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.Colors;
  50 import net.ktnx.mobileledger.utils.DimensionUtils;
  51 import net.ktnx.mobileledger.utils.Logger;
  52 import net.ktnx.mobileledger.utils.MLDB;
  53 import net.ktnx.mobileledger.utils.Misc;
  54 import net.ktnx.mobileledger.utils.SimpleDate;
  55
  56 import java.text.DecimalFormatSymbols;
  57 import java.text.ParseException;
  58 import java.util.Date;
  59 import java.util.Locale;
  60
  61 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  62
  63 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  64         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  65     private final String decimalDot;
  66     private final TextView tvCurrency;
  67     private final Observer<Boolean> showCommentsObserver;
  68     private final TextView tvTransactionComment;
  69     private String decimalSeparator;
  70     private NewTransactionModel.Item item;
  71     private TextView tvDate;
  72     private AutoCompleteTextView tvDescription;
  73     private TextView tvDummy;
  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<SimpleDate> 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         tvDummy = itemView.findViewById(R.id.dummy_text);
 113         lHead = itemView.findViewById(R.id.ntr_data);
 114         lPadding = itemView.findViewById(R.id.ntr_padding);
 115         final View commentLayout = itemView.findViewById(R.id.comment_layout);
 116         final View transactionCommentLayout =
 117                 itemView.findViewById(R.id.transaction_comment_layout);
 118
 119         tvDescription.setNextFocusForwardId(View.NO_ID);
 120         tvAccount.setNextFocusForwardId(View.NO_ID);
 121         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
 122
 123         tvDate.setOnClickListener(v -> pickTransactionDate());
 124
 125         commentButton.setOnClickListener(v -> {
 126             tvComment.setVisibility(View.VISIBLE);
 127             tvComment.requestFocus();
 128         });
 129
 130         transactionCommentLayout.findViewById(R.id.comment_button)
 131                                 .setOnClickListener(v -> {
 132                                     tvTransactionComment.setVisibility(View.VISIBLE);
 133                                     tvTransactionComment.requestFocus();
 134                                 });
 135
 136         mProfile = Data.profile.getValue();
 137         if (mProfile == null)
 138             throw new AssertionError();
 139
 140         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 141             final int id = v.getId();
 142             if (hasFocus) {
 143                 boolean wasSyncing = syncingData;
 144                 syncingData = true;
 145                 try {
 146                     final int pos = getAdapterPosition();
 147                     adapter.updateFocusedItem(pos);
 148                     switch (id) {
 149                         case R.id.account_row_acc_name:
 150                             adapter.noteFocusIsOnAccount(pos);
 151                             break;
 152                         case R.id.account_row_acc_amounts:
 153                             adapter.noteFocusIsOnAmount(pos);
 154                             break;
 155                         case R.id.comment:
 156                             adapter.noteFocusIsOnComment(pos);
 157                             break;
 158                         case R.id.transaction_comment:
 159                             adapter.noteFocusIsOnTransactionComment(pos);
 160                             break;
 161                         case R.id.new_transaction_description:
 162                             adapter.noteFocusIsOnDescription(pos);
 163                             break;
 164                     }
 165                 }
 166                 finally {
 167                     syncingData = wasSyncing;
 168                 }
 169             }
 170
 171             if (id == R.id.comment) {
 172                 commentFocusChanged(tvComment, hasFocus);
 173             }
 174             else if (id == R.id.transaction_comment) {
 175                 commentFocusChanged(tvTransactionComment, hasFocus);
 176             }
 177         };
 178
 179         tvDescription.setOnFocusChangeListener(focusMonitor);
 180         tvAccount.setOnFocusChangeListener(focusMonitor);
 181         tvAmount.setOnFocusChangeListener(focusMonitor);
 182         tvComment.setOnFocusChangeListener(focusMonitor);
 183         tvTransactionComment.setOnFocusChangeListener(focusMonitor);
 184
 185         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 186                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 187         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 188                 "name", true, this, mProfile);
 189
 190         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 191                                                               .getMonetaryDecimalSeparator());
 192         localeObserver = locale -> {
 193             decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance(locale)
 194                                                                   .getMonetaryDecimalSeparator());
 195         };
 196
 197         decimalDot = ".";
 198
 199         final TextWatcher tw = new TextWatcher() {
 200             @Override
 201             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 202             }
 203
 204             @Override
 205             public void onTextChanged(CharSequence s, int start, int before, int count) {
 206             }
 207
 208             @Override
 209             public void afterTextChanged(Editable s) {
 210 //                debug("input", "text changed");
 211                 if (inUpdate)
 212                     return;
 213
 214                 Logger.debug("textWatcher", "calling syncData()");
 215                 syncData();
 216                 Logger.debug("textWatcher",
 217                         "syncData() returned, checking if transaction is submittable");
 218                 adapter.checkTransactionSubmittable();
 219                 Logger.debug("textWatcher", "done");
 220             }
 221         };
 222         final TextWatcher amountWatcher = new TextWatcher() {
 223             @Override
 224             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 225                 Logger.debug("num",
 226                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 227                                 start, count, after));
 228             }
 229             @Override
 230             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 231             @Override
 232             public void afterTextChanged(Editable s) {
 233
 234                 if (syncData())
 235                     adapter.checkTransactionSubmittable();
 236             }
 237         };
 238         tvDescription.addTextChangedListener(tw);
 239         tvTransactionComment.addTextChangedListener(tw);
 240         tvAccount.addTextChangedListener(tw);
 241         tvComment.addTextChangedListener(tw);
 242         tvAmount.addTextChangedListener(amountWatcher);
 243
 244         tvCurrency.setOnClickListener(v -> {
 245             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 246             cpf.showPositionAndPadding();
 247             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 248             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 249             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 250         });
 251
 252         dateObserver = date -> {
 253             if (syncingData)
 254                 return;
 255             syncingData = true;
 256             try {
 257                 tvDate.setText(item.getFormattedDate());
 258             }
 259             finally {
 260                 syncingData = false;
 261             }
 262         };
 263         descriptionObserver = description -> {
 264             if (syncingData)
 265                 return;
 266             syncingData = true;
 267             try {
 268                 tvDescription.setText(description);
 269             }
 270             finally {
 271                 syncingData = false;
 272             }
 273         };
 274         transactionCommentObserver = transactionComment -> {
 275             final View focusedView = tvTransactionComment.findFocus();
 276             tvTransactionComment.setTypeface(null,
 277                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 278             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
 279                                                 Misc.isEmptyOrNull(transactionComment))
 280                                                ? View.INVISIBLE : View.VISIBLE);
 281
 282         };
 283         hintObserver = hint -> {
 284             if (syncingData)
 285                 return;
 286             syncingData = true;
 287             try {
 288                 if (hint == null)
 289                     tvAmount.setHint(R.string.zero_amount);
 290                 else
 291                     tvAmount.setHint(hint);
 292             }
 293             finally {
 294                 syncingData = false;
 295             }
 296         };
 297         editableObserver = this::setEditable;
 298         commentFocusChanged(tvTransactionComment, false);
 299         commentFocusChanged(tvComment, false);
 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         currencyObserver = currency -> {
 371             setCurrency(currency);
 372             adapter.checkTransactionSubmittable();
 373         };
 374
 375         currencyGapObserver =
 376                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 377                         hasGap);
 378
 379         currencyPositionObserver =
 380                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 381
 382         showCurrencyObserver = showCurrency -> {
 383             if (showCurrency) {
 384                 tvCurrency.setVisibility(View.VISIBLE);
 385             }
 386             else {
 387                 tvCurrency.setVisibility(View.GONE);
 388                 item.setCurrency(null);
 389             }
 390         };
 391
 392         commentObserver = comment -> {
 393             final View focusedView = tvComment.findFocus();
 394             tvComment.setTypeface(null,
 395                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
 396             tvComment.setVisibility(
 397                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
 398                                                                                 : View.VISIBLE);
 399         };
 400
 401         showCommentsObserver = show -> {
 402             final View amountLayout = itemView.findViewById(R.id.amount_layout);
 403             ConstraintLayout.LayoutParams amountLayoutParams =
 404                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
 405             ConstraintLayout.LayoutParams accountParams =
 406                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
 407             if (show) {
 408                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 409                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 410
 411                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 412                 amountLayoutParams.topToBottom = tvAccount.getId();
 413
 414                 commentLayout.setVisibility(View.VISIBLE);
 415             }
 416             else {
 417                 accountParams.endToStart = amountLayout.getId();
 418                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 419
 420                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 421                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 422
 423                 commentLayout.setVisibility(View.GONE);
 424             }
 425
 426             tvAccount.setLayoutParams(accountParams);
 427             amountLayout.setLayoutParams(amountLayoutParams);
 428
 429             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 430         };
 431
 432         amountValidityObserver = valid -> {
 433             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
 434                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 435             tvAmount.setMinEms(valid ? 4 : 5);
 436         };
 437     }
 438     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 439         @ColorInt int textColor;
 440         textColor = tvDummy.getTextColors()
 441                            .getDefaultColor();
 442         if (hasFocus) {
 443             textView.setTypeface(null, Typeface.NORMAL);
 444             textView.setHint(R.string.transaction_account_comment_hint);
 445         }
 446         else {
 447             int alpha = (textColor >> 24 & 0xff);
 448             alpha = 3 * alpha / 4;
 449             textColor = (alpha << 24) | (0x00ffffff & textColor);
 450             textView.setTypeface(null, Typeface.ITALIC);
 451             textView.setHint("");
 452             if (Misc.isEmptyOrNull(textView.getText())) {
 453                 textView.setVisibility(View.INVISIBLE);
 454             }
 455         }
 456         textView.setTextColor(textColor);
 457
 458     }
 459     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 460         ConstraintLayout.LayoutParams amountLP =
 461                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
 462         ConstraintLayout.LayoutParams currencyLP =
 463                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
 464
 465         if (position == Currency.Position.before) {
 466             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 467             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 468
 469             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 470             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 471             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 472             amountLP.startToEnd = tvCurrency.getId();
 473
 474             tvCurrency.setGravity(Gravity.END);
 475         }
 476         else {
 477             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 478             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 479
 480             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 481             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 482             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 483             amountLP.endToStart = tvCurrency.getId();
 484
 485             tvCurrency.setGravity(Gravity.START);
 486         }
 487
 488         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
 489         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
 490
 491         tvAmount.setLayoutParams(amountLP);
 492         tvCurrency.setLayoutParams(currencyLP);
 493
 494         // distance between the amount and the currency symbol
 495         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
 496
 497         if (position == Currency.Position.before) {
 498             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 499         }
 500         else {
 501             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 502         }
 503     }
 504     private void setCurrencyString(String currency) {
 505         if ((currency == null) || currency.isEmpty()) {
 506             tvCurrency.setText(R.string.currency_symbol);
 507             tvCurrency.setTextColor(0x7f000000 + (0x00ffffff & Colors.defaultTextColor));
 508         }
 509         else {
 510             tvCurrency.setText(currency);
 511             tvCurrency.setTextColor(Colors.defaultTextColor);
 512         }
 513     }
 514     private void setCurrency(Currency currency) {
 515         setCurrencyString((currency == null) ? null : currency.getName());
 516     }
 517     private void setEditable(Boolean editable) {
 518         tvDate.setEnabled(editable);
 519         tvDescription.setEnabled(editable);
 520         tvAccount.setEnabled(editable);
 521         tvAmount.setEnabled(editable);
 522     }
 523     private void beginUpdates() {
 524         if (inUpdate)
 525             throw new RuntimeException("Already in update mode");
 526         inUpdate = true;
 527     }
 528     private void endUpdates() {
 529         if (!inUpdate)
 530             throw new RuntimeException("Not in update mode");
 531         inUpdate = false;
 532     }
 533     /**
 534      * syncData()
 535      * <p>
 536      * Stores the data from the UI elements into the model item
 537      * Returns true if there were changes made that suggest transaction has to be
 538      * checked for being submittable
 539      */
 540     private boolean syncData() {
 541         if (item == null)
 542             return false;
 543
 544         if (syncingData) {
 545             Logger.debug("new-trans", "skipping syncData() loop");
 546             return false;
 547         }
 548
 549         syncingData = true;
 550
 551         try {
 552             switch (item.getType()) {
 553                 case generalData:
 554                     item.setDate(String.valueOf(tvDate.getText()));
 555                     item.setDescription(String.valueOf(tvDescription.getText()));
 556                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
 557                     break;
 558                 case transactionRow:
 559                     final LedgerTransactionAccount account = item.getAccount();
 560                     account.setAccountName(String.valueOf(tvAccount.getText()));
 561
 562                     item.setComment(String.valueOf(tvComment.getText()));
 563
 564                     String amount = String.valueOf(tvAmount.getText());
 565                     amount = amount.trim();
 566
 567                     if (amount.isEmpty()) {
 568                         account.resetAmount();
 569                         item.validateAmount();
 570                     }
 571                     else {
 572                         try {
 573                             amount = amount.replace(decimalSeparator, decimalDot);
 574                             account.setAmount(Float.parseFloat(amount));
 575                             item.validateAmount();
 576                         }
 577                         catch (NumberFormatException e) {
 578                             Logger.debug("new-trans", String.format(
 579                                     "assuming amount is not set due to number format exception. " +
 580                                     "input was '%s'", amount));
 581                             account.invalidateAmount();
 582                             item.invalidateAmount();
 583                         }
 584                         final String curr = String.valueOf(tvCurrency.getText());
 585                         if (curr.equals(tvCurrency.getContext()
 586                                                   .getResources()
 587                                                   .getString(R.string.currency_symbol)) ||
 588                             curr.isEmpty())
 589                             account.setCurrency(null);
 590                         else
 591                             account.setCurrency(curr);
 592                     }
 593
 594                     break;
 595                 case bottomFiller:
 596                     throw new RuntimeException("Should not happen");
 597             }
 598
 599             return true;
 600         }
 601         catch (ParseException e) {
 602             throw new RuntimeException("Should not happen", e);
 603         }
 604         finally {
 605             syncingData = false;
 606         }
 607     }
 608     private void pickTransactionDate() {
 609         DatePickerFragment picker = new DatePickerFragment();
 610         picker.setFutureDates(mProfile.getFutureDates());
 611         picker.setOnDatePickedListener(this);
 612         picker.setCurrentDateFromText(tvDate.getText());
 613         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 614                 null);
 615     }
 616     /**
 617      * setData
 618      *
 619      * @param item updates the UI elements with the data from the model item
 620      */
 621     @SuppressLint("DefaultLocale")
 622     public void setData(NewTransactionModel.Item item) {
 623         beginUpdates();
 624         try {
 625             if (this.item != null && !this.item.equals(item)) {
 626                 this.item.stopObservingDate(dateObserver);
 627                 this.item.stopObservingDescription(descriptionObserver);
 628                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 629                 this.item.stopObservingAmountHint(hintObserver);
 630                 this.item.stopObservingEditableFlag(editableObserver);
 631                 this.item.getModel()
 632                          .stopObservingFocusedItem(focusedAccountObserver);
 633                 this.item.getModel()
 634                          .stopObservingAccountCount(accountCountObserver);
 635                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 636                 Data.currencyGap.removeObserver(currencyGapObserver);
 637                 Data.locale.removeObserver(localeObserver);
 638                 this.item.stopObservingCurrency(currencyObserver);
 639                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 640                 this.item.stopObservingComment(commentObserver);
 641                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 642                 this.item.stopObservingAmountValidity(amountValidityObserver);
 643
 644                 this.item = null;
 645             }
 646
 647             switch (item.getType()) {
 648                 case generalData:
 649                     tvDate.setText(item.getFormattedDate());
 650                     tvDescription.setText(item.getDescription());
 651                     tvTransactionComment.setText(item.getTransactionComment());
 652                     lHead.setVisibility(View.VISIBLE);
 653                     lAccount.setVisibility(View.GONE);
 654                     lPadding.setVisibility(View.GONE);
 655                     setEditable(true);
 656                     break;
 657                 case transactionRow:
 658                     LedgerTransactionAccount acc = item.getAccount();
 659                     tvAccount.setText(acc.getAccountName());
 660                     tvComment.setText(acc.getComment());
 661                     if (acc.isAmountSet()) {
 662                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 663                     }
 664                     else {
 665                         tvAmount.setText("");
 666 //                        tvAmount.setHint(R.string.zero_amount);
 667                     }
 668                     tvAmount.setHint(item.getAmountHint());
 669                     setCurrencyString(acc.getCurrency());
 670                     lHead.setVisibility(View.GONE);
 671                     lAccount.setVisibility(View.VISIBLE);
 672                     lPadding.setVisibility(View.GONE);
 673                     setEditable(true);
 674                     break;
 675                 case bottomFiller:
 676                     lHead.setVisibility(View.GONE);
 677                     lAccount.setVisibility(View.GONE);
 678                     lPadding.setVisibility(View.VISIBLE);
 679                     setEditable(false);
 680                     break;
 681             }
 682             if (this.item == null) { // was null or has changed
 683                 this.item = item;
 684                 final NewTransactionActivity activity =
 685                         (NewTransactionActivity) tvDescription.getContext();
 686
 687                 if (!item.isOfType(ItemType.bottomFiller)) {
 688                     item.observeEditableFlag(activity, editableObserver);
 689                     item.getModel()
 690                         .observeFocusedItem(activity, focusedAccountObserver);
 691                     item.getModel()
 692                         .observeShowComments(activity, showCommentsObserver);
 693                 }
 694                 switch (item.getType()) {
 695                     case generalData:
 696                         item.observeDate(activity, dateObserver);
 697                         item.observeDescription(activity, descriptionObserver);
 698                         item.observeTransactionComment(activity, transactionCommentObserver);
 699                         break;
 700                     case transactionRow:
 701                         item.observeAmountHint(activity, hintObserver);
 702                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 703                         Data.currencyGap.observe(activity, currencyGapObserver);
 704                         Data.locale.observe(activity, localeObserver);
 705                         item.observeCurrency(activity, currencyObserver);
 706                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 707                         item.observeComment(activity, commentObserver);
 708                         item.getModel()
 709                             .observeAccountCount(activity, accountCountObserver);
 710                         item.observeAmountValidity(activity, amountValidityObserver);
 711                         break;
 712                 }
 713             }
 714         }
 715         finally {
 716             endUpdates();
 717         }
 718     }
 719     @Override
 720     public void onDatePicked(int year, int month, int day) {
 721         item.setDate(new SimpleDate(year, month+1, day));
 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 }