app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionRowHolder.java

   1 /*
   2  * Copyright © 2020 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.transaction_list;
  19
  20 import android.view.View;
  21 import android.widget.LinearLayout;
  22 import android.widget.TextView;
  23
  24 import androidx.annotation.NonNull;
  25 import androidx.cardview.widget.CardView;
  26 import androidx.constraintlayout.widget.ConstraintLayout;
  27 import androidx.recyclerview.widget.RecyclerView;
  28
  29 import net.ktnx.mobileledger.R;
  30 import net.ktnx.mobileledger.model.Data;
  31 import net.ktnx.mobileledger.model.TransactionListItem;
  32
  33 import java.util.Observer;
  34
  35 class TransactionRowHolder extends RecyclerView.ViewHolder {
  36     final TextView tvDescription;
  37     final TextView tvComment;
  38     final LinearLayout tableAccounts;
  39     final ConstraintLayout row;
  40     final ConstraintLayout vDelimiter;
  41     final CardView vTransaction;
  42     final TextView tvDelimiterMonth, tvDelimiterDate;
  43     final View vDelimiterThick;
  44     final View vHeader;
  45     final TextView tvLastUpdate;
  46     TransactionListItem.Type lastType;
  47     private Observer lastUpdateObserver;
  48     public TransactionRowHolder(@NonNull View itemView) {
  49         super(itemView);
  50         this.row = itemView.findViewById(R.id.transaction_row);
  51         this.tvDescription = itemView.findViewById(R.id.transaction_row_description);
  52         this.tvComment = itemView.findViewById(R.id.transaction_comment);
  53         this.tableAccounts = itemView.findViewById(R.id.transaction_row_acc_amounts);
  54         this.vDelimiter = itemView.findViewById(R.id.transaction_delimiter);
  55         this.vTransaction = itemView.findViewById(R.id.transaction_card_view);
  56         this.tvDelimiterDate = itemView.findViewById(R.id.transaction_delimiter_date);
  57         this.tvDelimiterMonth = itemView.findViewById(R.id.transaction_delimiter_month);
  58         this.vDelimiterThick = itemView.findViewById(R.id.transaction_delimiter_thick);
  59         this.vHeader = itemView.findViewById(R.id.last_update_container);
  60         this.tvLastUpdate = itemView.findViewById(R.id.last_update_text);
  61     }
  62     private void initLastUpdateObserver() {
  63         if (lastUpdateObserver != null)
  64             return;
  65
  66         lastUpdateObserver = (o, arg) -> setLastUpdateText(Data.lastTransactionsUpdateText.get());
  67
  68         Data.lastTransactionsUpdateText.addObserver(lastUpdateObserver);
  69     }
  70     void setLastUpdateText(String text) {
  71         tvLastUpdate.setText(text);
  72     }
  73     private void dropLastUpdateObserver() {
  74         if (lastUpdateObserver == null)
  75             return;
  76
  77         Data.lastTransactionsUpdateText.deleteObserver(lastUpdateObserver);
  78         lastUpdateObserver = null;
  79     }
  80     void setType(TransactionListItem.Type newType) {
  81         if (newType == lastType)
  82             return;
  83
  84         switch (newType) {
  85             case TRANSACTION:
  86                 vHeader.setVisibility(View.GONE);
  87                 vTransaction.setVisibility(View.VISIBLE);
  88                 vDelimiter.setVisibility(View.GONE);
  89                 dropLastUpdateObserver();
  90                 break;
  91             case DELIMITER:
  92                 vHeader.setVisibility(View.GONE);
  93                 vTransaction.setVisibility(View.GONE);
  94                 vDelimiter.setVisibility(View.VISIBLE);
  95                 dropLastUpdateObserver();
  96                 break;
  97             case HEADER:
  98                 vHeader.setVisibility(View.VISIBLE);
  99                 vTransaction.setVisibility(View.GONE);
 100                 vDelimiter.setVisibility(View.GONE);
 101                 initLastUpdateObserver();
 102                 break;
 103             default:
 104                 throw new IllegalStateException("Unexpected value: " + newType);
 105         }
 106
 107         lastType = newType;
 108     }
 109 }