app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionItemHolder.java

   1 /*
   2  * Copyright © 2020 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.view.Gravity;
  25 import android.view.View;
  26 import android.view.ViewGroup;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.AutoCompleteTextView;
  29 import android.widget.EditText;
  30 import android.widget.FrameLayout;
  31 import android.widget.TextView;
  32
  33 import androidx.annotation.ColorInt;
  34 import androidx.annotation.NonNull;
  35 import androidx.appcompat.app.AppCompatActivity;
  36 import androidx.constraintlayout.widget.ConstraintLayout;
  37 import androidx.lifecycle.Observer;
  38 import androidx.recyclerview.widget.RecyclerView;
  39
  40 import net.ktnx.mobileledger.R;
  41 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  42 import net.ktnx.mobileledger.model.Currency;
  43 import net.ktnx.mobileledger.model.Data;
  44 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  45 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  46 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  47 import net.ktnx.mobileledger.ui.DatePickerFragment;
  48 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  49 import net.ktnx.mobileledger.utils.DimensionUtils;
  50 import net.ktnx.mobileledger.utils.Logger;
  51 import net.ktnx.mobileledger.utils.MLDB;
  52 import net.ktnx.mobileledger.utils.Misc;
  53 import net.ktnx.mobileledger.utils.SimpleDate;
  54
  55 import java.text.DecimalFormatSymbols;
  56 import java.text.ParseException;
  57 import java.util.Date;
  58 import java.util.Locale;
  59
  60 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  61
  62 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  63         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  64     private final String decimalDot;
  65     private final TextView tvCurrency;
  66     private final Observer<Boolean> showCommentsObserver;
  67     private final TextView tvTransactionComment;
  68     private String decimalSeparator;
  69     private NewTransactionModel.Item item;
  70     private TextView tvDate;
  71     private AutoCompleteTextView tvDescription;
  72     private TextView tvDummy;
  73     private AutoCompleteTextView tvAccount;
  74     private TextView tvComment;
  75     private EditText tvAmount;
  76     private ViewGroup lHead;
  77     private ViewGroup lAccount;
  78     private FrameLayout lPadding;
  79     private MobileLedgerProfile mProfile;
  80     private Date date;
  81     private Observer<SimpleDate> dateObserver;
  82     private Observer<String> descriptionObserver;
  83     private Observer<String> transactionCommentObserver;
  84     private Observer<String> hintObserver;
  85     private Observer<Integer> focusedAccountObserver;
  86     private Observer<Integer> accountCountObserver;
  87     private Observer<Boolean> editableObserver;
  88     private Observer<Currency.Position> currencyPositionObserver;
  89     private Observer<Boolean> currencyGapObserver;
  90     private Observer<Locale> localeObserver;
  91     private Observer<Currency> currencyObserver;
  92     private Observer<Boolean> showCurrencyObserver;
  93     private Observer<String> commentObserver;
  94     private Observer<Boolean> amountValidityObserver;
  95     private boolean inUpdate = false;
  96     private boolean syncingData = false;
  97     private View commentButton;
  98     //TODO multiple amounts with different currencies per posting
  99     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
 100         super(itemView);
 101         lAccount = itemView.findViewById(R.id.ntr_account);
 102         tvAccount = lAccount.findViewById(R.id.account_row_acc_name);
 103         tvComment = lAccount.findViewById(R.id.comment);
 104         tvTransactionComment = itemView.findViewById(R.id.transaction_comment);
 105         new TextViewClearHelper().attachToTextView((EditText) tvComment);
 106         commentButton = lAccount.findViewById(R.id.comment_button);
 107         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
 108         tvCurrency = itemView.findViewById(R.id.currency);
 109         tvDate = itemView.findViewById(R.id.new_transaction_date);
 110         tvDescription = itemView.findViewById(R.id.new_transaction_description);
 111         tvDummy = itemView.findViewById(R.id.dummy_text);
 112         lHead = itemView.findViewById(R.id.ntr_data);
 113         lPadding = itemView.findViewById(R.id.ntr_padding);
 114         final View commentLayout = itemView.findViewById(R.id.comment_layout);
 115         final View transactionCommentLayout =
 116                 itemView.findViewById(R.id.transaction_comment_layout);
 117
 118         tvDescription.setNextFocusForwardId(View.NO_ID);
 119         tvAccount.setNextFocusForwardId(View.NO_ID);
 120         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
 121
 122         tvDate.setOnClickListener(v -> pickTransactionDate());
 123
 124         commentButton.setOnClickListener(v -> {
 125             tvComment.setVisibility(View.VISIBLE);
 126             tvComment.requestFocus();
 127         });
 128
 129         transactionCommentLayout.findViewById(R.id.comment_button)
 130                                 .setOnClickListener(v -> {
 131                                     tvTransactionComment.setVisibility(View.VISIBLE);
 132                                     tvTransactionComment.requestFocus();
 133                                 });
 134
 135         mProfile = Data.getProfile();
 136
 137         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 138             final int id = v.getId();
 139             if (hasFocus) {
 140                 boolean wasSyncing = syncingData;
 141                 syncingData = true;
 142                 try {
 143                     final int pos = getAdapterPosition();
 144                     adapter.updateFocusedItem(pos);
 145                     switch (id) {
 146                         case R.id.account_row_acc_name:
 147                             adapter.noteFocusIsOnAccount(pos);
 148                             break;
 149                         case R.id.account_row_acc_amounts:
 150                             adapter.noteFocusIsOnAmount(pos);
 151                             break;
 152                         case R.id.comment:
 153                             adapter.noteFocusIsOnComment(pos);
 154                             break;
 155                         case R.id.transaction_comment:
 156                             adapter.noteFocusIsOnTransactionComment(pos);
 157                             break;
 158                         case R.id.new_transaction_description:
 159                             adapter.noteFocusIsOnDescription(pos);
 160                             break;
 161                     }
 162                 }
 163                 finally {
 164                     syncingData = wasSyncing;
 165                 }
 166             }
 167
 168             if (id == R.id.comment) {
 169                 commentFocusChanged(tvComment, hasFocus);
 170             }
 171             else if (id == R.id.transaction_comment) {
 172                 commentFocusChanged(tvTransactionComment, hasFocus);
 173             }
 174         };
 175
 176         tvDescription.setOnFocusChangeListener(focusMonitor);
 177         tvAccount.setOnFocusChangeListener(focusMonitor);
 178         tvAmount.setOnFocusChangeListener(focusMonitor);
 179         tvComment.setOnFocusChangeListener(focusMonitor);
 180         tvTransactionComment.setOnFocusChangeListener(focusMonitor);
 181
 182         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 183                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 184         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 185                 "name", true, this, mProfile);
 186
 187         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 188                                                               .getMonetaryDecimalSeparator());
 189         localeObserver = locale -> {
 190             decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance(locale)
 191                                                                   .getMonetaryDecimalSeparator());
 192         };
 193
 194         decimalDot = ".";
 195
 196         final TextWatcher tw = new TextWatcher() {
 197             @Override
 198             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 199             }
 200
 201             @Override
 202             public void onTextChanged(CharSequence s, int start, int before, int count) {
 203             }
 204
 205             @Override
 206             public void afterTextChanged(Editable s) {
 207 //                debug("input", "text changed");
 208                 if (inUpdate)
 209                     return;
 210
 211                 Logger.debug("textWatcher", "calling syncData()");
 212                 syncData();
 213                 Logger.debug("textWatcher",
 214                         "syncData() returned, checking if transaction is submittable");
 215                 adapter.checkTransactionSubmittable();
 216                 Logger.debug("textWatcher", "done");
 217             }
 218         };
 219         final TextWatcher amountWatcher = new TextWatcher() {
 220             @Override
 221             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 222                 Logger.debug("num",
 223                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 224                                 start, count, after));
 225             }
 226             @Override
 227             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 228             @Override
 229             public void afterTextChanged(Editable s) {
 230
 231                 if (syncData())
 232                     adapter.checkTransactionSubmittable();
 233             }
 234         };
 235         tvDescription.addTextChangedListener(tw);
 236         tvTransactionComment.addTextChangedListener(tw);
 237         tvAccount.addTextChangedListener(tw);
 238         tvComment.addTextChangedListener(tw);
 239         tvAmount.addTextChangedListener(amountWatcher);
 240
 241         tvCurrency.setOnClickListener(v -> {
 242             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 243             cpf.showPositionAndPadding();
 244             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 245             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 246             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 247         });
 248
 249         dateObserver = date -> {
 250             if (syncingData)
 251                 return;
 252             syncingData = true;
 253             try {
 254                 tvDate.setText(item.getFormattedDate());
 255             }
 256             finally {
 257                 syncingData = false;
 258             }
 259         };
 260         descriptionObserver = description -> {
 261             if (syncingData)
 262                 return;
 263             syncingData = true;
 264             try {
 265                 tvDescription.setText(description);
 266             }
 267             finally {
 268                 syncingData = false;
 269             }
 270         };
 271         transactionCommentObserver = transactionComment -> {
 272             final View focusedView = tvTransactionComment.findFocus();
 273             tvTransactionComment.setTypeface(null,
 274                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 275             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
 276                                                 Misc.isEmptyOrNull(transactionComment))
 277                                                ? View.INVISIBLE : View.VISIBLE);
 278
 279         };
 280         hintObserver = hint -> {
 281             if (syncingData)
 282                 return;
 283             syncingData = true;
 284             try {
 285                 if (hint == null)
 286                     tvAmount.setHint(R.string.zero_amount);
 287                 else
 288                     tvAmount.setHint(hint);
 289             }
 290             finally {
 291                 syncingData = false;
 292             }
 293         };
 294         editableObserver = this::setEditable;
 295         commentFocusChanged(tvTransactionComment, false);
 296         commentFocusChanged(tvComment, false);
 297         focusedAccountObserver = index -> {
 298             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 299                 return;
 300
 301             switch (item.getType()) {
 302                 case generalData:
 303                     // bad idea - double pop-up, and not really necessary.
 304                     // the user can tap the input to get the calendar
 305                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 306                     switch (item.getFocusedElement()) {
 307                         case TransactionComment:
 308                             tvTransactionComment.setVisibility(View.VISIBLE);
 309                             tvTransactionComment.requestFocus();
 310                             break;
 311                         case Description:
 312                             boolean focused = tvDescription.requestFocus();
 313                             tvDescription.dismissDropDown();
 314                             if (focused)
 315                                 Misc.showSoftKeyboard(
 316                                         (NewTransactionActivity) tvDescription.getContext());
 317                             break;
 318                     }
 319                     break;
 320                 case transactionRow:
 321                     switch (item.getFocusedElement()) {
 322                         case Amount:
 323                             tvAmount.requestFocus();
 324                             break;
 325                         case Comment:
 326                             tvComment.setVisibility(View.VISIBLE);
 327                             tvComment.requestFocus();
 328                             break;
 329                         case Account:
 330                             boolean focused = tvAccount.requestFocus();
 331                             tvAccount.dismissDropDown();
 332                             if (focused)
 333                                 Misc.showSoftKeyboard(
 334                                         (NewTransactionActivity) tvAccount.getContext());
 335                             break;
 336                     }
 337
 338                     break;
 339             }
 340         };
 341         accountCountObserver = count -> {
 342             final int adapterPosition = getAdapterPosition();
 343             final int layoutPosition = getLayoutPosition();
 344             Logger.debug("holder",
 345                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 346                             adapterPosition, layoutPosition, item.getType()
 347                                                                  .toString()
 348                                                                  .concat(item.getType() ==
 349                                                                          ItemType.transactionRow
 350                                                                          ? String.format(Locale.US,
 351                                                                          "'%s'=%s",
 352                                                                          item.getAccount()
 353                                                                              .getAccountName(),
 354                                                                          item.getAccount()
 355                                                                              .isAmountSet()
 356                                                                          ? String.format(Locale.US,
 357                                                                                  "%.2f",
 358                                                                                  item.getAccount()
 359                                                                                      .getAmount())
 360                                                                          : "unset") : "")));
 361             if (adapterPosition == count)
 362                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 363             else
 364                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 365         };
 366
 367         currencyObserver = currency -> {
 368             setCurrency(currency);
 369             adapter.checkTransactionSubmittable();
 370         };
 371
 372         currencyGapObserver =
 373                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 374                         hasGap);
 375
 376         currencyPositionObserver =
 377                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 378
 379         showCurrencyObserver = showCurrency -> {
 380             if (showCurrency) {
 381                 tvCurrency.setVisibility(View.VISIBLE);
 382             }
 383             else {
 384                 tvCurrency.setVisibility(View.GONE);
 385                 item.setCurrency(null);
 386             }
 387         };
 388
 389         commentObserver = comment -> {
 390             final View focusedView = tvComment.findFocus();
 391             tvComment.setTypeface(null,
 392                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
 393             tvComment.setVisibility(
 394                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
 395                                                                                 : View.VISIBLE);
 396         };
 397
 398         showCommentsObserver = show -> {
 399             final View amountLayout = itemView.findViewById(R.id.amount_layout);
 400             ConstraintLayout.LayoutParams amountLayoutParams =
 401                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
 402             ConstraintLayout.LayoutParams accountParams =
 403                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
 404             if (show) {
 405                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 406                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 407
 408                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 409                 amountLayoutParams.topToBottom = tvAccount.getId();
 410
 411                 commentLayout.setVisibility(View.VISIBLE);
 412             }
 413             else {
 414                 accountParams.endToStart = amountLayout.getId();
 415                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 416
 417                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 418                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 419
 420                 commentLayout.setVisibility(View.GONE);
 421             }
 422
 423             tvAccount.setLayoutParams(accountParams);
 424             amountLayout.setLayoutParams(amountLayoutParams);
 425
 426             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 427         };
 428
 429         amountValidityObserver = valid -> {
 430             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
 431                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 432             tvAmount.setMinEms(valid ? 4 : 5);
 433         };
 434     }
 435     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 436         @ColorInt int textColor;
 437         textColor = tvDummy.getTextColors()
 438                            .getDefaultColor();
 439         if (hasFocus) {
 440             textView.setTypeface(null, Typeface.NORMAL);
 441             textView.setHint(R.string.transaction_account_comment_hint);
 442         }
 443         else {
 444             int alpha = (textColor >> 24 & 0xff);
 445             alpha = 3 * alpha / 4;
 446             textColor = (alpha << 24) | (0x00ffffff & textColor);
 447             textView.setTypeface(null, Typeface.ITALIC);
 448             textView.setHint("");
 449             if (Misc.isEmptyOrNull(textView.getText())) {
 450                 textView.setVisibility(View.INVISIBLE);
 451             }
 452         }
 453         textView.setTextColor(textColor);
 454
 455     }
 456     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 457         ConstraintLayout.LayoutParams amountLP =
 458                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
 459         ConstraintLayout.LayoutParams currencyLP =
 460                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
 461
 462         if (position == Currency.Position.before) {
 463             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 464             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 465
 466             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 467             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 468             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 469             amountLP.startToEnd = tvCurrency.getId();
 470
 471             tvCurrency.setGravity(Gravity.END);
 472         }
 473         else {
 474             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 475             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 476
 477             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 478             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 479             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 480             amountLP.endToStart = tvCurrency.getId();
 481
 482             tvCurrency.setGravity(Gravity.START);
 483         }
 484
 485         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
 486         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
 487
 488         tvAmount.setLayoutParams(amountLP);
 489         tvCurrency.setLayoutParams(currencyLP);
 490
 491         // distance between the amount and the currency symbol
 492         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
 493
 494         if (position == Currency.Position.before) {
 495             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 496         }
 497         else {
 498             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 499         }
 500     }
 501     private void setCurrencyString(String currency) {
 502         @ColorInt int textColor = tvDummy.getTextColors()
 503                                          .getDefaultColor();
 504         if ((currency == null) || currency.isEmpty()) {
 505             tvCurrency.setText(R.string.currency_symbol);
 506             int alpha = (textColor >> 24) & 0xff;
 507             alpha = alpha * 3 / 4;
 508             tvCurrency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 509         }
 510         else {
 511             tvCurrency.setText(currency);
 512             tvCurrency.setTextColor(textColor);
 513         }
 514     }
 515     private void setCurrency(Currency currency) {
 516         setCurrencyString((currency == null) ? null : currency.getName());
 517     }
 518     private void setEditable(Boolean editable) {
 519         tvDate.setEnabled(editable);
 520         tvDescription.setEnabled(editable);
 521         tvAccount.setEnabled(editable);
 522         tvAmount.setEnabled(editable);
 523     }
 524     private void beginUpdates() {
 525         if (inUpdate)
 526             throw new RuntimeException("Already in update mode");
 527         inUpdate = true;
 528     }
 529     private void endUpdates() {
 530         if (!inUpdate)
 531             throw new RuntimeException("Not in update mode");
 532         inUpdate = false;
 533     }
 534     /**
 535      * syncData()
 536      * <p>
 537      * Stores the data from the UI elements into the model item
 538      * Returns true if there were changes made that suggest transaction has to be
 539      * checked for being submittable
 540      */
 541     private boolean syncData() {
 542         if (item == null)
 543             return false;
 544
 545         if (syncingData) {
 546             Logger.debug("new-trans", "skipping syncData() loop");
 547             return false;
 548         }
 549
 550         syncingData = true;
 551
 552         try {
 553             switch (item.getType()) {
 554                 case generalData:
 555                     item.setDate(String.valueOf(tvDate.getText()));
 556                     item.setDescription(String.valueOf(tvDescription.getText()));
 557                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
 558                     break;
 559                 case transactionRow:
 560                     final LedgerTransactionAccount account = item.getAccount();
 561                     account.setAccountName(String.valueOf(tvAccount.getText()));
 562
 563                     item.setComment(String.valueOf(tvComment.getText()));
 564
 565                     String amount = String.valueOf(tvAmount.getText());
 566                     amount = amount.trim();
 567
 568                     if (amount.isEmpty()) {
 569                         account.resetAmount();
 570                         item.validateAmount();
 571                     }
 572                     else {
 573                         try {
 574                             amount = amount.replace(decimalSeparator, decimalDot);
 575                             account.setAmount(Float.parseFloat(amount));
 576                             item.validateAmount();
 577                         }
 578                         catch (NumberFormatException e) {
 579                             Logger.debug("new-trans", String.format(
 580                                     "assuming amount is not set due to number format exception. " +
 581                                     "input was '%s'", amount));
 582                             account.invalidateAmount();
 583                             item.invalidateAmount();
 584                         }
 585                         final String curr = String.valueOf(tvCurrency.getText());
 586                         if (curr.equals(tvCurrency.getContext()
 587                                                   .getResources()
 588                                                   .getString(R.string.currency_symbol)) ||
 589                             curr.isEmpty())
 590                             account.setCurrency(null);
 591                         else
 592                             account.setCurrency(curr);
 593                     }
 594
 595                     break;
 596                 case bottomFiller:
 597                     throw new RuntimeException("Should not happen");
 598             }
 599
 600             return true;
 601         }
 602         catch (ParseException e) {
 603             throw new RuntimeException("Should not happen", e);
 604         }
 605         finally {
 606             syncingData = false;
 607         }
 608     }
 609     private void pickTransactionDate() {
 610         DatePickerFragment picker = new DatePickerFragment();
 611         picker.setFutureDates(mProfile.getFutureDates());
 612         picker.setOnDatePickedListener(this);
 613         picker.setCurrentDateFromText(tvDate.getText());
 614         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 615                 null);
 616     }
 617     /**
 618      * setData
 619      *
 620      * @param item updates the UI elements with the data from the model item
 621      */
 622     @SuppressLint("DefaultLocale")
 623     public void setData(NewTransactionModel.Item item) {
 624         beginUpdates();
 625         try {
 626             if (this.item != null && !this.item.equals(item)) {
 627                 this.item.stopObservingDate(dateObserver);
 628                 this.item.stopObservingDescription(descriptionObserver);
 629                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 630                 this.item.stopObservingAmountHint(hintObserver);
 631                 this.item.stopObservingEditableFlag(editableObserver);
 632                 this.item.getModel()
 633                          .stopObservingFocusedItem(focusedAccountObserver);
 634                 this.item.getModel()
 635                          .stopObservingAccountCount(accountCountObserver);
 636                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 637                 Data.currencyGap.removeObserver(currencyGapObserver);
 638                 Data.locale.removeObserver(localeObserver);
 639                 this.item.stopObservingCurrency(currencyObserver);
 640                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 641                 this.item.stopObservingComment(commentObserver);
 642                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 643                 this.item.stopObservingAmountValidity(amountValidityObserver);
 644
 645                 this.item = null;
 646             }
 647
 648             switch (item.getType()) {
 649                 case generalData:
 650                     tvDate.setText(item.getFormattedDate());
 651                     tvDescription.setText(item.getDescription());
 652                     tvTransactionComment.setText(item.getTransactionComment());
 653                     lHead.setVisibility(View.VISIBLE);
 654                     lAccount.setVisibility(View.GONE);
 655                     lPadding.setVisibility(View.GONE);
 656                     setEditable(true);
 657                     break;
 658                 case transactionRow:
 659                     LedgerTransactionAccount acc = item.getAccount();
 660                     tvAccount.setText(acc.getAccountName());
 661                     tvComment.setText(acc.getComment());
 662                     if (acc.isAmountSet()) {
 663                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 664                     }
 665                     else {
 666                         tvAmount.setText("");
 667 //                        tvAmount.setHint(R.string.zero_amount);
 668                     }
 669                     tvAmount.setHint(item.getAmountHint());
 670                     setCurrencyString(acc.getCurrency());
 671                     lHead.setVisibility(View.GONE);
 672                     lAccount.setVisibility(View.VISIBLE);
 673                     lPadding.setVisibility(View.GONE);
 674                     setEditable(true);
 675                     break;
 676                 case bottomFiller:
 677                     lHead.setVisibility(View.GONE);
 678                     lAccount.setVisibility(View.GONE);
 679                     lPadding.setVisibility(View.VISIBLE);
 680                     setEditable(false);
 681                     break;
 682             }
 683             if (this.item == null) { // was null or has changed
 684                 this.item = item;
 685                 final NewTransactionActivity activity =
 686                         (NewTransactionActivity) tvDescription.getContext();
 687
 688                 if (!item.isOfType(ItemType.bottomFiller)) {
 689                     item.observeEditableFlag(activity, editableObserver);
 690                     item.getModel()
 691                         .observeFocusedItem(activity, focusedAccountObserver);
 692                     item.getModel()
 693                         .observeShowComments(activity, showCommentsObserver);
 694                 }
 695                 switch (item.getType()) {
 696                     case generalData:
 697                         item.observeDate(activity, dateObserver);
 698                         item.observeDescription(activity, descriptionObserver);
 699                         item.observeTransactionComment(activity, transactionCommentObserver);
 700                         break;
 701                     case transactionRow:
 702                         item.observeAmountHint(activity, hintObserver);
 703                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 704                         Data.currencyGap.observe(activity, currencyGapObserver);
 705                         Data.locale.observe(activity, localeObserver);
 706                         item.observeCurrency(activity, currencyObserver);
 707                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 708                         item.observeComment(activity, commentObserver);
 709                         item.getModel()
 710                             .observeAccountCount(activity, accountCountObserver);
 711                         item.observeAmountValidity(activity, amountValidityObserver);
 712                         break;
 713                 }
 714             }
 715         }
 716         finally {
 717             endUpdates();
 718         }
 719     }
 720     @Override
 721     public void onDatePicked(int year, int month, int day) {
 722         item.setDate(new SimpleDate(year, month+1, day));
 723         boolean focused = tvDescription.requestFocus();
 724         if (focused)
 725             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 726
 727     }
 728     @Override
 729     public void descriptionSelected(String description) {
 730         tvAccount.setText(description);
 731         tvAmount.requestFocus(View.FOCUS_FORWARD);
 732     }
 733 }