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.inputmethod.EditorInfo;
  27 import android.widget.AutoCompleteTextView;
  28 import android.widget.FrameLayout;
  29 import android.widget.LinearLayout;
  30 import android.widget.TextView;
  31
  32 import androidx.annotation.NonNull;
  33 import androidx.lifecycle.Observer;
  34 import androidx.recyclerview.widget.RecyclerView;
  35
  36 import net.ktnx.mobileledger.R;
  37 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  38 import net.ktnx.mobileledger.model.Data;
  39 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  40 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  41 import net.ktnx.mobileledger.ui.AutoCompleteTextViewWithClear;
  42 import net.ktnx.mobileledger.ui.DatePickerFragment;
  43 import net.ktnx.mobileledger.utils.Logger;
  44 import net.ktnx.mobileledger.utils.MLDB;
  45 import net.ktnx.mobileledger.utils.Misc;
  46
  47 import java.text.DecimalFormatSymbols;
  48 import java.util.Calendar;
  49 import java.util.Date;
  50 import java.util.GregorianCalendar;
  51 import java.util.Locale;
  52
  53 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  54         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  55     private final String decimalSeparator;
  56     private final String decimalDot;
  57     private NewTransactionModel.Item item;
  58     private TextView tvDate;
  59     private AutoCompleteTextView tvDescription;
  60     private AutoCompleteTextView tvAccount;
  61     private TextView tvAmount;
  62     private LinearLayout lHead;
  63     private LinearLayout lAccount;
  64     private FrameLayout lPadding;
  65     private MobileLedgerProfile mProfile;
  66     private Date date;
  67     private Observer<Date> dateObserver;
  68     private Observer<String> descriptionObserver;
  69     private Observer<String> hintObserver;
  70     private Observer<Integer> focusedAccountObserver;
  71     private Observer<Integer> accountCountObserver;
  72     private Observer<Boolean> editableObserver;
  73     private boolean inUpdate = false;
  74     private boolean syncingData = false;
  75     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
  76         super(itemView);
  77         tvAccount = itemView.findViewById(R.id.account_row_acc_name);
  78         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
  79         tvDate = itemView.findViewById(R.id.new_transaction_date);
  80         tvDescription = itemView.findViewById(R.id.new_transaction_description);
  81         lHead = itemView.findViewById(R.id.ntr_data);
  82         lAccount = itemView.findViewById(R.id.ntr_account);
  83         lPadding = itemView.findViewById(R.id.ntr_padding);
  84
  85         tvDescription.setNextFocusForwardId(View.NO_ID);
  86         tvAccount.setNextFocusForwardId(View.NO_ID);
  87         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
  88
  89         tvDate.setOnClickListener(v -> pickTransactionDate());
  90
  91         mProfile = Data.profile.getValue();
  92         if (mProfile == null)
  93             throw new AssertionError();
  94
  95         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
  96             if (hasFocus) {
  97                 boolean wasSyncing = syncingData;
  98                 syncingData = true;
  99                 try {
 100                     final int pos = getAdapterPosition();
 101                     adapter.updateFocusedItem(pos);
 102                     if (v instanceof AutoCompleteTextViewWithClear) {
 103                         adapter.noteFocusIsOnAccount(pos);
 104                     }
 105                     else {
 106                         adapter.noteFocusIsOnAmount(pos);
 107                     }
 108                 }
 109                 finally {
 110                     syncingData = wasSyncing;
 111                 }
 112             }
 113         };
 114
 115         tvDescription.setOnFocusChangeListener(focusMonitor);
 116         tvAccount.setOnFocusChangeListener(focusMonitor);
 117         tvAmount.setOnFocusChangeListener(focusMonitor);
 118
 119         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 120                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 121         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 122                 "name", true, this, mProfile);
 123
 124         // FIXME: react on configuration (locale) changes
 125         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 126                                                               .getMonetaryDecimalSeparator());
 127         decimalDot = ".";
 128
 129         final TextWatcher tw = new TextWatcher() {
 130             @Override
 131             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 132             }
 133
 134             @Override
 135             public void onTextChanged(CharSequence s, int start, int before, int count) {
 136             }
 137
 138             @Override
 139             public void afterTextChanged(Editable s) {
 140 //                debug("input", "text changed");
 141                 if (inUpdate)
 142                     return;
 143
 144                 Logger.debug("textWatcher", "calling syncData()");
 145                 syncData();
 146                 Logger.debug("textWatcher",
 147                         "syncData() returned, checking if transaction is submittable");
 148                 adapter.model.checkTransactionSubmittable(adapter);
 149                 Logger.debug("textWatcher", "done");
 150             }
 151         };
 152         final TextWatcher amountWatcher = new TextWatcher() {
 153             @Override
 154             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 155             }
 156             @Override
 157             public void onTextChanged(CharSequence s, int start, int before, int count) {
 158
 159             }
 160             @Override
 161             public void afterTextChanged(Editable s) {
 162                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 163                     // only one decimal separator is allowed
 164                     // plus and minus are allowed only at the beginning
 165                     String val = s.toString();
 166                     if (val.isEmpty())
 167                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 168                                 "0123456789+-" + decimalSeparator + decimalDot));
 169                     else if (val.contains(decimalSeparator) || val.contains(decimalDot))
 170                         tvAmount.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
 171                     else
 172                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 173                                 "0123456789" + decimalSeparator + decimalDot));
 174
 175                     syncData();
 176                     adapter.model.checkTransactionSubmittable(adapter);
 177                 }
 178             }
 179         };
 180         tvDescription.addTextChangedListener(tw);
 181         tvAccount.addTextChangedListener(tw);
 182         tvAmount.addTextChangedListener(amountWatcher);
 183
 184         // FIXME: react on locale changes
 185         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 186             tvAmount.setKeyListener(DigitsKeyListener.getInstance(Locale.getDefault(), true, true));
 187         else
 188             tvAmount.setKeyListener(
 189                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 190
 191         dateObserver = date -> {
 192             if (syncingData)
 193                 return;
 194             syncingData = true;
 195             try {
 196                 tvDate.setText(item.getFormattedDate());
 197             }
 198             finally {
 199                 syncingData = false;
 200             }
 201         };
 202         descriptionObserver = description -> {
 203             if (syncingData)
 204                 return;
 205             syncingData = true;
 206             try {
 207                 tvDescription.setText(description);
 208             }
 209             finally {
 210                 syncingData = false;
 211             }
 212         };
 213         hintObserver = hint -> {
 214             if (syncingData)
 215                 return;
 216             syncingData = true;
 217             try {
 218                 if (hint == null)
 219                     tvAmount.setHint(R.string.zero_amount);
 220                 else
 221                     tvAmount.setHint(hint);
 222             }
 223             finally {
 224                 syncingData = false;
 225             }
 226         };
 227         editableObserver = this::setEditable;
 228         focusedAccountObserver = index -> {
 229             if ((index != null) && index.equals(getAdapterPosition())) {
 230                 switch (item.getType()) {
 231                     case generalData:
 232                         // bad idea - double pop-up, and not really necessary.
 233                         // the user can tap the input to get the calendar
 234                         //if (!tvDate.hasFocus()) tvDate.requestFocus();
 235                         boolean focused = tvDescription.requestFocus();
 236                         tvDescription.dismissDropDown();
 237                         if (focused)
 238                             Misc.showSoftKeyboard(
 239                                     (NewTransactionActivity) tvDescription.getContext());
 240                         break;
 241                     case transactionRow:
 242                         // do nothing if a row element already has the focus
 243                         if (!itemView.hasFocus()) {
 244                             if (item.focusIsOnAmount()) {
 245                                 tvAmount.requestFocus();
 246                             }
 247                             else {
 248                                 focused = tvAccount.requestFocus();
 249                                 tvAccount.dismissDropDown();
 250                                 if (focused)
 251                                     Misc.showSoftKeyboard(
 252                                             (NewTransactionActivity) tvAccount.getContext());
 253                             }
 254                         }
 255
 256                         break;
 257                 }
 258             }
 259         };
 260         accountCountObserver = count -> {
 261             final int adapterPosition = getAdapterPosition();
 262             final int layoutPosition = getLayoutPosition();
 263             Logger.debug("holder",
 264                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 265                             adapterPosition, layoutPosition, item.getType()
 266                                                                  .toString()
 267                                                                  .concat(item.getType() ==
 268                                                                          NewTransactionModel.ItemType.transactionRow
 269                                                                          ? String.format(Locale.US,
 270                                                                          "'%s'=%s",
 271                                                                          item.getAccount()
 272                                                                              .getAccountName(),
 273                                                                          item.getAccount()
 274                                                                              .isAmountSet()
 275                                                                          ? String.format(Locale.US,
 276                                                                                  "%.2f",
 277                                                                                  item.getAccount()
 278                                                                                      .getAmount())
 279                                                                          : "unset") : "")));
 280             if (adapterPosition == count)
 281                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 282             else
 283                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 284         };
 285     }
 286     private void setEditable(Boolean editable) {
 287         tvDate.setEnabled(editable);
 288         tvDescription.setEnabled(editable);
 289         tvAccount.setEnabled(editable);
 290         tvAmount.setEnabled(editable);
 291     }
 292     private void beginUpdates() {
 293         if (inUpdate)
 294             throw new RuntimeException("Already in update mode");
 295         inUpdate = true;
 296     }
 297     private void endUpdates() {
 298         if (!inUpdate)
 299             throw new RuntimeException("Not in update mode");
 300         inUpdate = false;
 301     }
 302     /**
 303      * syncData()
 304      * <p>
 305      * Stores the data from the UI elements into the model item
 306      */
 307     private void syncData() {
 308         if (item == null)
 309             return;
 310
 311         if (syncingData) {
 312             Logger.debug("new-trans", "skipping syncData() loop");
 313             return;
 314         }
 315
 316         syncingData = true;
 317
 318         try {
 319             switch (item.getType()) {
 320                 case generalData:
 321                     item.setDate(String.valueOf(tvDate.getText()));
 322                     item.setDescription(String.valueOf(tvDescription.getText()));
 323                     break;
 324                 case transactionRow:
 325                     item.getAccount()
 326                         .setAccountName(String.valueOf(tvAccount.getText()));
 327
 328                     // TODO: handle multiple amounts
 329                     String amount = String.valueOf(tvAmount.getText());
 330                     amount = amount.trim();
 331
 332                     if (amount.isEmpty()) {
 333                         item.getAccount()
 334                             .resetAmount();
 335                     }
 336                     else {
 337                         try {
 338                             amount = amount.replace(decimalSeparator, decimalDot);
 339                             item.getAccount()
 340                                 .setAmount(Float.parseFloat(amount));
 341                         }
 342                         catch (NumberFormatException e) {
 343                             Logger.debug("new-trans", String.format(
 344                                     "assuming amount is not set due to number format exception. " +
 345                                     "input was '%s'", amount));
 346                             item.getAccount()
 347                                 .resetAmount();
 348                         }
 349                     }
 350
 351                     break;
 352                 case bottomFiller:
 353                     throw new RuntimeException("Should not happen");
 354             }
 355         }
 356         finally {
 357             syncingData = false;
 358         }
 359     }
 360     private void pickTransactionDate() {
 361         DatePickerFragment picker = new DatePickerFragment();
 362         picker.setFutureDates(mProfile.getFutureDates());
 363         picker.setOnDatePickedListener(this);
 364         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 365                 "datePicker");
 366     }
 367     /**
 368      * setData
 369      *
 370      * @param item updates the UI elements with the data from the model item
 371      */
 372     @SuppressLint("DefaultLocale")
 373     public void setData(NewTransactionModel.Item item) {
 374         beginUpdates();
 375         try {
 376             if (this.item != null && !this.item.equals(item)) {
 377                 this.item.stopObservingDate(dateObserver);
 378                 this.item.stopObservingDescription(descriptionObserver);
 379                 this.item.stopObservingAmountHint(hintObserver);
 380                 this.item.stopObservingEditableFlag(editableObserver);
 381                 this.item.getModel()
 382                          .stopObservingFocusedItem(focusedAccountObserver);
 383                 this.item.getModel()
 384                          .stopObservingAccountCount(accountCountObserver);
 385
 386                 this.item = null;
 387             }
 388
 389             switch (item.getType()) {
 390                 case generalData:
 391                     tvDate.setText(item.getFormattedDate());
 392                     tvDescription.setText(item.getDescription());
 393                     lHead.setVisibility(View.VISIBLE);
 394                     lAccount.setVisibility(View.GONE);
 395                     lPadding.setVisibility(View.GONE);
 396                     setEditable(true);
 397                     break;
 398                 case transactionRow:
 399                     LedgerTransactionAccount acc = item.getAccount();
 400                     tvAccount.setText(acc.getAccountName());
 401                     if (acc.isAmountSet()) {
 402                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 403                     }
 404                     else {
 405                         tvAmount.setText("");
 406 //                        tvAmount.setHint(R.string.zero_amount);
 407                     }
 408                     tvAmount.setHint(item.getAmountHint());
 409                     lHead.setVisibility(View.GONE);
 410                     lAccount.setVisibility(View.VISIBLE);
 411                     lPadding.setVisibility(View.GONE);
 412                     setEditable(true);
 413                     break;
 414                 case bottomFiller:
 415                     lHead.setVisibility(View.GONE);
 416                     lAccount.setVisibility(View.GONE);
 417                     lPadding.setVisibility(View.VISIBLE);
 418                     setEditable(false);
 419                     break;
 420             }
 421
 422             if (this.item == null) { // was null or has changed
 423                 this.item = item;
 424                 final NewTransactionActivity activity =
 425                         (NewTransactionActivity) tvDescription.getContext();
 426                 item.observeDate(activity, dateObserver);
 427                 item.observeDescription(activity, descriptionObserver);
 428                 item.observeAmountHint(activity, hintObserver);
 429                 item.observeEditableFlag(activity, editableObserver);
 430                 item.getModel()
 431                     .observeFocusedItem(activity, focusedAccountObserver);
 432                 item.getModel()
 433                     .observeAccountCount(activity, accountCountObserver);
 434             }
 435         }
 436         finally {
 437             endUpdates();
 438         }
 439     }
 440     @Override
 441     public void onDatePicked(int year, int month, int day) {
 442         final Calendar c = GregorianCalendar.getInstance();
 443         c.set(year, month, day);
 444         item.setDate(c.getTime());
 445         boolean focused = tvDescription.requestFocus();
 446         if (focused)
 447             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 448
 449     }
 450     @Override
 451     public void descriptionSelected(String description) {
 452         tvAccount.setText(description);
 453         tvAmount.requestFocus(View.FOCUS_FORWARD);
 454     }
 455 }