.getReadableDatabase(ctx)) {
  59             tr.loadData(db);
  60             holder.tvDescription.setText(tr.getDescription());
  61             holder.tvDate.setText(tr.getDate());
  62
  63             int rowIndex = 0;
  64             for (LedgerTransactionAccount acc : tr.getAccounts()) {
  65                 LinearLayout row = (LinearLayout) holder.tableAccounts.getChildAt(rowIndex++);
  66                 TextView accName, accAmount;
  67                 if (row == null) {
  68                     row = new LinearLayout(ctx);
  69                     row.setLayoutParams(
  70                             new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
  71                                     LinearLayout.LayoutParams.WRAP_CONTENT));
  72                     row.setGravity(Gravity.CENTER_VERTICAL);
  73                     row.setOrientation(LinearLayout.HORIZONTAL);
  74                     row.setPaddingRelative(dp2px(ctx, 8), 0, 0, 0);
  75                     accName = new AppCompatTextView(ctx);
  76                     accName.setLayoutParams(new LinearLayout.LayoutParams(0,
  77                                     LinearLayout.LayoutParams.WRAP_CONTENT, 5f));
  78                     accName.setTextAlignment(View.TEXT_ALIGNMENT_VIEW_START);
  79                     row.addView(accName);
  80                     accAmount = new AppCompatTextView(ctx);
  81                     LinearLayout.LayoutParams llp =
  82                             new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
  83                                     LinearLayout.LayoutParams.WRAP_CONTENT);
  84                     llp.setMarginEnd(0);
  85                     accAmount.setLayoutParams(llp);
  86                     accAmount.setTextAlignment(View.TEXT_ALIGNMENT_VIEW_END);
  87                     accAmount.setMinWidth(dp2px(ctx, 60));
  88                     row.addView(accAmount);
  89                     holder.tableAccounts.addView(row);
  90                 }
  91                 else {
  92                     accName = (TextView) row.getChildAt(0);
  93                     accAmount = (TextView) row.getChildAt(1);
  94                 }
  95                 accName.setText(acc.getAccountName());
  96                 accAmount.setText(acc.toString());
  97             }
  98             if (holder.tableAccounts.getChildCount() > rowIndex) {
  99                 holder.tableAccounts
 100                         .removeViews(rowIndex, holder.tableAccounts.getChildCount() - rowIndex);
 101             }
 102
 103             if (position % 2 == 0) {
 104                 holder.row.setBackgroundColor(Globals.table_row_even_bg);
 105             }
 106             else {
 107                 holder.row.setBackgroundColor(Globals.table_row_odd_bg);
 108             }
 109
 110             Log.d("transactions", String.format("Filled position %d", position));
 111         }
 112     }
 113
 114     @NonNull
 115     @Override
 116     public TransactionRowHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
 117         Log.d("perf", "onCreateViewHolder called");
 118         View row = LayoutInflater.from(parent.getContext())
 119                 .inflate(R.layout.transaction_list_row, parent, false);
 120         return new TransactionRowHolder(row);
 121     }
 122
 123     @Override
 124     public int getItemCount()
 125     {
 126         return model.getTransactionCount();
 127     }
 128     class TransactionRowHolder extends RecyclerView.ViewHolder {
 129         TextView tvDescription, tvDate;
 130         LinearLayout tableAccounts;
 131         ConstraintLayout row;
 132         public TransactionRowHolder(@NonNull View itemView) {
 133             super(itemView);
 134             this.row = itemView.findViewById(R.id.transaction_row);
 135             this.tvDescription = itemView.findViewById(R.id.transaction_row_description);
 136             this.tvDate = itemView.findViewById(R.id.transaction_row_date);
 137             this.tableAccounts = itemView.findViewById(R.id.transaction_row_acc_amounts);
 138         }
 139     }
 140 }