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

   1 /*
   2  * Copyright © 2019 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.os.Build;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.text.method.DigitsKeyListener;
  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.FrameLayout;
  30 import android.widget.LinearLayout;
  31 import android.widget.TextView;
  32
  33 import androidx.annotation.NonNull;
  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.model.Data;
  40 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  41 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  42 import net.ktnx.mobileledger.ui.AutoCompleteTextViewWithClear;
  43 import net.ktnx.mobileledger.ui.DatePickerFragment;
  44 import net.ktnx.mobileledger.utils.Logger;
  45 import net.ktnx.mobileledger.utils.MLDB;
  46 import net.ktnx.mobileledger.utils.Misc;
  47
  48 import java.text.DecimalFormatSymbols;
  49 import java.util.Calendar;
  50 import java.util.Date;
  51 import java.util.GregorianCalendar;
  52 import java.util.Locale;
  53
  54 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  55
  56 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  57         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  58     private final String decimalSeparator;
  59     private final String decimalDot;
  60     private NewTransactionModel.Item item;
  61     private TextView tvDate;
  62     private AutoCompleteTextView tvDescription;
  63     private AutoCompleteTextView tvAccount;
  64     private TextView tvComment;
  65     private TextView tvAmount;
  66     private LinearLayout lHead;
  67     private ViewGroup lAccount;
  68     private FrameLayout lPadding;
  69     private MobileLedgerProfile mProfile;
  70     private Date date;
  71     private Observer<Date> dateObserver;
  72     private Observer<String> descriptionObserver;
  73     private Observer<String> hintObserver;
  74     private Observer<Integer> focusedAccountObserver;
  75     private Observer<Integer> accountCountObserver;
  76     private Observer<Boolean> editableObserver;
  77     private boolean inUpdate = false;
  78     private boolean syncingData = false;
  79     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
  80         super(itemView);
  81         tvAccount = itemView.findViewById(R.id.account_row_acc_name);
  82         tvComment = itemView.findViewById(R.id.comment);
  83         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
  84         tvDate = itemView.findViewById(R.id.new_transaction_date);
  85         tvDescription = itemView.findViewById(R.id.new_transaction_description);
  86         lHead = itemView.findViewById(R.id.ntr_data);
  87         lAccount = itemView.findViewById(R.id.ntr_account);
  88         lPadding = itemView.findViewById(R.id.ntr_padding);
  89
  90         tvDescription.setNextFocusForwardId(View.NO_ID);
  91         tvAccount.setNextFocusForwardId(View.NO_ID);
  92         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
  93
  94         tvDate.setOnClickListener(v -> pickTransactionDate());
  95
  96         mProfile = Data.profile.getValue();
  97         if (mProfile == null)
  98             throw new AssertionError();
  99
 100         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 101             if (hasFocus) {
 102                 boolean wasSyncing = syncingData;
 103                 syncingData = true;
 104                 try {
 105                     final int pos = getAdapterPosition();
 106                     adapter.updateFocusedItem(pos);
 107                     switch (v.getId()) {
 108                         case R.id.account_row_acc_name:
 109                             adapter.noteFocusIsOnAccount(pos);
 110                             break;
 111                         case R.id.account_row_acc_amounts:
 112                             adapter.noteFocusIsOnAmount(pos);
 113                             break;
 114                         case R.id.comment:
 115                             adapter.noteFocusIsOnComment(pos);
 116                             break;
 117                     }
 118                 }
 119                 finally {
 120                     syncingData = wasSyncing;
 121                 }
 122             }
 123         };
 124
 125         tvDescription.setOnFocusChangeListener(focusMonitor);
 126         tvAccount.setOnFocusChangeListener(focusMonitor);
 127         tvAmount.setOnFocusChangeListener(focusMonitor);
 128
 129         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 130                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 131         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 132                 "name", true, this, mProfile);
 133
 134         // FIXME: react on configuration (locale) changes
 135         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 136                                                               .getMonetaryDecimalSeparator());
 137         decimalDot = ".";
 138
 139         final TextWatcher tw = new TextWatcher() {
 140             @Override
 141             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 142             }
 143
 144             @Override
 145             public void onTextChanged(CharSequence s, int start, int before, int count) {
 146             }
 147
 148             @Override
 149             public void afterTextChanged(Editable s) {
 150 //                debug("input", "text changed");
 151                 if (inUpdate)
 152                     return;
 153
 154                 Logger.debug("textWatcher", "calling syncData()");
 155                 syncData();
 156                 Logger.debug("textWatcher",
 157                         "syncData() returned, checking if transaction is submittable");
 158                 adapter.model.checkTransactionSubmittable(adapter);
 159                 Logger.debug("textWatcher", "done");
 160             }
 161         };
 162         final TextWatcher amountWatcher = new TextWatcher() {
 163             @Override
 164             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 165             }
 166             @Override
 167             public void onTextChanged(CharSequence s, int start, int before, int count) {
 168
 169             }
 170             @Override
 171             public void afterTextChanged(Editable s) {
 172                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 173                     // only one decimal separator is allowed
 174                     // plus and minus are allowed only at the beginning
 175                     String val = s.toString();
 176                     if (val.isEmpty())
 177                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 178                                 "0123456789+-" + decimalSeparator + decimalDot));
 179                     else if (val.contains(decimalSeparator) || val.contains(decimalDot))
 180                         tvAmount.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
 181                     else
 182                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 183                                 "0123456789" + decimalSeparator + decimalDot));
 184
 185                     syncData();
 186                     adapter.model.checkTransactionSubmittable(adapter);
 187                 }
 188             }
 189         };
 190         tvDescription.addTextChangedListener(tw);
 191         tvAccount.addTextChangedListener(tw);
 192         tvComment.addTextChangedListener(tw);
 193         tvAmount.addTextChangedListener(amountWatcher);
 194
 195         // FIXME: react on locale changes
 196         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 197             tvAmount.setKeyListener(DigitsKeyListener.getInstance(Locale.getDefault(), true, true));
 198         else
 199             tvAmount.setKeyListener(
 200                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 201
 202         dateObserver = date -> {
 203             if (syncingData)
 204                 return;
 205             syncingData = true;
 206             try {
 207                 tvDate.setText(item.getFormattedDate());
 208             }
 209             finally {
 210                 syncingData = false;
 211             }
 212         };
 213         descriptionObserver = description -> {
 214             if (syncingData)
 215                 return;
 216             syncingData = true;
 217             try {
 218                 tvDescription.setText(description);
 219             }
 220             finally {
 221                 syncingData = false;
 222             }
 223         };
 224         hintObserver = hint -> {
 225             if (syncingData)
 226                 return;
 227             syncingData = true;
 228             try {
 229                 if (hint == null)
 230                     tvAmount.setHint(R.string.zero_amount);
 231                 else
 232                     tvAmount.setHint(hint);
 233             }
 234             finally {
 235                 syncingData = false;
 236             }
 237         };
 238         editableObserver = this::setEditable;
 239         focusedAccountObserver = index -> {
 240             if ((index != null) && index.equals(getAdapterPosition())) {
 241                 switch (item.getType()) {
 242                     case generalData:
 243                         // bad idea - double pop-up, and not really necessary.
 244                         // the user can tap the input to get the calendar
 245                         //if (!tvDate.hasFocus()) tvDate.requestFocus();
 246                         boolean focused = tvDescription.requestFocus();
 247                         tvDescription.dismissDropDown();
 248                         if (focused)
 249                             Misc.showSoftKeyboard(
 250                                     (NewTransactionActivity) tvDescription.getContext());
 251                         break;
 252                     case transactionRow:
 253                         // do nothing if a row element already has the focus
 254                         if (!itemView.hasFocus()) {
 255                             switch (item.getFocusedElement()) {
 256                                 case Amount:
 257                                     tvAmount.requestFocus();
 258                                     break;
 259                                 case Comment:
 260                                     tvComment.requestFocus();
 261                                     break;
 262                                 case Account:
 263                                     focused = tvAccount.requestFocus();
 264                                     tvAccount.dismissDropDown();
 265                                     if (focused)
 266                                         Misc.showSoftKeyboard(
 267                                                 (NewTransactionActivity) tvAccount.getContext());
 268                                     break;
 269                             }
 270                         }
 271
 272                         break;
 273                 }
 274             }
 275         };
 276         accountCountObserver = count -> {
 277             final int adapterPosition = getAdapterPosition();
 278             final int layoutPosition = getLayoutPosition();
 279             Logger.debug("holder",
 280                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 281                             adapterPosition, layoutPosition, item.getType()
 282                                                                  .toString()
 283                                                                  .concat(item.getType() ==
 284                                                                          ItemType.transactionRow
 285                                                                          ? String.format(Locale.US,
 286                                                                          "'%s'=%s",
 287                                                                          item.getAccount()
 288                                                                              .getAccountName(),
 289                                                                          item.getAccount()
 290                                                                              .isAmountSet()
 291                                                                          ? String.format(Locale.US,
 292                                                                                  "%.2f",
 293                                                                                  item.getAccount()
 294                                                                                      .getAmount())
 295                                                                          : "unset") : "")));
 296             if (adapterPosition == count)
 297                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 298             else
 299                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 300         };
 301     }
 302     private void setEditable(Boolean editable) {
 303         tvDate.setEnabled(editable);
 304         tvDescription.setEnabled(editable);
 305         tvAccount.setEnabled(editable);
 306         tvAmount.setEnabled(editable);
 307     }
 308     private void beginUpdates() {
 309         if (inUpdate)
 310             throw new RuntimeException("Already in update mode");
 311         inUpdate = true;
 312     }
 313     private void endUpdates() {
 314         if (!inUpdate)
 315             throw new RuntimeException("Not in update mode");
 316         inUpdate = false;
 317     }
 318     /**
 319      * syncData()
 320      * <p>
 321      * Stores the data from the UI elements into the model item
 322      */
 323     private void syncData() {
 324         if (item == null)
 325             return;
 326
 327         if (syncingData) {
 328             Logger.debug("new-trans", "skipping syncData() loop");
 329             return;
 330         }
 331
 332         syncingData = true;
 333
 334         try {
 335             switch (item.getType()) {
 336                 case generalData:
 337                     item.setDate(String.valueOf(tvDate.getText()));
 338                     item.setDescription(String.valueOf(tvDescription.getText()));
 339                     break;
 340                 case transactionRow:
 341                     final LedgerTransactionAccount account = item.getAccount();
 342                     account.setAccountName(String.valueOf(tvAccount.getText()));
 343
 344                     account.setComment(String.valueOf(tvComment.getText()));
 345
 346                     // TODO: handle multiple amounts
 347                     String amount = String.valueOf(tvAmount.getText());
 348                     amount = amount.trim();
 349
 350                     if (amount.isEmpty()) {
 351                         account.resetAmount();
 352                     }
 353                     else {
 354                         try {
 355                             amount = amount.replace(decimalSeparator, decimalDot);
 356                             account.setAmount(Float.parseFloat(amount));
 357                         }
 358                         catch (NumberFormatException e) {
 359                             Logger.debug("new-trans", String.format(
 360                                     "assuming amount is not set due to number format exception. " +
 361                                     "input was '%s'", amount));
 362                             account.resetAmount();
 363                         }
 364                     }
 365
 366                     break;
 367                 case bottomFiller:
 368                     throw new RuntimeException("Should not happen");
 369             }
 370         }
 371         finally {
 372             syncingData = false;
 373         }
 374     }
 375     private void pickTransactionDate() {
 376         DatePickerFragment picker = new DatePickerFragment();
 377         picker.setFutureDates(mProfile.getFutureDates());
 378         picker.setOnDatePickedListener(this);
 379         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 380                 "datePicker");
 381     }
 382     /**
 383      * setData
 384      *
 385      * @param item updates the UI elements with the data from the model item
 386      */
 387     @SuppressLint("DefaultLocale")
 388     public void setData(NewTransactionModel.Item item) {
 389         beginUpdates();
 390         try {
 391             if (this.item != null && !this.item.equals(item)) {
 392                 this.item.stopObservingDate(dateObserver);
 393                 this.item.stopObservingDescription(descriptionObserver);
 394                 this.item.stopObservingAmountHint(hintObserver);
 395                 this.item.stopObservingEditableFlag(editableObserver);
 396                 this.item.getModel()
 397                          .stopObservingFocusedItem(focusedAccountObserver);
 398                 this.item.getModel()
 399                          .stopObservingAccountCount(accountCountObserver);
 400
 401                 this.item = null;
 402             }
 403
 404             switch (item.getType()) {
 405                 case generalData:
 406                     tvDate.setText(item.getFormattedDate());
 407                     tvDescription.setText(item.getDescription());
 408                     lHead.setVisibility(View.VISIBLE);
 409                     lAccount.setVisibility(View.GONE);
 410                     lPadding.setVisibility(View.GONE);
 411                     setEditable(true);
 412                     break;
 413                 case transactionRow:
 414                     LedgerTransactionAccount acc = item.getAccount();
 415                     tvAccount.setText(acc.getAccountName());
 416                     tvComment.setText(acc.getComment());
 417                     if (acc.isAmountSet()) {
 418                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 419                     }
 420                     else {
 421                         tvAmount.setText("");
 422 //                        tvAmount.setHint(R.string.zero_amount);
 423                     }
 424                     tvAmount.setHint(item.getAmountHint());
 425                     lHead.setVisibility(View.GONE);
 426                     lAccount.setVisibility(View.VISIBLE);
 427                     lPadding.setVisibility(View.GONE);
 428                     setEditable(true);
 429                     break;
 430                 case bottomFiller:
 431                     lHead.setVisibility(View.GONE);
 432                     lAccount.setVisibility(View.GONE);
 433                     lPadding.setVisibility(View.VISIBLE);
 434                     setEditable(false);
 435                     break;
 436             }
 437
 438             if (this.item == null) { // was null or has changed
 439                 this.item = item;
 440                 final NewTransactionActivity activity =
 441                         (NewTransactionActivity) tvDescription.getContext();
 442                 item.observeDate(activity, dateObserver);
 443                 item.observeDescription(activity, descriptionObserver);
 444                 item.observeAmountHint(activity, hintObserver);
 445                 item.observeEditableFlag(activity, editableObserver);
 446                 item.getModel()
 447                     .observeFocusedItem(activity, focusedAccountObserver);
 448                 item.getModel()
 449                     .observeAccountCount(activity, accountCountObserver);
 450             }
 451         }
 452         finally {
 453             endUpdates();
 454         }
 455     }
 456     @Override
 457     public void onDatePicked(int year, int month, int day) {
 458         final Calendar c = GregorianCalendar.getInstance();
 459         c.set(year, month, day);
 460         item.setDate(c.getTime());
 461         boolean focused = tvDescription.requestFocus();
 462         if (focused)
 463             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 464
 465     }
 466     @Override
 467     public void descriptionSelected(String description) {
 468         tvAccount.setText(description);
 469         tvAmount.requestFocus(View.FOCUS_FORWARD);
 470     }
 471 }