app/src/main/java/net/ktnx/mobileledger/ui/new_transaction/NewTransactionItemHolder.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.new_transaction;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextUtils;
  24 import android.text.TextWatcher;
  25 import android.view.Gravity;
  26 import android.view.View;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.EditText;
  29 import android.widget.SimpleCursorAdapter;
  30 import android.widget.TextView;
  31
  32 import androidx.annotation.ColorInt;
  33 import androidx.annotation.NonNull;
  34 import androidx.constraintlayout.widget.ConstraintLayout;
  35 import androidx.recyclerview.widget.RecyclerView;
  36
  37 import net.ktnx.mobileledger.R;
  38 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  39 import net.ktnx.mobileledger.databinding.NewTransactionRowBinding;
  40 import net.ktnx.mobileledger.db.AccountAutocompleteAdapter;
  41 import net.ktnx.mobileledger.model.Currency;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  44 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  45 import net.ktnx.mobileledger.ui.DatePickerFragment;
  46 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  47 import net.ktnx.mobileledger.utils.DimensionUtils;
  48 import net.ktnx.mobileledger.utils.Logger;
  49 import net.ktnx.mobileledger.utils.MLDB;
  50 import net.ktnx.mobileledger.utils.Misc;
  51 import net.ktnx.mobileledger.utils.SimpleDate;
  52
  53 import java.text.DecimalFormatSymbols;
  54 import java.text.ParseException;
  55 import java.util.Objects;
  56
  57 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  58         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  59     private final String decimalDot = ".";
  60     private final MobileLedgerProfile mProfile;
  61     private final NewTransactionRowBinding b;
  62     private final NewTransactionItemsAdapter mAdapter;
  63     private boolean ignoreFocusChanges = false;
  64     private String decimalSeparator;
  65     private boolean inUpdate = false;
  66     private boolean syncingData = false;
  67     //TODO multiple amounts with different currencies per posting?
  68     NewTransactionItemHolder(@NonNull NewTransactionRowBinding b,
  69                              NewTransactionItemsAdapter adapter) {
  70         super(b.getRoot());
  71         this.b = b;
  72         this.mAdapter = adapter;
  73         new TextViewClearHelper().attachToTextView(b.comment);
  74
  75         b.newTransactionDescription.setNextFocusForwardId(View.NO_ID);
  76         b.accountRowAccName.setNextFocusForwardId(View.NO_ID);
  77         b.accountRowAccAmounts.setNextFocusForwardId(View.NO_ID); // magic!
  78
  79         b.newTransactionDate.setOnClickListener(v -> pickTransactionDate());
  80
  81         b.accountCommentButton.setOnClickListener(v -> {
  82             b.comment.setVisibility(View.VISIBLE);
  83             b.comment.requestFocus();
  84         });
  85
  86         b.transactionCommentButton.setOnClickListener(v -> {
  87             b.transactionComment.setVisibility(View.VISIBLE);
  88             b.transactionComment.requestFocus();
  89         });
  90
  91         mProfile = Data.getProfile();
  92
  93         @SuppressLint("DefaultLocale") View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
  94             final int id = v.getId();
  95             if (hasFocus) {
  96                 boolean wasSyncing = syncingData;
  97                 syncingData = true;
  98                 try {
  99                     final int pos = getAdapterPosition();
 100                     if (id == R.id.account_row_acc_name) {
 101                         adapter.noteFocusIsOnAccount(pos);
 102                     }
 103                     else if (id == R.id.account_row_acc_amounts) {
 104                         adapter.noteFocusIsOnAmount(pos);
 105                     }
 106                     else if (id == R.id.comment) {
 107                         adapter.noteFocusIsOnComment(pos);
 108                     }
 109                     else if (id == R.id.transaction_comment) {
 110                         adapter.noteFocusIsOnTransactionComment(pos);
 111                     }
 112                     else if (id == R.id.new_transaction_description) {
 113                         adapter.noteFocusIsOnDescription(pos);
 114                     }
 115                     else
 116                         throw new IllegalStateException("Where is the focus?");
 117                 }
 118                 finally {
 119                     syncingData = wasSyncing;
 120                 }
 121             }
 122             else {  // lost focus
 123                 if (id == R.id.account_row_acc_amounts) {
 124                     try {
 125                         String input = String.valueOf(b.accountRowAccAmounts.getText());
 126                         input = input.replace(decimalSeparator, decimalDot);
 127                         final String newText = String.format("%4.2f", Float.parseFloat(input));
 128                         if (!newText.equals(input))
 129                             b.accountRowAccAmounts.setText(newText);
 130                     }
 131                     catch (NumberFormatException ex) {
 132                         // ignored
 133                     }
 134                 }
 135             }
 136
 137             if (id == R.id.comment) {
 138                 commentFocusChanged(b.comment, hasFocus);
 139             }
 140             else if (id == R.id.transaction_comment) {
 141                 commentFocusChanged(b.transactionComment, hasFocus);
 142             }
 143         };
 144
 145         b.newTransactionDescription.setOnFocusChangeListener(focusMonitor);
 146         b.accountRowAccName.setOnFocusChangeListener(focusMonitor);
 147         b.accountRowAccAmounts.setOnFocusChangeListener(focusMonitor);
 148         b.comment.setOnFocusChangeListener(focusMonitor);
 149         b.transactionComment.setOnFocusChangeListener(focusMonitor);
 150
 151         NewTransactionActivity activity = (NewTransactionActivity) b.getRoot()
 152                                                                     .getContext();
 153
 154         MLDB.hookAutocompletionAdapter(activity, b.newTransactionDescription,
 155                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, activity, mProfile);
 156         b.accountRowAccName.setAdapter(new AccountAutocompleteAdapter(b.getRoot()
 157                                                                        .getContext(), mProfile));
 158
 159         decimalSeparator = "";
 160         Data.locale.observe(activity, locale -> decimalSeparator = String.valueOf(
 161                 DecimalFormatSymbols.getInstance(locale)
 162                                     .getMonetaryDecimalSeparator()));
 163
 164         final TextWatcher tw = new TextWatcher() {
 165             @Override
 166             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 167             }
 168
 169             @Override
 170             public void onTextChanged(CharSequence s, int start, int before, int count) {
 171             }
 172
 173             @Override
 174             public void afterTextChanged(Editable s) {
 175 //                debug("input", "text changed");
 176                 if (inUpdate)
 177                     return;
 178
 179                 Logger.debug("textWatcher", "calling syncData()");
 180                 if (syncData()) {
 181                     Logger.debug("textWatcher",
 182                             "syncData() returned, checking if transaction is submittable");
 183                     adapter.model.checkTransactionSubmittable(null);
 184                 }
 185                 Logger.debug("textWatcher", "done");
 186             }
 187         };
 188         final TextWatcher amountWatcher = new TextWatcher() {
 189             @Override
 190             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 191             @Override
 192             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 193             @Override
 194             public void afterTextChanged(Editable s) {
 195                 checkAmountValid(s.toString());
 196
 197                 if (syncData())
 198                     adapter.model.checkTransactionSubmittable(null);
 199             }
 200         };
 201         b.newTransactionDescription.addTextChangedListener(tw);
 202         monitorComment(b.transactionComment);
 203         b.accountRowAccName.addTextChangedListener(tw);
 204         monitorComment(b.comment);
 205         b.accountRowAccAmounts.addTextChangedListener(amountWatcher);
 206
 207         b.currencyButton.setOnClickListener(v -> {
 208             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 209             cpf.showPositionAndPadding();
 210             cpf.setOnCurrencySelectedListener(
 211                     c -> adapter.setItemCurrency(getAdapterPosition(), c.getName()));
 212             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 213         });
 214
 215         commentFocusChanged(b.transactionComment, false);
 216         commentFocusChanged(b.comment, false);
 217
 218         adapter.model.getFocusInfo()
 219                      .observe(activity, this::applyFocus);
 220
 221         Data.currencyGap.observe(activity,
 222                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 223                         hasGap));
 224
 225         Data.currencySymbolPosition.observe(activity,
 226                 position -> updateCurrencyPositionAndPadding(position,
 227                         Data.currencyGap.getValue()));
 228
 229         adapter.model.getShowCurrency()
 230                      .observe(activity, showCurrency -> {
 231                          if (showCurrency) {
 232                              b.currency.setVisibility(View.VISIBLE);
 233                              b.currencyButton.setVisibility(View.VISIBLE);
 234                              setCurrencyString(mProfile.getDefaultCommodity());
 235                          }
 236                          else {
 237                              b.currency.setVisibility(View.GONE);
 238                              b.currencyButton.setVisibility(View.GONE);
 239                              setCurrencyString(null);
 240                          }
 241                      });
 242
 243         adapter.model.getShowComments()
 244                      .observe(activity, show -> {
 245                          ConstraintLayout.LayoutParams amountLayoutParams =
 246                                  (ConstraintLayout.LayoutParams) b.amountLayout.getLayoutParams();
 247                          ConstraintLayout.LayoutParams accountParams =
 248                                  (ConstraintLayout.LayoutParams) b.accountRowAccName.getLayoutParams();
 249
 250                          if (show) {
 251                              accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 252                              accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 253
 254                              amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 255                              amountLayoutParams.topToBottom = b.accountRowAccName.getId();
 256
 257                              b.commentLayout.setVisibility(View.VISIBLE);
 258                          }
 259                          else {
 260                              accountParams.endToStart = b.amountLayout.getId();
 261                              accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 262
 263                              amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 264                              amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 265
 266                              b.commentLayout.setVisibility(View.GONE);
 267                          }
 268
 269                          b.accountRowAccName.setLayoutParams(accountParams);
 270                          b.amountLayout.setLayoutParams(amountLayoutParams);
 271
 272                          b.transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 273                      });
 274     }
 275     private void applyFocus(NewTransactionModel.FocusInfo focusInfo) {
 276         if (ignoreFocusChanges) {
 277             Logger.debug("new-trans", "Ignoring focus change");
 278             return;
 279         }
 280         ignoreFocusChanges = true;
 281         try {
 282             if (((focusInfo == null) || (focusInfo.element == null) ||
 283                  focusInfo.position != getAdapterPosition()))
 284                 return;
 285
 286             NewTransactionModel.Item item = getItem();
 287             if (item instanceof NewTransactionModel.TransactionHead) {
 288                 NewTransactionModel.TransactionHead head = item.toTransactionHead();
 289                 // bad idea - double pop-up, and not really necessary.
 290                 // the user can tap the input to get the calendar
 291                 //if (!tvDate.hasFocus()) tvDate.requestFocus();
 292                 switch (focusInfo.element) {
 293                     case TransactionComment:
 294                         b.transactionComment.setVisibility(View.VISIBLE);
 295                         b.transactionComment.requestFocus();
 296                         break;
 297                     case Description:
 298                         boolean focused = b.newTransactionDescription.requestFocus();
 299 //                            tvDescription.dismissDropDown();
 300                         if (focused)
 301                             Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 302                                                                             .getContext());
 303                         break;
 304                 }
 305             }
 306             else if (item instanceof NewTransactionModel.TransactionAccount) {
 307                 NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 308                 switch (focusInfo.element) {
 309                     case Amount:
 310                         b.accountRowAccAmounts.requestFocus();
 311                         break;
 312                     case Comment:
 313                         b.comment.setVisibility(View.VISIBLE);
 314                         b.comment.requestFocus();
 315                         break;
 316                     case Account:
 317                         boolean focused = b.accountRowAccName.requestFocus();
 318 //                                         b.accountRowAccName.dismissDropDown();
 319                         if (focused)
 320                             Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 321                                                                             .getContext());
 322                         break;
 323                 }
 324             }
 325         }
 326         finally {
 327             ignoreFocusChanges = false;
 328         }
 329     }
 330     public void checkAmountValid(String s) {
 331         boolean valid = true;
 332         try {
 333             if (s.length() > 0) {
 334                 float ignored = Float.parseFloat(s.replace(decimalSeparator, decimalDot));
 335             }
 336         }
 337         catch (NumberFormatException ex) {
 338             valid = false;
 339         }
 340
 341         displayAmountValidity(valid);
 342     }
 343     private void displayAmountValidity(boolean valid) {
 344         b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 345                 valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 346         b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 347     }
 348     private void monitorComment(EditText editText) {
 349         editText.addTextChangedListener(new TextWatcher() {
 350             @Override
 351             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 352             }
 353             @Override
 354             public void onTextChanged(CharSequence s, int start, int before, int count) {
 355             }
 356             @Override
 357             public void afterTextChanged(Editable s) {
 358 //                debug("input", "text changed");
 359                 if (inUpdate)
 360                     return;
 361
 362                 Logger.debug("textWatcher", "calling syncData()");
 363                 syncData();
 364                 Logger.debug("textWatcher",
 365                         "syncData() returned, checking if transaction is submittable");
 366                 styleComment(editText, s.toString());
 367                 Logger.debug("textWatcher", "done");
 368             }
 369         });
 370     }
 371     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 372         @ColorInt int textColor;
 373         textColor = b.dummyText.getTextColors()
 374                                .getDefaultColor();
 375         if (hasFocus) {
 376             textView.setTypeface(null, Typeface.NORMAL);
 377             textView.setHint(R.string.transaction_account_comment_hint);
 378         }
 379         else {
 380             int alpha = (textColor >> 24 & 0xff);
 381             alpha = 3 * alpha / 4;
 382             textColor = (alpha << 24) | (0x00ffffff & textColor);
 383             textView.setTypeface(null, Typeface.ITALIC);
 384             textView.setHint("");
 385             if (TextUtils.isEmpty(textView.getText())) {
 386                 textView.setVisibility(View.INVISIBLE);
 387             }
 388         }
 389         textView.setTextColor(textColor);
 390
 391     }
 392     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 393         ConstraintLayout.LayoutParams amountLP =
 394                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 395         ConstraintLayout.LayoutParams currencyLP =
 396                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 397
 398         if (position == Currency.Position.before) {
 399             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 400             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 401
 402             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 403             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 404             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 405             amountLP.startToEnd = b.currency.getId();
 406
 407             b.currency.setGravity(Gravity.END);
 408         }
 409         else {
 410             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 411             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 412
 413             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 414             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 415             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 416             amountLP.endToStart = b.currency.getId();
 417
 418             b.currency.setGravity(Gravity.START);
 419         }
 420
 421         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 422         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 423
 424         b.accountRowAccAmounts.setLayoutParams(amountLP);
 425         b.currency.setLayoutParams(currencyLP);
 426
 427         // distance between the amount and the currency symbol
 428         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 429
 430         if (position == Currency.Position.before) {
 431             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 432         }
 433         else {
 434             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 435         }
 436     }
 437     private void setCurrencyString(String currency) {
 438         @ColorInt int textColor = b.dummyText.getTextColors()
 439                                              .getDefaultColor();
 440         if (TextUtils.isEmpty(currency)) {
 441             b.currency.setText(R.string.currency_symbol);
 442             int alpha = (textColor >> 24) & 0xff;
 443             alpha = alpha * 3 / 4;
 444             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 445         }
 446         else {
 447             b.currency.setText(currency);
 448             b.currency.setTextColor(textColor);
 449         }
 450     }
 451     private void setCurrency(Currency currency) {
 452         setCurrencyString((currency == null) ? null : currency.getName());
 453     }
 454     private void setEditable(Boolean editable) {
 455         b.newTransactionDate.setEnabled(editable);
 456         b.newTransactionDescription.setEnabled(editable);
 457         b.accountRowAccName.setEnabled(editable);
 458         b.accountRowAccAmounts.setEnabled(editable);
 459     }
 460     private void beginUpdates() {
 461         if (inUpdate)
 462             throw new RuntimeException("Already in update mode");
 463         inUpdate = true;
 464     }
 465     private void endUpdates() {
 466         if (!inUpdate)
 467             throw new RuntimeException("Not in update mode");
 468         inUpdate = false;
 469     }
 470     /**
 471      * syncData()
 472      * <p>
 473      * Stores the data from the UI elements into the model item
 474      * Returns true if there were changes made that suggest transaction has to be
 475      * checked for being submittable
 476      */
 477     private boolean syncData() {
 478         if (syncingData) {
 479             Logger.debug("new-trans", "skipping syncData() loop");
 480             return false;
 481         }
 482
 483         NewTransactionModel.Item item = getItem();
 484
 485         syncingData = true;
 486
 487         boolean significantChange = false;
 488
 489         try {
 490             if (item instanceof NewTransactionModel.TransactionHead) {
 491                 NewTransactionModel.TransactionHead head = item.toTransactionHead();
 492
 493                 head.setDate(String.valueOf(b.newTransactionDate.getText()));
 494
 495                 // transaction description is required
 496                 if (TextUtils.isEmpty(head.getDescription()) !=
 497                     TextUtils.isEmpty(b.newTransactionDescription.getText()))
 498                     significantChange = true;
 499
 500                 head.setDescription(String.valueOf(b.newTransactionDescription.getText()));
 501                 head.setComment(String.valueOf(b.transactionComment.getText()));
 502             }
 503             else if (item instanceof NewTransactionModel.TransactionAccount) {
 504                 NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 505
 506                 // having account name is important
 507                 final Editable incomingAccountName = b.accountRowAccName.getText();
 508                 if (TextUtils.isEmpty(acc.getAccountName()) !=
 509                     TextUtils.isEmpty(incomingAccountName))
 510                     significantChange = true;
 511
 512                 acc.setAccountName(String.valueOf(incomingAccountName));
 513                 final int accNameSelEnd = b.accountRowAccName.getSelectionEnd();
 514                 final int accNameSelStart = b.accountRowAccName.getSelectionStart();
 515                 acc.setAccountNameCursorPosition(accNameSelEnd);
 516
 517                 acc.setComment(String.valueOf(b.comment.getText()));
 518
 519                 String amount = String.valueOf(b.accountRowAccAmounts.getText());
 520                 amount = amount.trim();
 521
 522                 if (amount.isEmpty()) {
 523                     if (acc.isAmountSet())
 524                         significantChange = true;
 525                     acc.resetAmount();
 526                     acc.setAmountValid(true);
 527                 }
 528                 else {
 529                     try {
 530                         amount = amount.replace(decimalSeparator, decimalDot);
 531                         final float parsedAmount = Float.parseFloat(amount);
 532                         if (!acc.isAmountSet() || !Misc.equalFloats(parsedAmount, acc.getAmount()))
 533                             significantChange = true;
 534                         acc.setAmount(parsedAmount);
 535                         acc.setAmountValid(true);
 536                     }
 537                     catch (NumberFormatException e) {
 538                         Logger.debug("new-trans", String.format(
 539                                 "assuming amount is not set due to number format exception. " +
 540                                 "input was '%s'", amount));
 541                         if (acc.isAmountValid())
 542                             significantChange = true;
 543                         acc.setAmountValid(false);
 544                     }
 545                     final String curr = String.valueOf(b.currency.getText());
 546                     final String currValue;
 547                     if (curr.equals(b.currency.getContext()
 548                                               .getResources()
 549                                               .getString(R.string.currency_symbol)) ||
 550                         curr.isEmpty())
 551                         currValue = null;
 552                     else
 553                         currValue = curr;
 554
 555                     if (!significantChange && !TextUtils.equals(acc.getCurrency(), currValue))
 556                         significantChange = true;
 557                     acc.setCurrency(currValue);
 558                 }
 559             }
 560             else {
 561                 throw new RuntimeException("Should not happen");
 562             }
 563
 564             return significantChange;
 565         }
 566         catch (ParseException e) {
 567             throw new RuntimeException("Should not happen", e);
 568         }
 569         finally {
 570             syncingData = false;
 571         }
 572     }
 573     private void pickTransactionDate() {
 574         DatePickerFragment picker = new DatePickerFragment();
 575         picker.setFutureDates(mProfile.getFutureDates());
 576         picker.setOnDatePickedListener(this);
 577         picker.setCurrentDateFromText(b.newTransactionDate.getText());
 578         picker.show(((NewTransactionActivity) b.getRoot()
 579                                                .getContext()).getSupportFragmentManager(), null);
 580     }
 581     /**
 582      * bind
 583      *
 584      * @param item updates the UI elements with the data from the model item
 585      */
 586     @SuppressLint("DefaultLocale")
 587     public void bind(@NonNull NewTransactionModel.Item item) {
 588         beginUpdates();
 589         try {
 590             syncingData = true;
 591             try {
 592                 if (item instanceof NewTransactionModel.TransactionHead) {
 593                     NewTransactionModel.TransactionHead head = item.toTransactionHead();
 594                     b.newTransactionDate.setText(head.getFormattedDate());
 595
 596                     // avoid triggering completion pop-up
 597                     SimpleCursorAdapter a =
 598                             (SimpleCursorAdapter) b.newTransactionDescription.getAdapter();
 599                     try {
 600                         b.newTransactionDescription.setAdapter(null);
 601                         b.newTransactionDescription.setText(head.getDescription());
 602                     }
 603                     finally {
 604                         b.newTransactionDescription.setAdapter(a);
 605                     }
 606
 607                     b.transactionComment.setText(head.getComment());
 608                     //styleComment(b.transactionComment, head.getComment());
 609
 610                     b.ntrData.setVisibility(View.VISIBLE);
 611                     b.ntrAccount.setVisibility(View.GONE);
 612                     setEditable(true);
 613                 }
 614                 else if (item instanceof NewTransactionModel.TransactionAccount) {
 615                     NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 616
 617                     final String incomingAccountName = acc.getAccountName();
 618                     final String presentAccountName = String.valueOf(b.accountRowAccName.getText());
 619                     if (!TextUtils.equals(incomingAccountName, presentAccountName)) {
 620                         Logger.debug("bind",
 621                                 String.format("Setting account name from '%s' to '%s' (| @ %d)",
 622                                         presentAccountName, incomingAccountName,
 623                                         acc.getAccountNameCursorPosition()));
 624                         // avoid triggering completion pop-up
 625                         AccountAutocompleteAdapter a =
 626                                 (AccountAutocompleteAdapter) b.accountRowAccName.getAdapter();
 627                         try {
 628                             b.accountRowAccName.setAdapter(null);
 629                             b.accountRowAccName.setText(incomingAccountName);
 630                             b.accountRowAccName.setSelection(acc.getAccountNameCursorPosition());
 631                         }
 632                         finally {
 633                             b.accountRowAccName.setAdapter(a);
 634                         }
 635                     }
 636
 637                     final String amountHint = acc.getAmountHint();
 638                     if (amountHint == null) {
 639                         b.accountRowAccAmounts.setHint(R.string.zero_amount);
 640                     }
 641                     else {
 642                         b.accountRowAccAmounts.setHint(amountHint);
 643                     }
 644
 645                     b.accountRowAccAmounts.setImeOptions(
 646                             acc.isLast() ? EditorInfo.IME_ACTION_DONE : EditorInfo.IME_ACTION_NEXT);
 647
 648                     setCurrencyString(acc.getCurrency());
 649                     b.accountRowAccAmounts.setText(
 650                             acc.isAmountSet() ? String.format("%4.2f", acc.getAmount()) : null);
 651                     displayAmountValidity(true);
 652
 653                     b.comment.setText(acc.getComment());
 654
 655                     b.ntrData.setVisibility(View.GONE);
 656                     b.ntrAccount.setVisibility(View.VISIBLE);
 657
 658                     setEditable(true);
 659                 }
 660                 else {
 661                     throw new RuntimeException("Don't know how to handle " + item);
 662                 }
 663
 664                 applyFocus(mAdapter.model.getFocusInfo()
 665                                          .getValue());
 666             }
 667             finally {
 668                 syncingData = false;
 669             }
 670         }
 671         finally {
 672             endUpdates();
 673         }
 674     }
 675     private void styleComment(EditText editText, String comment) {
 676         final View focusedView = editText.findFocus();
 677         editText.setTypeface(null, (focusedView == editText) ? Typeface.NORMAL : Typeface.ITALIC);
 678         editText.setVisibility(
 679                 ((focusedView != editText) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 680                                                                           : View.VISIBLE);
 681     }
 682     @Override
 683     public void onDatePicked(int year, int month, int day) {
 684         final NewTransactionModel.TransactionHead head = getItem().toTransactionHead();
 685         head.setDate(new SimpleDate(year, month + 1, day));
 686         b.newTransactionDate.setText(head.getFormattedDate());
 687
 688         boolean focused = b.newTransactionDescription.requestFocus();
 689         if (focused)
 690             Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 691                                                             .getContext());
 692
 693     }
 694     private NewTransactionModel.Item getItem() {
 695         return Objects.requireNonNull(mAdapter.model.getItems()
 696                                                     .getValue())
 697                       .get(getAdapterPosition());
 698     }
 699     @Override
 700     public void descriptionSelected(String description) {
 701         b.accountRowAccName.setText(description);
 702         b.accountRowAccAmounts.requestFocus(View.FOCUS_FORWARD);
 703     }
 704 }