app/src/main/java/net/ktnx/mobileledger/ui/templates/TemplateDetailsAdapter.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.templates;
  19
  20 import android.annotation.SuppressLint;
  21 import android.content.res.Resources;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.view.LayoutInflater;
  25 import android.view.MotionEvent;
  26 import android.view.View;
  27 import android.view.ViewGroup;
  28 import android.widget.TextView;
  29
  30 import androidx.annotation.NonNull;
  31 import androidx.appcompat.app.AppCompatActivity;
  32 import androidx.recyclerview.widget.AsyncListDiffer;
  33 import androidx.recyclerview.widget.DiffUtil;
  34 import androidx.recyclerview.widget.ItemTouchHelper;
  35 import androidx.recyclerview.widget.RecyclerView;
  36
  37 import net.ktnx.mobileledger.R;
  38 import net.ktnx.mobileledger.databinding.TemplateDetailsAccountBinding;
  39 import net.ktnx.mobileledger.databinding.TemplateDetailsHeaderBinding;
  40 import net.ktnx.mobileledger.db.AccountAutocompleteAdapter;
  41 import net.ktnx.mobileledger.db.TemplateBase;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.TemplateDetailsItem;
  44 import net.ktnx.mobileledger.ui.QRScanCapableFragment;
  45 import net.ktnx.mobileledger.ui.TemplateDetailSourceSelectorFragment;
  46 import net.ktnx.mobileledger.utils.Logger;
  47 import net.ktnx.mobileledger.utils.Misc;
  48
  49 import org.jetbrains.annotations.NotNull;
  50
  51 import java.text.ParseException;
  52 import java.util.ArrayList;
  53 import java.util.List;
  54 import java.util.Locale;
  55 import java.util.regex.Matcher;
  56 import java.util.regex.Pattern;
  57
  58 class TemplateDetailsAdapter extends RecyclerView.Adapter<TemplateDetailsAdapter.ViewHolder> {
  59     private static final String D_TEMPLATE_UI = "template-ui";
  60     private final AsyncListDiffer<TemplateDetailsItem> differ;
  61     private final TemplateDetailsViewModel mModel;
  62     private final ItemTouchHelper itemTouchHelper;
  63     public TemplateDetailsAdapter(TemplateDetailsViewModel model) {
  64         super();
  65         mModel = model;
  66         setHasStableIds(true);
  67         differ = new AsyncListDiffer<>(this, new DiffUtil.ItemCallback<TemplateDetailsItem>() {
  68             @Override
  69             public boolean areItemsTheSame(@NonNull TemplateDetailsItem oldItem,
  70                                            @NonNull TemplateDetailsItem newItem) {
  71                 if (oldItem.getType() != newItem.getType())
  72                     return false;
  73                 if (oldItem.getType()
  74                            .equals(TemplateDetailsItem.Type.HEADER))
  75                     return true;    // only one header item, ever
  76                 // the rest is comparing two account row items
  77                 return oldItem.asAccountRowItem()
  78                               .getId() == newItem.asAccountRowItem()
  79                                                  .getId();
  80             }
  81             @Override
  82             public boolean areContentsTheSame(@NonNull TemplateDetailsItem oldItem,
  83                                               @NonNull TemplateDetailsItem newItem) {
  84                 if (oldItem.getType()
  85                            .equals(TemplateDetailsItem.Type.HEADER))
  86                 {
  87                     TemplateDetailsItem.Header oldHeader = oldItem.asHeaderItem();
  88                     TemplateDetailsItem.Header newHeader = newItem.asHeaderItem();
  89
  90                     return oldHeader.equalContents(newHeader);
  91                 }
  92                 else {
  93                     TemplateDetailsItem.AccountRow oldAcc = oldItem.asAccountRowItem();
  94                     TemplateDetailsItem.AccountRow newAcc = newItem.asAccountRowItem();
  95
  96                     return oldAcc.equalContents(newAcc);
  97                 }
  98             }
  99         });
 100         itemTouchHelper = new ItemTouchHelper(new ItemTouchHelper.Callback() {
 101             @Override
 102             public float getMoveThreshold(@NonNull RecyclerView.ViewHolder viewHolder) {
 103                 return 0.1f;
 104             }
 105             @Override
 106             public boolean isLongPressDragEnabled() {
 107                 return false;
 108             }
 109             @Override
 110             public RecyclerView.ViewHolder chooseDropTarget(
 111                     @NonNull RecyclerView.ViewHolder selected,
 112                     @NonNull List<RecyclerView.ViewHolder> dropTargets, int curX, int curY) {
 113                 RecyclerView.ViewHolder best = null;
 114                 int bestDistance = 0;
 115                 for (RecyclerView.ViewHolder v : dropTargets) {
 116                     if (v == selected)
 117                         continue;
 118
 119                     final int viewTop = v.itemView.getTop();
 120                     int distance = Math.abs(viewTop - curY);
 121                     if (best == null) {
 122                         best = v;
 123                         bestDistance = distance;
 124                     }
 125                     else {
 126                         if (distance < bestDistance) {
 127                             bestDistance = distance;
 128                             best = v;
 129                         }
 130                     }
 131                 }
 132
 133                 Logger.debug("dnd", "Best target is " + best);
 134                 return best;
 135             }
 136             @Override
 137             public boolean canDropOver(@NonNull RecyclerView recyclerView,
 138                                        @NonNull RecyclerView.ViewHolder current,
 139                                        @NonNull RecyclerView.ViewHolder target) {
 140                 final int adapterPosition = target.getAdapterPosition();
 141
 142                 // first item is immovable
 143                 if (adapterPosition == 0)
 144                     return false;
 145
 146                 return super.canDropOver(recyclerView, current, target);
 147             }
 148             @Override
 149             public int getMovementFlags(@NonNull RecyclerView recyclerView,
 150                                         @NonNull RecyclerView.ViewHolder viewHolder) {
 151                 int flags = 0;
 152                 // the top item (transaction params) is always there
 153                 final int adapterPosition = viewHolder.getAdapterPosition();
 154                 if (adapterPosition > 0)
 155                     flags |= makeFlag(ItemTouchHelper.ACTION_STATE_DRAG,
 156                             ItemTouchHelper.UP | ItemTouchHelper.DOWN) |
 157                              makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
 158                                      ItemTouchHelper.START | ItemTouchHelper.END);
 159
 160                 return flags;
 161             }
 162             @Override
 163             public boolean onMove(@NonNull RecyclerView recyclerView,
 164                                   @NonNull RecyclerView.ViewHolder viewHolder,
 165                                   @NonNull RecyclerView.ViewHolder target) {
 166
 167                 final int fromPosition = viewHolder.getAdapterPosition();
 168                 final int toPosition = target.getAdapterPosition();
 169                 mModel.moveItem(fromPosition, toPosition);
 170
 171                 return true;
 172             }
 173             @Override
 174             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 175                 int pos = viewHolder.getAdapterPosition();
 176                 mModel.removeItem(pos);
 177             }
 178         });
 179     }
 180     @Override
 181     public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
 182         super.onAttachedToRecyclerView(recyclerView);
 183
 184         itemTouchHelper.attachToRecyclerView(recyclerView);
 185     }
 186     @Override
 187     public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) {
 188         super.onDetachedFromRecyclerView(recyclerView);
 189
 190         itemTouchHelper.attachToRecyclerView(null);
 191     }
 192     @Override
 193     public long getItemId(int position) {
 194         // header item is always first and IDs id may duplicate some of the account IDs
 195         if (position == 0)
 196             return -1;
 197         TemplateDetailsItem.AccountRow accRow = differ.getCurrentList()
 198                                                       .get(position)
 199                                                       .asAccountRowItem();
 200         return accRow.getId();
 201     }
 202     @Override
 203     public int getItemViewType(int position) {
 204
 205         return differ.getCurrentList()
 206                      .get(position)
 207                      .getType()
 208                      .toInt();
 209     }
 210     @NonNull
 211     @Override
 212     public TemplateDetailsAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent,
 213                                                                 int viewType) {
 214         final LayoutInflater inflater = LayoutInflater.from(parent.getContext());
 215         switch (viewType) {
 216             case TemplateDetailsItem.TYPE.header:
 217                 return new Header(TemplateDetailsHeaderBinding.inflate(inflater, parent, false));
 218             case TemplateDetailsItem.TYPE.accountItem:
 219                 return new AccountRow(
 220                         TemplateDetailsAccountBinding.inflate(inflater, parent, false));
 221             default:
 222                 throw new IllegalStateException("Unsupported view type " + viewType);
 223         }
 224     }
 225     @Override
 226     public void onBindViewHolder(@NonNull TemplateDetailsAdapter.ViewHolder holder, int position) {
 227         TemplateDetailsItem item = differ.getCurrentList()
 228                                          .get(position);
 229         holder.bind(item);
 230     }
 231     @Override
 232     public int getItemCount() {
 233         return differ.getCurrentList()
 234                      .size();
 235     }
 236     public void setTemplateItems(List<TemplateBase> items) {
 237         ArrayList<TemplateDetailsItem> list = new ArrayList<>();
 238         for (TemplateBase p : items) {
 239             TemplateDetailsItem item = TemplateDetailsItem.fromRoomObject(p);
 240             list.add(item);
 241         }
 242         setItems(list);
 243     }
 244     public void setItems(List<TemplateDetailsItem> items) {
 245         differ.submitList(items);
 246     }
 247     public String getMatchGroupText(int groupNumber) {
 248         TemplateDetailsItem.Header header = getHeader();
 249         Pattern p = header.getCompiledPattern();
 250         if (p == null)
 251             return null;
 252
 253         final String testText = Misc.nullIsEmpty(header.getTestText());
 254         Matcher m = p.matcher(testText);
 255         if (m.matches() && m.groupCount() >= groupNumber)
 256             return m.group(groupNumber);
 257         else
 258             return null;
 259     }
 260     protected TemplateDetailsItem.Header getHeader() {
 261         return differ.getCurrentList()
 262                      .get(0)
 263                      .asHeaderItem();
 264     }
 265
 266     private enum HeaderDetail {DESCRIPTION, COMMENT, DATE_YEAR, DATE_MONTH, DATE_DAY}
 267
 268     private enum AccDetail {ACCOUNT, COMMENT, AMOUNT}
 269
 270     public abstract static class ViewHolder extends RecyclerView.ViewHolder {
 271         ViewHolder(@NonNull View itemView) {
 272             super(itemView);
 273         }
 274         abstract void bind(TemplateDetailsItem item);
 275     }
 276
 277     private abstract static class BaseItem extends ViewHolder {
 278         boolean updatePropagationDisabled = false;
 279         BaseItem(@NonNull View itemView) {
 280             super(itemView);
 281         }
 282         void disableUpdatePropagation() {
 283             updatePropagationDisabled = true;
 284         }
 285         void enableUpdatePropagation() {
 286             updatePropagationDisabled = false;
 287         }
 288     }
 289
 290     public class Header extends BaseItem {
 291         private final TemplateDetailsHeaderBinding b;
 292         boolean updatePropagationDisabled = false;
 293         public Header(@NonNull TemplateDetailsHeaderBinding binding) {
 294             super(binding.getRoot());
 295             b = binding;
 296
 297             TextWatcher templateNameWatcher = new TextWatcher() {
 298                 @Override
 299                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 300                 @Override
 301                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 302                 @Override
 303                 public void afterTextChanged(Editable s) {
 304                     if (updatePropagationDisabled)
 305                         return;
 306
 307                     final TemplateDetailsItem.Header header = getItem();
 308                     Logger.debug(D_TEMPLATE_UI,
 309                             "Storing changed template name " + s + "; header=" + header);
 310                     header.setName(String.valueOf(s));
 311                 }
 312             };
 313             b.templateName.addTextChangedListener(templateNameWatcher);
 314
 315             TextWatcher patternWatcher = new TextWatcher() {
 316                 @Override
 317                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 318                 @Override
 319                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 320                 @Override
 321                 public void afterTextChanged(Editable s) {
 322                     if (updatePropagationDisabled)
 323                         return;
 324
 325                     final TemplateDetailsItem.Header header = getItem();
 326                     Logger.debug(D_TEMPLATE_UI,
 327                             "Storing changed pattern " + s + "; header=" + header);
 328                     header.setPattern(String.valueOf(s));
 329
 330                     checkPatternError(header);
 331                 }
 332             };
 333             b.pattern.addTextChangedListener(patternWatcher);
 334
 335             TextWatcher testTextWatcher = new TextWatcher() {
 336                 @Override
 337                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 338                 @Override
 339                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 340                 @Override
 341                 public void afterTextChanged(Editable s) {
 342                     if (updatePropagationDisabled)
 343                         return;
 344
 345                     final TemplateDetailsItem.Header header = getItem();
 346                     Logger.debug(D_TEMPLATE_UI,
 347                             "Storing changed test text " + s + "; header=" + header);
 348                     header.setTestText(String.valueOf(s));
 349
 350                     checkPatternError(header);
 351                 }
 352             };
 353             b.testText.addTextChangedListener(testTextWatcher);
 354
 355             TextWatcher transactionDescriptionWatcher = new TextWatcher() {
 356                 @Override
 357                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 358                 }
 359                 @Override
 360                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 361                 }
 362                 @Override
 363                 public void afterTextChanged(Editable s) {
 364                     if (updatePropagationDisabled)
 365                         return;
 366
 367                     final TemplateDetailsItem.Header header = getItem();
 368                     Logger.debug(D_TEMPLATE_UI,
 369                             "Storing changed transaction description " + s + "; header=" + header);
 370                     header.setTransactionDescription(String.valueOf(s));
 371                 }
 372             };
 373             b.transactionDescription.addTextChangedListener(transactionDescriptionWatcher);
 374             TextWatcher transactionCommentWatcher = new TextWatcher() {
 375                 @Override
 376                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 377                 }
 378                 @Override
 379                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 380                 }
 381                 @Override
 382                 public void afterTextChanged(Editable s) {
 383                     if (updatePropagationDisabled)
 384                         return;
 385
 386                     final TemplateDetailsItem.Header header = getItem();
 387                     Logger.debug(D_TEMPLATE_UI,
 388                             "Storing changed transaction description " + s + "; header=" + header);
 389                     header.setTransactionComment(String.valueOf(s));
 390                 }
 391             };
 392             b.transactionComment.addTextChangedListener(transactionCommentWatcher);
 393         }
 394         @NotNull
 395         private TemplateDetailsItem.Header getItem() {
 396             int pos = getAdapterPosition();
 397             return differ.getCurrentList()
 398                          .get(pos)
 399                          .asHeaderItem();
 400         }
 401         private void selectHeaderDetailSource(View v, HeaderDetail detail) {
 402             TemplateDetailsItem.Header header = getItem();
 403             Logger.debug(D_TEMPLATE_UI, "header is " + header);
 404             TemplateDetailSourceSelectorFragment sel =
 405                     TemplateDetailSourceSelectorFragment.newInstance(1, header.getPattern(),
 406                             header.getTestText());
 407             sel.setOnSourceSelectedListener((literal, group) -> {
 408                 if (literal) {
 409                     switch (detail) {
 410                         case DESCRIPTION:
 411                             header.switchToLiteralTransactionDescription();
 412                             break;
 413                         case COMMENT:
 414                             header.switchToLiteralTransactionComment();
 415                             break;
 416                         case DATE_YEAR:
 417                             header.switchToLiteralDateYear();
 418                             break;
 419                         case DATE_MONTH:
 420                             header.switchToLiteralDateMonth();
 421                             break;
 422                         case DATE_DAY:
 423                             header.switchToLiteralDateDay();
 424                             break;
 425                         default:
 426                             throw new IllegalStateException("Unexpected detail " + detail);
 427                     }
 428                 }
 429                 else {
 430                     switch (detail) {
 431                         case DESCRIPTION:
 432                             header.setTransactionDescriptionMatchGroup(group);
 433                             break;
 434                         case COMMENT:
 435                             header.setTransactionCommentMatchGroup(group);
 436                             break;
 437                         case DATE_YEAR:
 438                             header.setDateYearMatchGroup(group);
 439                             break;
 440                         case DATE_MONTH:
 441                             header.setDateMonthMatchGroup(group);
 442                             break;
 443                         case DATE_DAY:
 444                             header.setDateDayMatchGroup(group);
 445                             break;
 446                         default:
 447                             throw new IllegalStateException("Unexpected detail " + detail);
 448                     }
 449                 }
 450
 451                 notifyItemChanged(getAdapterPosition());
 452             });
 453             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 454             sel.show(activity.getSupportFragmentManager(), "template-details-source-selector");
 455         }
 456         @Override
 457         void bind(TemplateDetailsItem item) {
 458             TemplateDetailsItem.Header header = item.asHeaderItem();
 459             Logger.debug(D_TEMPLATE_UI, "Binding to header " + header);
 460
 461             disableUpdatePropagation();
 462             try {
 463                 String groupNoText = b.getRoot()
 464                                       .getResources()
 465                                       .getString(R.string.template_item_match_group_source);
 466
 467                 b.templateName.setText(header.getName());
 468                 b.pattern.setText(header.getPattern());
 469                 b.testText.setText(header.getTestText());
 470
 471                 if (header.hasLiteralDateYear()) {
 472                     b.templateDetailsYearSource.setText(R.string.template_details_source_literal);
 473                     final Integer dateYear = header.getDateYear();
 474                     b.templateDetailsDateYear.setText(
 475                             (dateYear == null) ? null : String.valueOf(dateYear));
 476                     b.templateDetailsDateYearLayout.setVisibility(View.VISIBLE);
 477                 }
 478                 else {
 479                     b.templateDetailsDateYearLayout.setVisibility(View.GONE);
 480                     b.templateDetailsYearSource.setText(
 481                             String.format(Locale.US, groupNoText, header.getDateYearMatchGroup(),
 482                                     getMatchGroupText(header.getDateYearMatchGroup())));
 483                 }
 484                 b.templateDetailsYearSourceLabel.setOnClickListener(
 485                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_YEAR));
 486                 b.templateDetailsYearSource.setOnClickListener(
 487                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_YEAR));
 488
 489                 if (header.hasLiteralDateMonth()) {
 490                     b.templateDetailsMonthSource.setText(R.string.template_details_source_literal);
 491                     final Integer dateMonth = header.getDateMonth();
 492                     b.templateDetailsDateMonth.setText(
 493                             (dateMonth == null) ? null : String.valueOf(dateMonth));
 494                     b.templateDetailsDateMonthLayout.setVisibility(View.VISIBLE);
 495                 }
 496                 else {
 497                     b.templateDetailsDateMonthLayout.setVisibility(View.GONE);
 498                     b.templateDetailsMonthSource.setText(
 499                             String.format(Locale.US, groupNoText, header.getDateMonthMatchGroup(),
 500                                     getMatchGroupText(header.getDateMonthMatchGroup())));
 501                 }
 502                 b.templateDetailsMonthSourceLabel.setOnClickListener(
 503                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_MONTH));
 504                 b.templateDetailsMonthSource.setOnClickListener(
 505                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_MONTH));
 506
 507                 if (header.hasLiteralDateDay()) {
 508                     b.templateDetailsDaySource.setText(R.string.template_details_source_literal);
 509                     final Integer dateDay = header.getDateDay();
 510                     b.templateDetailsDateDay.setText(
 511                             (dateDay == null) ? null : String.valueOf(dateDay));
 512                     b.templateDetailsDateDayLayout.setVisibility(View.VISIBLE);
 513                 }
 514                 else {
 515                     b.templateDetailsDateDayLayout.setVisibility(View.GONE);
 516                     b.templateDetailsDaySource.setText(
 517                             String.format(Locale.US, groupNoText, header.getDateDayMatchGroup(),
 518                                     getMatchGroupText(header.getDateDayMatchGroup())));
 519                 }
 520                 b.templateDetailsDaySourceLabel.setOnClickListener(
 521                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_DAY));
 522                 b.templateDetailsDaySource.setOnClickListener(
 523                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_DAY));
 524
 525                 if (header.hasLiteralTransactionDescription()) {
 526                     b.templateTransactionDescriptionSource.setText(
 527                             R.string.template_details_source_literal);
 528                     b.transactionDescription.setText(header.getTransactionDescription());
 529                     b.transactionDescriptionLayout.setVisibility(View.VISIBLE);
 530                 }
 531                 else {
 532                     b.transactionDescriptionLayout.setVisibility(View.GONE);
 533                     b.templateTransactionDescriptionSource.setText(
 534                             String.format(Locale.US, groupNoText,
 535                                     header.getTransactionDescriptionMatchGroup(), getMatchGroupText(
 536                                             header.getTransactionDescriptionMatchGroup())));
 537
 538                 }
 539                 b.templateTransactionDescriptionSourceLabel.setOnClickListener(
 540                         v -> selectHeaderDetailSource(v, HeaderDetail.DESCRIPTION));
 541                 b.templateTransactionDescriptionSource.setOnClickListener(
 542                         v -> selectHeaderDetailSource(v, HeaderDetail.DESCRIPTION));
 543
 544                 if (header.hasLiteralTransactionComment()) {
 545                     b.templateTransactionCommentSource.setText(
 546                             R.string.template_details_source_literal);
 547                     b.transactionComment.setText(header.getTransactionComment());
 548                     b.transactionCommentLayout.setVisibility(View.VISIBLE);
 549                 }
 550                 else {
 551                     b.transactionCommentLayout.setVisibility(View.GONE);
 552                     b.templateTransactionCommentSource.setText(String.format(Locale.US, groupNoText,
 553                             header.getTransactionCommentMatchGroup(),
 554                             getMatchGroupText(header.getTransactionCommentMatchGroup())));
 555
 556                 }
 557                 b.templateTransactionCommentSourceLabel.setOnClickListener(
 558                         v -> selectHeaderDetailSource(v, HeaderDetail.COMMENT));
 559                 b.templateTransactionCommentSource.setOnClickListener(
 560                         v -> selectHeaderDetailSource(v, HeaderDetail.COMMENT));
 561
 562                 b.templateDetailsHeadScanQrButton.setOnClickListener(this::scanTestQR);
 563
 564                 checkPatternError(header);
 565             }
 566             finally {
 567                 enableUpdatePropagation();
 568             }
 569         }
 570         private void checkPatternError(TemplateDetailsItem.Header item) {
 571             if (item.getPatternError() != null) {
 572                 b.patternLayout.setError(item.getPatternError());
 573                 b.patternHintTitle.setVisibility(View.GONE);
 574                 b.patternHintText.setVisibility(View.GONE);
 575             }
 576             else {
 577                 b.patternLayout.setError(null);
 578                 if (item.testMatch() != null) {
 579                     b.patternHintText.setText(item.testMatch());
 580                     b.patternHintTitle.setVisibility(View.VISIBLE);
 581                     b.patternHintText.setVisibility(View.VISIBLE);
 582                 }
 583                 else {
 584                     b.patternLayout.setError(null);
 585                     b.patternHintTitle.setVisibility(View.GONE);
 586                     b.patternHintText.setVisibility(View.GONE);
 587                 }
 588             }
 589
 590         }
 591         private void scanTestQR(View view) {
 592             QRScanCapableFragment.triggerQRScan();
 593         }
 594     }
 595
 596     public class AccountRow extends BaseItem {
 597         private final TemplateDetailsAccountBinding b;
 598         public AccountRow(@NonNull TemplateDetailsAccountBinding binding) {
 599             super(binding.getRoot());
 600             b = binding;
 601
 602             TextWatcher accountNameWatcher = new TextWatcher() {
 603                 @Override
 604                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 605                 @Override
 606                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 607                 @Override
 608                 public void afterTextChanged(Editable s) {
 609                     if (updatePropagationDisabled)
 610                         return;
 611
 612                     TemplateDetailsItem.AccountRow accRow = getItem();
 613                     Logger.debug(D_TEMPLATE_UI,
 614                             "Storing changed account name " + s + "; accRow=" + accRow);
 615                     accRow.setAccountName(String.valueOf(s));
 616                 }
 617             };
 618             b.templateDetailsAccountName.addTextChangedListener(accountNameWatcher);
 619             b.templateDetailsAccountName.setAdapter(new AccountAutocompleteAdapter(b.getRoot()
 620                                                                                     .getContext()));
 621             b.templateDetailsAccountName.setOnItemClickListener(
 622                     (parent, view, position, id) -> b.templateDetailsAccountName.setText(
 623                             ((TextView) view).getText()));
 624             TextWatcher accountCommentWatcher = new TextWatcher() {
 625                 @Override
 626                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 627                 @Override
 628                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 629                 @Override
 630                 public void afterTextChanged(Editable s) {
 631                     if (updatePropagationDisabled)
 632                         return;
 633
 634                     TemplateDetailsItem.AccountRow accRow = getItem();
 635                     Logger.debug(D_TEMPLATE_UI,
 636                             "Storing changed account comment " + s + "; accRow=" + accRow);
 637                     accRow.setAccountComment(String.valueOf(s));
 638                 }
 639             };
 640             b.templateDetailsAccountComment.addTextChangedListener(accountCommentWatcher);
 641
 642             b.templateDetailsAccountAmount.addTextChangedListener(new TextWatcher() {
 643                 @Override
 644                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 645
 646                 }
 647                 @Override
 648                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 649
 650                 }
 651                 @Override
 652                 public void afterTextChanged(Editable s) {
 653                     if (updatePropagationDisabled)
 654                         return;
 655
 656                     TemplateDetailsItem.AccountRow accRow = getItem();
 657
 658                     String str = String.valueOf(s);
 659                     if (Misc.emptyIsNull(str) == null) {
 660                         accRow.setAmount(null);
 661                     }
 662                     else {
 663                         try {
 664                             final float amount = Data.parseNumber(str);
 665                             accRow.setAmount(amount);
 666                             b.templateDetailsAccountAmountLayout.setError(null);
 667
 668                             Logger.debug(D_TEMPLATE_UI, String.format(Locale.US,
 669                                     "Storing changed account amount %s [%4.2f]; accRow=%s", s,
 670                                     amount, accRow));
 671                         }
 672                         catch (NumberFormatException | ParseException e) {
 673                             b.templateDetailsAccountAmountLayout.setError("!");
 674                         }
 675                     }
 676                 }
 677             });
 678             b.templateDetailsAccountAmount.setOnFocusChangeListener((v, hasFocus) -> {
 679                 if (hasFocus)
 680                     return;
 681
 682                 TemplateDetailsItem.AccountRow accRow = getItem();
 683                 if (!accRow.hasLiteralAmount())
 684                     return;
 685                 Float amt = accRow.getAmount();
 686                 if (amt == null)
 687                     return;
 688
 689                 b.templateDetailsAccountAmount.setText(Data.formatNumber(amt));
 690             });
 691
 692             b.negateAmountSwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
 693                 if (updatePropagationDisabled)
 694                     return;
 695
 696                 getItem().setNegateAmount(isChecked);
 697                 b.templateDetailsNegateAmountText.setText(
 698                         isChecked ? R.string.template_account_change_amount_sign
 699                                   : R.string.template_account_keep_amount_sign);
 700             });
 701             final View.OnClickListener negLabelClickListener =
 702                     (view) -> b.negateAmountSwitch.toggle();
 703             b.templateDetailsNegateAmountLabel.setOnClickListener(negLabelClickListener);
 704             b.templateDetailsNegateAmountText.setOnClickListener(negLabelClickListener);
 705             manageAccountLabelDrag();
 706         }
 707         @SuppressLint("ClickableViewAccessibility")
 708         public void manageAccountLabelDrag() {
 709             b.patternAccountLabel.setOnTouchListener((v, event) -> {
 710                 if (event.getAction() == MotionEvent.ACTION_DOWN) {
 711                     itemTouchHelper.startDrag(this);
 712                 }
 713                 return false;
 714             });
 715         }
 716         @Override
 717         void bind(TemplateDetailsItem item) {
 718             disableUpdatePropagation();
 719             try {
 720                 final Resources resources = b.getRoot()
 721                                              .getResources();
 722                 String groupNoText = resources.getString(R.string.template_item_match_group_source);
 723
 724                 TemplateDetailsItem.AccountRow accRow = item.asAccountRowItem();
 725                 b.patternAccountLabel.setText(String.format(Locale.US,
 726                         resources.getString(R.string.template_details_account_row_label),
 727                         accRow.getPosition()));
 728                 if (accRow.hasLiteralAccountName()) {
 729                     b.templateDetailsAccountNameLayout.setVisibility(View.VISIBLE);
 730                     b.templateDetailsAccountName.setText(accRow.getAccountName());
 731                     b.templateDetailsAccountNameSource.setText(
 732                             R.string.template_details_source_literal);
 733                 }
 734                 else {
 735                     b.templateDetailsAccountNameLayout.setVisibility(View.GONE);
 736                     b.templateDetailsAccountNameSource.setText(
 737                             String.format(Locale.US, groupNoText, accRow.getAccountNameMatchGroup(),
 738                                     getMatchGroupText(accRow.getAccountNameMatchGroup())));
 739                 }
 740
 741                 if (accRow.hasLiteralAccountComment()) {
 742                     b.templateDetailsAccountCommentLayout.setVisibility(View.VISIBLE);
 743                     b.templateDetailsAccountComment.setText(accRow.getAccountComment());
 744                     b.templateDetailsAccountCommentSource.setText(
 745                             R.string.template_details_source_literal);
 746                 }
 747                 else {
 748                     b.templateDetailsAccountCommentLayout.setVisibility(View.GONE);
 749                     b.templateDetailsAccountCommentSource.setText(
 750                             String.format(Locale.US, groupNoText,
 751                                     accRow.getAccountCommentMatchGroup(),
 752                                     getMatchGroupText(accRow.getAccountCommentMatchGroup())));
 753                 }
 754
 755                 if (accRow.hasLiteralAmount()) {
 756                     b.templateDetailsAccountAmountSource.setText(
 757                             R.string.template_details_source_literal);
 758                     b.templateDetailsAccountAmount.setVisibility(View.VISIBLE);
 759                     Float amt = accRow.getAmount();
 760                     b.templateDetailsAccountAmount.setText((amt == null) ? null : String.format(
 761                             Data.locale.getValue(), "%,4.2f", (accRow.getAmount())));
 762                     b.negateAmountSwitch.setVisibility(View.GONE);
 763                     b.templateDetailsNegateAmountLabel.setVisibility(View.GONE);
 764                     b.templateDetailsNegateAmountText.setVisibility(View.GONE);
 765                 }
 766                 else {
 767                     b.templateDetailsAccountAmountSource.setText(
 768                             String.format(Locale.US, groupNoText, accRow.getAmountMatchGroup(),
 769                                     getMatchGroupText(accRow.getAmountMatchGroup())));
 770                     b.templateDetailsAccountAmountLayout.setVisibility(View.GONE);
 771                     b.negateAmountSwitch.setVisibility(View.VISIBLE);
 772                     b.negateAmountSwitch.setChecked(accRow.isNegateAmount());
 773                     b.templateDetailsNegateAmountText.setText(
 774                             accRow.isNegateAmount() ? R.string.template_account_change_amount_sign
 775                                                     : R.string.template_account_keep_amount_sign);
 776                     b.templateDetailsNegateAmountLabel.setVisibility(View.VISIBLE);
 777                     b.templateDetailsNegateAmountText.setVisibility(View.VISIBLE);
 778                 }
 779
 780                 b.templateAccountNameSourceLabel.setOnClickListener(
 781                         v -> selectAccountRowDetailSource(v, AccDetail.ACCOUNT));
 782                 b.templateDetailsAccountNameSource.setOnClickListener(
 783                         v -> selectAccountRowDetailSource(v, AccDetail.ACCOUNT));
 784                 b.templateAccountCommentSourceLabel.setOnClickListener(
 785                         v -> selectAccountRowDetailSource(v, AccDetail.COMMENT));
 786                 b.templateDetailsAccountCommentSource.setOnClickListener(
 787                         v -> selectAccountRowDetailSource(v, AccDetail.COMMENT));
 788                 b.templateAccountAmountSourceLabel.setOnClickListener(
 789                         v -> selectAccountRowDetailSource(v, AccDetail.AMOUNT));
 790                 b.templateDetailsAccountAmountSource.setOnClickListener(
 791                         v -> selectAccountRowDetailSource(v, AccDetail.AMOUNT));
 792             }
 793             finally {
 794                 enableUpdatePropagation();
 795             }
 796         }
 797         private @NotNull TemplateDetailsItem.AccountRow getItem() {
 798             return differ.getCurrentList()
 799                          .get(getAdapterPosition())
 800                          .asAccountRowItem();
 801         }
 802         private void selectAccountRowDetailSource(View v, AccDetail detail) {
 803             TemplateDetailsItem.AccountRow accRow = getItem();
 804             final TemplateDetailsItem.Header header = getHeader();
 805             Logger.debug(D_TEMPLATE_UI, "header is " + header);
 806             TemplateDetailSourceSelectorFragment sel =
 807                     TemplateDetailSourceSelectorFragment.newInstance(1, header.getPattern(),
 808                             header.getTestText());
 809             sel.setOnSourceSelectedListener((literal, group) -> {
 810                 if (literal) {
 811                     switch (detail) {
 812                         case ACCOUNT:
 813                             accRow.switchToLiteralAccountName();
 814                             break;
 815                         case COMMENT:
 816                             accRow.switchToLiteralAccountComment();
 817                             break;
 818                         case AMOUNT:
 819                             accRow.switchToLiteralAmount();
 820                             break;
 821                         default:
 822                             throw new IllegalStateException("Unexpected detail " + detail);
 823                     }
 824                 }
 825                 else {
 826                     switch (detail) {
 827                         case ACCOUNT:
 828                             accRow.setAccountNameMatchGroup(group);
 829                             break;
 830                         case COMMENT:
 831                             accRow.setAccountCommentMatchGroup(group);
 832                             break;
 833                         case AMOUNT:
 834                             accRow.setAmountMatchGroup(group);
 835                             break;
 836                         default:
 837                             throw new IllegalStateException("Unexpected detail " + detail);
 838                     }
 839                 }
 840
 841                 notifyItemChanged(getAdapterPosition());
 842             });
 843             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 844             sel.show(activity.getSupportFragmentManager(), "template-details-source-selector");
 845         }
 846     }
 847 }