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         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
  96                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
  97         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
  98                 "name", true, this, mProfile);
  99
 100         // FIXME: react on configuration (locale) changes
 101         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 102                                                               .getMonetaryDecimalSeparator());
 103         decimalDot = ".";
 104
 105         final TextWatcher tw = new TextWatcher() {
 106             @Override
 107             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 108             }
 109
 110             @Override
 111             public void onTextChanged(CharSequence s, int start, int before, int count) {
 112             }
 113
 114             @Override
 115             public void afterTextChanged(Editable s) {
 116 //                debug("input", "text changed");
 117                 if (inUpdate)
 118                     return;
 119
 120                 Logger.debug("textWatcher", "calling syncData()");
 121                 syncData();
 122                 Logger.debug("textWatcher",
 123                         "syncData() returned, checking if transaction is submittable");
 124                 adapter.model.checkTransactionSubmittable(adapter);
 125                 Logger.debug("textWatcher", "done");
 126             }
 127         };
 128         final TextWatcher amountWatcher = new TextWatcher() {
 129             @Override
 130             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 131             }
 132             @Override
 133             public void onTextChanged(CharSequence s, int start, int before, int count) {
 134
 135             }
 136             @Override
 137             public void afterTextChanged(Editable s) {
 138                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 139                     // only one decimal separator is allowed
 140                     // plus and minus are allowed only at the beginning
 141                     String val = s.toString();
 142                     if (val.isEmpty())
 143                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 144                                 "0123456789+-" + decimalSeparator + decimalDot));
 145                     else if (val.contains(decimalSeparator) || val.contains(decimalDot))
 146                         tvAmount.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
 147                     else
 148                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 149                                 "0123456789" + decimalSeparator + decimalDot));
 150
 151                     syncData();
 152                     adapter.model.checkTransactionSubmittable(adapter);
 153                 }
 154             }
 155         };
 156         tvDescription.addTextChangedListener(tw);
 157         tvAccount.addTextChangedListener(tw);
 158         tvAmount.addTextChangedListener(amountWatcher);
 159
 160         // FIXME: react on locale changes
 161         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 162             tvAmount.setKeyListener(DigitsKeyListener.getInstance(Locale.getDefault(), true, true));
 163         else
 164             tvAmount.setKeyListener(
 165                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 166
 167         dateObserver = date -> {
 168             if (syncingData)
 169                 return;
 170             syncingData = true;
 171             try {
 172                 tvDate.setText(item.getFormattedDate());
 173             }
 174             finally {
 175                 syncingData = false;
 176             }
 177         };
 178         descriptionObserver = description -> {
 179             if (syncingData)
 180                 return;
 181             syncingData = true;
 182             try {
 183                 tvDescription.setText(description);
 184             }
 185             finally {
 186                 syncingData = false;
 187             }
 188         };
 189         hintObserver = hint -> {
 190             if (syncingData)
 191                 return;
 192             syncingData = true;
 193             try {
 194                 if (hint == null)
 195                     tvAmount.setHint(R.string.zero_amount);
 196                 else
 197                     tvAmount.setHint(hint);
 198             }
 199             finally {
 200                 syncingData = false;
 201             }
 202         };
 203         editableObserver = this::setEditable;
 204         focusedAccountObserver = index -> {
 205             if ((index != null) && index.equals(getAdapterPosition())) {
 206                 switch (item.getType()) {
 207                     case generalData:
 208                         // bad idea - double pop-up, and not really necessary.
 209                         // the user can tap the input to get the calendar
 210                         //if (!tvDate.hasFocus()) tvDate.requestFocus();
 211                         boolean focused = tvDescription.requestFocus();
 212                         tvDescription.dismissDropDown();
 213                         if (focused)
 214                             Misc.showSoftKeyboard(
 215                                     (NewTransactionActivity) tvDescription.getContext());
 216                         break;
 217                     case transactionRow:
 218                         focused = tvAccount.requestFocus();
 219                         tvAccount.dismissDropDown();
 220                         if (focused)
 221                             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 222
 223                         break;
 224                 }
 225             }
 226         };
 227         accountCountObserver = count -> {
 228             final int adapterPosition = getAdapterPosition();
 229             final int layoutPosition = getLayoutPosition();
 230             Logger.debug("holder",
 231                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 232                             adapterPosition, layoutPosition, item.getType()
 233                                                                  .toString()
 234                                                                  .concat(item.getType() ==
 235                                                                          NewTransactionModel.ItemType.transactionRow
 236                                                                          ? String.format(Locale.US,
 237                                                                          "'%s'=%s",
 238                                                                          item.getAccount()
 239                                                                              .getAccountName(),
 240                                                                          item.getAccount()
 241                                                                              .isAmountSet()
 242                                                                          ? String.format(Locale.US,
 243                                                                                  "%.2f",
 244                                                                                  item.getAccount()
 245                                                                                      .getAmount())
 246                                                                          : "unset") : "")));
 247             if (adapterPosition == count)
 248                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 249             else
 250                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 251         };
 252     }
 253     private void setEditable(Boolean editable) {
 254         tvDate.setEnabled(editable);
 255         tvDescription.setEnabled(editable);
 256         tvAccount.setEnabled(editable);
 257         tvAmount.setEnabled(editable);
 258     }
 259     private void beginUpdates() {
 260         if (inUpdate)
 261             throw new RuntimeException("Already in update mode");
 262         inUpdate = true;
 263     }
 264     private void endUpdates() {
 265         if (!inUpdate)
 266             throw new RuntimeException("Not in update mode");
 267         inUpdate = false;
 268     }
 269     /**
 270      * syncData()
 271      * <p>
 272      * Stores the data from the UI elements into the model item
 273      */
 274     private void syncData() {
 275         if (item == null)
 276             return;
 277
 278         if (syncingData) {
 279             Logger.debug("new-trans", "skipping syncData() loop");
 280             return;
 281         }
 282
 283         syncingData = true;
 284
 285         try {
 286             switch (item.getType()) {
 287                 case generalData:
 288                     item.setDate(String.valueOf(tvDate.getText()));
 289                     item.setDescription(String.valueOf(tvDescription.getText()));
 290                     break;
 291                 case transactionRow:
 292                     item.getAccount()
 293                         .setAccountName(String.valueOf(tvAccount.getText()));
 294
 295                     // TODO: handle multiple amounts
 296                     String amount = String.valueOf(tvAmount.getText());
 297                     amount = amount.trim();
 298
 299                     if (amount.isEmpty()) {
 300                         item.getAccount()
 301                             .resetAmount();
 302                     }
 303                     else {
 304                         try {
 305                             amount = amount.replace(decimalSeparator, decimalDot);
 306                             item.getAccount()
 307                                 .setAmount(Float.parseFloat(amount));
 308                         }
 309                         catch (NumberFormatException e) {
 310                             Logger.debug("new-trans", String.format(
 311                                     "assuming amount is not set due to number format exception. " +
 312                                     "input was '%s'", amount));
 313                             item.getAccount()
 314                                 .resetAmount();
 315                         }
 316                     }
 317
 318                     break;
 319                 case bottomFiller:
 320                     throw new RuntimeException("Should not happen");
 321             }
 322         }
 323         finally {
 324             syncingData = false;
 325         }
 326     }
 327     private void pickTransactionDate() {
 328         DatePickerFragment picker = new DatePickerFragment();
 329         picker.setOnDatePickedListener(this);
 330         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 331                 "datePicker");
 332     }
 333     /**
 334      * setData
 335      *
 336      * @param item updates the UI elements with the data from the model item
 337      */
 338     @SuppressLint("DefaultLocale")
 339     public void setData(NewTransactionModel.Item item) {
 340         beginUpdates();
 341         try {
 342             if (this.item != null && !this.item.equals(item)) {
 343                 this.item.stopObservingDate(dateObserver);
 344                 this.item.stopObservingDescription(descriptionObserver);
 345                 this.item.stopObservingAmountHint(hintObserver);
 346                 this.item.stopObservingEditableFlag(editableObserver);
 347                 this.item.getModel()
 348                          .stopObservingFocusedItem(focusedAccountObserver);
 349                 this.item.getModel()
 350                          .stopObservingAccountCount(accountCountObserver);
 351
 352                 this.item = null;
 353             }
 354
 355             switch (item.getType()) {
 356                 case generalData:
 357                     tvDate.setText(item.getFormattedDate());
 358                     tvDescription.setText(item.getDescription());
 359                     lHead.setVisibility(View.VISIBLE);
 360                     lAccount.setVisibility(View.GONE);
 361                     lPadding.setVisibility(View.GONE);
 362                     setEditable(true);
 363                     break;
 364                 case transactionRow:
 365                     LedgerTransactionAccount acc = item.getAccount();
 366                     tvAccount.setText(acc.getAccountName());
 367                     if (acc.isAmountSet()) {
 368                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 369                     }
 370                     else {
 371                         tvAmount.setText("");
 372 //                        tvAmount.setHint(R.string.zero_amount);
 373                     }
 374                     tvAmount.setHint(item.getAmountHint());
 375                     lHead.setVisibility(View.GONE);
 376                     lAccount.setVisibility(View.VISIBLE);
 377                     lPadding.setVisibility(View.GONE);
 378                     setEditable(true);
 379                     break;
 380                 case bottomFiller:
 381                     lHead.setVisibility(View.GONE);
 382                     lAccount.setVisibility(View.GONE);
 383                     lPadding.setVisibility(View.VISIBLE);
 384                     setEditable(false);
 385                     break;
 386             }
 387
 388             if (this.item == null) { // was null or has changed
 389                 this.item = item;
 390                 final NewTransactionActivity activity =
 391                         (NewTransactionActivity) tvDescription.getContext();
 392                 item.observeDate(activity, dateObserver);
 393                 item.observeDescription(activity, descriptionObserver);
 394                 item.observeAmountHint(activity, hintObserver);
 395                 item.observeEditableFlag(activity, editableObserver);
 396                 item.getModel()
 397                     .observeFocusedItem(activity, focusedAccountObserver);
 398                 item.getModel()
 399                     .observeAccountCount(activity, accountCountObserver);
 400             }
 401         }
 402         finally {
 403             endUpdates();
 404         }
 405     }
 406     @Override
 407     public void onDatePicked(int year, int month, int day) {
 408         final Calendar c = GregorianCalendar.getInstance();
 409         c.set(year, month, day);
 410         item.setDate(c.getTime());
 411         boolean focused = tvDescription.requestFocus();
 412         if (focused)
 413             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 414
 415     }
 416     @Override
 417     public void descriptionSelected(String description) {
 418         tvAccount.setText(description);
 419         tvAmount.requestFocus(View.FOCUS_FORWARD);
 420     }
 421 }