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.BuildConfig;
  38 import net.ktnx.mobileledger.R;
  39 import net.ktnx.mobileledger.databinding.TemplateDetailsAccountBinding;
  40 import net.ktnx.mobileledger.databinding.TemplateDetailsHeaderBinding;
  41 import net.ktnx.mobileledger.db.AccountAutocompleteAdapter;
  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.List;
  53 import java.util.Locale;
  54 import java.util.regex.Matcher;
  55 import java.util.regex.Pattern;
  56
  57 class TemplateDetailsAdapter extends RecyclerView.Adapter<TemplateDetailsAdapter.ViewHolder> {
  58     private static final String D_TEMPLATE_UI = "template-ui";
  59     private final AsyncListDiffer<TemplateDetailsItem> differ;
  60     private final TemplateDetailsViewModel mModel;
  61     private final ItemTouchHelper itemTouchHelper;
  62     public TemplateDetailsAdapter(TemplateDetailsViewModel model) {
  63         super();
  64         mModel = model;
  65         setHasStableIds(true);
  66         differ = new AsyncListDiffer<>(this, new DiffUtil.ItemCallback<TemplateDetailsItem>() {
  67             @Override
  68             public boolean areItemsTheSame(@NonNull TemplateDetailsItem oldItem,
  69                                            @NonNull TemplateDetailsItem newItem) {
  70                 if (oldItem.getType() != newItem.getType())
  71                     return false;
  72                 if (oldItem.getType()
  73                            .equals(TemplateDetailsItem.Type.HEADER))
  74                     return true;    // only one header item, ever
  75                 // the rest is comparing two account row items
  76                 return oldItem.asAccountRowItem()
  77                               .getId() == newItem.asAccountRowItem()
  78                                                  .getId();
  79             }
  80             @Override
  81             public boolean areContentsTheSame(@NonNull TemplateDetailsItem oldItem,
  82                                               @NonNull TemplateDetailsItem newItem) {
  83                 if (oldItem.getType()
  84                            .equals(TemplateDetailsItem.Type.HEADER))
  85                 {
  86                     TemplateDetailsItem.Header oldHeader = oldItem.asHeaderItem();
  87                     TemplateDetailsItem.Header newHeader = newItem.asHeaderItem();
  88
  89                     return oldHeader.equalContents(newHeader);
  90                 }
  91                 else {
  92                     TemplateDetailsItem.AccountRow oldAcc = oldItem.asAccountRowItem();
  93                     TemplateDetailsItem.AccountRow newAcc = newItem.asAccountRowItem();
  94
  95                     return oldAcc.equalContents(newAcc);
  96                 }
  97             }
  98         });
  99         itemTouchHelper = new ItemTouchHelper(new ItemTouchHelper.Callback() {
 100             @Override
 101             public float getMoveThreshold(@NonNull RecyclerView.ViewHolder viewHolder) {
 102                 return 0.1f;
 103             }
 104             @Override
 105             public boolean isLongPressDragEnabled() {
 106                 return false;
 107             }
 108             @Override
 109             public RecyclerView.ViewHolder chooseDropTarget(
 110                     @NonNull RecyclerView.ViewHolder selected,
 111                     @NonNull List<RecyclerView.ViewHolder> dropTargets, int curX, int curY) {
 112                 RecyclerView.ViewHolder best = null;
 113                 int bestDistance = 0;
 114                 for (RecyclerView.ViewHolder v : dropTargets) {
 115                     if (v == selected)
 116                         continue;
 117
 118                     final int viewTop = v.itemView.getTop();
 119                     int distance = Math.abs(viewTop - curY);
 120                     if (best == null) {
 121                         best = v;
 122                         bestDistance = distance;
 123                     }
 124                     else {
 125                         if (distance < bestDistance) {
 126                             bestDistance = distance;
 127                             best = v;
 128                         }
 129                     }
 130                 }
 131
 132                 Logger.debug("dnd", "Best target is " + best);
 133                 return best;
 134             }
 135             @Override
 136             public boolean canDropOver(@NonNull RecyclerView recyclerView,
 137                                        @NonNull RecyclerView.ViewHolder current,
 138                                        @NonNull RecyclerView.ViewHolder target) {
 139                 final int adapterPosition = target.getAdapterPosition();
 140
 141                 // first item is immovable
 142                 if (adapterPosition == 0)
 143                     return false;
 144
 145                 return super.canDropOver(recyclerView, current, target);
 146             }
 147             @Override
 148             public int getMovementFlags(@NonNull RecyclerView recyclerView,
 149                                         @NonNull RecyclerView.ViewHolder viewHolder) {
 150                 int flags = 0;
 151                 // the top item (transaction params) is always there
 152                 final int adapterPosition = viewHolder.getAdapterPosition();
 153                 if (adapterPosition > 0)
 154                     flags |= makeFlag(ItemTouchHelper.ACTION_STATE_DRAG,
 155                             ItemTouchHelper.UP | ItemTouchHelper.DOWN) |
 156                              makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
 157                                      ItemTouchHelper.START | ItemTouchHelper.END);
 158
 159                 return flags;
 160             }
 161             @Override
 162             public boolean onMove(@NonNull RecyclerView recyclerView,
 163                                   @NonNull RecyclerView.ViewHolder viewHolder,
 164                                   @NonNull RecyclerView.ViewHolder target) {
 165
 166                 final int fromPosition = viewHolder.getAdapterPosition();
 167                 final int toPosition = target.getAdapterPosition();
 168                 if (fromPosition == toPosition) {
 169                     Logger.debug("drag", String.format(Locale.US,
 170                             "Ignoring request to move an account from position %d to %d",
 171                             fromPosition, toPosition));
 172                     return false;
 173                 }
 174
 175                 Logger.debug("drag",
 176                         String.format(Locale.US, "Moving account from %d to %d", fromPosition,
 177                                 toPosition));
 178                 mModel.moveItem(fromPosition, toPosition);
 179
 180                 return true;
 181             }
 182             @Override
 183             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 184                 int pos = viewHolder.getAdapterPosition();
 185                 mModel.removeItem(pos);
 186             }
 187         });
 188     }
 189     @Override
 190     public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
 191         super.onAttachedToRecyclerView(recyclerView);
 192
 193         itemTouchHelper.attachToRecyclerView(recyclerView);
 194     }
 195     @Override
 196     public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) {
 197         super.onDetachedFromRecyclerView(recyclerView);
 198
 199         itemTouchHelper.attachToRecyclerView(null);
 200     }
 201     @Override
 202     public long getItemId(int position) {
 203         // header item is always first and IDs id may duplicate some of the account IDs
 204         if (position == 0)
 205             return 0;
 206         TemplateDetailsItem.AccountRow accRow = differ.getCurrentList()
 207                                                       .get(position)
 208                                                       .asAccountRowItem();
 209         return accRow.getId();
 210     }
 211     @Override
 212     public int getItemViewType(int position) {
 213
 214         return differ.getCurrentList()
 215                      .get(position)
 216                      .getType()
 217                      .toInt();
 218     }
 219     @NonNull
 220     @Override
 221     public TemplateDetailsAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent,
 222                                                                 int viewType) {
 223         final LayoutInflater inflater = LayoutInflater.from(parent.getContext());
 224         switch (viewType) {
 225             case TemplateDetailsItem.TYPE.header:
 226                 return new Header(TemplateDetailsHeaderBinding.inflate(inflater, parent, false));
 227             case TemplateDetailsItem.TYPE.accountItem:
 228                 return new AccountRow(
 229                         TemplateDetailsAccountBinding.inflate(inflater, parent, false));
 230             default:
 231                 throw new IllegalStateException("Unsupported view type " + viewType);
 232         }
 233     }
 234     @Override
 235     public void onBindViewHolder(@NonNull TemplateDetailsAdapter.ViewHolder holder, int position) {
 236         TemplateDetailsItem item = differ.getCurrentList()
 237                                          .get(position);
 238         holder.bind(item);
 239     }
 240     @Override
 241     public int getItemCount() {
 242         return differ.getCurrentList()
 243                      .size();
 244     }
 245     public void setItems(List<TemplateDetailsItem> items) {
 246         if (BuildConfig.DEBUG) {
 247             Logger.debug("tmpl", "Got new list");
 248             for (int i = 1; i < items.size(); i++) {
 249                 final TemplateDetailsItem item = items.get(i);
 250                 Logger.debug("tmpl",
 251                         String.format(Locale.US, "  %d: id %d, pos %d", i, item.getId(), item.getPosition()));
 252             }
 253         }
 254         differ.submitList(items);
 255     }
 256     public String getMatchGroupText(int groupNumber) {
 257         TemplateDetailsItem.Header header = getHeader();
 258         Pattern p = header.getCompiledPattern();
 259         if (p == null)
 260             return null;
 261
 262         final String testText = Misc.nullIsEmpty(header.getTestText());
 263         Matcher m = p.matcher(testText);
 264         if (m.matches() && m.groupCount() >= groupNumber)
 265             return m.group(groupNumber);
 266         else
 267             return null;
 268     }
 269     protected TemplateDetailsItem.Header getHeader() {
 270         return differ.getCurrentList()
 271                      .get(0)
 272                      .asHeaderItem();
 273     }
 274
 275     private enum HeaderDetail {DESCRIPTION, COMMENT, DATE_YEAR, DATE_MONTH, DATE_DAY}
 276
 277     private enum AccDetail {ACCOUNT, COMMENT, AMOUNT}
 278
 279     public abstract static class ViewHolder extends RecyclerView.ViewHolder {
 280         ViewHolder(@NonNull View itemView) {
 281             super(itemView);
 282         }
 283         abstract void bind(TemplateDetailsItem item);
 284     }
 285
 286     private abstract static class BaseItem extends ViewHolder {
 287         boolean updatePropagationDisabled = false;
 288         BaseItem(@NonNull View itemView) {
 289             super(itemView);
 290         }
 291         void disableUpdatePropagation() {
 292             updatePropagationDisabled = true;
 293         }
 294         void enableUpdatePropagation() {
 295             updatePropagationDisabled = false;
 296         }
 297     }
 298
 299     public class Header extends BaseItem {
 300         private final TemplateDetailsHeaderBinding b;
 301         boolean updatePropagationDisabled = false;
 302         public Header(@NonNull TemplateDetailsHeaderBinding binding) {
 303             super(binding.getRoot());
 304             b = binding;
 305
 306             TextWatcher templateNameWatcher = new TextWatcher() {
 307                 @Override
 308                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 309                 @Override
 310                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 311                 @Override
 312                 public void afterTextChanged(Editable s) {
 313                     if (updatePropagationDisabled)
 314                         return;
 315
 316                     final TemplateDetailsItem.Header header = getItem();
 317                     Logger.debug(D_TEMPLATE_UI,
 318                             "Storing changed template name " + s + "; header=" + header);
 319                     header.setName(String.valueOf(s));
 320                 }
 321             };
 322             b.templateName.addTextChangedListener(templateNameWatcher);
 323
 324             TextWatcher patternWatcher = new TextWatcher() {
 325                 @Override
 326                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 327                 @Override
 328                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 329                 @Override
 330                 public void afterTextChanged(Editable s) {
 331                     if (updatePropagationDisabled)
 332                         return;
 333
 334                     final TemplateDetailsItem.Header header = getItem();
 335                     Logger.debug(D_TEMPLATE_UI,
 336                             "Storing changed pattern " + s + "; header=" + header);
 337                     header.setPattern(String.valueOf(s));
 338
 339                     checkPatternError(header);
 340                 }
 341             };
 342             b.pattern.addTextChangedListener(patternWatcher);
 343
 344             TextWatcher testTextWatcher = new TextWatcher() {
 345                 @Override
 346                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 347                 @Override
 348                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 349                 @Override
 350                 public void afterTextChanged(Editable s) {
 351                     if (updatePropagationDisabled)
 352                         return;
 353
 354                     final TemplateDetailsItem.Header header = getItem();
 355                     Logger.debug(D_TEMPLATE_UI,
 356                             "Storing changed test text " + s + "; header=" + header);
 357                     header.setTestText(String.valueOf(s));
 358
 359                     checkPatternError(header);
 360                 }
 361             };
 362             b.testText.addTextChangedListener(testTextWatcher);
 363
 364             TextWatcher transactionDescriptionWatcher = new TextWatcher() {
 365                 @Override
 366                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 367                 }
 368                 @Override
 369                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 370                 }
 371                 @Override
 372                 public void afterTextChanged(Editable s) {
 373                     if (updatePropagationDisabled)
 374                         return;
 375
 376                     final TemplateDetailsItem.Header header = getItem();
 377                     Logger.debug(D_TEMPLATE_UI,
 378                             "Storing changed transaction description " + s + "; header=" + header);
 379                     header.setTransactionDescription(String.valueOf(s));
 380                 }
 381             };
 382             b.transactionDescription.addTextChangedListener(transactionDescriptionWatcher);
 383             TextWatcher transactionCommentWatcher = new TextWatcher() {
 384                 @Override
 385                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 386                 }
 387                 @Override
 388                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 389                 }
 390                 @Override
 391                 public void afterTextChanged(Editable s) {
 392                     if (updatePropagationDisabled)
 393                         return;
 394
 395                     final TemplateDetailsItem.Header header = getItem();
 396                     Logger.debug(D_TEMPLATE_UI,
 397                             "Storing changed transaction description " + s + "; header=" + header);
 398                     header.setTransactionComment(String.valueOf(s));
 399                 }
 400             };
 401             b.transactionComment.addTextChangedListener(transactionCommentWatcher);
 402         }
 403         @NotNull
 404         private TemplateDetailsItem.Header getItem() {
 405             int pos = getAdapterPosition();
 406             return differ.getCurrentList()
 407                          .get(pos)
 408                          .asHeaderItem();
 409         }
 410         private void selectHeaderDetailSource(View v, HeaderDetail detail) {
 411             TemplateDetailsItem.Header header = getItem();
 412             Logger.debug(D_TEMPLATE_UI, "header is " + header);
 413             TemplateDetailSourceSelectorFragment sel =
 414                     TemplateDetailSourceSelectorFragment.newInstance(1, header.getPattern(),
 415                             header.getTestText());
 416             sel.setOnSourceSelectedListener((literal, group) -> {
 417                 if (literal) {
 418                     switch (detail) {
 419                         case DESCRIPTION:
 420                             header.switchToLiteralTransactionDescription();
 421                             break;
 422                         case COMMENT:
 423                             header.switchToLiteralTransactionComment();
 424                             break;
 425                         case DATE_YEAR:
 426                             header.switchToLiteralDateYear();
 427                             break;
 428                         case DATE_MONTH:
 429                             header.switchToLiteralDateMonth();
 430                             break;
 431                         case DATE_DAY:
 432                             header.switchToLiteralDateDay();
 433                             break;
 434                         default:
 435                             throw new IllegalStateException("Unexpected detail " + detail);
 436                     }
 437                 }
 438                 else {
 439                     switch (detail) {
 440                         case DESCRIPTION:
 441                             header.setTransactionDescriptionMatchGroup(group);
 442                             break;
 443                         case COMMENT:
 444                             header.setTransactionCommentMatchGroup(group);
 445                             break;
 446                         case DATE_YEAR:
 447                             header.setDateYearMatchGroup(group);
 448                             break;
 449                         case DATE_MONTH:
 450                             header.setDateMonthMatchGroup(group);
 451                             break;
 452                         case DATE_DAY:
 453                             header.setDateDayMatchGroup(group);
 454                             break;
 455                         default:
 456                             throw new IllegalStateException("Unexpected detail " + detail);
 457                     }
 458                 }
 459
 460                 notifyItemChanged(getAdapterPosition());
 461             });
 462             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 463             sel.show(activity.getSupportFragmentManager(), "template-details-source-selector");
 464         }
 465         @Override
 466         void bind(TemplateDetailsItem item) {
 467             TemplateDetailsItem.Header header = item.asHeaderItem();
 468             Logger.debug(D_TEMPLATE_UI, "Binding to header " + header);
 469
 470             disableUpdatePropagation();
 471             try {
 472                 String groupNoText = b.getRoot()
 473                                       .getResources()
 474                                       .getString(R.string.template_item_match_group_source);
 475
 476                 b.templateName.setText(header.getName());
 477                 b.pattern.setText(header.getPattern());
 478                 b.testText.setText(header.getTestText());
 479
 480                 if (header.hasLiteralDateYear()) {
 481                     b.templateDetailsYearSource.setText(R.string.template_details_source_literal);
 482                     final Integer dateYear = header.getDateYear();
 483                     b.templateDetailsDateYear.setText(
 484                             (dateYear == null) ? null : String.valueOf(dateYear));
 485                     b.templateDetailsDateYearLayout.setVisibility(View.VISIBLE);
 486                 }
 487                 else {
 488                     b.templateDetailsDateYearLayout.setVisibility(View.GONE);
 489                     b.templateDetailsYearSource.setText(
 490                             String.format(Locale.US, groupNoText, header.getDateYearMatchGroup(),
 491                                     getMatchGroupText(header.getDateYearMatchGroup())));
 492                 }
 493                 b.templateDetailsYearSourceLabel.setOnClickListener(
 494                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_YEAR));
 495                 b.templateDetailsYearSource.setOnClickListener(
 496                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_YEAR));
 497
 498                 if (header.hasLiteralDateMonth()) {
 499                     b.templateDetailsMonthSource.setText(R.string.template_details_source_literal);
 500                     final Integer dateMonth = header.getDateMonth();
 501                     b.templateDetailsDateMonth.setText(
 502                             (dateMonth == null) ? null : String.valueOf(dateMonth));
 503                     b.templateDetailsDateMonthLayout.setVisibility(View.VISIBLE);
 504                 }
 505                 else {
 506                     b.templateDetailsDateMonthLayout.setVisibility(View.GONE);
 507                     b.templateDetailsMonthSource.setText(
 508                             String.format(Locale.US, groupNoText, header.getDateMonthMatchGroup(),
 509                                     getMatchGroupText(header.getDateMonthMatchGroup())));
 510                 }
 511                 b.templateDetailsMonthSourceLabel.setOnClickListener(
 512                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_MONTH));
 513                 b.templateDetailsMonthSource.setOnClickListener(
 514                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_MONTH));
 515
 516                 if (header.hasLiteralDateDay()) {
 517                     b.templateDetailsDaySource.setText(R.string.template_details_source_literal);
 518                     final Integer dateDay = header.getDateDay();
 519                     b.templateDetailsDateDay.setText(
 520                             (dateDay == null) ? null : String.valueOf(dateDay));
 521                     b.templateDetailsDateDayLayout.setVisibility(View.VISIBLE);
 522                 }
 523                 else {
 524                     b.templateDetailsDateDayLayout.setVisibility(View.GONE);
 525                     b.templateDetailsDaySource.setText(
 526                             String.format(Locale.US, groupNoText, header.getDateDayMatchGroup(),
 527                                     getMatchGroupText(header.getDateDayMatchGroup())));
 528                 }
 529                 b.templateDetailsDaySourceLabel.setOnClickListener(
 530                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_DAY));
 531                 b.templateDetailsDaySource.setOnClickListener(
 532                         v -> selectHeaderDetailSource(v, HeaderDetail.DATE_DAY));
 533
 534                 if (header.hasLiteralTransactionDescription()) {
 535                     b.templateTransactionDescriptionSource.setText(
 536                             R.string.template_details_source_literal);
 537                     b.transactionDescription.setText(header.getTransactionDescription());
 538                     b.transactionDescriptionLayout.setVisibility(View.VISIBLE);
 539                 }
 540                 else {
 541                     b.transactionDescriptionLayout.setVisibility(View.GONE);
 542                     b.templateTransactionDescriptionSource.setText(
 543                             String.format(Locale.US, groupNoText,
 544                                     header.getTransactionDescriptionMatchGroup(), getMatchGroupText(
 545                                             header.getTransactionDescriptionMatchGroup())));
 546
 547                 }
 548                 b.templateTransactionDescriptionSourceLabel.setOnClickListener(
 549                         v -> selectHeaderDetailSource(v, HeaderDetail.DESCRIPTION));
 550                 b.templateTransactionDescriptionSource.setOnClickListener(
 551                         v -> selectHeaderDetailSource(v, HeaderDetail.DESCRIPTION));
 552
 553                 if (header.hasLiteralTransactionComment()) {
 554                     b.templateTransactionCommentSource.setText(
 555                             R.string.template_details_source_literal);
 556                     b.transactionComment.setText(header.getTransactionComment());
 557                     b.transactionCommentLayout.setVisibility(View.VISIBLE);
 558                 }
 559                 else {
 560                     b.transactionCommentLayout.setVisibility(View.GONE);
 561                     b.templateTransactionCommentSource.setText(String.format(Locale.US, groupNoText,
 562                             header.getTransactionCommentMatchGroup(),
 563                             getMatchGroupText(header.getTransactionCommentMatchGroup())));
 564
 565                 }
 566                 b.templateTransactionCommentSourceLabel.setOnClickListener(
 567                         v -> selectHeaderDetailSource(v, HeaderDetail.COMMENT));
 568                 b.templateTransactionCommentSource.setOnClickListener(
 569                         v -> selectHeaderDetailSource(v, HeaderDetail.COMMENT));
 570
 571                 b.templateDetailsHeadScanQrButton.setOnClickListener(this::scanTestQR);
 572
 573                 checkPatternError(header);
 574             }
 575             finally {
 576                 enableUpdatePropagation();
 577             }
 578         }
 579         private void checkPatternError(TemplateDetailsItem.Header item) {
 580             if (item.getPatternError() != null) {
 581                 b.patternLayout.setError(item.getPatternError());
 582                 b.patternHintTitle.setVisibility(View.GONE);
 583                 b.patternHintText.setVisibility(View.GONE);
 584             }
 585             else {
 586                 b.patternLayout.setError(null);
 587                 if (item.testMatch() != null) {
 588                     b.patternHintText.setText(item.testMatch());
 589                     b.patternHintTitle.setVisibility(View.VISIBLE);
 590                     b.patternHintText.setVisibility(View.VISIBLE);
 591                 }
 592                 else {
 593                     b.patternLayout.setError(null);
 594                     b.patternHintTitle.setVisibility(View.GONE);
 595                     b.patternHintText.setVisibility(View.GONE);
 596                 }
 597             }
 598
 599         }
 600         private void scanTestQR(View view) {
 601             QRScanCapableFragment.triggerQRScan();
 602         }
 603     }
 604
 605     public class AccountRow extends BaseItem {
 606         private final TemplateDetailsAccountBinding b;
 607         public AccountRow(@NonNull TemplateDetailsAccountBinding binding) {
 608             super(binding.getRoot());
 609             b = binding;
 610
 611             TextWatcher accountNameWatcher = new TextWatcher() {
 612                 @Override
 613                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 614                 @Override
 615                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 616                 @Override
 617                 public void afterTextChanged(Editable s) {
 618                     if (updatePropagationDisabled)
 619                         return;
 620
 621                     TemplateDetailsItem.AccountRow accRow = getItem();
 622                     Logger.debug(D_TEMPLATE_UI,
 623                             "Storing changed account name " + s + "; accRow=" + accRow);
 624                     accRow.setAccountName(String.valueOf(s));
 625                 }
 626             };
 627             b.templateDetailsAccountName.addTextChangedListener(accountNameWatcher);
 628             b.templateDetailsAccountName.setAdapter(new AccountAutocompleteAdapter(b.getRoot()
 629                                                                                     .getContext()));
 630             b.templateDetailsAccountName.setOnItemClickListener(
 631                     (parent, view, position, id) -> b.templateDetailsAccountName.setText(
 632                             ((TextView) view).getText()));
 633             TextWatcher accountCommentWatcher = new TextWatcher() {
 634                 @Override
 635                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 636                 @Override
 637                 public void onTextChanged(CharSequence s, int start, int before, int count) {}
 638                 @Override
 639                 public void afterTextChanged(Editable s) {
 640                     if (updatePropagationDisabled)
 641                         return;
 642
 643                     TemplateDetailsItem.AccountRow accRow = getItem();
 644                     Logger.debug(D_TEMPLATE_UI,
 645                             "Storing changed account comment " + s + "; accRow=" + accRow);
 646                     accRow.setAccountComment(String.valueOf(s));
 647                 }
 648             };
 649             b.templateDetailsAccountComment.addTextChangedListener(accountCommentWatcher);
 650
 651             b.templateDetailsAccountAmount.addTextChangedListener(new TextWatcher() {
 652                 @Override
 653                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 654
 655                 }
 656                 @Override
 657                 public void onTextChanged(CharSequence s, int start, int before, int count) {
 658
 659                 }
 660                 @Override
 661                 public void afterTextChanged(Editable s) {
 662                     if (updatePropagationDisabled)
 663                         return;
 664
 665                     TemplateDetailsItem.AccountRow accRow = getItem();
 666
 667                     String str = String.valueOf(s);
 668                     if (Misc.emptyIsNull(str) == null) {
 669                         accRow.setAmount(null);
 670                     }
 671                     else {
 672                         try {
 673                             final float amount = Data.parseNumber(str);
 674                             accRow.setAmount(amount);
 675                             b.templateDetailsAccountAmountLayout.setError(null);
 676
 677                             Logger.debug(D_TEMPLATE_UI, String.format(Locale.US,
 678                                     "Storing changed account amount %s [%4.2f]; accRow=%s", s,
 679                                     amount, accRow));
 680                         }
 681                         catch (NumberFormatException | ParseException e) {
 682                             b.templateDetailsAccountAmountLayout.setError("!");
 683                         }
 684                     }
 685                 }
 686             });
 687             b.templateDetailsAccountAmount.setOnFocusChangeListener((v, hasFocus) -> {
 688                 if (hasFocus)
 689                     return;
 690
 691                 TemplateDetailsItem.AccountRow accRow = getItem();
 692                 if (!accRow.hasLiteralAmount())
 693                     return;
 694                 Float amt = accRow.getAmount();
 695                 if (amt == null)
 696                     return;
 697
 698                 b.templateDetailsAccountAmount.setText(Data.formatNumber(amt));
 699             });
 700
 701             b.negateAmountSwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
 702                 if (updatePropagationDisabled)
 703                     return;
 704
 705                 getItem().setNegateAmount(isChecked);
 706                 b.templateDetailsNegateAmountText.setText(
 707                         isChecked ? R.string.template_account_change_amount_sign
 708                                   : R.string.template_account_keep_amount_sign);
 709             });
 710             final View.OnClickListener negLabelClickListener =
 711                     (view) -> b.negateAmountSwitch.toggle();
 712             b.templateDetailsNegateAmountLabel.setOnClickListener(negLabelClickListener);
 713             b.templateDetailsNegateAmountText.setOnClickListener(negLabelClickListener);
 714             manageAccountLabelDrag();
 715         }
 716         @SuppressLint("ClickableViewAccessibility")
 717         public void manageAccountLabelDrag() {
 718             b.patternAccountLabel.setOnTouchListener((v, event) -> {
 719                 if (event.getAction() == MotionEvent.ACTION_DOWN) {
 720                     itemTouchHelper.startDrag(this);
 721                 }
 722                 return false;
 723             });
 724         }
 725         @Override
 726         void bind(TemplateDetailsItem item) {
 727             disableUpdatePropagation();
 728             try {
 729                 final Resources resources = b.getRoot()
 730                                              .getResources();
 731                 String groupNoText = resources.getString(R.string.template_item_match_group_source);
 732
 733                 TemplateDetailsItem.AccountRow accRow = item.asAccountRowItem();
 734                 b.patternAccountLabel.setText(String.format(Locale.US,
 735                         resources.getString(R.string.template_details_account_row_label),
 736                         accRow.getPosition()));
 737                 if (accRow.hasLiteralAccountName()) {
 738                     b.templateDetailsAccountNameLayout.setVisibility(View.VISIBLE);
 739                     b.templateDetailsAccountName.setText(accRow.getAccountName());
 740                     b.templateDetailsAccountNameSource.setText(
 741                             R.string.template_details_source_literal);
 742                 }
 743                 else {
 744                     b.templateDetailsAccountNameLayout.setVisibility(View.GONE);
 745                     b.templateDetailsAccountNameSource.setText(
 746                             String.format(Locale.US, groupNoText, accRow.getAccountNameMatchGroup(),
 747                                     getMatchGroupText(accRow.getAccountNameMatchGroup())));
 748                 }
 749
 750                 if (accRow.hasLiteralAccountComment()) {
 751                     b.templateDetailsAccountCommentLayout.setVisibility(View.VISIBLE);
 752                     b.templateDetailsAccountComment.setText(accRow.getAccountComment());
 753                     b.templateDetailsAccountCommentSource.setText(
 754                             R.string.template_details_source_literal);
 755                 }
 756                 else {
 757                     b.templateDetailsAccountCommentLayout.setVisibility(View.GONE);
 758                     b.templateDetailsAccountCommentSource.setText(
 759                             String.format(Locale.US, groupNoText,
 760                                     accRow.getAccountCommentMatchGroup(),
 761                                     getMatchGroupText(accRow.getAccountCommentMatchGroup())));
 762                 }
 763
 764                 if (accRow.hasLiteralAmount()) {
 765                     b.templateDetailsAccountAmountSource.setText(
 766                             R.string.template_details_source_literal);
 767                     b.templateDetailsAccountAmount.setVisibility(View.VISIBLE);
 768                     Float amt = accRow.getAmount();
 769                     b.templateDetailsAccountAmount.setText((amt == null) ? null : String.format(
 770                             Data.locale.getValue(), "%,4.2f", (accRow.getAmount())));
 771                     b.negateAmountSwitch.setVisibility(View.GONE);
 772                     b.templateDetailsNegateAmountLabel.setVisibility(View.GONE);
 773                     b.templateDetailsNegateAmountText.setVisibility(View.GONE);
 774                 }
 775                 else {
 776                     b.templateDetailsAccountAmountSource.setText(
 777                             String.format(Locale.US, groupNoText, accRow.getAmountMatchGroup(),
 778                                     getMatchGroupText(accRow.getAmountMatchGroup())));
 779                     b.templateDetailsAccountAmountLayout.setVisibility(View.GONE);
 780                     b.negateAmountSwitch.setVisibility(View.VISIBLE);
 781                     b.negateAmountSwitch.setChecked(accRow.isNegateAmount());
 782                     b.templateDetailsNegateAmountText.setText(
 783                             accRow.isNegateAmount() ? R.string.template_account_change_amount_sign
 784                                                     : R.string.template_account_keep_amount_sign);
 785                     b.templateDetailsNegateAmountLabel.setVisibility(View.VISIBLE);
 786                     b.templateDetailsNegateAmountText.setVisibility(View.VISIBLE);
 787                 }
 788
 789                 b.templateAccountNameSourceLabel.setOnClickListener(
 790                         v -> selectAccountRowDetailSource(v, AccDetail.ACCOUNT));
 791                 b.templateDetailsAccountNameSource.setOnClickListener(
 792                         v -> selectAccountRowDetailSource(v, AccDetail.ACCOUNT));
 793                 b.templateAccountCommentSourceLabel.setOnClickListener(
 794                         v -> selectAccountRowDetailSource(v, AccDetail.COMMENT));
 795                 b.templateDetailsAccountCommentSource.setOnClickListener(
 796                         v -> selectAccountRowDetailSource(v, AccDetail.COMMENT));
 797                 b.templateAccountAmountSourceLabel.setOnClickListener(
 798                         v -> selectAccountRowDetailSource(v, AccDetail.AMOUNT));
 799                 b.templateDetailsAccountAmountSource.setOnClickListener(
 800                         v -> selectAccountRowDetailSource(v, AccDetail.AMOUNT));
 801             }
 802             finally {
 803                 enableUpdatePropagation();
 804             }
 805         }
 806         private @NotNull TemplateDetailsItem.AccountRow getItem() {
 807             return differ.getCurrentList()
 808                          .get(getAdapterPosition())
 809                          .asAccountRowItem();
 810         }
 811         private void selectAccountRowDetailSource(View v, AccDetail detail) {
 812             TemplateDetailsItem.AccountRow accRow = getItem();
 813             final TemplateDetailsItem.Header header = getHeader();
 814             Logger.debug(D_TEMPLATE_UI, "header is " + header);
 815             TemplateDetailSourceSelectorFragment sel =
 816                     TemplateDetailSourceSelectorFragment.newInstance(1, header.getPattern(),
 817                             header.getTestText());
 818             sel.setOnSourceSelectedListener((literal, group) -> {
 819                 if (literal) {
 820                     switch (detail) {
 821                         case ACCOUNT:
 822                             accRow.switchToLiteralAccountName();
 823                             break;
 824                         case COMMENT:
 825                             accRow.switchToLiteralAccountComment();
 826                             break;
 827                         case AMOUNT:
 828                             accRow.switchToLiteralAmount();
 829                             break;
 830                         default:
 831                             throw new IllegalStateException("Unexpected detail " + detail);
 832                     }
 833                 }
 834                 else {
 835                     switch (detail) {
 836                         case ACCOUNT:
 837                             accRow.setAccountNameMatchGroup(group);
 838                             break;
 839                         case COMMENT:
 840                             accRow.setAccountCommentMatchGroup(group);
 841                             break;
 842                         case AMOUNT:
 843                             accRow.setAmountMatchGroup(group);
 844                             break;
 845                         default:
 846                             throw new IllegalStateException("Unexpected detail " + detail);
 847                     }
 848                 }
 849
 850                 notifyItemChanged(getAdapterPosition());
 851             });
 852             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 853             sel.show(activity.getSupportFragmentManager(), "template-details-source-selector");
 854         }
 855     }
 856 }