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
  35 import net.ktnx.mobileledger.R;
  36 import net.ktnx.mobileledger.databinding.NewTransactionAccountRowBinding;
  37 import net.ktnx.mobileledger.db.AccountAutocompleteAdapter;
  38 import net.ktnx.mobileledger.model.Currency;
  39 import net.ktnx.mobileledger.model.Data;
  40 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  41 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  42 import net.ktnx.mobileledger.utils.DimensionUtils;
  43 import net.ktnx.mobileledger.utils.Logger;
  44 import net.ktnx.mobileledger.utils.Misc;
  45
  46 import java.text.DecimalFormatSymbols;
  47
  48 class NewTransactionAccountRowItemHolder extends NewTransactionItemViewHolder {
  49     private final String decimalDot = ".";
  50     private final NewTransactionAccountRowBinding b;
  51     private boolean ignoreFocusChanges = false;
  52     private String decimalSeparator;
  53     private boolean inUpdate = false;
  54     private boolean syncingData = false;
  55     //TODO multiple amounts with different currencies per posting?
  56     NewTransactionAccountRowItemHolder(@NonNull NewTransactionAccountRowBinding b,
  57                                        NewTransactionItemsAdapter adapter) {
  58         super(b.getRoot(), adapter);
  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 = getAdapterPosition();
  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 AccountAutocompleteAdapter(b.getRoot()
 129                                                                        .getContext(), mProfile));
 130
 131         decimalSeparator = "";
 132         Data.locale.observe(activity, locale -> decimalSeparator = String.valueOf(
 133                 DecimalFormatSymbols.getInstance(locale)
 134                                     .getMonetaryDecimalSeparator()));
 135
 136         final TextWatcher tw = new TextWatcher() {
 137             @Override
 138             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 139             }
 140
 141             @Override
 142             public void onTextChanged(CharSequence s, int start, int before, int count) {
 143             }
 144
 145             @Override
 146             public void afterTextChanged(Editable s) {
 147 //                debug("input", "text changed");
 148                 if (inUpdate)
 149                     return;
 150
 151                 Logger.debug("textWatcher", "calling syncData()");
 152                 if (syncData()) {
 153                     Logger.debug("textWatcher",
 154                             "syncData() returned, checking if transaction is submittable");
 155                     adapter.model.checkTransactionSubmittable(null);
 156                 }
 157                 Logger.debug("textWatcher", "done");
 158             }
 159         };
 160         final TextWatcher amountWatcher = new TextWatcher() {
 161             @Override
 162             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 163             @Override
 164             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 165             @Override
 166             public void afterTextChanged(Editable s) {
 167                 checkAmountValid(s.toString());
 168
 169                 if (syncData())
 170                     adapter.model.checkTransactionSubmittable(null);
 171             }
 172         };
 173         b.accountRowAccName.addTextChangedListener(tw);
 174         monitorComment(b.comment);
 175         b.accountRowAccAmounts.addTextChangedListener(amountWatcher);
 176
 177         b.currencyButton.setOnClickListener(v -> {
 178             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 179             cpf.showPositionAndPadding();
 180             cpf.setOnCurrencySelectedListener(
 181                     c -> adapter.setItemCurrency(getAdapterPosition(), c));
 182             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 183         });
 184
 185         commentFocusChanged(b.comment, false);
 186
 187         adapter.model.getFocusInfo()
 188                      .observe(activity, this::applyFocus);
 189
 190         Data.currencyGap.observe(activity,
 191                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 192                         hasGap));
 193
 194         Data.currencySymbolPosition.observe(activity,
 195                 position -> updateCurrencyPositionAndPadding(position,
 196                         Data.currencyGap.getValue()));
 197
 198         adapter.model.getShowCurrency()
 199                      .observe(activity, showCurrency -> {
 200                          if (showCurrency) {
 201                              b.currency.setVisibility(View.VISIBLE);
 202                              b.currencyButton.setVisibility(View.VISIBLE);
 203                              setCurrencyString(mProfile.getDefaultCommodity());
 204                          }
 205                          else {
 206                              b.currency.setVisibility(View.GONE);
 207                              b.currencyButton.setVisibility(View.GONE);
 208                              setCurrencyString(null);
 209                          }
 210                      });
 211
 212         adapter.model.getShowComments()
 213                      .observe(activity, show -> b.commentLayout.setVisibility(
 214                              show ? View.VISIBLE : View.GONE));
 215     }
 216     private void applyFocus(NewTransactionModel.FocusInfo focusInfo) {
 217         if (ignoreFocusChanges) {
 218             Logger.debug("new-trans", "Ignoring focus change");
 219             return;
 220         }
 221         ignoreFocusChanges = true;
 222         try {
 223             if (((focusInfo == null) || (focusInfo.element == null) ||
 224                  focusInfo.position != getAdapterPosition()))
 225                 return;
 226
 227             NewTransactionModel.TransactionAccount acc = getItem().toTransactionAccount();
 228             switch (focusInfo.element) {
 229                 case Amount:
 230                     b.accountRowAccAmounts.requestFocus();
 231                     break;
 232                 case Comment:
 233                     b.comment.setVisibility(View.VISIBLE);
 234                     b.comment.requestFocus();
 235                     break;
 236                 case Account:
 237                     boolean focused = b.accountRowAccName.requestFocus();
 238 //                                         b.accountRowAccName.dismissDropDown();
 239                     if (focused)
 240                         Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 241                                                                         .getContext());
 242                     break;
 243             }
 244         }
 245         finally {
 246             ignoreFocusChanges = false;
 247         }
 248     }
 249     public void checkAmountValid(String s) {
 250         boolean valid = true;
 251         try {
 252             if (s.length() > 0) {
 253                 float ignored = Float.parseFloat(s.replace(decimalSeparator, decimalDot));
 254             }
 255         }
 256         catch (NumberFormatException ex) {
 257             valid = false;
 258         }
 259
 260         displayAmountValidity(valid);
 261     }
 262     private void displayAmountValidity(boolean valid) {
 263         b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 264                 valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 265         b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 266     }
 267     private void monitorComment(EditText editText) {
 268         editText.addTextChangedListener(new TextWatcher() {
 269             @Override
 270             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 271             }
 272             @Override
 273             public void onTextChanged(CharSequence s, int start, int before, int count) {
 274             }
 275             @Override
 276             public void afterTextChanged(Editable s) {
 277 //                debug("input", "text changed");
 278                 if (inUpdate)
 279                     return;
 280
 281                 Logger.debug("textWatcher", "calling syncData()");
 282                 syncData();
 283                 Logger.debug("textWatcher",
 284                         "syncData() returned, checking if transaction is submittable");
 285                 styleComment(editText, s.toString());
 286                 Logger.debug("textWatcher", "done");
 287             }
 288         });
 289     }
 290     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 291         @ColorInt int textColor;
 292         textColor = b.dummyText.getTextColors()
 293                                .getDefaultColor();
 294         if (hasFocus) {
 295             textView.setTypeface(null, Typeface.NORMAL);
 296             textView.setHint(R.string.transaction_account_comment_hint);
 297         }
 298         else {
 299             int alpha = (textColor >> 24 & 0xff);
 300             alpha = 3 * alpha / 4;
 301             textColor = (alpha << 24) | (0x00ffffff & textColor);
 302             textView.setTypeface(null, Typeface.ITALIC);
 303             textView.setHint("");
 304             if (TextUtils.isEmpty(textView.getText())) {
 305                 textView.setVisibility(View.INVISIBLE);
 306             }
 307         }
 308         textView.setTextColor(textColor);
 309
 310     }
 311     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 312         ConstraintLayout.LayoutParams amountLP =
 313                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 314         ConstraintLayout.LayoutParams currencyLP =
 315                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 316
 317         if (position == Currency.Position.before) {
 318             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 319             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 320
 321             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 322             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 323             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 324             amountLP.startToEnd = b.currency.getId();
 325
 326             b.currency.setGravity(Gravity.END);
 327         }
 328         else {
 329             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 330             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 331
 332             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 333             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 334             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 335             amountLP.endToStart = b.currency.getId();
 336
 337             b.currency.setGravity(Gravity.START);
 338         }
 339
 340         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 341         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 342
 343         b.accountRowAccAmounts.setLayoutParams(amountLP);
 344         b.currency.setLayoutParams(currencyLP);
 345
 346         // distance between the amount and the currency symbol
 347         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 348
 349         if (position == Currency.Position.before) {
 350             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 351         }
 352         else {
 353             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 354         }
 355     }
 356     private void setCurrencyString(String currency) {
 357         @ColorInt int textColor = b.dummyText.getTextColors()
 358                                              .getDefaultColor();
 359         if (TextUtils.isEmpty(currency)) {
 360             b.currency.setText(R.string.currency_symbol);
 361             int alpha = (textColor >> 24) & 0xff;
 362             alpha = alpha * 3 / 4;
 363             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 364         }
 365         else {
 366             b.currency.setText(currency);
 367             b.currency.setTextColor(textColor);
 368         }
 369     }
 370     private void setCurrency(Currency currency) {
 371         setCurrencyString((currency == null) ? null : currency.getName());
 372     }
 373     private void setEditable(Boolean editable) {
 374         b.accountRowAccName.setEnabled(editable);
 375         b.accountRowAccAmounts.setEnabled(editable);
 376     }
 377     private void beginUpdates() {
 378         if (inUpdate)
 379             throw new RuntimeException("Already in update mode");
 380         inUpdate = true;
 381     }
 382     private void endUpdates() {
 383         if (!inUpdate)
 384             throw new RuntimeException("Not in update mode");
 385         inUpdate = false;
 386     }
 387     /**
 388      * syncData()
 389      * <p>
 390      * Stores the data from the UI elements into the model item
 391      * Returns true if there were changes made that suggest transaction has to be
 392      * checked for being submittable
 393      */
 394     private boolean syncData() {
 395         if (syncingData) {
 396             Logger.debug("new-trans", "skipping syncData() loop");
 397             return false;
 398         }
 399
 400         if (getAdapterPosition() < 0) {
 401             // probably the row was swiped out
 402             Logger.debug("new-trans", "Ignoring request to suncData(): adapter position negative");
 403             return false;
 404         }
 405
 406         NewTransactionModel.Item item = getItem();
 407
 408         syncingData = true;
 409
 410         boolean significantChange = false;
 411
 412         try {
 413             NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 414
 415             // having account name is important
 416             final Editable incomingAccountName = b.accountRowAccName.getText();
 417             if (TextUtils.isEmpty(acc.getAccountName()) != TextUtils.isEmpty(incomingAccountName))
 418                 significantChange = true;
 419
 420             acc.setAccountName(String.valueOf(incomingAccountName));
 421             final int accNameSelEnd = b.accountRowAccName.getSelectionEnd();
 422             final int accNameSelStart = b.accountRowAccName.getSelectionStart();
 423             acc.setAccountNameCursorPosition(accNameSelEnd);
 424
 425             acc.setComment(String.valueOf(b.comment.getText()));
 426
 427             String amount = String.valueOf(b.accountRowAccAmounts.getText());
 428             amount = amount.trim();
 429
 430             if (amount.isEmpty()) {
 431                 if (acc.isAmountSet())
 432                     significantChange = true;
 433                 acc.resetAmount();
 434                 acc.setAmountValid(true);
 435             }
 436             else {
 437                 try {
 438                     amount = amount.replace(decimalSeparator, decimalDot);
 439                     final float parsedAmount = Float.parseFloat(amount);
 440                     if (!acc.isAmountSet() || !Misc.equalFloats(parsedAmount, acc.getAmount()))
 441                         significantChange = true;
 442                     acc.setAmount(parsedAmount);
 443                     acc.setAmountValid(true);
 444                 }
 445                 catch (NumberFormatException e) {
 446                     Logger.debug("new-trans", String.format(
 447                             "assuming amount is not set due to number format exception. " +
 448                             "input was '%s'", amount));
 449                     if (acc.isAmountValid())
 450                         significantChange = true;
 451                     acc.setAmountValid(false);
 452                 }
 453                 final String curr = String.valueOf(b.currency.getText());
 454                 final String currValue;
 455                 if (curr.equals(b.currency.getContext()
 456                                           .getResources()
 457                                           .getString(R.string.currency_symbol)) || curr.isEmpty())
 458                     currValue = null;
 459                 else
 460                     currValue = curr;
 461
 462                 if (!significantChange && !Misc.equalStrings(acc.getCurrency(), currValue))
 463                     significantChange = true;
 464                 acc.setCurrency(currValue);
 465             }
 466
 467             return significantChange;
 468         }
 469         finally {
 470             syncingData = false;
 471         }
 472     }
 473     /**
 474      * bind
 475      *
 476      * @param item updates the UI elements with the data from the model item
 477      */
 478     @SuppressLint("DefaultLocale")
 479     public void bind(@NonNull NewTransactionModel.Item item) {
 480         beginUpdates();
 481         try {
 482             syncingData = true;
 483             try {
 484                 NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 485
 486                 final String incomingAccountName = acc.getAccountName();
 487                 final String presentAccountName = String.valueOf(b.accountRowAccName.getText());
 488                 if (!Misc.equalStrings(incomingAccountName, presentAccountName)) {
 489                     Logger.debug("bind",
 490                             String.format("Setting account name from '%s' to '%s' (| @ %d)",
 491                                     presentAccountName, incomingAccountName,
 492                                     acc.getAccountNameCursorPosition()));
 493                     // avoid triggering completion pop-up
 494                     AccountAutocompleteAdapter a =
 495                             (AccountAutocompleteAdapter) b.accountRowAccName.getAdapter();
 496                     try {
 497                         b.accountRowAccName.setAdapter(null);
 498                         b.accountRowAccName.setText(incomingAccountName);
 499                         b.accountRowAccName.setSelection(acc.getAccountNameCursorPosition());
 500                     }
 501                     finally {
 502                         b.accountRowAccName.setAdapter(a);
 503                     }
 504                 }
 505
 506                 final String amountHint = acc.getAmountHint();
 507                 if (amountHint == null) {
 508                     b.accountRowAccAmounts.setHint(R.string.zero_amount);
 509                 }
 510                 else {
 511                     b.accountRowAccAmounts.setHint(amountHint);
 512                 }
 513
 514                 b.accountRowAccAmounts.setImeOptions(
 515                         acc.isLast() ? EditorInfo.IME_ACTION_DONE : EditorInfo.IME_ACTION_NEXT);
 516
 517                 setCurrencyString(acc.getCurrency());
 518                 b.accountRowAccAmounts.setText(
 519                         acc.isAmountSet() ? String.format("%4.2f", acc.getAmount()) : null);
 520                 displayAmountValidity(true);
 521
 522                 b.comment.setText(acc.getComment());
 523
 524                 setEditable(true);
 525
 526                 applyFocus(mAdapter.model.getFocusInfo()
 527                                          .getValue());
 528             }
 529             finally {
 530                 syncingData = false;
 531             }
 532         }
 533         finally {
 534             endUpdates();
 535         }
 536     }
 537     private void styleComment(EditText editText, String comment) {
 538         final View focusedView = editText.findFocus();
 539         editText.setTypeface(null, (focusedView == editText) ? Typeface.NORMAL : Typeface.ITALIC);
 540         editText.setVisibility(
 541                 ((focusedView != editText) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 542                                                                           : View.VISIBLE);
 543     }
 544 }