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