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.AccountAutocompleteAdapter;
  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 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(getBindingAdapterPosition(), 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 != getBindingAdapterPosition()))
 225                 return;
 226
 227             final NewTransactionModel.Item item = getItem();
 228             if (item == null)
 229                 return;
 230
 231             NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 232             switch (focusInfo.element) {
 233                 case Amount:
 234                     b.accountRowAccAmounts.requestFocus();
 235                     break;
 236                 case Comment:
 237                     b.comment.setVisibility(View.VISIBLE);
 238                     b.comment.requestFocus();
 239                     break;
 240                 case Account:
 241                     boolean focused = b.accountRowAccName.requestFocus();
 242 //                                         b.accountRowAccName.dismissDropDown();
 243                     if (focused)
 244                         Misc.showSoftKeyboard((NewTransactionActivity) b.getRoot()
 245                                                                         .getContext());
 246                     break;
 247             }
 248         }
 249         finally {
 250             ignoreFocusChanges = false;
 251         }
 252     }
 253     public void checkAmountValid(String s) {
 254         boolean valid = true;
 255         try {
 256             if (s.length() > 0) {
 257                 float ignored = Float.parseFloat(s.replace(decimalSeparator, decimalDot));
 258             }
 259         }
 260         catch (NumberFormatException ex) {
 261             valid = false;
 262         }
 263
 264         displayAmountValidity(valid);
 265     }
 266     private void displayAmountValidity(boolean valid) {
 267         b.accountRowAccAmounts.setCompoundDrawablesRelativeWithIntrinsicBounds(
 268                 valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 269         b.accountRowAccAmounts.setMinEms(valid ? 4 : 5);
 270     }
 271     private void monitorComment(EditText editText) {
 272         editText.addTextChangedListener(new TextWatcher() {
 273             @Override
 274             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 275             }
 276             @Override
 277             public void onTextChanged(CharSequence s, int start, int before, int count) {
 278             }
 279             @Override
 280             public void afterTextChanged(Editable s) {
 281 //                debug("input", "text changed");
 282                 if (inUpdate)
 283                     return;
 284
 285                 Logger.debug("textWatcher", "calling syncData()");
 286                 syncData();
 287                 Logger.debug("textWatcher",
 288                         "syncData() returned, checking if transaction is submittable");
 289                 styleComment(editText, s.toString());
 290                 Logger.debug("textWatcher", "done");
 291             }
 292         });
 293     }
 294     private void commentFocusChanged(TextView textView, boolean hasFocus) {
 295         @ColorInt int textColor;
 296         textColor = b.dummyText.getTextColors()
 297                                .getDefaultColor();
 298         if (hasFocus) {
 299             textView.setTypeface(null, Typeface.NORMAL);
 300             textView.setHint(R.string.transaction_account_comment_hint);
 301         }
 302         else {
 303             int alpha = (textColor >> 24 & 0xff);
 304             alpha = 3 * alpha / 4;
 305             textColor = (alpha << 24) | (0x00ffffff & textColor);
 306             textView.setTypeface(null, Typeface.ITALIC);
 307             textView.setHint("");
 308             if (TextUtils.isEmpty(textView.getText())) {
 309                 textView.setVisibility(View.INVISIBLE);
 310             }
 311         }
 312         textView.setTextColor(textColor);
 313
 314     }
 315     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 316         ConstraintLayout.LayoutParams amountLP =
 317                 (ConstraintLayout.LayoutParams) b.accountRowAccAmounts.getLayoutParams();
 318         ConstraintLayout.LayoutParams currencyLP =
 319                 (ConstraintLayout.LayoutParams) b.currency.getLayoutParams();
 320
 321         if (position == Currency.Position.before) {
 322             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 323             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 324
 325             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 326             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 327             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 328             amountLP.startToEnd = b.currency.getId();
 329
 330             b.currency.setGravity(Gravity.END);
 331         }
 332         else {
 333             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 334             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 335
 336             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 337             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 338             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 339             amountLP.endToStart = b.currency.getId();
 340
 341             b.currency.setGravity(Gravity.START);
 342         }
 343
 344         amountLP.resolveLayoutDirection(b.accountRowAccAmounts.getLayoutDirection());
 345         currencyLP.resolveLayoutDirection(b.currency.getLayoutDirection());
 346
 347         b.accountRowAccAmounts.setLayoutParams(amountLP);
 348         b.currency.setLayoutParams(currencyLP);
 349
 350         // distance between the amount and the currency symbol
 351         int gapSize = DimensionUtils.sp2px(b.currency.getContext(), 5);
 352
 353         if (position == Currency.Position.before) {
 354             b.currency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 355         }
 356         else {
 357             b.currency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 358         }
 359     }
 360     private void setCurrencyString(String currency) {
 361         @ColorInt int textColor = b.dummyText.getTextColors()
 362                                              .getDefaultColor();
 363         if (TextUtils.isEmpty(currency)) {
 364             b.currency.setText(R.string.currency_symbol);
 365             int alpha = (textColor >> 24) & 0xff;
 366             alpha = alpha * 3 / 4;
 367             b.currency.setTextColor((alpha << 24) | (0x00ffffff & textColor));
 368         }
 369         else {
 370             b.currency.setText(currency);
 371             b.currency.setTextColor(textColor);
 372         }
 373     }
 374     private void setCurrency(Currency currency) {
 375         setCurrencyString((currency == null) ? null : currency.getName());
 376     }
 377     private void setEditable(Boolean editable) {
 378         b.accountRowAccName.setEnabled(editable);
 379         b.accountRowAccAmounts.setEnabled(editable);
 380     }
 381     private void beginUpdates() {
 382         if (inUpdate)
 383             throw new RuntimeException("Already in update mode");
 384         inUpdate = true;
 385     }
 386     private void endUpdates() {
 387         if (!inUpdate)
 388             throw new RuntimeException("Not in update mode");
 389         inUpdate = false;
 390     }
 391     /**
 392      * syncData()
 393      * <p>
 394      * Stores the data from the UI elements into the model item
 395      * Returns true if there were changes made that suggest transaction has to be
 396      * checked for being submittable
 397      */
 398     private boolean syncData() {
 399         if (syncingData) {
 400             Logger.debug("new-trans", "skipping syncData() loop");
 401             return false;
 402         }
 403
 404         if (getBindingAdapterPosition() == RecyclerView.NO_POSITION) {
 405             // probably the row was swiped out
 406             Logger.debug("new-trans", "Ignoring request to suncData(): adapter position negative");
 407             return false;
 408         }
 409
 410         final NewTransactionModel.Item item = getItem();
 411         if (item == null)
 412             return false;
 413
 414         syncingData = true;
 415
 416         boolean significantChange = false;
 417
 418         try {
 419             NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 420
 421             // having account name is important
 422             final Editable incomingAccountName = b.accountRowAccName.getText();
 423             if (TextUtils.isEmpty(acc.getAccountName()) != TextUtils.isEmpty(incomingAccountName))
 424                 significantChange = true;
 425
 426             acc.setAccountName(String.valueOf(incomingAccountName));
 427             final int accNameSelEnd = b.accountRowAccName.getSelectionEnd();
 428             final int accNameSelStart = b.accountRowAccName.getSelectionStart();
 429             acc.setAccountNameCursorPosition(accNameSelEnd);
 430
 431             acc.setComment(String.valueOf(b.comment.getText()));
 432
 433             String amount = String.valueOf(b.accountRowAccAmounts.getText());
 434             amount = amount.trim();
 435
 436             if (amount.isEmpty()) {
 437                 if (acc.isAmountSet())
 438                     significantChange = true;
 439                 acc.resetAmount();
 440                 acc.setAmountValid(true);
 441             }
 442             else {
 443                 try {
 444                     amount = amount.replace(decimalSeparator, decimalDot);
 445                     final float parsedAmount = Float.parseFloat(amount);
 446                     if (!acc.isAmountSet() || !Misc.equalFloats(parsedAmount, acc.getAmount()))
 447                         significantChange = true;
 448                     acc.setAmount(parsedAmount);
 449                     acc.setAmountValid(true);
 450                 }
 451                 catch (NumberFormatException e) {
 452                     Logger.debug("new-trans", String.format(
 453                             "assuming amount is not set due to number format exception. " +
 454                             "input was '%s'", amount));
 455                     if (acc.isAmountValid())
 456                         significantChange = true;
 457                     acc.setAmountValid(false);
 458                 }
 459                 final String curr = String.valueOf(b.currency.getText());
 460                 final String currValue;
 461                 if (curr.equals(b.currency.getContext()
 462                                           .getResources()
 463                                           .getString(R.string.currency_symbol)) || curr.isEmpty())
 464                     currValue = null;
 465                 else
 466                     currValue = curr;
 467
 468                 if (!significantChange && !Misc.equalStrings(acc.getCurrency(), currValue))
 469                     significantChange = true;
 470                 acc.setCurrency(currValue);
 471             }
 472
 473             return significantChange;
 474         }
 475         finally {
 476             syncingData = false;
 477         }
 478     }
 479     /**
 480      * bind
 481      *
 482      * @param item updates the UI elements with the data from the model item
 483      */
 484     @SuppressLint("DefaultLocale")
 485     public void bind(@NonNull NewTransactionModel.Item item) {
 486         beginUpdates();
 487         try {
 488             syncingData = true;
 489             try {
 490                 NewTransactionModel.TransactionAccount acc = item.toTransactionAccount();
 491
 492                 final String incomingAccountName = acc.getAccountName();
 493                 final String presentAccountName = String.valueOf(b.accountRowAccName.getText());
 494                 if (!Misc.equalStrings(incomingAccountName, presentAccountName)) {
 495                     Logger.debug("bind",
 496                             String.format("Setting account name from '%s' to '%s' (| @ %d)",
 497                                     presentAccountName, incomingAccountName,
 498                                     acc.getAccountNameCursorPosition()));
 499                     // avoid triggering completion pop-up
 500                     AccountAutocompleteAdapter a =
 501                             (AccountAutocompleteAdapter) b.accountRowAccName.getAdapter();
 502                     try {
 503                         b.accountRowAccName.setAdapter(null);
 504                         b.accountRowAccName.setText(incomingAccountName);
 505                         b.accountRowAccName.setSelection(acc.getAccountNameCursorPosition());
 506                     }
 507                     finally {
 508                         b.accountRowAccName.setAdapter(a);
 509                     }
 510                 }
 511
 512                 final String amountHint = acc.getAmountHint();
 513                 if (amountHint == null) {
 514                     b.accountRowAccAmounts.setHint(R.string.zero_amount);
 515                 }
 516                 else {
 517                     b.accountRowAccAmounts.setHint(amountHint);
 518                 }
 519
 520                 b.accountRowAccAmounts.setImeOptions(
 521                         acc.isLast() ? EditorInfo.IME_ACTION_DONE : EditorInfo.IME_ACTION_NEXT);
 522
 523                 setCurrencyString(acc.getCurrency());
 524                 b.accountRowAccAmounts.setText(
 525                         acc.isAmountSet() ? String.format("%4.2f", acc.getAmount()) : null);
 526                 displayAmountValidity(true);
 527
 528                 final String comment = acc.getComment();
 529                 b.comment.setText(comment);
 530                 styleComment(b.comment, comment);
 531
 532                 setEditable(true);
 533
 534                 NewTransactionItemsAdapter adapter =
 535                         (NewTransactionItemsAdapter) getBindingAdapter();
 536                 if (adapter != null)
 537                     applyFocus(adapter.model.getFocusInfo()
 538                                             .getValue());
 539             }
 540             finally {
 541                 syncingData = false;
 542             }
 543         }
 544         finally {
 545             endUpdates();
 546         }
 547     }
 548     private void styleComment(EditText editText, String comment) {
 549         final View focusedView = editText.findFocus();
 550         editText.setTypeface(null, (focusedView == editText) ? Typeface.NORMAL : Typeface.ITALIC);
 551         editText.setVisibility(
 552                 ((focusedView != editText) && TextUtils.isEmpty(comment)) ? View.INVISIBLE
 553                                                                           : View.VISIBLE);
 554     }
 555 }