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

   1 /*
   2  * Copyright © 2021 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.new_transaction;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextUtils;
  24 import android.text.TextWatcher;
  25 import android.view.Gravity;
  26 import android.view.View;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.EditText;
  29 import android.widget.TextView;
  30
  31 import androidx.annotation.ColorInt;
  32 import androidx.annotation.NonNull;
  33 import androidx.constraintlayout.widget.ConstraintLayout;
  34 import androidx.recyclerview.widget.RecyclerView;
  35
  36 import net.ktnx.mobileledger.R;
  37 import net.ktnx.mobileledger.databinding.NewTransactionAccountRowBinding;
  38 import net.ktnx.mobileledger.db.AccountWithAmountsAutocompleteAdapter;
  39 import net.ktnx.mobileledger.model.Currency;
  40 import net.ktnx.mobileledger.model.Data;
  41 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  42 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  43 import net.ktnx.mobileledger.utils.DimensionUtils;
  44 import net.ktnx.mobileledger.utils.Logger;
  45 import net.ktnx.mobileledger.utils.Misc;
  46
  47 import java.text.DecimalFormatSymbols;
  48
  49 class NewTransactionAccountRowItemHolder extends NewTransactionItemViewHolder {
  50     private final String decimalDot = ".";
  51     private final NewTransactionAccountRowBinding b;
  52     private boolean ignoreFocusChanges = false;
  53     private String decimalSeparator;
  54     private boolean inUpdate = false;
  55     private boolean syncingData = false;
  56     NewTransactionAccountRowItemHolder(@NonNull NewTransactionAccountRowBinding b,
  57                                        NewTransactionItemsAdapter adapter) {
  58         super(b.getRoot());
  59         this.b = b;
  60         new TextViewClearHelper().attachToTextView(b.comment);
  61
  62         b.accountRowAccName.setNextFocusForwardId(View.NO_ID);
  63         b.accountRowAccAmounts.setNextFocusForwardId(View.NO_ID); // magic!
  64
  65         b.accountCommentButton.setOnClickListener(v -> {
  66             b.comment.setVisibility(View.VISIBLE);
  67             b.comment.requestFocus();
  68         });
  69
  70         @SuppressLint("DefaultLocale") View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
  71             final int id = v.getId();
  72             if (hasFocus) {
  73                 boolean wasSyncing = syncingData;
  74                 syncingData = true;
  75                 try {
  76                     final int pos = getBindingAdapterPosition();
  77                     if (id == R.id.account_row_acc_name) {
  78                         adapter.noteFocusIsOnAccount(pos);
  79                     }
  80                     else if (id == R.id.account_row_acc_amounts) {
  81                         adapter.noteFocusIsOnAmount(pos);
  82                     }
  83                     else if (id == R.id.comment) {
  84                         adapter.noteFocusIsOnComment(pos);
  85                     }
  86                     else
  87                         throw new IllegalStateException("Where is the focus? " + id);
  88                 }
  89                 finally {
  90                     syncingData = wasSyncing;
  91                 }
  92             }
  93             else {  // lost focus
  94                 if (id == R.id.account_row_acc_amounts) {
  95                     try {
  96                         String input = String.valueOf(b.accountRowAccAmounts.getText());
  97                         input = input.replace(decimalSeparator, decimalDot);
  98                         final String newText = String.format("%4.2f", Float.parseFloat(input));
  99                         if (!newText.equals(input)) {
 100                             boolean wasSyncingData = syncingData;
 101                             syncingData = true;
 102                             try {
 103                                 b.accountRowAccAmounts.setText(newText);
 104                             }
 105                             finally {
 106                                 syncingData = wasSyncingData;
 107                             }
 108                         }
 109                     }
 110                     catch (NumberFormatException ex) {
 111                         // ignored
 112                     }
 113                 }
 114             }
 115
 116             if (id == R.id.comment) {
 117                 commentFocusChanged(b.comment, hasFocus);
 118             }
 119         };
 120
 121         b.accountRowAccName.setOnFocusChangeListener(focusMonitor);
 122         b.accountRowAccAmounts.setOnFocusChangeListener(focusMonitor);
 123         b.comment.setOnFocusChangeListener(focusMonitor);
 124
 125         NewTransactionActivity activity = (NewTransactionActivity) b.getRoot()
 126                                                                     .getContext();
 127
 128         b.accountRowAccName.setAdapter(new AccountWithAmountsAutocompleteAdapter(b.getRoot()
 129                                                                                   .getContext(),
 130                 mProfile));
 131
 132         decimalSeparator = "";
 133         Data.locale.observe(activity, locale -> decimalSeparator = String.valueOf(
 134                 DecimalFormatSymbols.getInstance(locale)
 135                                     .getMonetaryDecimalSeparator()));
 136
 137         final TextWatcher tw = new TextWatcher() {
 138             @Override
 139             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 140             }
 141
 142             @Override
 143             public void onTextChanged(CharSequence s, int start, int before, int count) {
 144             }
 145
 146             @Override
 147             public void afterTextChanged(Editable s) {
 148 //                debug("input", "text changed");
 149                 if (inUpdate)
 150                     return;
 151
 152                 Logger.debug("textWatcher", "calling syncData()");
 153                 if (syncData()) {
 154                     Logger.debug("textWatcher",
 155                             "syncData() returned, checking if transaction is submittable");
 156                     adapter.model.checkTransactionSubmittable(null);
 157                 }
 158                 Logger.debug("textWatcher", "done");
 159             }
 160         };
 161         final TextWatcher amountWatcher = new TextWatcher() {
 162             @Override
 163             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 164             @Override
 165             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 166             @Override
 167             public void afterTextChanged(Editable s) {
 168                 checkAmountValid(s.toString());
 169
 170                 if (syncData())
 171                     adapter.model.checkTransactionSubmittable(null);
 172             }
 173         };
 174         b.accountRowAccName.addTextChangedListener(tw);
 175         monitorComment(b.comment);
 176         b.accountRowAccAmounts.addTextChangedListener(amountWatcher);
 177
 178         b.currencyButton.setOnClickListener(v -> {
 179             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 180             cpf.showPositionAndPadding();
 181             cpf.setOnCurrencySelectedListener(
 182                     c -> adapter.setItemCurrency(getBindingAdapterPosition(), c));
 183             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 184         });
 185
 186         commentFocusChanged(b.comment, false);
 187
 188         adapter.model.getFocusInfo()
 189                      .observe(activity, this::applyFocus);
 190
 191         Data.currencyGap.observe(activity,
 192                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 193                         hasGap));
 194
 195         Data.currencySymbolPosition.observe(activity,
 196                 position -> updateCurrencyPositionAndPadding(position,
 197                         Data.currencyGap.getValue()));
 198
 199         adapter.model.getShowCurrency()
 200                      .observe(activity, showCurrency -> {
 201                          if (showCurrency) {
 202                              b.currency.setVisibility(View.VISIBLE);
 203                              b.currencyButton.setVisibility(View.VISIBLE);
 204                              setCurrencyString(mProfile.getDefaultCommodity());
 205                          }
 206                          else {
 207                              b.currency.setVisibility(View.GONE);
 208                              b.currencyButton.setVisibility(View.GONE);
 209                              setCurrencyString(null);
 210                          }
 211                      });
 212
 213         adapter.model.getShowComments()
 214                      .observe(activity, show -> b.commentLayout.setVisibility(
 215                              show ? View.VISIBLE : View.GONE));
 216     }
 217     private void applyFocus(NewTransactionModel.FocusInfo focusInfo) {
 218         if (ignoreFocusChanges) {
 219             Logger.debug("new-trans", "Ignoring focus change");
 220             return;
 221         }
 222         ignoreFocusChanges = true;
 223         try {
 224             if (((focusInfo == null) || (focusInfo.element == null) ||
 225                  focusInfo.position != getBindingAdapterPosition()))
 226                 return;
 227
 228             final NewTransactionModel.Item item = getItem();
 229             if (item == null)
 230                 return;
 231
 232             NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 233             switch (focusInfo.element) {
 234                 case Amount:
 235                     b.accountRowAccAmounts.requestFocus();
 236                     break;
 237                 case Comment:
 238                     b.comment.setVisibility(View.VISIBLE);
 239                     b.comment.requestFocus();
 240                     break;
 241                 case Account:
 242                     boolean focused = b.accountRowAccName.requestFocus();
 243 //                                         b.accountRowAccName.dismissDropDown();
 244                     if (focused)
 245                         Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 246                                                                         .getContext());
 247                     break;
 248             }
 249         }
 250         finally {
 251             ignoreFocusChanges = false;
 252         }
 253     }
 254     public void checkAmountValid(String s) {
 255         boolean valid = true;
 256         try {
 257             if (s.length() > 0) {
 258                 float ignored = Float.parseFloat(s.replace(decimalSeparator, decimalDot));
 259             }
 260         }
 261         catch (NumberFormatException ex) {
 262             valid = false;
 263         }
 264
 265         displayAmountValidity(valid);
 266     }
 267     private void displayAmountValidity(boolean valid) {
 268         b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 269                 valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 270         b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 271     }
 272     private void monitorComment(EditText editText) {
 273         editText.addTextChangedListener(new TextWatcher() {
 274             @Override
 275             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 276             }
 277             @Override
 278             public void onTextChanged(CharSequence s, int start, int before, int count) {
 279             }
 280             @Override
 281             public void afterTextChanged(Editable s) {
 282 //                debug("input", "text changed");
 283                 if (inUpdate)
 284                     return;
 285
 286                 Logger.debug("textWatcher", "calling syncData()");
 287                 syncData();
 288                 Logger.debug("textWatcher",
 289                         "syncData() returned, checking if transaction is submittable");
 290                 styleComment(editText, s.toString());
 291                 Logger.debug("textWatcher", "done");
 292             }
 293         });
 294     }
 295     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 296         @ColorInt int textColor;
 297         textColor = b.dummyText.getTextColors()
 298                                .getDefaultColor();
 299         if (hasFocus) {
 300             textView.setTypeface(null, Typeface.NORMAL);
 301             textView.setHint(R.string.transaction_account_comment_hint);
 302         }
 303         else {
 304             int alpha = (textColor >> 24 & 0xff);
 305             alpha = 3 * alpha / 4;
 306             textColor = (alpha << 24) | (0x00ffffff & textColor);
 307             textView.setTypeface(null, Typeface.ITALIC);
 308             textView.setHint("");
 309             if (TextUtils.isEmpty(textView.getText())) {
 310                 textView.setVisibility(View.INVISIBLE);
 311             }
 312         }
 313         textView.setTextColor(textColor);
 314
 315     }
 316     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 317         ConstraintLayout.LayoutParams amountLP =
 318                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 319         ConstraintLayout.LayoutParams currencyLP =
 320                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 321
 322         if (position == Currency.Position.before) {
 323             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 324             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 325
 326             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 327             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 328             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 329             amountLP.startToEnd = b.currency.getId();
 330
 331             b.currency.setGravity(Gravity.END);
 332         }
 333         else {
 334             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 335             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 336
 337             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 338             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 339             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 340             amountLP.endToStart = b.currency.getId();
 341
 342             b.currency.setGravity(Gravity.START);
 343         }
 344
 345         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 346         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 347
 348         b.accountRowAccAmounts.setLayoutParams(amountLP);
 349         b.currency.setLayoutParams(currencyLP);
 350
 351         // distance between the amount and the currency symbol
 352         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 353
 354         if (position == Currency.Position.before) {
 355             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 356         }
 357         else {
 358             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 359         }
 360     }
 361     private void setCurrencyString(String currency) {
 362         @ColorInt int textColor = b.dummyText.getTextColors()
 363                                              .getDefaultColor();
 364         if (TextUtils.isEmpty(currency)) {
 365             b.currency.setText(R.string.currency_symbol);
 366             int alpha = (textColor >> 24) & 0xff;
 367             alpha = alpha * 3 / 4;
 368             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 369         }
 370         else {
 371             b.currency.setText(currency);
 372             b.currency.setTextColor(textColor);
 373         }
 374     }
 375     private void setCurrency(Currency currency) {
 376         setCurrencyString((currency == null) ? null : currency.getName());
 377     }
 378     private void setEditable(Boolean editable) {
 379         b.accountRowAccName.setEnabled(editable);
 380         b.accountRowAccAmounts.setEnabled(editable);
 381     }
 382     private void beginUpdates() {
 383         if (inUpdate)
 384             throw new RuntimeException("Already in update mode");
 385         inUpdate = true;
 386     }
 387     private void endUpdates() {
 388         if (!inUpdate)
 389             throw new RuntimeException("Not in update mode");
 390         inUpdate = false;
 391     }
 392     /**
 393      * syncData()
 394      * <p>
 395      * Stores the data from the UI elements into the model item
 396      * Returns true if there were changes made that suggest transaction has to be
 397      * checked for being submittable
 398      */
 399     private boolean syncData() {
 400         if (syncingData) {
 401             Logger.debug("new-trans", "skipping syncData() loop");
 402             return false;
 403         }
 404
 405         if (getBindingAdapterPosition() == RecyclerView.NO_POSITION) {
 406             // probably the row was swiped out
 407             Logger.debug("new-trans", "Ignoring request to syncData(): adapter position negative");
 408             return false;
 409         }
 410
 411         final NewTransactionModel.Item item = getItem();
 412         if (item == null)
 413             return false;
 414
 415         syncingData = true;
 416
 417         boolean significantChange = false;
 418
 419         try {
 420             NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 421
 422             // having account name is important
 423             final Editable incomingAccountName = b.accountRowAccName.getText();
 424             if (TextUtils.isEmpty(acc.getAccountName()) != TextUtils.isEmpty(incomingAccountName))
 425                 significantChange = true;
 426
 427             acc.setAccountName(String.valueOf(incomingAccountName));
 428             final int accNameSelEnd = b.accountRowAccName.getSelectionEnd();
 429             final int accNameSelStart = b.accountRowAccName.getSelectionStart();
 430             acc.setAccountNameCursorPosition(accNameSelEnd);
 431
 432             acc.setComment(String.valueOf(b.comment.getText()));
 433
 434             String amount = String.valueOf(b.accountRowAccAmounts.getText());
 435             amount = amount.trim();
 436
 437             if (amount.isEmpty()) {
 438                 if (acc.isAmountSet())
 439                     significantChange = true;
 440                 acc.resetAmount();
 441                 acc.setAmountValid(true);
 442             }
 443             else {
 444                 try {
 445                     amount = amount.replace(decimalSeparator, decimalDot);
 446                     final float parsedAmount = Float.parseFloat(amount);
 447                     if (!acc.isAmountSet() || !Misc.equalFloats(parsedAmount, acc.getAmount()))
 448                         significantChange = true;
 449                     acc.setAmount(parsedAmount);
 450                     acc.setAmountValid(true);
 451                 }
 452                 catch (NumberFormatException e) {
 453                     Logger.debug("new-trans", String.format(
 454                             "assuming amount is not set due to number format exception. " +
 455                             "input was '%s'", amount));
 456                     if (acc.isAmountValid())
 457                         significantChange = true;
 458                     acc.resetAmount();
 459                     acc.setAmountValid(false);
 460                 }
 461                 final String curr = String.valueOf(b.currency.getText());
 462                 final String currValue;
 463                 if (curr.equals(b.currency.getContext()
 464                                           .getResources()
 465                                           .getString(R.string.currency_symbol)) || curr.isEmpty())
 466                     currValue = null;
 467                 else
 468                     currValue = curr;
 469
 470                 if (!significantChange && !Misc.equalStrings(acc.getCurrency(), currValue))
 471                     significantChange = true;
 472                 acc.setCurrency(currValue);
 473             }
 474
 475             return significantChange;
 476         }
 477         finally {
 478             syncingData = false;
 479         }
 480     }
 481     /**
 482      * bind
 483      *
 484      * @param item updates the UI elements with the data from the model item
 485      */
 486     @SuppressLint("DefaultLocale")
 487     public void bind(@NonNull NewTransactionModel.Item item) {
 488         beginUpdates();
 489         try {
 490             syncingData = true;
 491             try {
 492                 NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 493
 494                 final String incomingAccountName = acc.getAccountName();
 495                 final String presentAccountName = String.valueOf(b.accountRowAccName.getText());
 496                 if (!Misc.equalStrings(incomingAccountName, presentAccountName)) {
 497                     Logger.debug("bind",
 498                             String.format("Setting account name from '%s' to '%s' (| @ %d)",
 499                                     presentAccountName, incomingAccountName,
 500                                     acc.getAccountNameCursorPosition()));
 501                     // avoid triggering completion pop-up
 502                     AccountWithAmountsAutocompleteAdapter a =
 503                             (AccountWithAmountsAutocompleteAdapter) b.accountRowAccName.getAdapter();
 504                     try {
 505                         b.accountRowAccName.setAdapter(null);
 506                         b.accountRowAccName.setText(incomingAccountName);
 507                         b.accountRowAccName.setSelection(acc.getAccountNameCursorPosition());
 508                     }
 509                     finally {
 510                         b.accountRowAccName.setAdapter(a);
 511                     }
 512                 }
 513
 514                 final String amountHint = acc.getAmountHint();
 515                 if (amountHint == null) {
 516                     b.accountRowAccAmounts.setHint(R.string.zero_amount);
 517                 }
 518                 else {
 519                     b.accountRowAccAmounts.setHint(amountHint);
 520                 }
 521
 522                 b.accountRowAccAmounts.setImeOptions(
 523                         acc.isLast() ? EditorInfo.IME_ACTION_DONE : EditorInfo.IME_ACTION_NEXT);
 524
 525                 setCurrencyString(acc.getCurrency());
 526                 b.accountRowAccAmounts.setText(
 527                         acc.isAmountSet() ? String.format("%4.2f", acc.getAmount()) : null);
 528                 displayAmountValidity(true);
 529
 530                 final String comment = acc.getComment();
 531                 b.comment.setText(comment);
 532                 styleComment(b.comment, comment);
 533
 534                 setEditable(true);
 535
 536                 NewTransactionItemsAdapter adapter =
 537                         (NewTransactionItemsAdapter) getBindingAdapter();
 538                 if (adapter != null)
 539                     applyFocus(adapter.model.getFocusInfo()
 540                                             .getValue());
 541             }
 542             finally {
 543                 syncingData = false;
 544             }
 545         }
 546         finally {
 547             endUpdates();
 548         }
 549     }
 550     private void styleComment(EditText editText, String comment) {
 551         final View focusedView = editText.findFocus();
 552         editText.setTypeface(null, (focusedView == editText) ? Typeface.NORMAL : Typeface.ITALIC);
 553         editText.setVisibility(
 554                 ((focusedView != editText) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 555                                                                           : View.VISIBLE);
 556     }
 557 }