app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListAdapter.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.transaction_list;
  19
  20 import android.app.Activity;
  21 import android.content.Context;
  22 import android.database.sqlite.SQLiteDatabase;
  23 import android.graphics.Typeface;
  24 import android.os.AsyncTask;
  25 import android.text.Spannable;
  26 import android.text.SpannableString;
  27 import android.text.style.StyleSpan;
  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 androidx.annotation.NonNull;
  35 import androidx.recyclerview.widget.RecyclerView;
  36
  37 import net.ktnx.mobileledger.App;
  38 import net.ktnx.mobileledger.R;
  39 import net.ktnx.mobileledger.model.Data;
  40 import net.ktnx.mobileledger.model.LedgerTransaction;
  41 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  42 import net.ktnx.mobileledger.model.TransactionListItem;
  43 import net.ktnx.mobileledger.utils.Colors;
  44 import net.ktnx.mobileledger.utils.Globals;
  45
  46 import java.text.DateFormat;
  47 import java.util.Date;
  48 import java.util.GregorianCalendar;
  49 import java.util.TimeZone;
  50
  51 public class TransactionListAdapter extends RecyclerView.Adapter<TransactionRowHolder> {
  52     public void onBindViewHolder(@NonNull TransactionRowHolder holder, int position) {
  53         TransactionListItem item = TransactionListViewModel.getTransactionListItem(position);
  54
  55         // in a race when transaction value is reduced, but the model hasn't been notified yet
  56         // the view will disappear when the notifications reaches the model, so by simply omitting
  57         // the out-of-range get() call nothing bad happens - just a to-be-deleted view remains
  58         // a bit longer
  59         if (item == null)
  60             return;
  61
  62         switch (item.getType()) {
  63             case TRANSACTION:
  64                 holder.vTransaction.setVisibility(View.VISIBLE);
  65                 holder.vDelimiter.setVisibility(View.GONE);
  66                 LedgerTransaction tr = item.getTransaction();
  67
  68                 //        debug("transactions", String.format("Filling position %d with %d
  69                 //        accounts", position,
  70                 //                tr.getAccounts().size()));
  71
  72                 TransactionLoader loader = new TransactionLoader();
  73                 loader.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
  74                         new TransactionLoaderParams(tr, holder, position,
  75                                 Data.accountFilter.getValue(), item.isOdd()));
  76
  77                 // WORKAROUND what seems to be a bug in CardHolder somewhere
  78                 // when a view that was previously holding a delimiter is re-purposed
  79                 // occasionally it stays too short (not high enough)
  80                 holder.vTransaction.measure(
  81                         View.MeasureSpec.makeMeasureSpec(holder.itemView.getWidth(),
  82                                 View.MeasureSpec.EXACTLY),
  83                         View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
  84                 break;
  85             case DELIMITER:
  86                 Date date = item.getDate();
  87                 holder.vTransaction.setVisibility(View.GONE);
  88                 holder.vDelimiter.setVisibility(View.VISIBLE);
  89                 holder.tvDelimiterDate.setText(DateFormat.getDateInstance()
  90                                                          .format(date));
  91                 if (item.isMonthShown()) {
  92                     GregorianCalendar cal = new GregorianCalendar(TimeZone.getDefault());
  93                     cal.setTime(date);
  94                     holder.tvDelimiterMonth.setText(
  95                             Globals.monthNames[cal.get(GregorianCalendar.MONTH)]);
  96                     holder.tvDelimiterMonth.setVisibility(View.VISIBLE);
  97                     //                holder.vDelimiterLine.setBackgroundResource(R.drawable
  98                     //                .dashed_border_8dp);
  99                     holder.vDelimiterLine.setVisibility(View.GONE);
 100                     holder.vDelimiterThick.setVisibility(View.VISIBLE);
 101                 }
 102                 else {
 103                     holder.tvDelimiterMonth.setVisibility(View.GONE);
 104                     //                holder.vDelimiterLine.setBackgroundResource(R.drawable
 105                     //                .dashed_border_1dp);
 106                     holder.vDelimiterLine.setVisibility(View.VISIBLE);
 107                     holder.vDelimiterThick.setVisibility(View.GONE);
 108                 }
 109                 break;
 110         }
 111     }
 112
 113     @NonNull
 114     @Override
 115     public TransactionRowHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
 116 //        debug("perf", "onCreateViewHolder called");
 117         View row = LayoutInflater.from(parent.getContext())
 118                                  .inflate(R.layout.transaction_list_row, parent, false);
 119         return new TransactionRowHolder(row);
 120     }
 121
 122     @Override
 123     public int getItemCount() {
 124         return Data.transactions.size();
 125     }
 126     enum LoaderStep {HEAD, ACCOUNTS, DONE}
 127
 128     private static class TransactionLoader
 129             extends AsyncTask<TransactionLoaderParams, TransactionLoaderStep, Void> {
 130         @Override
 131         protected Void doInBackground(TransactionLoaderParams... p) {
 132             LedgerTransaction tr = p[0].transaction;
 133             boolean odd = p[0].odd;
 134
 135             SQLiteDatabase db = App.getDatabase();
 136             tr.loadData(db);
 137
 138             publishProgress(new TransactionLoaderStep(p[0].holder, p[0].position, tr, odd));
 139
 140             int rowIndex = 0;
 141             // FIXME ConcurrentModificationException in ArrayList$ltr.next (ArrayList.java:831)
 142             for (LedgerTransactionAccount acc : tr.getAccounts()) {
 143 //                debug(c.getAccountName(), acc.getAmount()));
 144                 publishProgress(new TransactionLoaderStep(p[0].holder, acc, rowIndex++,
 145                         p[0].boldAccountName));
 146             }
 147
 148             publishProgress(new TransactionLoaderStep(p[0].holder, p[0].position, rowIndex));
 149
 150             return null;
 151         }
 152         @Override
 153         protected void onProgressUpdate(TransactionLoaderStep... values) {
 154             super.onProgressUpdate(values);
 155             TransactionLoaderStep step = values[0];
 156             TransactionRowHolder holder = step.getHolder();
 157
 158             switch (step.getStep()) {
 159                 case HEAD:
 160                     holder.tvDescription.setText(step.getTransaction()
 161                                                      .getDescription());
 162
 163                     if (step.isOdd())
 164                         holder.row.setBackgroundColor(Colors.tableRowDarkBG);
 165                     else
 166                         holder.row.setBackgroundColor(Colors.tableRowLightBG);
 167
 168                     break;
 169                 case ACCOUNTS:
 170                     int rowIndex = step.getAccountPosition();
 171                     Context ctx = holder.row.getContext();
 172                     LinearLayout row = (LinearLayout) holder.tableAccounts.getChildAt(rowIndex);
 173                     if (row == null) {
 174                         LayoutInflater inflater = ((Activity) ctx).getLayoutInflater();
 175                         row = (LinearLayout) inflater.inflate(
 176                                 R.layout.transaction_list_row_accounts_table_row, null);
 177                         // if the rootView above is given (and the line below is spared)
 178                         // the accounts remain with their default text (set in the layout resource)
 179                         holder.tableAccounts.addView(row);
 180                     }
 181                     TextView accName = row.findViewById(R.id.transaction_list_acc_row_acc_name);
 182                     TextView accComment =
 183                             row.findViewById(R.id.transaction_list_acc_row_acc_comment);
 184                     TextView accAmount = row.findViewById(R.id.transaction_list_acc_row_acc_amount);
 185                     LedgerTransactionAccount acc = step.getAccount();
 186
 187
 188 //                    debug("tmp", String.format("showing acc row %d: %s %1.2f", rowIndex,
 189 //                            acc.getAccountName(), acc.getAmount()));
 190
 191                     String boldAccountName = step.getBoldAccountName();
 192                     if ((boldAccountName != null) && acc.getAccountName()
 193                                                         .startsWith(boldAccountName))
 194                     {
 195                         accName.setTextColor(Colors.accent);
 196                         accAmount.setTextColor(Colors.accent);
 197
 198                         SpannableString ss = new SpannableString(acc.getAccountName());
 199                         ss.setSpan(new StyleSpan(Typeface.BOLD), 0, boldAccountName.length(),
 200                                 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 201                         accName.setText(ss);
 202                     }
 203                     else {
 204                         accName.setTextColor(Colors.defaultTextColor);
 205                         accAmount.setTextColor(Colors.defaultTextColor);
 206                         accName.setText(acc.getAccountName());
 207                     }
 208
 209                     String comment = acc.getComment();
 210                     if (comment != null && !comment.isEmpty()) {
 211                         accComment.setText(comment);
 212                         accComment.setVisibility(View.VISIBLE);
 213                     }
 214                     else {
 215                         accComment.setVisibility(View.GONE);
 216                     }
 217                     accAmount.setText(acc.toString());
 218
 219                     break;
 220                 case DONE:
 221                     int accCount = step.getAccountCount();
 222                     if (holder.tableAccounts.getChildCount() > accCount) {
 223                         holder.tableAccounts.removeViews(accCount,
 224                                 holder.tableAccounts.getChildCount() - accCount);
 225                     }
 226
 227 //                    debug("transactions",
 228 //                            String.format("Position %d fill done", step.getPosition()));
 229             }
 230         }
 231     }
 232
 233     private class TransactionLoaderParams {
 234         LedgerTransaction transaction;
 235         TransactionRowHolder holder;
 236         int position;
 237         String boldAccountName;
 238         boolean odd;
 239         TransactionLoaderParams(LedgerTransaction transaction, TransactionRowHolder holder,
 240                                 int position, String boldAccountName, boolean odd) {
 241             this.transaction = transaction;
 242             this.holder = holder;
 243             this.position = position;
 244             this.boldAccountName = boldAccountName;
 245             this.odd = odd;
 246         }
 247     }
 248 }