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