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