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

   1 /*
   2  * Copyright © 2021 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.new_transaction;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextUtils;
  24 import android.text.TextWatcher;
  25 import android.view.Gravity;
  26 import android.view.View;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.TextView;
  29
  30 import androidx.annotation.ColorInt;
  31 import androidx.annotation.NonNull;
  32 import androidx.appcompat.app.AppCompatActivity;
  33 import androidx.constraintlayout.widget.ConstraintLayout;
  34 import androidx.lifecycle.Observer;
  35 import androidx.recyclerview.widget.RecyclerView;
  36
  37 import net.ktnx.mobileledger.R;
  38 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  39 import net.ktnx.mobileledger.databinding.NewTransactionRowBinding;
  40 import net.ktnx.mobileledger.model.Currency;
  41 import net.ktnx.mobileledger.model.Data;
  42 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  43 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  44 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  45 import net.ktnx.mobileledger.ui.DatePickerFragment;
  46 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  47 import net.ktnx.mobileledger.utils.DimensionUtils;
  48 import net.ktnx.mobileledger.utils.Logger;
  49 import net.ktnx.mobileledger.utils.MLDB;
  50 import net.ktnx.mobileledger.utils.Misc;
  51 import net.ktnx.mobileledger.utils.SimpleDate;
  52
  53 import java.text.DecimalFormatSymbols;
  54 import java.text.ParseException;
  55 import java.util.Date;
  56 import java.util.Locale;
  57
  58 import static net.ktnx.mobileledger.ui.new_transaction.NewTransactionModel.ItemType;
  59
  60 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  61         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  62     private final String decimalDot;
  63     private final Observer<Boolean> showCommentsObserver;
  64     private final MobileLedgerProfile mProfile;
  65     private final Observer<SimpleDate> dateObserver;
  66     private final Observer<String> descriptionObserver;
  67     private final Observer<String> transactionCommentObserver;
  68     private final Observer<String> hintObserver;
  69     private final Observer<Integer> focusedAccountObserver;
  70     private final Observer<Integer> accountCountObserver;
  71     private final Observer<Boolean> editableObserver;
  72     private final Observer<Currency.Position> currencyPositionObserver;
  73     private final Observer<Boolean> currencyGapObserver;
  74     private final Observer<Locale> localeObserver;
  75     private final Observer<Currency> currencyObserver;
  76     private final Observer<Boolean> showCurrencyObserver;
  77     private final Observer<String> commentObserver;
  78     private final Observer<Boolean> amountValidityObserver;
  79     private final NewTransactionRowBinding b;
  80     private String decimalSeparator;
  81     private NewTransactionModel.Item item;
  82     private Date date;
  83     private boolean inUpdate = false;
  84     private boolean syncingData = false;
  85     //TODO multiple amounts with different currencies per posting
  86     NewTransactionItemHolder(@NonNull NewTransactionRowBinding b,
  87                              NewTransactionItemsAdapter adapter) {
  88         super(b.getRoot());
  89         this.b = b;
  90         new TextViewClearHelper().attachToTextView(b.comment);
  91
  92         b.newTransactionDescription.setNextFocusForwardId(View.NO_ID);
  93         b.accountRowAccName.setNextFocusForwardId(View.NO_ID);
  94         b.accountRowAccAmounts.setNextFocusForwardId(View.NO_ID); // magic!
  95
  96         b.newTransactionDate.setOnClickListener(v -> pickTransactionDate());
  97
  98         b.accountCommentButton.setOnClickListener(v -> {
  99             b.comment.setVisibility(View.VISIBLE);
 100             b.comment.requestFocus();
 101         });
 102
 103         b.transactionCommentButton.setOnClickListener(v -> {
 104             b.transactionComment.setVisibility(View.VISIBLE);
 105             b.transactionComment.requestFocus();
 106         });
 107
 108         mProfile = Data.getProfile();
 109
 110         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 111             final int id = v.getId();
 112             if (hasFocus) {
 113                 boolean wasSyncing = syncingData;
 114                 syncingData = true;
 115                 try {
 116                     final int pos = getAdapterPosition();
 117                     adapter.updateFocusedItem(pos);
 118                     if (id == R.id.account_row_acc_name) {
 119                         adapter.noteFocusIsOnAccount(pos);
 120                     }
 121                     else if (id == R.id.account_row_acc_amounts) {
 122                         adapter.noteFocusIsOnAmount(pos);
 123                     }
 124                     else if (id == R.id.comment) {
 125                         adapter.noteFocusIsOnComment(pos);
 126                     }
 127                     else if (id == R.id.transaction_comment) {
 128                         adapter.noteFocusIsOnTransactionComment(pos);
 129                     }
 130                     else if (id == R.id.new_transaction_description) {
 131                         adapter.noteFocusIsOnDescription(pos);
 132                     }
 133                 }
 134                 finally {
 135                     syncingData = wasSyncing;
 136                 }
 137             }
 138
 139             if (id == R.id.comment) {
 140                 commentFocusChanged(b.comment, hasFocus);
 141             }
 142             else if (id == R.id.transaction_comment) {
 143                 commentFocusChanged(b.transactionComment, hasFocus);
 144             }
 145         };
 146
 147         b.newTransactionDescription.setOnFocusChangeListener(focusMonitor);
 148         b.accountRowAccName.setOnFocusChangeListener(focusMonitor);
 149         b.accountRowAccAmounts.setOnFocusChangeListener(focusMonitor);
 150         b.comment.setOnFocusChangeListener(focusMonitor);
 151         b.transactionComment.setOnFocusChangeListener(focusMonitor);
 152
 153         MLDB.hookAutocompletionAdapter(b.getRoot()
 154                                         .getContext(), b.newTransactionDescription,
 155                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 156         MLDB.hookAutocompletionAdapter(b.getRoot()
 157                                         .getContext(), b.accountRowAccName, MLDB.ACCOUNTS_TABLE,
 158                 "name", true, this, mProfile);
 159
 160         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 161                                                               .getMonetaryDecimalSeparator());
 162         localeObserver = locale -> decimalSeparator = String.valueOf(
 163                 DecimalFormatSymbols.getInstance(locale)
 164                                     .getMonetaryDecimalSeparator());
 165
 166         decimalDot = ".";
 167
 168         final TextWatcher tw = new TextWatcher() {
 169             @Override
 170             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 171             }
 172
 173             @Override
 174             public void onTextChanged(CharSequence s, int start, int before, int count) {
 175             }
 176
 177             @Override
 178             public void afterTextChanged(Editable s) {
 179 //                debug("input", "text changed");
 180                 if (inUpdate)
 181                     return;
 182
 183                 Logger.debug("textWatcher", "calling syncData()");
 184                 syncData();
 185                 Logger.debug("textWatcher",
 186                         "syncData() returned, checking if transaction is submittable");
 187                 adapter.checkTransactionSubmittable();
 188                 Logger.debug("textWatcher", "done");
 189             }
 190         };
 191         final TextWatcher amountWatcher = new TextWatcher() {
 192             @Override
 193             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 194                 Logger.debug("num",
 195                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 196                                 start, count, after));
 197             }
 198             @Override
 199             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 200             @Override
 201             public void afterTextChanged(Editable s) {
 202
 203                 if (syncData())
 204                     adapter.checkTransactionSubmittable();
 205             }
 206         };
 207         b.newTransactionDescription.addTextChangedListener(tw);
 208         b.transactionComment.addTextChangedListener(tw);
 209         b.accountRowAccName.addTextChangedListener(tw);
 210         b.comment.addTextChangedListener(tw);
 211         b.accountRowAccAmounts.addTextChangedListener(amountWatcher);
 212
 213         b.currencyButton.setOnClickListener(v -> {
 214             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 215             cpf.showPositionAndPadding();
 216             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 217             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 218             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 219         });
 220
 221         dateObserver = date -> {
 222             if (syncingData)
 223                 return;
 224             syncingData = true;
 225             try {
 226                 b.newTransactionDate.setText(item.getFormattedDate());
 227             }
 228             finally {
 229                 syncingData = false;
 230             }
 231         };
 232         descriptionObserver = description -> {
 233             if (syncingData)
 234                 return;
 235             syncingData = true;
 236             try {
 237                 b.newTransactionDescription.setText(description);
 238             }
 239             finally {
 240                 syncingData = false;
 241             }
 242         };
 243         transactionCommentObserver = transactionComment -> {
 244             final View focusedView = b.transactionComment.findFocus();
 245             b.transactionComment.setTypeface(null,
 246                     (focusedView == b.transactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 247             b.transactionComment.setVisibility(
 248                     ((focusedView != b.transactionComment) && TextUtils.isEmpty(transactionComment))
 249                     ? View.INVISIBLE : View.VISIBLE);
 250
 251         };
 252         hintObserver = hint -> {
 253             if (syncingData)
 254                 return;
 255             syncingData = true;
 256             try {
 257                 if (hint == null)
 258                     b.accountRowAccAmounts.setHint(R.string.zero_amount);
 259                 else
 260                     b.accountRowAccAmounts.setHint(hint);
 261             }
 262             finally {
 263                 syncingData = false;
 264             }
 265         };
 266         editableObserver = this::setEditable;
 267         commentFocusChanged(b.transactionComment, false);
 268         commentFocusChanged(b.comment, false);
 269         focusedAccountObserver = index -> {
 270             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 271                 return;
 272
 273             switch (item.getType()) {
 274                 case generalData:
 275                     // bad idea - double pop-up, and not really necessary.
 276                     // the user can tap the input to get the calendar
 277                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 278                     switch (item.getFocusedElement()) {
 279                         case TransactionComment:
 280                             b.transactionComment.setVisibility(View.VISIBLE);
 281                             b.transactionComment.requestFocus();
 282                             break;
 283                         case Description:
 284                             boolean focused = b.newTransactionDescription.requestFocus();
 285 //                            tvDescription.dismissDropDown();
 286                             if (focused)
 287                                 Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 288                                                                                 .getContext());
 289                             break;
 290                     }
 291                     break;
 292                 case transactionRow:
 293                     switch (item.getFocusedElement()) {
 294                         case Amount:
 295                             b.accountRowAccAmounts.requestFocus();
 296                             break;
 297                         case Comment:
 298                             b.comment.setVisibility(View.VISIBLE);
 299                             b.comment.requestFocus();
 300                             break;
 301                         case Account:
 302                             boolean focused = b.accountRowAccName.requestFocus();
 303                             b.accountRowAccName.dismissDropDown();
 304                             if (focused)
 305                                 Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 306                                                                                 .getContext());
 307                             break;
 308                     }
 309
 310                     break;
 311             }
 312         };
 313         accountCountObserver = count -> {
 314             final int adapterPosition = getAdapterPosition();
 315             final int layoutPosition = getLayoutPosition();
 316             Logger.debug("holder",
 317                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 318                             adapterPosition, layoutPosition, item.getType()
 319                                                                  .toString()
 320                                                                  .concat(item.getType() ==
 321                                                                          ItemType.transactionRow
 322                                                                          ? String.format(Locale.US,
 323                                                                          "'%s'=%s",
 324                                                                          item.getAccount()
 325                                                                              .getAccountName(),
 326                                                                          item.getAccount()
 327                                                                              .isAmountSet()
 328                                                                          ? String.format(Locale.US,
 329                                                                                  "%.2f",
 330                                                                                  item.getAccount()
 331                                                                                      .getAmount())
 332                                                                          : "unset") : "")));
 333             if (adapterPosition == count)
 334                 b.accountRowAccAmounts.setImeOptions(EditorInfo.IME_ACTION_DONE);
 335             else
 336                 b.accountRowAccAmounts.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 337         };
 338
 339         currencyObserver = currency -> {
 340             setCurrency(currency);
 341             adapter.checkTransactionSubmittable();
 342         };
 343
 344         currencyGapObserver =
 345                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 346                         hasGap);
 347
 348         currencyPositionObserver =
 349                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 350
 351         showCurrencyObserver = showCurrency -> {
 352             if (showCurrency) {
 353                 b.currency.setVisibility(View.VISIBLE);
 354                 b.currencyButton.setVisibility(View.VISIBLE);
 355                 String defaultCommodity = mProfile.getDefaultCommodity();
 356                 item.setCurrency(
 357                         (defaultCommodity == null) ? null : Currency.loadByName(defaultCommodity));
 358             }
 359             else {
 360                 b.currency.setVisibility(View.GONE);
 361                 b.currencyButton.setVisibility(View.GONE);
 362                 item.setCurrency(null);
 363             }
 364         };
 365
 366         commentObserver = comment -> {
 367             final View focusedView = b.comment.findFocus();
 368             b.comment.setTypeface(null,
 369                     (focusedView == b.comment) ? Typeface.NORMAL : Typeface.ITALIC);
 370             b.comment.setVisibility(
 371                     ((focusedView != b.comment) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 372                                                                                : View.VISIBLE);
 373         };
 374
 375         showCommentsObserver = show -> {
 376             ConstraintLayout.LayoutParams amountLayoutParams =
 377                     (ConstraintLayout.LayoutParams) b.amountLayout.getLayoutParams();
 378             ConstraintLayout.LayoutParams accountParams =
 379                     (ConstraintLayout.LayoutParams) b.accountRowAccName.getLayoutParams();
 380             if (show) {
 381                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 382                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 383
 384                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 385                 amountLayoutParams.topToBottom = b.accountRowAccName.getId();
 386
 387                 b.commentLayout.setVisibility(View.VISIBLE);
 388             }
 389             else {
 390                 accountParams.endToStart = b.amountLayout.getId();
 391                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 392
 393                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 394                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 395
 396                 b.commentLayout.setVisibility(View.GONE);
 397             }
 398
 399             b.accountRowAccName.setLayoutParams(accountParams);
 400             b.amountLayout.setLayoutParams(amountLayoutParams);
 401
 402             b.transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 403         };
 404
 405         amountValidityObserver = valid -> {
 406             b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 407                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 408             b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 409         };
 410     }
 411     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 412         @ColorInt int textColor;
 413         textColor = b.dummyText.getTextColors()
 414                                .getDefaultColor();
 415         if (hasFocus) {
 416             textView.setTypeface(null, Typeface.NORMAL);
 417             textView.setHint(R.string.transaction_account_comment_hint);
 418         }
 419         else {
 420             int alpha = (textColor >> 24 & 0xff);
 421             alpha = 3 * alpha / 4;
 422             textColor = (alpha << 24) | (0x00ffffff & textColor);
 423             textView.setTypeface(null, Typeface.ITALIC);
 424             textView.setHint("");
 425             if (TextUtils.isEmpty(textView.getText())) {
 426                 textView.setVisibility(View.INVISIBLE);
 427             }
 428         }
 429         textView.setTextColor(textColor);
 430
 431     }
 432     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 433         ConstraintLayout.LayoutParams amountLP =
 434                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 435         ConstraintLayout.LayoutParams currencyLP =
 436                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 437
 438         if (position == Currency.Position.before) {
 439             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 440             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 441
 442             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 443             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 444             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 445             amountLP.startToEnd = b.currency.getId();
 446
 447             b.currency.setGravity(Gravity.END);
 448         }
 449         else {
 450             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 451             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 452
 453             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 454             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 455             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 456             amountLP.endToStart = b.currency.getId();
 457
 458             b.currency.setGravity(Gravity.START);
 459         }
 460
 461         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 462         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 463
 464         b.accountRowAccAmounts.setLayoutParams(amountLP);
 465         b.currency.setLayoutParams(currencyLP);
 466
 467         // distance between the amount and the currency symbol
 468         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 469
 470         if (position == Currency.Position.before) {
 471             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 472         }
 473         else {
 474             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 475         }
 476     }
 477     private void setCurrencyString(String currency) {
 478         @ColorInt int textColor = b.dummyText.getTextColors()
 479                                              .getDefaultColor();
 480         if ((currency == null) || currency.isEmpty()) {
 481             b.currency.setText(R.string.currency_symbol);
 482             int alpha = (textColor >> 24) & 0xff;
 483             alpha = alpha * 3 / 4;
 484             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 485         }
 486         else {
 487             b.currency.setText(currency);
 488             b.currency.setTextColor(textColor);
 489         }
 490     }
 491     private void setCurrency(Currency currency) {
 492         setCurrencyString((currency == null) ? null : currency.getName());
 493     }
 494     private void setEditable(Boolean editable) {
 495         b.newTransactionDate.setEnabled(editable);
 496         b.newTransactionDescription.setEnabled(editable);
 497         b.accountRowAccName.setEnabled(editable);
 498         b.accountRowAccAmounts.setEnabled(editable);
 499     }
 500     private void beginUpdates() {
 501         if (inUpdate)
 502             throw new RuntimeException("Already in update mode");
 503         inUpdate = true;
 504     }
 505     private void endUpdates() {
 506         if (!inUpdate)
 507             throw new RuntimeException("Not in update mode");
 508         inUpdate = false;
 509     }
 510     /**
 511      * syncData()
 512      * <p>
 513      * Stores the data from the UI elements into the model item
 514      * Returns true if there were changes made that suggest transaction has to be
 515      * checked for being submittable
 516      */
 517     private boolean syncData() {
 518         if (item == null)
 519             return false;
 520
 521         if (syncingData) {
 522             Logger.debug("new-trans", "skipping syncData() loop");
 523             return false;
 524         }
 525
 526         syncingData = true;
 527
 528         try {
 529             switch (item.getType()) {
 530                 case generalData:
 531                     item.setDate(String.valueOf(b.newTransactionDate.getText()));
 532                     item.setDescription(String.valueOf(b.newTransactionDescription.getText()));
 533                     item.setTransactionComment(String.valueOf(b.transactionComment.getText()));
 534                     break;
 535                 case transactionRow:
 536                     final LedgerTransactionAccount account = item.getAccount();
 537                     account.setAccountName(String.valueOf(b.accountRowAccName.getText()));
 538
 539                     item.setComment(String.valueOf(b.comment.getText()));
 540
 541                     String amount = String.valueOf(b.accountRowAccAmounts.getText());
 542                     amount = amount.trim();
 543
 544                     if (amount.isEmpty()) {
 545                         account.resetAmount();
 546                         item.validateAmount();
 547                     }
 548                     else {
 549                         try {
 550                             amount = amount.replace(decimalSeparator, decimalDot);
 551                             account.setAmount(Float.parseFloat(amount));
 552                             item.validateAmount();
 553                         }
 554                         catch (NumberFormatException e) {
 555                             Logger.debug("new-trans", String.format(
 556                                     "assuming amount is not set due to number format exception. " +
 557                                     "input was '%s'", amount));
 558                             account.invalidateAmount();
 559                             item.invalidateAmount();
 560                         }
 561                         final String curr = String.valueOf(b.currency.getText());
 562                         if (curr.equals(b.currency.getContext()
 563                                                   .getResources()
 564                                                   .getString(R.string.currency_symbol)) ||
 565                             curr.isEmpty())
 566                             account.setCurrency(null);
 567                         else
 568                             account.setCurrency(curr);
 569                     }
 570
 571                     break;
 572                 case bottomFiller:
 573                     throw new RuntimeException("Should not happen");
 574             }
 575
 576             return true;
 577         }
 578         catch (ParseException e) {
 579             throw new RuntimeException("Should not happen", e);
 580         }
 581         finally {
 582             syncingData = false;
 583         }
 584     }
 585     private void pickTransactionDate() {
 586         DatePickerFragment picker = new DatePickerFragment();
 587         picker.setFutureDates(mProfile.getFutureDates());
 588         picker.setOnDatePickedListener(this);
 589         picker.setCurrentDateFromText(b.newTransactionDate.getText());
 590         picker.show(((NewTransactionActivity) b.getRoot()
 591                                                .getContext()).getSupportFragmentManager(), null);
 592     }
 593     /**
 594      * setData
 595      *
 596      * @param item updates the UI elements with the data from the model item
 597      */
 598     @SuppressLint("DefaultLocale")
 599     public void setData(NewTransactionModel.Item item) {
 600         beginUpdates();
 601         try {
 602             if (this.item != null && !this.item.equals(item)) {
 603                 this.item.stopObservingDate(dateObserver);
 604                 this.item.stopObservingDescription(descriptionObserver);
 605                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 606                 this.item.stopObservingAmountHint(hintObserver);
 607                 this.item.stopObservingEditableFlag(editableObserver);
 608                 this.item.getModel()
 609                          .stopObservingFocusedItem(focusedAccountObserver);
 610                 this.item.getModel()
 611                          .stopObservingAccountCount(accountCountObserver);
 612                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 613                 Data.currencyGap.removeObserver(currencyGapObserver);
 614                 Data.locale.removeObserver(localeObserver);
 615                 this.item.stopObservingCurrency(currencyObserver);
 616                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 617                 this.item.stopObservingComment(commentObserver);
 618                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 619                 this.item.stopObservingAmountValidity(amountValidityObserver);
 620
 621                 this.item = null;
 622             }
 623
 624             switch (item.getType()) {
 625                 case generalData:
 626                     b.newTransactionDate.setText(item.getFormattedDate());
 627                     b.newTransactionDescription.setText(item.getDescription());
 628                     b.transactionComment.setText(item.getTransactionComment());
 629                     b.ntrData.setVisibility(View.VISIBLE);
 630                     b.ntrAccount.setVisibility(View.GONE);
 631                     b.ntrPadding.setVisibility(View.GONE);
 632                     setEditable(true);
 633                     break;
 634                 case transactionRow:
 635                     LedgerTransactionAccount acc = item.getAccount();
 636                     b.accountRowAccName.setText(acc.getAccountName());
 637                     b.comment.setText(acc.getComment());
 638                     if (acc.isAmountSet()) {
 639                         b.accountRowAccAmounts.setText(String.format("%1.2f", acc.getAmount()));
 640                     }
 641                     else {
 642                         b.accountRowAccAmounts.setText("");
 643 //                        tvAmount.setHint(R.string.zero_amount);
 644                     }
 645                     b.accountRowAccAmounts.setHint(item.getAmountHint());
 646                     setCurrencyString(acc.getCurrency());
 647                     b.ntrData.setVisibility(View.GONE);
 648                     b.ntrAccount.setVisibility(View.VISIBLE);
 649                     b.ntrPadding.setVisibility(View.GONE);
 650                     setEditable(true);
 651                     break;
 652                 case bottomFiller:
 653                     b.ntrData.setVisibility(View.GONE);
 654                     b.ntrAccount.setVisibility(View.GONE);
 655                     b.ntrPadding.setVisibility(View.VISIBLE);
 656                     setEditable(false);
 657                     break;
 658             }
 659             if (this.item == null) { // was null or has changed
 660                 this.item = item;
 661                 final NewTransactionActivity activity = (NewTransactionActivity) b.getRoot()
 662                                                                                   .getContext();
 663
 664                 if (!item.isBottomFiller()) {
 665                     item.observeEditableFlag(activity, editableObserver);
 666                     item.getModel()
 667                         .observeFocusedItem(activity, focusedAccountObserver);
 668                     item.getModel()
 669                         .observeShowComments(activity, showCommentsObserver);
 670                 }
 671                 switch (item.getType()) {
 672                     case generalData:
 673                         item.observeDate(activity, dateObserver);
 674                         item.observeDescription(activity, descriptionObserver);
 675                         item.observeTransactionComment(activity, transactionCommentObserver);
 676                         break;
 677                     case transactionRow:
 678                         item.observeAmountHint(activity, hintObserver);
 679                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 680                         Data.currencyGap.observe(activity, currencyGapObserver);
 681                         Data.locale.observe(activity, localeObserver);
 682                         item.observeCurrency(activity, currencyObserver);
 683                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 684                         item.observeComment(activity, commentObserver);
 685                         item.getModel()
 686                             .observeAccountCount(activity, accountCountObserver);
 687                         item.observeAmountValidity(activity, amountValidityObserver);
 688                         break;
 689                 }
 690             }
 691         }
 692         finally {
 693             endUpdates();
 694         }
 695     }
 696     @Override
 697     public void onDatePicked(int year, int month, int day) {
 698         item.setDate(new SimpleDate(year, month + 1, day));
 699         boolean focused = b.newTransactionDescription.requestFocus();
 700         if (focused)
 701             Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 702                                                             .getContext());
 703
 704     }
 705     @Override
 706     public void descriptionSelected(String description) {
 707         b.accountRowAccName.setText(description);
 708         b.accountRowAccAmounts.requestFocus(View.FOCUS_FORWARD);
 709     }
 710 }