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

   1 /*
   2  * Copyright © 2020 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.view.Gravity;
  25 import android.view.View;
  26 import android.view.ViewGroup;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.AutoCompleteTextView;
  29 import android.widget.EditText;
  30 import android.widget.FrameLayout;
  31 import android.widget.TextView;
  32
  33 import androidx.annotation.ColorInt;
  34 import androidx.annotation.NonNull;
  35 import androidx.appcompat.app.AppCompatActivity;
  36 import androidx.constraintlayout.widget.ConstraintLayout;
  37 import androidx.lifecycle.Observer;
  38 import androidx.recyclerview.widget.RecyclerView;
  39
  40 import net.ktnx.mobileledger.R;
  41 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  42 import net.ktnx.mobileledger.model.Currency;
  43 import net.ktnx.mobileledger.model.Data;
  44 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  45 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  46 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  47 import net.ktnx.mobileledger.ui.DatePickerFragment;
  48 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  49 import net.ktnx.mobileledger.utils.DimensionUtils;
  50 import net.ktnx.mobileledger.utils.Logger;
  51 import net.ktnx.mobileledger.utils.MLDB;
  52 import net.ktnx.mobileledger.utils.Misc;
  53 import net.ktnx.mobileledger.utils.SimpleDate;
  54
  55 import java.text.DecimalFormatSymbols;
  56 import java.text.ParseException;
  57 import java.util.Date;
  58 import java.util.Locale;
  59
  60 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  61
  62 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  63         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  64     private final String decimalDot;
  65     private final TextView tvCurrency;
  66     private final Observer<Boolean> showCommentsObserver;
  67     private final TextView tvTransactionComment;
  68     private String decimalSeparator;
  69     private NewTransactionModel.Item item;
  70     private TextView tvDate;
  71     private AutoCompleteTextView tvDescription;
  72     private TextView tvDummy;
  73     private AutoCompleteTextView tvAccount;
  74     private TextView tvComment;
  75     private EditText tvAmount;
  76     private ViewGroup lHead;
  77     private ViewGroup lAccount;
  78     private FrameLayout lPadding;
  79     private MobileLedgerProfile mProfile;
  80     private Date date;
  81     private Observer<SimpleDate> dateObserver;
  82     private Observer<String> descriptionObserver;
  83     private Observer<String> transactionCommentObserver;
  84     private Observer<String> hintObserver;
  85     private Observer<Integer> focusedAccountObserver;
  86     private Observer<Integer> accountCountObserver;
  87     private Observer<Boolean> editableObserver;
  88     private Observer<Currency.Position> currencyPositionObserver;
  89     private Observer<Boolean> currencyGapObserver;
  90     private Observer<Locale> localeObserver;
  91     private Observer<Currency> currencyObserver;
  92     private Observer<Boolean> showCurrencyObserver;
  93     private Observer<String> commentObserver;
  94     private Observer<Boolean> amountValidityObserver;
  95     private boolean inUpdate = false;
  96     private boolean syncingData = false;
  97     private View commentButton;
  98     //TODO multiple amounts with different currencies per posting
  99     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
 100         super(itemView);
 101         lAccount = itemView.findViewById(R.id.ntr_account);
 102         tvAccount = lAccount.findViewById(R.id.account_row_acc_name);
 103         tvComment = lAccount.findViewById(R.id.comment);
 104         tvTransactionComment = itemView.findViewById(R.id.transaction_comment);
 105         new TextViewClearHelper().attachToTextView((EditText) tvComment);
 106         commentButton = lAccount.findViewById(R.id.comment_button);
 107         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
 108         tvCurrency = itemView.findViewById(R.id.currency);
 109         tvDate = itemView.findViewById(R.id.new_transaction_date);
 110         tvDescription = itemView.findViewById(R.id.new_transaction_description);
 111         tvDummy = itemView.findViewById(R.id.dummy_text);
 112         lHead = itemView.findViewById(R.id.ntr_data);
 113         lPadding = itemView.findViewById(R.id.ntr_padding);
 114         final View commentLayout = itemView.findViewById(R.id.comment_layout);
 115         final View transactionCommentLayout =
 116                 itemView.findViewById(R.id.transaction_comment_layout);
 117
 118         tvDescription.setNextFocusForwardId(View.NO_ID);
 119         tvAccount.setNextFocusForwardId(View.NO_ID);
 120         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
 121
 122         tvDate.setOnClickListener(v -> pickTransactionDate());
 123
 124         commentButton.setOnClickListener(v -> {
 125             tvComment.setVisibility(View.VISIBLE);
 126             tvComment.requestFocus();
 127         });
 128
 129         transactionCommentLayout.findViewById(R.id.comment_button)
 130                                 .setOnClickListener(v -> {
 131                                     tvTransactionComment.setVisibility(View.VISIBLE);
 132                                     tvTransactionComment.requestFocus();
 133                                 });
 134
 135         mProfile = Data.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(tvComment, hasFocus);
 172             }
 173             else if (id == R.id.transaction_comment) {
 174                 commentFocusChanged(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         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 190                                                               .getMonetaryDecimalSeparator());
 191         localeObserver = locale -> {
 192             decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance(locale)
 193                                                                   .getMonetaryDecimalSeparator());
 194         };
 195
 196         decimalDot = ".";
 197
 198         final TextWatcher tw = new TextWatcher() {
 199             @Override
 200             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 201             }
 202
 203             @Override
 204             public void onTextChanged(CharSequence s, int start, int before, int count) {
 205             }
 206
 207             @Override
 208             public void afterTextChanged(Editable s) {
 209 //                debug("input", "text changed");
 210                 if (inUpdate)
 211                     return;
 212
 213                 Logger.debug("textWatcher", "calling syncData()");
 214                 syncData();
 215                 Logger.debug("textWatcher",
 216                         "syncData() returned, checking if transaction is submittable");
 217                 adapter.checkTransactionSubmittable();
 218                 Logger.debug("textWatcher", "done");
 219             }
 220         };
 221         final TextWatcher amountWatcher = new TextWatcher() {
 222             @Override
 223             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 224                 Logger.debug("num",
 225                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 226                                 start, count, after));
 227             }
 228             @Override
 229             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 230             @Override
 231             public void afterTextChanged(Editable s) {
 232
 233                 if (syncData())
 234                     adapter.checkTransactionSubmittable();
 235             }
 236         };
 237         tvDescription.addTextChangedListener(tw);
 238         tvTransactionComment.addTextChangedListener(tw);
 239         tvAccount.addTextChangedListener(tw);
 240         tvComment.addTextChangedListener(tw);
 241         tvAmount.addTextChangedListener(amountWatcher);
 242
 243         tvCurrency.setOnClickListener(v -> {
 244             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 245             cpf.showPositionAndPadding();
 246             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 247             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 248             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 249         });
 250
 251         dateObserver = date -> {
 252             if (syncingData)
 253                 return;
 254             syncingData = true;
 255             try {
 256                 tvDate.setText(item.getFormattedDate());
 257             }
 258             finally {
 259                 syncingData = false;
 260             }
 261         };
 262         descriptionObserver = description -> {
 263             if (syncingData)
 264                 return;
 265             syncingData = true;
 266             try {
 267                 tvDescription.setText(description);
 268             }
 269             finally {
 270                 syncingData = false;
 271             }
 272         };
 273         transactionCommentObserver = transactionComment -> {
 274             final View focusedView = tvTransactionComment.findFocus();
 275             tvTransactionComment.setTypeface(null,
 276                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 277             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
 278                                                 Misc.isEmptyOrNull(transactionComment))
 279                                                ? View.INVISIBLE : View.VISIBLE);
 280
 281         };
 282         hintObserver = hint -> {
 283             if (syncingData)
 284                 return;
 285             syncingData = true;
 286             try {
 287                 if (hint == null)
 288                     tvAmount.setHint(R.string.zero_amount);
 289                 else
 290                     tvAmount.setHint(hint);
 291             }
 292             finally {
 293                 syncingData = false;
 294             }
 295         };
 296         editableObserver = this::setEditable;
 297         commentFocusChanged(tvTransactionComment, false);
 298         commentFocusChanged(tvComment, false);
 299         focusedAccountObserver = index -> {
 300             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 301                 return;
 302
 303             switch (item.getType()) {
 304                 case generalData:
 305                     // bad idea - double pop-up, and not really necessary.
 306                     // the user can tap the input to get the calendar
 307                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 308                     switch (item.getFocusedElement()) {
 309                         case TransactionComment:
 310                             tvTransactionComment.setVisibility(View.VISIBLE);
 311                             tvTransactionComment.requestFocus();
 312                             break;
 313                         case Description:
 314                             boolean focused = tvDescription.requestFocus();
 315                             tvDescription.dismissDropDown();
 316                             if (focused)
 317                                 Misc.showSoftKeyboard(
 318                                         (NewTransactionActivity) tvDescription.getContext());
 319                             break;
 320                     }
 321                     break;
 322                 case transactionRow:
 323                     switch (item.getFocusedElement()) {
 324                         case Amount:
 325                             tvAmount.requestFocus();
 326                             break;
 327                         case Comment:
 328                             tvComment.setVisibility(View.VISIBLE);
 329                             tvComment.requestFocus();
 330                             break;
 331                         case Account:
 332                             boolean focused = tvAccount.requestFocus();
 333                             tvAccount.dismissDropDown();
 334                             if (focused)
 335                                 Misc.showSoftKeyboard(
 336                                         (NewTransactionActivity) tvAccount.getContext());
 337                             break;
 338                     }
 339
 340                     break;
 341             }
 342         };
 343         accountCountObserver = count -> {
 344             final int adapterPosition = getAdapterPosition();
 345             final int layoutPosition = getLayoutPosition();
 346             Logger.debug("holder",
 347                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 348                             adapterPosition, layoutPosition, item.getType()
 349                                                                  .toString()
 350                                                                  .concat(item.getType() ==
 351                                                                          ItemType.transactionRow
 352                                                                          ? String.format(Locale.US,
 353                                                                          "'%s'=%s",
 354                                                                          item.getAccount()
 355                                                                              .getAccountName(),
 356                                                                          item.getAccount()
 357                                                                              .isAmountSet()
 358                                                                          ? String.format(Locale.US,
 359                                                                                  "%.2f",
 360                                                                                  item.getAccount()
 361                                                                                      .getAmount())
 362                                                                          : "unset") : "")));
 363             if (adapterPosition == count)
 364                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 365             else
 366                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 367         };
 368
 369         currencyObserver = currency -> {
 370             setCurrency(currency);
 371             adapter.checkTransactionSubmittable();
 372         };
 373
 374         currencyGapObserver =
 375                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 376                         hasGap);
 377
 378         currencyPositionObserver =
 379                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 380
 381         showCurrencyObserver = showCurrency -> {
 382             if (showCurrency) {
 383                 tvCurrency.setVisibility(View.VISIBLE);
 384             }
 385             else {
 386                 tvCurrency.setVisibility(View.GONE);
 387                 item.setCurrency(null);
 388             }
 389         };
 390
 391         commentObserver = comment -> {
 392             final View focusedView = tvComment.findFocus();
 393             tvComment.setTypeface(null,
 394                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
 395             tvComment.setVisibility(
 396                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
 397                                                                                 : View.VISIBLE);
 398         };
 399
 400         showCommentsObserver = show -> {
 401             final View amountLayout = itemView.findViewById(R.id.amount_layout);
 402             ConstraintLayout.LayoutParams amountLayoutParams =
 403                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
 404             ConstraintLayout.LayoutParams accountParams =
 405                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
 406             if (show) {
 407                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 408                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 409
 410                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 411                 amountLayoutParams.topToBottom = tvAccount.getId();
 412
 413                 commentLayout.setVisibility(View.VISIBLE);
 414             }
 415             else {
 416                 accountParams.endToStart = amountLayout.getId();
 417                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 418
 419                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 420                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 421
 422                 commentLayout.setVisibility(View.GONE);
 423             }
 424
 425             tvAccount.setLayoutParams(accountParams);
 426             amountLayout.setLayoutParams(amountLayoutParams);
 427
 428             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 429         };
 430
 431         amountValidityObserver = valid -> {
 432             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
 433                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 434             tvAmount.setMinEms(valid ? 4 : 5);
 435         };
 436     }
 437     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 438         @ColorInt int textColor;
 439         textColor = tvDummy.getTextColors()
 440                            .getDefaultColor();
 441         if (hasFocus) {
 442             textView.setTypeface(null, Typeface.NORMAL);
 443             textView.setHint(R.string.transaction_account_comment_hint);
 444         }
 445         else {
 446             int alpha = (textColor >> 24 & 0xff);
 447             alpha = 3 * alpha / 4;
 448             textColor = (alpha << 24) | (0x00ffffff & textColor);
 449             textView.setTypeface(null, Typeface.ITALIC);
 450             textView.setHint("");
 451             if (Misc.isEmptyOrNull(textView.getText())) {
 452                 textView.setVisibility(View.INVISIBLE);
 453             }
 454         }
 455         textView.setTextColor(textColor);
 456
 457     }
 458     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 459         ConstraintLayout.LayoutParams amountLP =
 460                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
 461         ConstraintLayout.LayoutParams currencyLP =
 462                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
 463
 464         if (position == Currency.Position.before) {
 465             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 466             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 467
 468             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 469             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 470             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 471             amountLP.startToEnd = tvCurrency.getId();
 472
 473             tvCurrency.setGravity(Gravity.END);
 474         }
 475         else {
 476             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 477             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 478
 479             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 480             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 481             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 482             amountLP.endToStart = tvCurrency.getId();
 483
 484             tvCurrency.setGravity(Gravity.START);
 485         }
 486
 487         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
 488         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
 489
 490         tvAmount.setLayoutParams(amountLP);
 491         tvCurrency.setLayoutParams(currencyLP);
 492
 493         // distance between the amount and the currency symbol
 494         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
 495
 496         if (position == Currency.Position.before) {
 497             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 498         }
 499         else {
 500             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 501         }
 502     }
 503     private void setCurrencyString(String currency) {
 504         @ColorInt int textColor = tvDummy.getTextColors()
 505                                          .getDefaultColor();
 506         if ((currency == null) || currency.isEmpty()) {
 507             tvCurrency.setText(R.string.currency_symbol);
 508             int alpha = (textColor >> 24) & 0xff;
 509             alpha = alpha * 3 / 4;
 510             tvCurrency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 511         }
 512         else {
 513             tvCurrency.setText(currency);
 514             tvCurrency.setTextColor(textColor);
 515         }
 516     }
 517     private void setCurrency(Currency currency) {
 518         setCurrencyString((currency == null) ? null : currency.getName());
 519     }
 520     private void setEditable(Boolean editable) {
 521         tvDate.setEnabled(editable);
 522         tvDescription.setEnabled(editable);
 523         tvAccount.setEnabled(editable);
 524         tvAmount.setEnabled(editable);
 525     }
 526     private void beginUpdates() {
 527         if (inUpdate)
 528             throw new RuntimeException("Already in update mode");
 529         inUpdate = true;
 530     }
 531     private void endUpdates() {
 532         if (!inUpdate)
 533             throw new RuntimeException("Not in update mode");
 534         inUpdate = false;
 535     }
 536     /**
 537      * syncData()
 538      * <p>
 539      * Stores the data from the UI elements into the model item
 540      * Returns true if there were changes made that suggest transaction has to be
 541      * checked for being submittable
 542      */
 543     private boolean syncData() {
 544         if (item == null)
 545             return false;
 546
 547         if (syncingData) {
 548             Logger.debug("new-trans", "skipping syncData() loop");
 549             return false;
 550         }
 551
 552         syncingData = true;
 553
 554         try {
 555             switch (item.getType()) {
 556                 case generalData:
 557                     item.setDate(String.valueOf(tvDate.getText()));
 558                     item.setDescription(String.valueOf(tvDescription.getText()));
 559                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
 560                     break;
 561                 case transactionRow:
 562                     final LedgerTransactionAccount account = item.getAccount();
 563                     account.setAccountName(String.valueOf(tvAccount.getText()));
 564
 565                     item.setComment(String.valueOf(tvComment.getText()));
 566
 567                     String amount = String.valueOf(tvAmount.getText());
 568                     amount = amount.trim();
 569
 570                     if (amount.isEmpty()) {
 571                         account.resetAmount();
 572                         item.validateAmount();
 573                     }
 574                     else {
 575                         try {
 576                             amount = amount.replace(decimalSeparator, decimalDot);
 577                             account.setAmount(Float.parseFloat(amount));
 578                             item.validateAmount();
 579                         }
 580                         catch (NumberFormatException e) {
 581                             Logger.debug("new-trans", String.format(
 582                                     "assuming amount is not set due to number format exception. " +
 583                                     "input was '%s'", amount));
 584                             account.invalidateAmount();
 585                             item.invalidateAmount();
 586                         }
 587                         final String curr = String.valueOf(tvCurrency.getText());
 588                         if (curr.equals(tvCurrency.getContext()
 589                                                   .getResources()
 590                                                   .getString(R.string.currency_symbol)) ||
 591                             curr.isEmpty())
 592                             account.setCurrency(null);
 593                         else
 594                             account.setCurrency(curr);
 595                     }
 596
 597                     break;
 598                 case bottomFiller:
 599                     throw new RuntimeException("Should not happen");
 600             }
 601
 602             return true;
 603         }
 604         catch (ParseException e) {
 605             throw new RuntimeException("Should not happen", e);
 606         }
 607         finally {
 608             syncingData = false;
 609         }
 610     }
 611     private void pickTransactionDate() {
 612         DatePickerFragment picker = new DatePickerFragment();
 613         picker.setFutureDates(mProfile.getFutureDates());
 614         picker.setOnDatePickedListener(this);
 615         picker.setCurrentDateFromText(tvDate.getText());
 616         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 617                 null);
 618     }
 619     /**
 620      * setData
 621      *
 622      * @param item updates the UI elements with the data from the model item
 623      */
 624     @SuppressLint("DefaultLocale")
 625     public void setData(NewTransactionModel.Item item) {
 626         beginUpdates();
 627         try {
 628             if (this.item != null && !this.item.equals(item)) {
 629                 this.item.stopObservingDate(dateObserver);
 630                 this.item.stopObservingDescription(descriptionObserver);
 631                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 632                 this.item.stopObservingAmountHint(hintObserver);
 633                 this.item.stopObservingEditableFlag(editableObserver);
 634                 this.item.getModel()
 635                          .stopObservingFocusedItem(focusedAccountObserver);
 636                 this.item.getModel()
 637                          .stopObservingAccountCount(accountCountObserver);
 638                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 639                 Data.currencyGap.removeObserver(currencyGapObserver);
 640                 Data.locale.removeObserver(localeObserver);
 641                 this.item.stopObservingCurrency(currencyObserver);
 642                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 643                 this.item.stopObservingComment(commentObserver);
 644                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 645                 this.item.stopObservingAmountValidity(amountValidityObserver);
 646
 647                 this.item = null;
 648             }
 649
 650             switch (item.getType()) {
 651                 case generalData:
 652                     tvDate.setText(item.getFormattedDate());
 653                     tvDescription.setText(item.getDescription());
 654                     tvTransactionComment.setText(item.getTransactionComment());
 655                     lHead.setVisibility(View.VISIBLE);
 656                     lAccount.setVisibility(View.GONE);
 657                     lPadding.setVisibility(View.GONE);
 658                     setEditable(true);
 659                     break;
 660                 case transactionRow:
 661                     LedgerTransactionAccount acc = item.getAccount();
 662                     tvAccount.setText(acc.getAccountName());
 663                     tvComment.setText(acc.getComment());
 664                     if (acc.isAmountSet()) {
 665                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 666                     }
 667                     else {
 668                         tvAmount.setText("");
 669 //                        tvAmount.setHint(R.string.zero_amount);
 670                     }
 671                     tvAmount.setHint(item.getAmountHint());
 672                     setCurrencyString(acc.getCurrency());
 673                     lHead.setVisibility(View.GONE);
 674                     lAccount.setVisibility(View.VISIBLE);
 675                     lPadding.setVisibility(View.GONE);
 676                     setEditable(true);
 677                     break;
 678                 case bottomFiller:
 679                     lHead.setVisibility(View.GONE);
 680                     lAccount.setVisibility(View.GONE);
 681                     lPadding.setVisibility(View.VISIBLE);
 682                     setEditable(false);
 683                     break;
 684             }
 685             if (this.item == null) { // was null or has changed
 686                 this.item = item;
 687                 final NewTransactionActivity activity =
 688                         (NewTransactionActivity) tvDescription.getContext();
 689
 690                 if (!item.isOfType(ItemType.bottomFiller)) {
 691                     item.observeEditableFlag(activity, editableObserver);
 692                     item.getModel()
 693                         .observeFocusedItem(activity, focusedAccountObserver);
 694                     item.getModel()
 695                         .observeShowComments(activity, showCommentsObserver);
 696                 }
 697                 switch (item.getType()) {
 698                     case generalData:
 699                         item.observeDate(activity, dateObserver);
 700                         item.observeDescription(activity, descriptionObserver);
 701                         item.observeTransactionComment(activity, transactionCommentObserver);
 702                         break;
 703                     case transactionRow:
 704                         item.observeAmountHint(activity, hintObserver);
 705                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 706                         Data.currencyGap.observe(activity, currencyGapObserver);
 707                         Data.locale.observe(activity, localeObserver);
 708                         item.observeCurrency(activity, currencyObserver);
 709                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 710                         item.observeComment(activity, commentObserver);
 711                         item.getModel()
 712                             .observeAccountCount(activity, accountCountObserver);
 713                         item.observeAmountValidity(activity, amountValidityObserver);
 714                         break;
 715                 }
 716             }
 717         }
 718         finally {
 719             endUpdates();
 720         }
 721     }
 722     @Override
 723     public void onDatePicked(int year, int month, int day) {
 724         item.setDate(new SimpleDate(year, month+1, day));
 725         boolean focused = tvDescription.requestFocus();
 726         if (focused)
 727             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 728
 729     }
 730     @Override
 731     public void descriptionSelected(String description) {
 732         tvAccount.setText(description);
 733         tvAmount.requestFocus(View.FOCUS_FORWARD);
 734     }
 735 }