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