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

   1 /*
   2  * Copyright © 2021 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.ColorInt;
  35 import androidx.annotation.NonNull;
  36 import androidx.recyclerview.widget.AsyncListDiffer;
  37 import androidx.recyclerview.widget.DiffUtil;
  38 import androidx.recyclerview.widget.RecyclerView;
  39
  40 import net.ktnx.mobileledger.App;
  41 import net.ktnx.mobileledger.R;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.LedgerTransaction;
  44 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  45 import net.ktnx.mobileledger.model.TransactionListItem;
  46 import net.ktnx.mobileledger.ui.MainModel;
  47 import net.ktnx.mobileledger.utils.Colors;
  48 import net.ktnx.mobileledger.utils.Globals;
  49 import net.ktnx.mobileledger.utils.Logger;
  50 import net.ktnx.mobileledger.utils.Misc;
  51 import net.ktnx.mobileledger.utils.SimpleDate;
  52
  53 import java.text.DateFormat;
  54 import java.util.GregorianCalendar;
  55 import java.util.List;
  56 import java.util.Locale;
  57 import java.util.TimeZone;
  58
  59 public class TransactionListAdapter extends RecyclerView.Adapter<TransactionRowHolder> {
  60     private final MainModel model;
  61     private final AsyncListDiffer<TransactionListItem> listDiffer;
  62     public TransactionListAdapter(MainModel model) {
  63         super();
  64         this.model = model;
  65
  66         listDiffer = new AsyncListDiffer<>(this, new DiffUtil.ItemCallback<TransactionListItem>() {
  67             @Override
  68             public boolean areItemsTheSame(@NonNull TransactionListItem oldItem,
  69                                            @NonNull TransactionListItem newItem) {
  70                 if (oldItem.getType() != newItem.getType())
  71                     return false;
  72                 switch (oldItem.getType()) {
  73                     case DELIMITER:
  74                         return (oldItem.getDate()
  75                                        .equals(newItem.getDate()));
  76                     case TRANSACTION:
  77                         return oldItem.getTransaction()
  78                                       .getLedgerId() == newItem.getTransaction()
  79                                                                .getLedgerId();
  80                     case HEADER:
  81                         return true;    // there can be only one header
  82                     default:
  83                         throw new IllegalStateException(
  84                                 String.format(Locale.US, "Unexpected transaction item type %s",
  85                                         oldItem.getType()));
  86                 }
  87             }
  88             @Override
  89             public boolean areContentsTheSame(@NonNull TransactionListItem oldItem,
  90                                               @NonNull TransactionListItem newItem) {
  91                 switch (oldItem.getType()) {
  92                     case DELIMITER:
  93                         // Delimiters items are "same" for same dates and the contents are the date
  94                         return true;
  95                     case TRANSACTION:
  96                         return oldItem.getTransaction()
  97                                       .equals(newItem.getTransaction());
  98                     case HEADER:
  99                         // headers don't differ in their contents. they observe the last update
 100                         // date and react to its changes
 101                         return true;
 102                     default:
 103                         throw new IllegalStateException(
 104                                 String.format(Locale.US, "Unexpected transaction item type %s",
 105                                         oldItem.getType()));
 106
 107                 }
 108             }
 109         });
 110     }
 111     public void onBindViewHolder(@NonNull TransactionRowHolder holder, int position) {
 112         TransactionListItem item = listDiffer.getCurrentList()
 113                                              .get(position);
 114
 115         // in a race when transaction value is reduced, but the model hasn't been notified yet
 116         // the view will disappear when the notifications reaches the model, so by simply omitting
 117         // the out-of-range get() call nothing bad happens - just a to-be-deleted view remains
 118         // a bit longer
 119         if (item == null)
 120             return;
 121
 122         final TransactionListItem.Type newType = item.getType();
 123         holder.setType(newType);
 124
 125         switch (newType) {
 126             case TRANSACTION:
 127                 LedgerTransaction tr = item.getTransaction();
 128
 129                 //        debug("transactions", String.format("Filling position %d with %d
 130                 //        accounts", position,
 131                 //                tr.getAccounts().size()));
 132
 133                 TransactionLoader loader = new TransactionLoader();
 134                 loader.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
 135                         new TransactionLoaderParams(tr, holder, position, model.getAccountFilter()
 136                                                                                .getValue()));
 137
 138                 // WORKAROUND what seems to be a bug in CardHolder somewhere
 139                 // when a view that was previously holding a delimiter is re-purposed
 140                 // occasionally it stays too short (not high enough)
 141                 holder.vTransaction.measure(
 142                         View.MeasureSpec.makeMeasureSpec(holder.itemView.getWidth(),
 143                                 View.MeasureSpec.EXACTLY),
 144                         View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
 145                 break;
 146             case DELIMITER:
 147                 SimpleDate date = item.getDate();
 148                 holder.tvDelimiterDate.setText(DateFormat.getDateInstance()
 149                                                          .format(date.toDate()));
 150                 if (item.isMonthShown()) {
 151                     GregorianCalendar cal = new GregorianCalendar(TimeZone.getDefault());
 152                     cal.setTime(date.toDate());
 153                     App.prepareMonthNames();
 154                     holder.tvDelimiterMonth.setText(
 155                             Globals.monthNames[cal.get(GregorianCalendar.MONTH)]);
 156                     holder.tvDelimiterMonth.setVisibility(View.VISIBLE);
 157                     //                holder.vDelimiterLine.setBackgroundResource(R.drawable
 158                     //                .dashed_border_8dp);
 159                     holder.vDelimiterThick.setVisibility(View.VISIBLE);
 160                 }
 161                 else {
 162                     holder.tvDelimiterMonth.setVisibility(View.GONE);
 163                     //                holder.vDelimiterLine.setBackgroundResource(R.drawable
 164                     //                .dashed_border_1dp);
 165                     holder.vDelimiterThick.setVisibility(View.GONE);
 166                 }
 167                 break;
 168             case HEADER:
 169                 holder.setLastUpdateText(Data.lastTransactionsUpdateText.getValue());
 170
 171                 break;
 172             default:
 173                 throw new IllegalStateException("Unexpected value: " + newType);
 174         }
 175     }
 176     @NonNull
 177     @Override
 178     public TransactionRowHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
 179 //        debug("perf", "onCreateViewHolder called");
 180         View row = LayoutInflater.from(parent.getContext())
 181                                  .inflate(R.layout.transaction_list_row, parent, false);
 182         return new TransactionRowHolder(row);
 183     }
 184
 185     @Override
 186     public int getItemCount() {
 187         return listDiffer.getCurrentList()
 188                          .size();
 189     }
 190     public void setTransactions(List<TransactionListItem> newList) {
 191         Logger.debug("transactions",
 192                 String.format(Locale.US, "Got new transaction list (%d items)", newList.size()));
 193         listDiffer.submitList(newList);
 194     }
 195     enum LoaderStep {HEAD, ACCOUNTS, DONE}
 196
 197     private static class TransactionLoader
 198             extends AsyncTask<TransactionLoaderParams, TransactionLoaderStep, Void> {
 199         @Override
 200         protected Void doInBackground(TransactionLoaderParams... p) {
 201             LedgerTransaction tr = p[0].transaction;
 202
 203             SQLiteDatabase db = App.getDatabase();
 204             tr.loadData(db);
 205
 206             publishProgress(new TransactionLoaderStep(p[0].holder, p[0].position, tr));
 207
 208             int rowIndex = 0;
 209             // FIXME ConcurrentModificationException in ArrayList$ltr.next (ArrayList.java:831)
 210             for (LedgerTransactionAccount acc : tr.getAccounts()) {
 211 //                debug(c.getAccountName(), acc.getAmount()));
 212                 publishProgress(new TransactionLoaderStep(p[0].holder, acc, rowIndex++,
 213                         p[0].boldAccountName));
 214             }
 215
 216             publishProgress(new TransactionLoaderStep(p[0].holder, p[0].position, rowIndex));
 217
 218             return null;
 219         }
 220         @Override
 221         protected void onProgressUpdate(TransactionLoaderStep... values) {
 222             super.onProgressUpdate(values);
 223             TransactionLoaderStep step = values[0];
 224             TransactionRowHolder holder = step.getHolder();
 225
 226             switch (step.getStep()) {
 227                 case HEAD:
 228                     holder.tvDescription.setText(step.getTransaction()
 229                                                      .getDescription());
 230                     String trComment = Misc.emptyIsNull(step.getTransaction()
 231                                                             .getComment());
 232                     if (trComment == null)
 233                         holder.tvComment.setVisibility(View.GONE);
 234                     else {
 235                         holder.tvComment.setText(trComment);
 236                         holder.tvComment.setVisibility(View.VISIBLE);
 237                     }
 238
 239 //                    if (step.isOdd())
 240 //                        holder.row.setBackgroundColor(Colors.tableRowDarkBG);
 241 //                    else
 242 //                        holder.row.setBackgroundColor(Colors.tableRowLightBG);
 243
 244                     break;
 245                 case ACCOUNTS:
 246                     int rowIndex = step.getAccountPosition();
 247                     Context ctx = holder.row.getContext();
 248                     LinearLayout row = (LinearLayout) holder.tableAccounts.getChildAt(rowIndex);
 249                     if (row == null) {
 250                         row = new LinearLayout(ctx);
 251                         LayoutInflater inflater = ((Activity) ctx).getLayoutInflater();
 252                         inflater.inflate(R.layout.transaction_list_row_accounts_table_row, row);
 253                         holder.tableAccounts.addView(row);
 254                     }
 255                     TextView dummyText = row.findViewById(R.id.dummy_text);
 256                     TextView accName = row.findViewById(R.id.transaction_list_acc_row_acc_name);
 257                     TextView accComment =
 258                             row.findViewById(R.id.transaction_list_acc_row_acc_comment);
 259                     TextView accAmount = row.findViewById(R.id.transaction_list_acc_row_acc_amount);
 260                     LedgerTransactionAccount acc = step.getAccount();
 261
 262
 263 //                    debug("tmp", String.format("showing acc row %d: %s %1.2f", rowIndex,
 264 //                            acc.getAccountName(), acc.getAmount()));
 265
 266                     String boldAccountName = step.getBoldAccountName();
 267                     if ((boldAccountName != null) && acc.getAccountName()
 268                                                         .startsWith(boldAccountName))
 269                     {
 270                         accName.setTextColor(Colors.secondary);
 271                         accAmount.setTextColor(Colors.secondary);
 272
 273                         SpannableString ss = new SpannableString(acc.getAccountName());
 274                         ss.setSpan(new StyleSpan(Typeface.BOLD), 0, boldAccountName.length(),
 275                                 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 276                         accName.setText(ss);
 277                     }
 278                     else {
 279                         @ColorInt int textColor = dummyText.getTextColors()
 280                                                            .getDefaultColor();
 281                         accName.setTextColor(textColor);
 282                         accAmount.setTextColor(textColor);
 283                         accName.setText(acc.getAccountName());
 284                     }
 285
 286                     String comment = acc.getComment();
 287                     if (comment != null && !comment.isEmpty()) {
 288                         accComment.setText(comment);
 289                         accComment.setVisibility(View.VISIBLE);
 290                     }
 291                     else {
 292                         accComment.setVisibility(View.GONE);
 293                     }
 294                     accAmount.setText(acc.toString());
 295
 296                     break;
 297                 case DONE:
 298                     int accCount = step.getAccountCount();
 299                     if (holder.tableAccounts.getChildCount() > accCount) {
 300                         holder.tableAccounts.removeViews(accCount,
 301                                 holder.tableAccounts.getChildCount() - accCount);
 302                     }
 303
 304 //                    debug("transactions",
 305 //                            String.format("Position %d fill done", step.getPosition()));
 306             }
 307         }
 308     }
 309
 310     private static class TransactionLoaderParams {
 311         final LedgerTransaction transaction;
 312         final TransactionRowHolder holder;
 313         final int position;
 314         final String boldAccountName;
 315         TransactionLoaderParams(LedgerTransaction transaction, TransactionRowHolder holder,
 316                                 int position, String boldAccountName) {
 317             this.transaction = transaction;
 318             this.holder = holder;
 319             this.position = position;
 320             this.boldAccountName = boldAccountName;
 321         }
 322     }
 323 }