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

   1 /*
   2  * Copyright © 2019 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.os.Build;
  23 import android.text.Editable;
  24 import android.text.TextWatcher;
  25 import android.text.method.DigitsKeyListener;
  26 import android.view.Gravity;
  27 import android.view.View;
  28 import android.view.ViewGroup;
  29 import android.view.inputmethod.EditorInfo;
  30 import android.widget.AutoCompleteTextView;
  31 import android.widget.EditText;
  32 import android.widget.FrameLayout;
  33 import android.widget.TextView;
  34
  35 import androidx.annotation.NonNull;
  36 import androidx.appcompat.app.AppCompatActivity;
  37 import androidx.constraintlayout.widget.ConstraintLayout;
  38 import androidx.lifecycle.Observer;
  39 import androidx.recyclerview.widget.RecyclerView;
  40
  41 import net.ktnx.mobileledger.R;
  42 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  43 import net.ktnx.mobileledger.model.Currency;
  44 import net.ktnx.mobileledger.model.Data;
  45 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  46 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  47 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  48 import net.ktnx.mobileledger.ui.DatePickerFragment;
  49 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  50 import net.ktnx.mobileledger.utils.Colors;
  51 import net.ktnx.mobileledger.utils.DimensionUtils;
  52 import net.ktnx.mobileledger.utils.Logger;
  53 import net.ktnx.mobileledger.utils.MLDB;
  54 import net.ktnx.mobileledger.utils.Misc;
  55
  56 import java.text.DecimalFormatSymbols;
  57 import java.util.Calendar;
  58 import java.util.Date;
  59 import java.util.GregorianCalendar;
  60 import java.util.Locale;
  61
  62 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  63
  64 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  65         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  66     private final String decimalSeparator;
  67     private final String decimalDot;
  68     private final TextView tvCurrency;
  69     private final Observer<Boolean> showCommentsObserver;
  70     private final TextView tvTransactionComment;
  71     private NewTransactionModel.Item item;
  72     private TextView tvDate;
  73     private AutoCompleteTextView tvDescription;
  74     private AutoCompleteTextView tvAccount;
  75     private TextView tvComment;
  76     private EditText tvAmount;
  77     private ViewGroup lHead;
  78     private ViewGroup lAccount;
  79     private FrameLayout lPadding;
  80     private MobileLedgerProfile mProfile;
  81     private Date date;
  82     private Observer<Date> dateObserver;
  83     private Observer<String> descriptionObserver;
  84     private Observer<String> transactionCommentObserver;
  85     private Observer<String> hintObserver;
  86     private Observer<Integer> focusedAccountObserver;
  87     private Observer<Integer> accountCountObserver;
  88     private Observer<Boolean> editableObserver;
  89     private Observer<Currency.Position> currencyPositionObserver;
  90     private Observer<Boolean> currencyGapObserver;
  91     private Observer<Locale> localeObserver;
  92     private Observer<Currency> currencyObserver;
  93     private Observer<Boolean> showCurrencyObserver;
  94     private Observer<String> commentObserver;
  95     private Observer<Boolean> amountValidityObserver;
  96     private boolean inUpdate = false;
  97     private boolean syncingData = false;
  98     private View commentButton;
  99     //TODO multiple amounts with different currencies per posting
 100     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
 101         super(itemView);
 102         lAccount = itemView.findViewById(R.id.ntr_account);
 103         tvAccount = lAccount.findViewById(R.id.account_row_acc_name);
 104         tvComment = lAccount.findViewById(R.id.comment);
 105         tvTransactionComment = itemView.findViewById(R.id.transaction_comment);
 106         new TextViewClearHelper().attachToTextView((EditText) tvComment);
 107         commentButton = lAccount.findViewById(R.id.comment_button);
 108         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
 109         tvCurrency = itemView.findViewById(R.id.currency);
 110         tvDate = itemView.findViewById(R.id.new_transaction_date);
 111         tvDescription = itemView.findViewById(R.id.new_transaction_description);
 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.profile.getValue();
 136         if (mProfile == null)
 137             throw new AssertionError();
 138
 139         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 140             final int id = v.getId();
 141             if (hasFocus) {
 142                 boolean wasSyncing = syncingData;
 143                 syncingData = true;
 144                 try {
 145                     final int pos = getAdapterPosition();
 146                     adapter.updateFocusedItem(pos);
 147                     switch (id) {
 148                         case R.id.account_row_acc_name:
 149                             adapter.noteFocusIsOnAccount(pos);
 150                             break;
 151                         case R.id.account_row_acc_amounts:
 152                             adapter.noteFocusIsOnAmount(pos);
 153                             break;
 154                         case R.id.comment:
 155                             adapter.noteFocusIsOnComment(pos);
 156                             break;
 157                         case R.id.transaction_comment:
 158                             adapter.noteFocusIsOnTransactionComment(pos);
 159                             break;
 160                         case R.id.new_transaction_description:
 161                             adapter.noteFocusIsOnDescription(pos);
 162                             break;
 163                     }
 164                 }
 165                 finally {
 166                     syncingData = wasSyncing;
 167                 }
 168             }
 169
 170             if (id == R.id.comment) {
 171                 commentFocusChanged(commentLayout, tvComment, hasFocus);
 172             }
 173             else if (id == R.id.transaction_comment) {
 174                 commentFocusChanged(transactionCommentLayout, tvTransactionComment, hasFocus);
 175             }
 176         };
 177
 178         tvDescription.setOnFocusChangeListener(focusMonitor);
 179         tvAccount.setOnFocusChangeListener(focusMonitor);
 180         tvAmount.setOnFocusChangeListener(focusMonitor);
 181         tvComment.setOnFocusChangeListener(focusMonitor);
 182         tvTransactionComment.setOnFocusChangeListener(focusMonitor);
 183
 184         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 185                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 186         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 187                 "name", true, this, mProfile);
 188
 189         // FIXME: react on configuration (locale) changes
 190         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 191                                                               .getMonetaryDecimalSeparator());
 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         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 248             tvAmount.setKeyListener(
 249                     DigitsKeyListener.getInstance(Data.locale.getValue(), true, true));
 250         else
 251             tvAmount.setKeyListener(
 252                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 253
 254         dateObserver = date -> {
 255             if (syncingData)
 256                 return;
 257             syncingData = true;
 258             try {
 259                 tvDate.setText(item.getFormattedDate());
 260             }
 261             finally {
 262                 syncingData = false;
 263             }
 264         };
 265         descriptionObserver = description -> {
 266             if (syncingData)
 267                 return;
 268             syncingData = true;
 269             try {
 270                 tvDescription.setText(description);
 271             }
 272             finally {
 273                 syncingData = false;
 274             }
 275         };
 276         transactionCommentObserver = transactionComment -> {
 277             final View focusedView = tvTransactionComment.findFocus();
 278             tvTransactionComment.setTypeface(null,
 279                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 280             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
 281                                                 Misc.isEmptyOrNull(transactionComment))
 282                                                ? View.INVISIBLE : View.VISIBLE);
 283
 284         };
 285         hintObserver = hint -> {
 286             if (syncingData)
 287                 return;
 288             syncingData = true;
 289             try {
 290                 if (hint == null)
 291                     tvAmount.setHint(R.string.zero_amount);
 292                 else
 293                     tvAmount.setHint(hint);
 294             }
 295             finally {
 296                 syncingData = false;
 297             }
 298         };
 299         editableObserver = this::setEditable;
 300         focusedAccountObserver = index -> {
 301             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 302                 return;
 303
 304             switch (item.getType()) {
 305                 case generalData:
 306                     // bad idea - double pop-up, and not really necessary.
 307                     // the user can tap the input to get the calendar
 308                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 309                     switch (item.getFocusedElement()) {
 310                         case TransactionComment:
 311                             tvTransactionComment.setVisibility(View.VISIBLE);
 312                             tvTransactionComment.requestFocus();
 313                             break;
 314                         case Description:
 315                             boolean focused = tvDescription.requestFocus();
 316                             tvDescription.dismissDropDown();
 317                             if (focused)
 318                                 Misc.showSoftKeyboard(
 319                                         (NewTransactionActivity) tvDescription.getContext());
 320                             break;
 321                     }
 322                     break;
 323                 case transactionRow:
 324                     switch (item.getFocusedElement()) {
 325                         case Amount:
 326                             tvAmount.requestFocus();
 327                             break;
 328                         case Comment:
 329                             tvComment.setVisibility(View.VISIBLE);
 330                             tvComment.requestFocus();
 331                             break;
 332                         case Account:
 333                             boolean focused = tvAccount.requestFocus();
 334                             tvAccount.dismissDropDown();
 335                             if (focused)
 336                                 Misc.showSoftKeyboard(
 337                                         (NewTransactionActivity) tvAccount.getContext());
 338                             break;
 339                     }
 340
 341                     break;
 342             }
 343         };
 344         accountCountObserver = count -> {
 345             final int adapterPosition = getAdapterPosition();
 346             final int layoutPosition = getLayoutPosition();
 347             Logger.debug("holder",
 348                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 349                             adapterPosition, layoutPosition, item.getType()
 350                                                                  .toString()
 351                                                                  .concat(item.getType() ==
 352                                                                          ItemType.transactionRow
 353                                                                          ? String.format(Locale.US,
 354                                                                          "'%s'=%s",
 355                                                                          item.getAccount()
 356                                                                              .getAccountName(),
 357                                                                          item.getAccount()
 358                                                                              .isAmountSet()
 359                                                                          ? String.format(Locale.US,
 360                                                                                  "%.2f",
 361                                                                                  item.getAccount()
 362                                                                                      .getAmount())
 363                                                                          : "unset") : "")));
 364             if (adapterPosition == count)
 365                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 366             else
 367                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 368         };
 369
 370         localeObserver = locale -> {
 371             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 372                 tvAmount.setKeyListener(DigitsKeyListener.getInstance(locale, true, true));
 373         };
 374
 375         currencyObserver = currency -> {
 376             setCurrency(currency);
 377             adapter.checkTransactionSubmittable();
 378         };
 379
 380         currencyGapObserver =
 381                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 382                         hasGap);
 383
 384         currencyPositionObserver =
 385                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 386
 387         showCurrencyObserver = showCurrency -> {
 388             if (showCurrency) {
 389                 tvCurrency.setVisibility(View.VISIBLE);
 390             }
 391             else {
 392                 tvCurrency.setVisibility(View.GONE);
 393                 item.setCurrency(null);
 394             }
 395         };
 396
 397         commentObserver = comment -> {
 398             final View focusedView = tvComment.findFocus();
 399             tvComment.setTypeface(null,
 400                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
 401             tvComment.setVisibility(
 402                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
 403                                                                                 : View.VISIBLE);
 404         };
 405
 406         showCommentsObserver = show -> {
 407             final View amountLayout = itemView.findViewById(R.id.amount_layout);
 408             ConstraintLayout.LayoutParams amountLayoutParams =
 409                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
 410             ConstraintLayout.LayoutParams accountParams =
 411                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
 412             if (show) {
 413                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 414                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 415
 416                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 417                 amountLayoutParams.topToBottom = tvAccount.getId();
 418
 419                 commentLayout.setVisibility(View.VISIBLE);
 420             }
 421             else {
 422                 accountParams.endToStart = amountLayout.getId();
 423                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 424
 425                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 426                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 427
 428                 commentLayout.setVisibility(View.GONE);
 429             }
 430
 431             tvAccount.setLayoutParams(accountParams);
 432             amountLayout.setLayoutParams(amountLayoutParams);
 433
 434             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 435         };
 436
 437         amountValidityObserver = valid -> {
 438             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
 439                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 440             tvAmount.setMinEms(valid ? 4 : 5);
 441         };
 442     }
 443     private void commentFocusChanged(View layout, TextView textView, boolean hasFocus) {
 444         int textColor;
 445         if (hasFocus) {
 446             textColor = Colors.defaultTextColor;
 447             textView.setTypeface(null, Typeface.NORMAL);
 448             textView.setHint(R.string.transaction_account_comment_hint);
 449         }
 450         else {
 451             textColor = Colors.defaultTextColorDisabled;
 452             textView.setTypeface(null, Typeface.ITALIC);
 453             textView.setHint("");
 454             if (Misc.isEmptyOrNull(textView.getText())) {
 455                 textView.setVisibility(View.INVISIBLE);
 456             }
 457         }
 458         textView.setTextColor(textColor);
 459
 460     }
 461     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 462         ConstraintLayout.LayoutParams amountLP =
 463                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
 464         ConstraintLayout.LayoutParams currencyLP =
 465                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
 466
 467         if (position == Currency.Position.before) {
 468             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 469             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 470
 471             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 472             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 473             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 474             amountLP.startToEnd = tvCurrency.getId();
 475
 476             tvCurrency.setGravity(Gravity.END);
 477         }
 478         else {
 479             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 480             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 481
 482             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 483             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 484             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 485             amountLP.endToStart = tvCurrency.getId();
 486
 487             tvCurrency.setGravity(Gravity.START);
 488         }
 489
 490         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
 491         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
 492
 493         tvAmount.setLayoutParams(amountLP);
 494         tvCurrency.setLayoutParams(currencyLP);
 495
 496         // distance between the amount and the currency symbol
 497         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
 498
 499         if (position == Currency.Position.before) {
 500             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 501         }
 502         else {
 503             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 504         }
 505     }
 506     private void setCurrencyString(String currency) {
 507         if ((currency == null) || currency.isEmpty()) {
 508             tvCurrency.setText(R.string.currency_symbol);
 509             tvCurrency.setTextColor(0x7f000000 + (0x00ffffff & Colors.defaultTextColor));
 510         }
 511         else {
 512             tvCurrency.setText(currency);
 513             tvCurrency.setTextColor(Colors.defaultTextColor);
 514         }
 515     }
 516     private void setCurrency(Currency currency) {
 517         setCurrencyString((currency == null) ? null : currency.getName());
 518     }
 519     private void setEditable(Boolean editable) {
 520         tvDate.setEnabled(editable);
 521         tvDescription.setEnabled(editable);
 522         tvAccount.setEnabled(editable);
 523         tvAmount.setEnabled(editable);
 524     }
 525     private void beginUpdates() {
 526         if (inUpdate)
 527             throw new RuntimeException("Already in update mode");
 528         inUpdate = true;
 529     }
 530     private void endUpdates() {
 531         if (!inUpdate)
 532             throw new RuntimeException("Not in update mode");
 533         inUpdate = false;
 534     }
 535     /**
 536      * syncData()
 537      * <p>
 538      * Stores the data from the UI elements into the model item
 539      * Returns true if there were changes made that suggest transaction has to be
 540      * checked for being submittable
 541      */
 542     private boolean syncData() {
 543         if (item == null)
 544             return false;
 545
 546         if (syncingData) {
 547             Logger.debug("new-trans", "skipping syncData() loop");
 548             return false;
 549         }
 550
 551         syncingData = true;
 552
 553         try {
 554             switch (item.getType()) {
 555                 case generalData:
 556                     item.setDate(String.valueOf(tvDate.getText()));
 557                     item.setDescription(String.valueOf(tvDescription.getText()));
 558                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
 559                     break;
 560                 case transactionRow:
 561                     final LedgerTransactionAccount account = item.getAccount();
 562                     account.setAccountName(String.valueOf(tvAccount.getText()));
 563
 564                     item.setComment(String.valueOf(tvComment.getText()));
 565
 566                     String amount = String.valueOf(tvAmount.getText());
 567                     amount = amount.trim();
 568
 569                     if (amount.isEmpty()) {
 570                         account.resetAmount();
 571                         item.validateAmount();
 572                     }
 573                     else {
 574                         try {
 575                             amount = amount.replace(decimalSeparator, decimalDot);
 576                             account.setAmount(Float.parseFloat(amount));
 577                             item.validateAmount();
 578                         }
 579                         catch (NumberFormatException e) {
 580                             Logger.debug("new-trans", String.format(
 581                                     "assuming amount is not set due to number format exception. " +
 582                                     "input was '%s'", amount));
 583                             account.invalidateAmount();
 584                             item.invalidateAmount();
 585                         }
 586                         final String curr = String.valueOf(tvCurrency.getText());
 587                         if (curr.equals(tvCurrency.getContext()
 588                                                   .getResources()
 589                                                   .getString(R.string.currency_symbol)) ||
 590                             curr.isEmpty())
 591                             account.setCurrency(null);
 592                         else
 593                             account.setCurrency(curr);
 594                     }
 595
 596                     break;
 597                 case bottomFiller:
 598                     throw new RuntimeException("Should not happen");
 599             }
 600
 601             return true;
 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.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 612                 "datePicker");
 613     }
 614     /**
 615      * setData
 616      *
 617      * @param item updates the UI elements with the data from the model item
 618      */
 619     @SuppressLint("DefaultLocale")
 620     public void setData(NewTransactionModel.Item item) {
 621         beginUpdates();
 622         try {
 623             if (this.item != null && !this.item.equals(item)) {
 624                 this.item.stopObservingDate(dateObserver);
 625                 this.item.stopObservingDescription(descriptionObserver);
 626                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 627                 this.item.stopObservingAmountHint(hintObserver);
 628                 this.item.stopObservingEditableFlag(editableObserver);
 629                 this.item.getModel()
 630                          .stopObservingFocusedItem(focusedAccountObserver);
 631                 this.item.getModel()
 632                          .stopObservingAccountCount(accountCountObserver);
 633                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 634                 Data.currencyGap.removeObserver(currencyGapObserver);
 635                 Data.locale.removeObserver(localeObserver);
 636                 this.item.stopObservingCurrency(currencyObserver);
 637                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 638                 this.item.stopObservingComment(commentObserver);
 639                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 640                 this.item.stopObservingAmountValidity(amountValidityObserver);
 641
 642                 this.item = null;
 643             }
 644
 645             switch (item.getType()) {
 646                 case generalData:
 647                     tvDate.setText(item.getFormattedDate());
 648                     tvDescription.setText(item.getDescription());
 649                     tvTransactionComment.setText(item.getTransactionComment());
 650                     lHead.setVisibility(View.VISIBLE);
 651                     lAccount.setVisibility(View.GONE);
 652                     lPadding.setVisibility(View.GONE);
 653                     setEditable(true);
 654                     break;
 655                 case transactionRow:
 656                     LedgerTransactionAccount acc = item.getAccount();
 657                     tvAccount.setText(acc.getAccountName());
 658                     tvComment.setText(acc.getComment());
 659                     if (acc.isAmountSet()) {
 660                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 661                     }
 662                     else {
 663                         tvAmount.setText("");
 664 //                        tvAmount.setHint(R.string.zero_amount);
 665                     }
 666                     tvAmount.setHint(item.getAmountHint());
 667                     setCurrencyString(acc.getCurrency());
 668                     lHead.setVisibility(View.GONE);
 669                     lAccount.setVisibility(View.VISIBLE);
 670                     lPadding.setVisibility(View.GONE);
 671                     setEditable(true);
 672                     break;
 673                 case bottomFiller:
 674                     lHead.setVisibility(View.GONE);
 675                     lAccount.setVisibility(View.GONE);
 676                     lPadding.setVisibility(View.VISIBLE);
 677                     setEditable(false);
 678                     break;
 679             }
 680             if (this.item == null) { // was null or has changed
 681                 this.item = item;
 682                 final NewTransactionActivity activity =
 683                         (NewTransactionActivity) tvDescription.getContext();
 684
 685                 if (!item.isOfType(ItemType.bottomFiller)) {
 686                     item.observeEditableFlag(activity, editableObserver);
 687                     item.getModel()
 688                         .observeFocusedItem(activity, focusedAccountObserver);
 689                     item.getModel()
 690                         .observeShowComments(activity, showCommentsObserver);
 691                 }
 692                 switch (item.getType()) {
 693                     case generalData:
 694                         item.observeDate(activity, dateObserver);
 695                         item.observeDescription(activity, descriptionObserver);
 696                         item.observeTransactionComment(activity, transactionCommentObserver);
 697                         break;
 698                     case transactionRow:
 699                         item.observeAmountHint(activity, hintObserver);
 700                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 701                         Data.currencyGap.observe(activity, currencyGapObserver);
 702                         Data.locale.observe(activity, localeObserver);
 703                         item.observeCurrency(activity, currencyObserver);
 704                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 705                         item.observeComment(activity, commentObserver);
 706                         item.getModel()
 707                             .observeAccountCount(activity, accountCountObserver);
 708                         item.observeAmountValidity(activity, amountValidityObserver);
 709                         break;
 710                 }
 711             }
 712         }
 713         finally {
 714             endUpdates();
 715         }
 716     }
 717     @Override
 718     public void onDatePicked(int year, int month, int day) {
 719         final Calendar c = GregorianCalendar.getInstance();
 720         c.set(year, month, day);
 721         item.setDate(c.getTime());
 722         boolean focused = tvDescription.requestFocus();
 723         if (focused)
 724             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 725
 726     }
 727     @Override
 728     public void descriptionSelected(String description) {
 729         tvAccount.setText(description);
 730         tvAmount.requestFocus(View.FOCUS_FORWARD);
 731     }
 732 }