]> git.ktnx.net Git - mobile-ledger.git/blob - app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionItemHolder.java
whitespace
[mobile-ledger.git] / 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.getProfile();
136
137         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
138             final int id = v.getId();
139             if (hasFocus) {
140                 boolean wasSyncing = syncingData;
141                 syncingData = true;
142                 try {
143                     final int pos = getAdapterPosition();
144                     adapter.updateFocusedItem(pos);
145                     switch (id) {
146                         case R.id.account_row_acc_name:
147                             adapter.noteFocusIsOnAccount(pos);
148                             break;
149                         case R.id.account_row_acc_amounts:
150                             adapter.noteFocusIsOnAmount(pos);
151                             break;
152                         case R.id.comment:
153                             adapter.noteFocusIsOnComment(pos);
154                             break;
155                         case R.id.transaction_comment:
156                             adapter.noteFocusIsOnTransactionComment(pos);
157                             break;
158                         case R.id.new_transaction_description:
159                             adapter.noteFocusIsOnDescription(pos);
160                             break;
161                     }
162                 }
163                 finally {
164                     syncingData = wasSyncing;
165                 }
166             }
167
168             if (id == R.id.comment) {
169                 commentFocusChanged(tvComment, hasFocus);
170             }
171             else if (id == R.id.transaction_comment) {
172                 commentFocusChanged(tvTransactionComment, hasFocus);
173             }
174         };
175
176         tvDescription.setOnFocusChangeListener(focusMonitor);
177         tvAccount.setOnFocusChangeListener(focusMonitor);
178         tvAmount.setOnFocusChangeListener(focusMonitor);
179         tvComment.setOnFocusChangeListener(focusMonitor);
180         tvTransactionComment.setOnFocusChangeListener(focusMonitor);
181
182         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
183                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
184         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
185                 "name", true, this, mProfile);
186
187         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
188                                                               .getMonetaryDecimalSeparator());
189         localeObserver = locale -> decimalSeparator = String.valueOf(
190                 DecimalFormatSymbols.getInstance(locale)
191                                     .getMonetaryDecimalSeparator());
192
193         decimalDot = ".";
194
195         final TextWatcher tw = new TextWatcher() {
196             @Override
197             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
198             }
199
200             @Override
201             public void onTextChanged(CharSequence s, int start, int before, int count) {
202             }
203
204             @Override
205             public void afterTextChanged(Editable s) {
206 //                debug("input", "text changed");
207                 if (inUpdate)
208                     return;
209
210                 Logger.debug("textWatcher", "calling syncData()");
211                 syncData();
212                 Logger.debug("textWatcher",
213                         "syncData() returned, checking if transaction is submittable");
214                 adapter.checkTransactionSubmittable();
215                 Logger.debug("textWatcher", "done");
216             }
217         };
218         final TextWatcher amountWatcher = new TextWatcher() {
219             @Override
220             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
221                 Logger.debug("num",
222                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
223                                 start, count, after));
224             }
225             @Override
226             public void onTextChanged(CharSequence s, int start, int before, int count) {}
227             @Override
228             public void afterTextChanged(Editable s) {
229
230                 if (syncData())
231                     adapter.checkTransactionSubmittable();
232             }
233         };
234         tvDescription.addTextChangedListener(tw);
235         tvTransactionComment.addTextChangedListener(tw);
236         tvAccount.addTextChangedListener(tw);
237         tvComment.addTextChangedListener(tw);
238         tvAmount.addTextChangedListener(amountWatcher);
239
240         tvCurrency.setOnClickListener(v -> {
241             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
242             cpf.showPositionAndPadding();
243             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
244             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
245             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
246         });
247
248         dateObserver = date -> {
249             if (syncingData)
250                 return;
251             syncingData = true;
252             try {
253                 tvDate.setText(item.getFormattedDate());
254             }
255             finally {
256                 syncingData = false;
257             }
258         };
259         descriptionObserver = description -> {
260             if (syncingData)
261                 return;
262             syncingData = true;
263             try {
264                 tvDescription.setText(description);
265             }
266             finally {
267                 syncingData = false;
268             }
269         };
270         transactionCommentObserver = transactionComment -> {
271             final View focusedView = tvTransactionComment.findFocus();
272             tvTransactionComment.setTypeface(null,
273                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
274             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
275                                                 Misc.isEmptyOrNull(transactionComment))
276                                                ? View.INVISIBLE : View.VISIBLE);
277
278         };
279         hintObserver = hint -> {
280             if (syncingData)
281                 return;
282             syncingData = true;
283             try {
284                 if (hint == null)
285                     tvAmount.setHint(R.string.zero_amount);
286                 else
287                     tvAmount.setHint(hint);
288             }
289             finally {
290                 syncingData = false;
291             }
292         };
293         editableObserver = this::setEditable;
294         commentFocusChanged(tvTransactionComment, false);
295         commentFocusChanged(tvComment, false);
296         focusedAccountObserver = index -> {
297             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
298                 return;
299
300             switch (item.getType()) {
301                 case generalData:
302                     // bad idea - double pop-up, and not really necessary.
303                     // the user can tap the input to get the calendar
304                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
305                     switch (item.getFocusedElement()) {
306                         case TransactionComment:
307                             tvTransactionComment.setVisibility(View.VISIBLE);
308                             tvTransactionComment.requestFocus();
309                             break;
310                         case Description:
311                             boolean focused = tvDescription.requestFocus();
312                             tvDescription.dismissDropDown();
313                             if (focused)
314                                 Misc.showSoftKeyboard(
315                                         (NewTransactionActivity) tvDescription.getContext());
316                             break;
317                     }
318                     break;
319                 case transactionRow:
320                     switch (item.getFocusedElement()) {
321                         case Amount:
322                             tvAmount.requestFocus();
323                             break;
324                         case Comment:
325                             tvComment.setVisibility(View.VISIBLE);
326                             tvComment.requestFocus();
327                             break;
328                         case Account:
329                             boolean focused = tvAccount.requestFocus();
330                             tvAccount.dismissDropDown();
331                             if (focused)
332                                 Misc.showSoftKeyboard(
333                                         (NewTransactionActivity) tvAccount.getContext());
334                             break;
335                     }
336
337                     break;
338             }
339         };
340         accountCountObserver = count -> {
341             final int adapterPosition = getAdapterPosition();
342             final int layoutPosition = getLayoutPosition();
343             Logger.debug("holder",
344                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
345                             adapterPosition, layoutPosition, item.getType()
346                                                                  .toString()
347                                                                  .concat(item.getType() ==
348                                                                          ItemType.transactionRow
349                                                                          ? String.format(Locale.US,
350                                                                          "'%s'=%s",
351                                                                          item.getAccount()
352                                                                              .getAccountName(),
353                                                                          item.getAccount()
354                                                                              .isAmountSet()
355                                                                          ? String.format(Locale.US,
356                                                                                  "%.2f",
357                                                                                  item.getAccount()
358                                                                                      .getAmount())
359                                                                          : "unset") : "")));
360             if (adapterPosition == count)
361                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
362             else
363                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
364         };
365
366         currencyObserver = currency -> {
367             setCurrency(currency);
368             adapter.checkTransactionSubmittable();
369         };
370
371         currencyGapObserver =
372                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
373                         hasGap);
374
375         currencyPositionObserver =
376                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
377
378         showCurrencyObserver = showCurrency -> {
379             if (showCurrency) {
380                 tvCurrency.setVisibility(View.VISIBLE);
381             }
382             else {
383                 tvCurrency.setVisibility(View.GONE);
384                 item.setCurrency(null);
385             }
386         };
387
388         commentObserver = comment -> {
389             final View focusedView = tvComment.findFocus();
390             tvComment.setTypeface(null,
391                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
392             tvComment.setVisibility(
393                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
394                                                                                 : View.VISIBLE);
395         };
396
397         showCommentsObserver = show -> {
398             final View amountLayout = itemView.findViewById(R.id.amount_layout);
399             ConstraintLayout.LayoutParams amountLayoutParams =
400                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
401             ConstraintLayout.LayoutParams accountParams =
402                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
403             if (show) {
404                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
405                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
406
407                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
408                 amountLayoutParams.topToBottom = tvAccount.getId();
409
410                 commentLayout.setVisibility(View.VISIBLE);
411             }
412             else {
413                 accountParams.endToStart = amountLayout.getId();
414                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
415
416                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
417                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
418
419                 commentLayout.setVisibility(View.GONE);
420             }
421
422             tvAccount.setLayoutParams(accountParams);
423             amountLayout.setLayoutParams(amountLayoutParams);
424
425             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
426         };
427
428         amountValidityObserver = valid -> {
429             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
430                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
431             tvAmount.setMinEms(valid ? 4 : 5);
432         };
433     }
434     private void commentFocusChanged(TextView textView, boolean hasFocus) {
435         @ColorInt int textColor;
436         textColor = tvDummy.getTextColors()
437                            .getDefaultColor();
438         if (hasFocus) {
439             textView.setTypeface(null, Typeface.NORMAL);
440             textView.setHint(R.string.transaction_account_comment_hint);
441         }
442         else {
443             int alpha = (textColor >> 24 & 0xff);
444             alpha = 3 * alpha / 4;
445             textColor = (alpha << 24) | (0x00ffffff & textColor);
446             textView.setTypeface(null, Typeface.ITALIC);
447             textView.setHint("");
448             if (Misc.isEmptyOrNull(textView.getText())) {
449                 textView.setVisibility(View.INVISIBLE);
450             }
451         }
452         textView.setTextColor(textColor);
453
454     }
455     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
456         ConstraintLayout.LayoutParams amountLP =
457                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
458         ConstraintLayout.LayoutParams currencyLP =
459                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
460
461         if (position == Currency.Position.before) {
462             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
463             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
464
465             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
466             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
467             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
468             amountLP.startToEnd = tvCurrency.getId();
469
470             tvCurrency.setGravity(Gravity.END);
471         }
472         else {
473             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
474             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
475
476             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
477             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
478             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
479             amountLP.endToStart = tvCurrency.getId();
480
481             tvCurrency.setGravity(Gravity.START);
482         }
483
484         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
485         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
486
487         tvAmount.setLayoutParams(amountLP);
488         tvCurrency.setLayoutParams(currencyLP);
489
490         // distance between the amount and the currency symbol
491         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
492
493         if (position == Currency.Position.before) {
494             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
495         }
496         else {
497             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
498         }
499     }
500     private void setCurrencyString(String currency) {
501         @ColorInt int textColor = tvDummy.getTextColors()
502                                          .getDefaultColor();
503         if ((currency == null) || currency.isEmpty()) {
504             tvCurrency.setText(R.string.currency_symbol);
505             int alpha = (textColor >> 24) & 0xff;
506             alpha = alpha * 3 / 4;
507             tvCurrency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
508         }
509         else {
510             tvCurrency.setText(currency);
511             tvCurrency.setTextColor(textColor);
512         }
513     }
514     private void setCurrency(Currency currency) {
515         setCurrencyString((currency == null) ? null : currency.getName());
516     }
517     private void setEditable(Boolean editable) {
518         tvDate.setEnabled(editable);
519         tvDescription.setEnabled(editable);
520         tvAccount.setEnabled(editable);
521         tvAmount.setEnabled(editable);
522     }
523     private void beginUpdates() {
524         if (inUpdate)
525             throw new RuntimeException("Already in update mode");
526         inUpdate = true;
527     }
528     private void endUpdates() {
529         if (!inUpdate)
530             throw new RuntimeException("Not in update mode");
531         inUpdate = false;
532     }
533     /**
534      * syncData()
535      * <p>
536      * Stores the data from the UI elements into the model item
537      * Returns true if there were changes made that suggest transaction has to be
538      * checked for being submittable
539      */
540     private boolean syncData() {
541         if (item == null)
542             return false;
543
544         if (syncingData) {
545             Logger.debug("new-trans", "skipping syncData() loop");
546             return false;
547         }
548
549         syncingData = true;
550
551         try {
552             switch (item.getType()) {
553                 case generalData:
554                     item.setDate(String.valueOf(tvDate.getText()));
555                     item.setDescription(String.valueOf(tvDescription.getText()));
556                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
557                     break;
558                 case transactionRow:
559                     final LedgerTransactionAccount account = item.getAccount();
560                     account.setAccountName(String.valueOf(tvAccount.getText()));
561
562                     item.setComment(String.valueOf(tvComment.getText()));
563
564                     String amount = String.valueOf(tvAmount.getText());
565                     amount = amount.trim();
566
567                     if (amount.isEmpty()) {
568                         account.resetAmount();
569                         item.validateAmount();
570                     }
571                     else {
572                         try {
573                             amount = amount.replace(decimalSeparator, decimalDot);
574                             account.setAmount(Float.parseFloat(amount));
575                             item.validateAmount();
576                         }
577                         catch (NumberFormatException e) {
578                             Logger.debug("new-trans", String.format(
579                                     "assuming amount is not set due to number format exception. " +
580                                     "input was '%s'", amount));
581                             account.invalidateAmount();
582                             item.invalidateAmount();
583                         }
584                         final String curr = String.valueOf(tvCurrency.getText());
585                         if (curr.equals(tvCurrency.getContext()
586                                                   .getResources()
587                                                   .getString(R.string.currency_symbol)) ||
588                             curr.isEmpty())
589                             account.setCurrency(null);
590                         else
591                             account.setCurrency(curr);
592                     }
593
594                     break;
595                 case bottomFiller:
596                     throw new RuntimeException("Should not happen");
597             }
598
599             return true;
600         }
601         catch (ParseException e) {
602             throw new RuntimeException("Should not happen", e);
603         }
604         finally {
605             syncingData = false;
606         }
607     }
608     private void pickTransactionDate() {
609         DatePickerFragment picker = new DatePickerFragment();
610         picker.setFutureDates(mProfile.getFutureDates());
611         picker.setOnDatePickedListener(this);
612         picker.setCurrentDateFromText(tvDate.getText());
613         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
614                 null);
615     }
616     /**
617      * setData
618      *
619      * @param item updates the UI elements with the data from the model item
620      */
621     @SuppressLint("DefaultLocale")
622     public void setData(NewTransactionModel.Item item) {
623         beginUpdates();
624         try {
625             if (this.item != null && !this.item.equals(item)) {
626                 this.item.stopObservingDate(dateObserver);
627                 this.item.stopObservingDescription(descriptionObserver);
628                 this.item.stopObservingTransactionComment(transactionCommentObserver);
629                 this.item.stopObservingAmountHint(hintObserver);
630                 this.item.stopObservingEditableFlag(editableObserver);
631                 this.item.getModel()
632                          .stopObservingFocusedItem(focusedAccountObserver);
633                 this.item.getModel()
634                          .stopObservingAccountCount(accountCountObserver);
635                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
636                 Data.currencyGap.removeObserver(currencyGapObserver);
637                 Data.locale.removeObserver(localeObserver);
638                 this.item.stopObservingCurrency(currencyObserver);
639                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
640                 this.item.stopObservingComment(commentObserver);
641                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
642                 this.item.stopObservingAmountValidity(amountValidityObserver);
643
644                 this.item = null;
645             }
646
647             switch (item.getType()) {
648                 case generalData:
649                     tvDate.setText(item.getFormattedDate());
650                     tvDescription.setText(item.getDescription());
651                     tvTransactionComment.setText(item.getTransactionComment());
652                     lHead.setVisibility(View.VISIBLE);
653                     lAccount.setVisibility(View.GONE);
654                     lPadding.setVisibility(View.GONE);
655                     setEditable(true);
656                     break;
657                 case transactionRow:
658                     LedgerTransactionAccount acc = item.getAccount();
659                     tvAccount.setText(acc.getAccountName());
660                     tvComment.setText(acc.getComment());
661                     if (acc.isAmountSet()) {
662                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
663                     }
664                     else {
665                         tvAmount.setText("");
666 //                        tvAmount.setHint(R.string.zero_amount);
667                     }
668                     tvAmount.setHint(item.getAmountHint());
669                     setCurrencyString(acc.getCurrency());
670                     lHead.setVisibility(View.GONE);
671                     lAccount.setVisibility(View.VISIBLE);
672                     lPadding.setVisibility(View.GONE);
673                     setEditable(true);
674                     break;
675                 case bottomFiller:
676                     lHead.setVisibility(View.GONE);
677                     lAccount.setVisibility(View.GONE);
678                     lPadding.setVisibility(View.VISIBLE);
679                     setEditable(false);
680                     break;
681             }
682             if (this.item == null) { // was null or has changed
683                 this.item = item;
684                 final NewTransactionActivity activity =
685                         (NewTransactionActivity) tvDescription.getContext();
686
687                 if (!item.isOfType(ItemType.bottomFiller)) {
688                     item.observeEditableFlag(activity, editableObserver);
689                     item.getModel()
690                         .observeFocusedItem(activity, focusedAccountObserver);
691                     item.getModel()
692                         .observeShowComments(activity, showCommentsObserver);
693                 }
694                 switch (item.getType()) {
695                     case generalData:
696                         item.observeDate(activity, dateObserver);
697                         item.observeDescription(activity, descriptionObserver);
698                         item.observeTransactionComment(activity, transactionCommentObserver);
699                         break;
700                     case transactionRow:
701                         item.observeAmountHint(activity, hintObserver);
702                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
703                         Data.currencyGap.observe(activity, currencyGapObserver);
704                         Data.locale.observe(activity, localeObserver);
705                         item.observeCurrency(activity, currencyObserver);
706                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
707                         item.observeComment(activity, commentObserver);
708                         item.getModel()
709                             .observeAccountCount(activity, accountCountObserver);
710                         item.observeAmountValidity(activity, amountValidityObserver);
711                         break;
712                 }
713             }
714         }
715         finally {
716             endUpdates();
717         }
718     }
719     @Override
720     public void onDatePicked(int year, int month, int day) {
721         item.setDate(new SimpleDate(year, month + 1, day));
722         boolean focused = tvDescription.requestFocus();
723         if (focused)
724             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
725
726     }
727     @Override
728     public void descriptionSelected(String description) {
729         tvAccount.setText(description);
730         tvAmount.requestFocus(View.FOCUS_FORWARD);
731     }
732 }