app/src/main/java/net/ktnx/mobileledger/ui/activity/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.activity;
  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.EditText;
  29 import android.widget.TextView;
  30
  31 import androidx.annotation.ColorInt;
  32 import androidx.annotation.NonNull;
  33 import androidx.appcompat.app.AppCompatActivity;
  34 import androidx.constraintlayout.widget.ConstraintLayout;
  35 import androidx.lifecycle.Observer;
  36 import androidx.recyclerview.widget.RecyclerView;
  37
  38 import net.ktnx.mobileledger.R;
  39 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  40 import net.ktnx.mobileledger.databinding.NewTransactionRowBinding;
  41 import net.ktnx.mobileledger.model.Currency;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  44 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  45 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  46 import net.ktnx.mobileledger.ui.DatePickerFragment;
  47 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  48 import net.ktnx.mobileledger.utils.DimensionUtils;
  49 import net.ktnx.mobileledger.utils.Logger;
  50 import net.ktnx.mobileledger.utils.MLDB;
  51 import net.ktnx.mobileledger.utils.Misc;
  52 import net.ktnx.mobileledger.utils.SimpleDate;
  53
  54 import java.text.DecimalFormatSymbols;
  55 import java.text.ParseException;
  56 import java.util.Date;
  57 import java.util.Locale;
  58
  59 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  60
  61 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  62         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  63     private final String decimalDot;
  64     private final Observer<Boolean> showCommentsObserver;
  65     private final MobileLedgerProfile mProfile;
  66     private final Observer<SimpleDate> dateObserver;
  67     private final Observer<String> descriptionObserver;
  68     private final Observer<String> transactionCommentObserver;
  69     private final Observer<String> hintObserver;
  70     private final Observer<Integer> focusedAccountObserver;
  71     private final Observer<Integer> accountCountObserver;
  72     private final Observer<Boolean> editableObserver;
  73     private final Observer<Currency.Position> currencyPositionObserver;
  74     private final Observer<Boolean> currencyGapObserver;
  75     private final Observer<Locale> localeObserver;
  76     private final Observer<Currency> currencyObserver;
  77     private final Observer<Boolean> showCurrencyObserver;
  78     private final Observer<String> commentObserver;
  79     private final Observer<Boolean> amountValidityObserver;
  80     private final NewTransactionRowBinding b;
  81     private String decimalSeparator;
  82     private NewTransactionModel.Item item;
  83     private Date date;
  84     private boolean inUpdate = false;
  85     private boolean syncingData = false;
  86     //TODO multiple amounts with different currencies per posting
  87     NewTransactionItemHolder(@NonNull NewTransactionRowBinding b,
  88                              NewTransactionItemsAdapter adapter) {
  89         super(b.getRoot());
  90         this.b = b;
  91         new TextViewClearHelper().attachToTextView((EditText) b.comment);
  92
  93         b.newTransactionDescription.setNextFocusForwardId(View.NO_ID);
  94         b.accountRowAccName.setNextFocusForwardId(View.NO_ID);
  95         b.accountRowAccAmounts.setNextFocusForwardId(View.NO_ID); // magic!
  96
  97         b.newTransactionDate.setOnClickListener(v -> pickTransactionDate());
  98
  99         b.accountCommentButton.setOnClickListener(v -> {
 100             b.comment.setVisibility(View.VISIBLE);
 101             b.comment.requestFocus();
 102         });
 103
 104         b.transactionCommentButton.setOnClickListener(v -> {
 105             b.transactionComment.setVisibility(View.VISIBLE);
 106             b.transactionComment.requestFocus();
 107         });
 108
 109         mProfile = Data.getProfile();
 110
 111         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 112             final int id = v.getId();
 113             if (hasFocus) {
 114                 boolean wasSyncing = syncingData;
 115                 syncingData = true;
 116                 try {
 117                     final int pos = getAdapterPosition();
 118                     adapter.updateFocusedItem(pos);
 119                     if (id == R.id.account_row_acc_name) {
 120                         adapter.noteFocusIsOnAccount(pos);
 121                     }
 122                     else if (id == R.id.account_row_acc_amounts) {
 123                         adapter.noteFocusIsOnAmount(pos);
 124                     }
 125                     else if (id == R.id.comment) {
 126                         adapter.noteFocusIsOnComment(pos);
 127                     }
 128                     else if (id == R.id.transaction_comment) {
 129                         adapter.noteFocusIsOnTransactionComment(pos);
 130                     }
 131                     else if (id == R.id.new_transaction_description) {
 132                         adapter.noteFocusIsOnDescription(pos);
 133                     }
 134                 }
 135                 finally {
 136                     syncingData = wasSyncing;
 137                 }
 138             }
 139
 140             if (id == R.id.comment) {
 141                 commentFocusChanged(b.comment, hasFocus);
 142             }
 143             else if (id == R.id.transaction_comment) {
 144                 commentFocusChanged(b.transactionComment, hasFocus);
 145             }
 146         };
 147
 148         b.newTransactionDescription.setOnFocusChangeListener(focusMonitor);
 149         b.accountRowAccName.setOnFocusChangeListener(focusMonitor);
 150         b.accountRowAccAmounts.setOnFocusChangeListener(focusMonitor);
 151         b.comment.setOnFocusChangeListener(focusMonitor);
 152         b.transactionComment.setOnFocusChangeListener(focusMonitor);
 153
 154         MLDB.hookAutocompletionAdapter(b.getRoot()
 155                                         .getContext(), b.newTransactionDescription,
 156                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 157         MLDB.hookAutocompletionAdapter(b.getRoot()
 158                                         .getContext(), b.accountRowAccName, MLDB.ACCOUNTS_TABLE,
 159                 "name", true, this, mProfile);
 160
 161         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 162                                                               .getMonetaryDecimalSeparator());
 163         localeObserver = locale -> decimalSeparator = String.valueOf(
 164                 DecimalFormatSymbols.getInstance(locale)
 165                                     .getMonetaryDecimalSeparator());
 166
 167         decimalDot = ".";
 168
 169         final TextWatcher tw = new TextWatcher() {
 170             @Override
 171             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 172             }
 173
 174             @Override
 175             public void onTextChanged(CharSequence s, int start, int before, int count) {
 176             }
 177
 178             @Override
 179             public void afterTextChanged(Editable s) {
 180 //                debug("input", "text changed");
 181                 if (inUpdate)
 182                     return;
 183
 184                 Logger.debug("textWatcher", "calling syncData()");
 185                 syncData();
 186                 Logger.debug("textWatcher",
 187                         "syncData() returned, checking if transaction is submittable");
 188                 adapter.checkTransactionSubmittable();
 189                 Logger.debug("textWatcher", "done");
 190             }
 191         };
 192         final TextWatcher amountWatcher = new TextWatcher() {
 193             @Override
 194             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 195                 Logger.debug("num",
 196                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 197                                 start, count, after));
 198             }
 199             @Override
 200             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 201             @Override
 202             public void afterTextChanged(Editable s) {
 203
 204                 if (syncData())
 205                     adapter.checkTransactionSubmittable();
 206             }
 207         };
 208         b.newTransactionDescription.addTextChangedListener(tw);
 209         b.transactionComment.addTextChangedListener(tw);
 210         b.accountRowAccName.addTextChangedListener(tw);
 211         b.comment.addTextChangedListener(tw);
 212         b.accountRowAccAmounts.addTextChangedListener(amountWatcher);
 213
 214         b.currencyButton.setOnClickListener(v -> {
 215             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 216             cpf.showPositionAndPadding();
 217             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 218             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 219             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 220         });
 221
 222         dateObserver = date -> {
 223             if (syncingData)
 224                 return;
 225             syncingData = true;
 226             try {
 227                 b.newTransactionDate.setText(item.getFormattedDate());
 228             }
 229             finally {
 230                 syncingData = false;
 231             }
 232         };
 233         descriptionObserver = description -> {
 234             if (syncingData)
 235                 return;
 236             syncingData = true;
 237             try {
 238                 b.newTransactionDescription.setText(description);
 239             }
 240             finally {
 241                 syncingData = false;
 242             }
 243         };
 244         transactionCommentObserver = transactionComment -> {
 245             final View focusedView = b.transactionComment.findFocus();
 246             b.transactionComment.setTypeface(null,
 247                     (focusedView == b.transactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 248             b.transactionComment.setVisibility(
 249                     ((focusedView != b.transactionComment) && TextUtils.isEmpty(transactionComment))
 250                     ? View.INVISIBLE : View.VISIBLE);
 251
 252         };
 253         hintObserver = hint -> {
 254             if (syncingData)
 255                 return;
 256             syncingData = true;
 257             try {
 258                 if (hint == null)
 259                     b.accountRowAccAmounts.setHint(R.string.zero_amount);
 260                 else
 261                     b.accountRowAccAmounts.setHint(hint);
 262             }
 263             finally {
 264                 syncingData = false;
 265             }
 266         };
 267         editableObserver = this::setEditable;
 268         commentFocusChanged(b.transactionComment, false);
 269         commentFocusChanged(b.comment, false);
 270         focusedAccountObserver = index -> {
 271             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 272                 return;
 273
 274             switch (item.getType()) {
 275                 case generalData:
 276                     // bad idea - double pop-up, and not really necessary.
 277                     // the user can tap the input to get the calendar
 278                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 279                     switch (item.getFocusedElement()) {
 280                         case TransactionComment:
 281                             b.transactionComment.setVisibility(View.VISIBLE);
 282                             b.transactionComment.requestFocus();
 283                             break;
 284                         case Description:
 285                             boolean focused = b.newTransactionDescription.requestFocus();
 286 //                            tvDescription.dismissDropDown();
 287                             if (focused)
 288                                 Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 289                                                                                 .getContext());
 290                             break;
 291                     }
 292                     break;
 293                 case transactionRow:
 294                     switch (item.getFocusedElement()) {
 295                         case Amount:
 296                             b.accountRowAccAmounts.requestFocus();
 297                             break;
 298                         case Comment:
 299                             b.comment.setVisibility(View.VISIBLE);
 300                             b.comment.requestFocus();
 301                             break;
 302                         case Account:
 303                             boolean focused = b.accountRowAccName.requestFocus();
 304                             b.accountRowAccName.dismissDropDown();
 305                             if (focused)
 306                                 Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 307                                                                                 .getContext());
 308                             break;
 309                     }
 310
 311                     break;
 312             }
 313         };
 314         accountCountObserver = count -> {
 315             final int adapterPosition = getAdapterPosition();
 316             final int layoutPosition = getLayoutPosition();
 317             Logger.debug("holder",
 318                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 319                             adapterPosition, layoutPosition, item.getType()
 320                                                                  .toString()
 321                                                                  .concat(item.getType() ==
 322                                                                          ItemType.transactionRow
 323                                                                          ? String.format(Locale.US,
 324                                                                          "'%s'=%s",
 325                                                                          item.getAccount()
 326                                                                              .getAccountName(),
 327                                                                          item.getAccount()
 328                                                                              .isAmountSet()
 329                                                                          ? String.format(Locale.US,
 330                                                                                  "%.2f",
 331                                                                                  item.getAccount()
 332                                                                                      .getAmount())
 333                                                                          : "unset") : "")));
 334             if (adapterPosition == count)
 335                 b.accountRowAccAmounts.setImeOptions(EditorInfo.IME_ACTION_DONE);
 336             else
 337                 b.accountRowAccAmounts.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 338         };
 339
 340         currencyObserver = currency -> {
 341             setCurrency(currency);
 342             adapter.checkTransactionSubmittable();
 343         };
 344
 345         currencyGapObserver =
 346                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 347                         hasGap);
 348
 349         currencyPositionObserver =
 350                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 351
 352         showCurrencyObserver = showCurrency -> {
 353             if (showCurrency) {
 354                 b.currency.setVisibility(View.VISIBLE);
 355                 b.currencyButton.setVisibility(View.VISIBLE);
 356                 String defaultCommodity = mProfile.getDefaultCommodity();
 357                 item.setCurrency(
 358                         (defaultCommodity == null) ? null : Currency.loadByName(defaultCommodity));
 359             }
 360             else {
 361                 b.currency.setVisibility(View.GONE);
 362                 b.currencyButton.setVisibility(View.GONE);
 363                 item.setCurrency(null);
 364             }
 365         };
 366
 367         commentObserver = comment -> {
 368             final View focusedView = b.comment.findFocus();
 369             b.comment.setTypeface(null,
 370                     (focusedView == b.comment) ? Typeface.NORMAL : Typeface.ITALIC);
 371             b.comment.setVisibility(
 372                     ((focusedView != b.comment) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 373                                                                                : View.VISIBLE);
 374         };
 375
 376         showCommentsObserver = show -> {
 377             ConstraintLayout.LayoutParams amountLayoutParams =
 378                     (ConstraintLayout.LayoutParams) b.amountLayout.getLayoutParams();
 379             ConstraintLayout.LayoutParams accountParams =
 380                     (ConstraintLayout.LayoutParams) b.accountRowAccName.getLayoutParams();
 381             if (show) {
 382                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 383                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 384
 385                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 386                 amountLayoutParams.topToBottom = b.accountRowAccName.getId();
 387
 388                 b.commentLayout.setVisibility(View.VISIBLE);
 389             }
 390             else {
 391                 accountParams.endToStart = b.amountLayout.getId();
 392                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 393
 394                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 395                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 396
 397                 b.commentLayout.setVisibility(View.GONE);
 398             }
 399
 400             b.accountRowAccName.setLayoutParams(accountParams);
 401             b.amountLayout.setLayoutParams(amountLayoutParams);
 402
 403             b.transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 404         };
 405
 406         amountValidityObserver = valid -> {
 407             b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 408                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 409             b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 410         };
 411     }
 412     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 413         @ColorInt int textColor;
 414         textColor = b.dummyText.getTextColors()
 415                                .getDefaultColor();
 416         if (hasFocus) {
 417             textView.setTypeface(null, Typeface.NORMAL);
 418             textView.setHint(R.string.transaction_account_comment_hint);
 419         }
 420         else {
 421             int alpha = (textColor >> 24 & 0xff);
 422             alpha = 3 * alpha / 4;
 423             textColor = (alpha << 24) | (0x00ffffff & textColor);
 424             textView.setTypeface(null, Typeface.ITALIC);
 425             textView.setHint("");
 426             if (TextUtils.isEmpty(textView.getText())) {
 427                 textView.setVisibility(View.INVISIBLE);
 428             }
 429         }
 430         textView.setTextColor(textColor);
 431
 432     }
 433     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 434         ConstraintLayout.LayoutParams amountLP =
 435                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 436         ConstraintLayout.LayoutParams currencyLP =
 437                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 438
 439         if (position == Currency.Position.before) {
 440             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 441             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 442
 443             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 444             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 445             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 446             amountLP.startToEnd = b.currency.getId();
 447
 448             b.currency.setGravity(Gravity.END);
 449         }
 450         else {
 451             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 452             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 453
 454             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 455             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 456             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 457             amountLP.endToStart = b.currency.getId();
 458
 459             b.currency.setGravity(Gravity.START);
 460         }
 461
 462         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 463         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 464
 465         b.accountRowAccAmounts.setLayoutParams(amountLP);
 466         b.currency.setLayoutParams(currencyLP);
 467
 468         // distance between the amount and the currency symbol
 469         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 470
 471         if (position == Currency.Position.before) {
 472             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 473         }
 474         else {
 475             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 476         }
 477     }
 478     private void setCurrencyString(String currency) {
 479         @ColorInt int textColor = b.dummyText.getTextColors()
 480                                              .getDefaultColor();
 481         if ((currency == null) || currency.isEmpty()) {
 482             b.currency.setText(R.string.currency_symbol);
 483             int alpha = (textColor >> 24) & 0xff;
 484             alpha = alpha * 3 / 4;
 485             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 486         }
 487         else {
 488             b.currency.setText(currency);
 489             b.currency.setTextColor(textColor);
 490         }
 491     }
 492     private void setCurrency(Currency currency) {
 493         setCurrencyString((currency == null) ? null : currency.getName());
 494     }
 495     private void setEditable(Boolean editable) {
 496         b.newTransactionDate.setEnabled(editable);
 497         b.newTransactionDescription.setEnabled(editable);
 498         b.accountRowAccName.setEnabled(editable);
 499         b.accountRowAccAmounts.setEnabled(editable);
 500     }
 501     private void beginUpdates() {
 502         if (inUpdate)
 503             throw new RuntimeException("Already in update mode");
 504         inUpdate = true;
 505     }
 506     private void endUpdates() {
 507         if (!inUpdate)
 508             throw new RuntimeException("Not in update mode");
 509         inUpdate = false;
 510     }
 511     /**
 512      * syncData()
 513      * <p>
 514      * Stores the data from the UI elements into the model item
 515      * Returns true if there were changes made that suggest transaction has to be
 516      * checked for being submittable
 517      */
 518     private boolean syncData() {
 519         if (item == null)
 520             return false;
 521
 522         if (syncingData) {
 523             Logger.debug("new-trans", "skipping syncData() loop");
 524             return false;
 525         }
 526
 527         syncingData = true;
 528
 529         try {
 530             switch (item.getType()) {
 531                 case generalData:
 532                     item.setDate(String.valueOf(b.newTransactionDate.getText()));
 533                     item.setDescription(String.valueOf(b.newTransactionDescription.getText()));
 534                     item.setTransactionComment(String.valueOf(b.transactionComment.getText()));
 535                     break;
 536                 case transactionRow:
 537                     final LedgerTransactionAccount account = item.getAccount();
 538                     account.setAccountName(String.valueOf(b.accountRowAccName.getText()));
 539
 540                     item.setComment(String.valueOf(b.comment.getText()));
 541
 542                     String amount = String.valueOf(b.accountRowAccAmounts.getText());
 543                     amount = amount.trim();
 544
 545                     if (amount.isEmpty()) {
 546                         account.resetAmount();
 547                         item.validateAmount();
 548                     }
 549                     else {
 550                         try {
 551                             amount = amount.replace(decimalSeparator, decimalDot);
 552                             account.setAmount(Float.parseFloat(amount));
 553                             item.validateAmount();
 554                         }
 555                         catch (NumberFormatException e) {
 556                             Logger.debug("new-trans", String.format(
 557                                     "assuming amount is not set due to number format exception. " +
 558                                     "input was '%s'", amount));
 559                             account.invalidateAmount();
 560                             item.invalidateAmount();
 561                         }
 562                         final String curr = String.valueOf(b.currency.getText());
 563                         if (curr.equals(b.currency.getContext()
 564                                                   .getResources()
 565                                                   .getString(R.string.currency_symbol)) ||
 566                             curr.isEmpty())
 567                             account.setCurrency(null);
 568                         else
 569                             account.setCurrency(curr);
 570                     }
 571
 572                     break;
 573                 case bottomFiller:
 574                     throw new RuntimeException("Should not happen");
 575             }
 576
 577             return true;
 578         }
 579         catch (ParseException e) {
 580             throw new RuntimeException("Should not happen", e);
 581         }
 582         finally {
 583             syncingData = false;
 584         }
 585     }
 586     private void pickTransactionDate() {
 587         DatePickerFragment picker = new DatePickerFragment();
 588         picker.setFutureDates(mProfile.getFutureDates());
 589         picker.setOnDatePickedListener(this);
 590         picker.setCurrentDateFromText(b.newTransactionDate.getText());
 591         picker.show(((NewTransactionActivity) b.getRoot()
 592                                                .getContext()).getSupportFragmentManager(), null);
 593     }
 594     /**
 595      * setData
 596      *
 597      * @param item updates the UI elements with the data from the model item
 598      */
 599     @SuppressLint("DefaultLocale")
 600     public void setData(NewTransactionModel.Item item) {
 601         beginUpdates();
 602         try {
 603             if (this.item != null && !this.item.equals(item)) {
 604                 this.item.stopObservingDate(dateObserver);
 605                 this.item.stopObservingDescription(descriptionObserver);
 606                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 607                 this.item.stopObservingAmountHint(hintObserver);
 608                 this.item.stopObservingEditableFlag(editableObserver);
 609                 this.item.getModel()
 610                          .stopObservingFocusedItem(focusedAccountObserver);
 611                 this.item.getModel()
 612                          .stopObservingAccountCount(accountCountObserver);
 613                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 614                 Data.currencyGap.removeObserver(currencyGapObserver);
 615                 Data.locale.removeObserver(localeObserver);
 616                 this.item.stopObservingCurrency(currencyObserver);
 617                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 618                 this.item.stopObservingComment(commentObserver);
 619                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 620                 this.item.stopObservingAmountValidity(amountValidityObserver);
 621
 622                 this.item = null;
 623             }
 624
 625             switch (item.getType()) {
 626                 case generalData:
 627                     b.newTransactionDate.setText(item.getFormattedDate());
 628                     b.newTransactionDescription.setText(item.getDescription());
 629                     b.transactionComment.setText(item.getTransactionComment());
 630                     b.ntrData.setVisibility(View.VISIBLE);
 631                     b.ntrAccount.setVisibility(View.GONE);
 632                     b.ntrPadding.setVisibility(View.GONE);
 633                     setEditable(true);
 634                     break;
 635                 case transactionRow:
 636                     LedgerTransactionAccount acc = item.getAccount();
 637                     b.accountRowAccName.setText(acc.getAccountName());
 638                     b.comment.setText(acc.getComment());
 639                     if (acc.isAmountSet()) {
 640                         b.accountRowAccAmounts.setText(String.format("%1.2f", acc.getAmount()));
 641                     }
 642                     else {
 643                         b.accountRowAccAmounts.setText("");
 644 //                        tvAmount.setHint(R.string.zero_amount);
 645                     }
 646                     b.accountRowAccAmounts.setHint(item.getAmountHint());
 647                     setCurrencyString(acc.getCurrency());
 648                     b.ntrData.setVisibility(View.GONE);
 649                     b.ntrAccount.setVisibility(View.VISIBLE);
 650                     b.ntrPadding.setVisibility(View.GONE);
 651                     setEditable(true);
 652                     break;
 653                 case bottomFiller:
 654                     b.ntrData.setVisibility(View.GONE);
 655                     b.ntrAccount.setVisibility(View.GONE);
 656                     b.ntrPadding.setVisibility(View.VISIBLE);
 657                     setEditable(false);
 658                     break;
 659             }
 660             if (this.item == null) { // was null or has changed
 661                 this.item = item;
 662                 final NewTransactionActivity activity = (NewTransactionActivity) b.getRoot()
 663                                                                                   .getContext();
 664
 665                 if (!item.isBottomFiller()) {
 666                     item.observeEditableFlag(activity, editableObserver);
 667                     item.getModel()
 668                         .observeFocusedItem(activity, focusedAccountObserver);
 669                     item.getModel()
 670                         .observeShowComments(activity, showCommentsObserver);
 671                 }
 672                 switch (item.getType()) {
 673                     case generalData:
 674                         item.observeDate(activity, dateObserver);
 675                         item.observeDescription(activity, descriptionObserver);
 676                         item.observeTransactionComment(activity, transactionCommentObserver);
 677                         break;
 678                     case transactionRow:
 679                         item.observeAmountHint(activity, hintObserver);
 680                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 681                         Data.currencyGap.observe(activity, currencyGapObserver);
 682                         Data.locale.observe(activity, localeObserver);
 683                         item.observeCurrency(activity, currencyObserver);
 684                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 685                         item.observeComment(activity, commentObserver);
 686                         item.getModel()
 687                             .observeAccountCount(activity, accountCountObserver);
 688                         item.observeAmountValidity(activity, amountValidityObserver);
 689                         break;
 690                 }
 691             }
 692         }
 693         finally {
 694             endUpdates();
 695         }
 696     }
 697     @Override
 698     public void onDatePicked(int year, int month, int day) {
 699         item.setDate(new SimpleDate(year, month + 1, day));
 700         boolean focused = b.newTransactionDescription.requestFocus();
 701         if (focused)
 702             Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 703                                                             .getContext());
 704
 705     }
 706     @Override
 707     public void descriptionSelected(String description) {
 708         b.accountRowAccName.setText(description);
 709         b.accountRowAccAmounts.requestFocus(View.FOCUS_FORWARD);
 710     }
 711 }