app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionItemHolder.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.annotation.SuppressLint;
  21 import android.os.Build;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.text.method.DigitsKeyListener;
  25 import android.view.View;
  26 import android.view.inputmethod.EditorInfo;
  27 import android.widget.AutoCompleteTextView;
  28 import android.widget.FrameLayout;
  29 import android.widget.LinearLayout;
  30 import android.widget.TextView;
  31
  32 import androidx.annotation.NonNull;
  33 import androidx.lifecycle.Observer;
  34 import androidx.recyclerview.widget.RecyclerView;
  35
  36 import net.ktnx.mobileledger.R;
  37 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  38 import net.ktnx.mobileledger.model.Data;
  39 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  40 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  41 import net.ktnx.mobileledger.ui.DatePickerFragment;
  42 import net.ktnx.mobileledger.utils.Logger;
  43 import net.ktnx.mobileledger.utils.MLDB;
  44 import net.ktnx.mobileledger.utils.Misc;
  45
  46 import java.text.DecimalFormatSymbols;
  47 import java.util.Calendar;
  48 import java.util.Date;
  49 import java.util.GregorianCalendar;
  50 import java.util.Locale;
  51
  52 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  53         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  54     private final String decimalSeparator;
  55     private final String decimalDot;
  56     private NewTransactionModel.Item item;
  57     private TextView tvDate;
  58     private AutoCompleteTextView tvDescription;
  59     private AutoCompleteTextView tvAccount;
  60     private TextView tvAmount;
  61     private LinearLayout lHead;
  62     private LinearLayout lAccount;
  63     private FrameLayout lPadding;
  64     private MobileLedgerProfile mProfile;
  65     private Date date;
  66     private Observer<Date> dateObserver;
  67     private Observer<String> descriptionObserver;
  68     private Observer<String> hintObserver;
  69     private Observer<Integer> focusedAccountObserver;
  70     private Observer<Integer> accountCountObserver;
  71     private Observer<Boolean> editableObserver;
  72     private boolean inUpdate = false;
  73     private boolean syncingData = false;
  74     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
  75         super(itemView);
  76         tvAccount = itemView.findViewById(R.id.account_row_acc_name);
  77         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
  78         tvDate = itemView.findViewById(R.id.new_transaction_date);
  79         tvDescription = itemView.findViewById(R.id.new_transaction_description);
  80         lHead = itemView.findViewById(R.id.ntr_data);
  81         lAccount = itemView.findViewById(R.id.ntr_account);
  82         lPadding = itemView.findViewById(R.id.ntr_padding);
  83
  84         tvDescription.setNextFocusForwardId(View.NO_ID);
  85         tvAccount.setNextFocusForwardId(View.NO_ID);
  86         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
  87
  88         tvDate.setOnClickListener(v -> pickTransactionDate());
  89
  90         mProfile = Data.profile.getValue();
  91         if (mProfile == null)
  92             throw new AssertionError();
  93
  94         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
  95             if (hasFocus) {
  96                 boolean wasSyncing = syncingData;
  97                 syncingData = true;
  98                 try {
  99                     adapter.updateFocusedItem(getAdapterPosition());
 100                 }
 101                 finally {
 102                     syncingData = wasSyncing;
 103                 }
 104             }
 105         };
 106
 107         tvDescription.setOnFocusChangeListener(focusMonitor);
 108         tvAccount.setOnFocusChangeListener(focusMonitor);
 109         tvAmount.setOnFocusChangeListener(focusMonitor);
 110
 111         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 112                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 113         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 114                 "name", true, this, mProfile);
 115
 116         // FIXME: react on configuration (locale) changes
 117         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 118                                                               .getMonetaryDecimalSeparator());
 119         decimalDot = ".";
 120
 121         final TextWatcher tw = new TextWatcher() {
 122             @Override
 123             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 124             }
 125
 126             @Override
 127             public void onTextChanged(CharSequence s, int start, int before, int count) {
 128             }
 129
 130             @Override
 131             public void afterTextChanged(Editable s) {
 132 //                debug("input", "text changed");
 133                 if (inUpdate)
 134                     return;
 135
 136                 Logger.debug("textWatcher", "calling syncData()");
 137                 syncData();
 138                 Logger.debug("textWatcher",
 139                         "syncData() returned, checking if transaction is submittable");
 140                 adapter.model.checkTransactionSubmittable(adapter);
 141                 Logger.debug("textWatcher", "done");
 142             }
 143         };
 144         final TextWatcher amountWatcher = new TextWatcher() {
 145             @Override
 146             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 147             }
 148             @Override
 149             public void onTextChanged(CharSequence s, int start, int before, int count) {
 150
 151             }
 152             @Override
 153             public void afterTextChanged(Editable s) {
 154                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 155                     // only one decimal separator is allowed
 156                     // plus and minus are allowed only at the beginning
 157                     String val = s.toString();
 158                     if (val.isEmpty())
 159                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 160                                 "0123456789+-" + decimalSeparator + decimalDot));
 161                     else if (val.contains(decimalSeparator) || val.contains(decimalDot))
 162                         tvAmount.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
 163                     else
 164                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 165                                 "0123456789" + decimalSeparator + decimalDot));
 166
 167                     syncData();
 168                     adapter.model.checkTransactionSubmittable(adapter);
 169                 }
 170             }
 171         };
 172         tvDescription.addTextChangedListener(tw);
 173         tvAccount.addTextChangedListener(tw);
 174         tvAmount.addTextChangedListener(amountWatcher);
 175
 176         // FIXME: react on locale changes
 177         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 178             tvAmount.setKeyListener(DigitsKeyListener.getInstance(Locale.getDefault(), true, true));
 179         else
 180             tvAmount.setKeyListener(
 181                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 182
 183         dateObserver = date -> {
 184             if (syncingData)
 185                 return;
 186             syncingData = true;
 187             try {
 188                 tvDate.setText(item.getFormattedDate());
 189             }
 190             finally {
 191                 syncingData = false;
 192             }
 193         };
 194         descriptionObserver = description -> {
 195             if (syncingData)
 196                 return;
 197             syncingData = true;
 198             try {
 199                 tvDescription.setText(description);
 200             }
 201             finally {
 202                 syncingData = false;
 203             }
 204         };
 205         hintObserver = hint -> {
 206             if (syncingData)
 207                 return;
 208             syncingData = true;
 209             try {
 210                 if (hint == null)
 211                     tvAmount.setHint(R.string.zero_amount);
 212                 else
 213                     tvAmount.setHint(hint);
 214             }
 215             finally {
 216                 syncingData = false;
 217             }
 218         };
 219         editableObserver = this::setEditable;
 220         focusedAccountObserver = index -> {
 221             if ((index != null) && index.equals(getAdapterPosition())) {
 222                 switch (item.getType()) {
 223                     case generalData:
 224                         // bad idea - double pop-up, and not really necessary.
 225                         // the user can tap the input to get the calendar
 226                         //if (!tvDate.hasFocus()) tvDate.requestFocus();
 227                         boolean focused = tvDescription.requestFocus();
 228                         tvDescription.dismissDropDown();
 229                         if (focused)
 230                             Misc.showSoftKeyboard(
 231                                     (NewTransactionActivity) tvDescription.getContext());
 232                         break;
 233                     case transactionRow:
 234                         // do nothing if a row element already has the focus
 235                         if (!itemView.hasFocus()) {
 236                             focused = tvAccount.requestFocus();
 237                             tvAccount.dismissDropDown();
 238                             if (focused)
 239                                 Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 240                         }
 241
 242                         break;
 243                 }
 244             }
 245         };
 246         accountCountObserver = count -> {
 247             final int adapterPosition = getAdapterPosition();
 248             final int layoutPosition = getLayoutPosition();
 249             Logger.debug("holder",
 250                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 251                             adapterPosition, layoutPosition, item.getType()
 252                                                                  .toString()
 253                                                                  .concat(item.getType() ==
 254                                                                          NewTransactionModel.ItemType.transactionRow
 255                                                                          ? String.format(Locale.US,
 256                                                                          "'%s'=%s",
 257                                                                          item.getAccount()
 258                                                                              .getAccountName(),
 259                                                                          item.getAccount()
 260                                                                              .isAmountSet()
 261                                                                          ? String.format(Locale.US,
 262                                                                                  "%.2f",
 263                                                                                  item.getAccount()
 264                                                                                      .getAmount())
 265                                                                          : "unset") : "")));
 266             if (adapterPosition == count)
 267                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 268             else
 269                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 270         };
 271     }
 272     private void setEditable(Boolean editable) {
 273         tvDate.setEnabled(editable);
 274         tvDescription.setEnabled(editable);
 275         tvAccount.setEnabled(editable);
 276         tvAmount.setEnabled(editable);
 277     }
 278     private void beginUpdates() {
 279         if (inUpdate)
 280             throw new RuntimeException("Already in update mode");
 281         inUpdate = true;
 282     }
 283     private void endUpdates() {
 284         if (!inUpdate)
 285             throw new RuntimeException("Not in update mode");
 286         inUpdate = false;
 287     }
 288     /**
 289      * syncData()
 290      * <p>
 291      * Stores the data from the UI elements into the model item
 292      */
 293     private void syncData() {
 294         if (item == null)
 295             return;
 296
 297         if (syncingData) {
 298             Logger.debug("new-trans", "skipping syncData() loop");
 299             return;
 300         }
 301
 302         syncingData = true;
 303
 304         try {
 305             switch (item.getType()) {
 306                 case generalData:
 307                     item.setDate(String.valueOf(tvDate.getText()));
 308                     item.setDescription(String.valueOf(tvDescription.getText()));
 309                     break;
 310                 case transactionRow:
 311                     item.getAccount()
 312                         .setAccountName(String.valueOf(tvAccount.getText()));
 313
 314                     // TODO: handle multiple amounts
 315                     String amount = String.valueOf(tvAmount.getText());
 316                     amount = amount.trim();
 317
 318                     if (amount.isEmpty()) {
 319                         item.getAccount()
 320                             .resetAmount();
 321                     }
 322                     else {
 323                         try {
 324                             amount = amount.replace(decimalSeparator, decimalDot);
 325                             item.getAccount()
 326                                 .setAmount(Float.parseFloat(amount));
 327                         }
 328                         catch (NumberFormatException e) {
 329                             Logger.debug("new-trans", String.format(
 330                                     "assuming amount is not set due to number format exception. " +
 331                                     "input was '%s'", amount));
 332                             item.getAccount()
 333                                 .resetAmount();
 334                         }
 335                     }
 336
 337                     break;
 338                 case bottomFiller:
 339                     throw new RuntimeException("Should not happen");
 340             }
 341         }
 342         finally {
 343             syncingData = false;
 344         }
 345     }
 346     private void pickTransactionDate() {
 347         DatePickerFragment picker = new DatePickerFragment();
 348         picker.setOnDatePickedListener(this);
 349         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 350                 "datePicker");
 351     }
 352     /**
 353      * setData
 354      *
 355      * @param item updates the UI elements with the data from the model item
 356      */
 357     @SuppressLint("DefaultLocale")
 358     public void setData(NewTransactionModel.Item item) {
 359         beginUpdates();
 360         try {
 361             if (this.item != null && !this.item.equals(item)) {
 362                 this.item.stopObservingDate(dateObserver);
 363                 this.item.stopObservingDescription(descriptionObserver);
 364                 this.item.stopObservingAmountHint(hintObserver);
 365                 this.item.stopObservingEditableFlag(editableObserver);
 366                 this.item.getModel()
 367                          .stopObservingFocusedItem(focusedAccountObserver);
 368                 this.item.getModel()
 369                          .stopObservingAccountCount(accountCountObserver);
 370
 371                 this.item = null;
 372             }
 373
 374             switch (item.getType()) {
 375                 case generalData:
 376                     tvDate.setText(item.getFormattedDate());
 377                     tvDescription.setText(item.getDescription());
 378                     lHead.setVisibility(View.VISIBLE);
 379                     lAccount.setVisibility(View.GONE);
 380                     lPadding.setVisibility(View.GONE);
 381                     setEditable(true);
 382                     break;
 383                 case transactionRow:
 384                     LedgerTransactionAccount acc = item.getAccount();
 385                     tvAccount.setText(acc.getAccountName());
 386                     if (acc.isAmountSet()) {
 387                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 388                     }
 389                     else {
 390                         tvAmount.setText("");
 391 //                        tvAmount.setHint(R.string.zero_amount);
 392                     }
 393                     tvAmount.setHint(item.getAmountHint());
 394                     lHead.setVisibility(View.GONE);
 395                     lAccount.setVisibility(View.VISIBLE);
 396                     lPadding.setVisibility(View.GONE);
 397                     setEditable(true);
 398                     break;
 399                 case bottomFiller:
 400                     lHead.setVisibility(View.GONE);
 401                     lAccount.setVisibility(View.GONE);
 402                     lPadding.setVisibility(View.VISIBLE);
 403                     setEditable(false);
 404                     break;
 405             }
 406
 407             if (this.item == null) { // was null or has changed
 408                 this.item = item;
 409                 final NewTransactionActivity activity =
 410                         (NewTransactionActivity) tvDescription.getContext();
 411                 item.observeDate(activity, dateObserver);
 412                 item.observeDescription(activity, descriptionObserver);
 413                 item.observeAmountHint(activity, hintObserver);
 414                 item.observeEditableFlag(activity, editableObserver);
 415                 item.getModel()
 416                     .observeFocusedItem(activity, focusedAccountObserver);
 417                 item.getModel()
 418                     .observeAccountCount(activity, accountCountObserver);
 419             }
 420         }
 421         finally {
 422             endUpdates();
 423         }
 424     }
 425     @Override
 426     public void onDatePicked(int year, int month, int day) {
 427         final Calendar c = GregorianCalendar.getInstance();
 428         c.set(year, month, day);
 429         item.setDate(c.getTime());
 430         boolean focused = tvDescription.requestFocus();
 431         if (focused)
 432             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 433
 434     }
 435     @Override
 436     public void descriptionSelected(String description) {
 437         tvAccount.setText(description);
 438         tvAmount.requestFocus(View.FOCUS_FORWARD);
 439     }
 440 }