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.constraintlayout.widget.ConstraintLayout;
  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 ConstraintLayout 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.setOnFocusChangeListener((v, hasFocus) -> {
  90             if (hasFocus)
  91                 pickTransactionDate();
  92         });
  93         tvDate.setOnClickListener(v -> pickTransactionDate());
  94
  95         mProfile = Data.profile.getValue();
  96         if (mProfile == null)
  97             throw new AssertionError();
  98
  99         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 100                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 101         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 102                 "name", true, this, mProfile);
 103
 104         // FIXME: react on configuration (locale) changes
 105         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 106                                                               .getMonetaryDecimalSeparator());
 107         decimalDot = ".";
 108
 109         final TextWatcher tw = new TextWatcher() {
 110             @Override
 111             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 112             }
 113
 114             @Override
 115             public void onTextChanged(CharSequence s, int start, int before, int count) {
 116             }
 117
 118             @Override
 119             public void afterTextChanged(Editable s) {
 120 //                debug("input", "text changed");
 121                 if (inUpdate)
 122                     return;
 123
 124                 Logger.debug("textWatcher", "calling syncData()");
 125                 syncData();
 126                 Logger.debug("textWatcher",
 127                         "syncData() returned, checking if transaction is submittable");
 128                 adapter.model.checkTransactionSubmittable(adapter);
 129                 Logger.debug("textWatcher", "done");
 130             }
 131         };
 132         final TextWatcher amountWatcher = new TextWatcher() {
 133             @Override
 134             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 135             }
 136             @Override
 137             public void onTextChanged(CharSequence s, int start, int before, int count) {
 138
 139             }
 140             @Override
 141             public void afterTextChanged(Editable s) {
 142                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 143                     // only one decimal separator is allowed
 144                     // plus and minus are allowed only at the beginning
 145                     String val = s.toString();
 146                     if (val.isEmpty())
 147                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 148                                 "0123456789+-" + decimalSeparator + decimalDot));
 149                     else if (val.contains(decimalSeparator) || val.contains(decimalDot))
 150                         tvAmount.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
 151                     else
 152                         tvAmount.setKeyListener(DigitsKeyListener.getInstance(
 153                                 "0123456789" + decimalSeparator + decimalDot));
 154
 155                     syncData();
 156                     adapter.model.checkTransactionSubmittable(adapter);
 157                 }
 158             }
 159         };
 160         tvDescription.addTextChangedListener(tw);
 161         tvAccount.addTextChangedListener(tw);
 162         tvAmount.addTextChangedListener(amountWatcher);
 163
 164         // FIXME: react on locale changes
 165         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
 166             tvAmount.setKeyListener(DigitsKeyListener.getInstance(Locale.getDefault(), true, true));
 167         else
 168             tvAmount.setKeyListener(
 169                     DigitsKeyListener.getInstance("0123456789+-" + decimalSeparator + decimalDot));
 170
 171         dateObserver = date -> {
 172             if (syncingData)
 173                 return;
 174             syncingData = true;
 175             try {
 176                 tvDate.setText(item.getFormattedDate());
 177             }
 178             finally {
 179                 syncingData = false;
 180             }
 181         };
 182         descriptionObserver = description -> {
 183             if (syncingData)
 184                 return;
 185             syncingData = true;
 186             try {
 187                 tvDescription.setText(description);
 188             }
 189             finally {
 190                 syncingData = false;
 191             }
 192         };
 193         hintObserver = hint -> {
 194             if (syncingData)
 195                 return;
 196             syncingData = true;
 197             try {
 198                 if (hint == null)
 199                     hint = tvAmount.getResources()
 200                                    .getString(R.string.zero_amount);
 201                 tvAmount.setHint(hint);
 202             }
 203             finally {
 204                 syncingData = false;
 205             }
 206         };
 207         editableObserver = this::setEditable;
 208         focusedAccountObserver = index -> {
 209             if ((index != null) && index.equals(getAdapterPosition())) {
 210                 switch (item.getType()) {
 211                     case generalData:
 212                         // bad idea - double pop-up, and not really necessary.
 213                         // the user can tap the input to get the calendar
 214                         //if (!tvDate.hasFocus()) tvDate.requestFocus();
 215                         boolean focused = tvDescription.requestFocus();
 216                         tvDescription.dismissDropDown();
 217                         if (focused)
 218                             Misc.showSoftKeyboard(
 219                                     (NewTransactionActivity) tvDescription.getContext());
 220                         break;
 221                     case transactionRow:
 222                         focused = tvAccount.requestFocus();
 223                         tvAccount.dismissDropDown();
 224                         if (focused)
 225                             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 226
 227                         break;
 228                 }
 229             }
 230         };
 231         accountCountObserver = count -> {
 232             final int adapterPosition = getAdapterPosition();
 233             final int layoutPosition = getLayoutPosition();
 234             Logger.debug("holder",
 235                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 236                             adapterPosition, layoutPosition, item.getType()
 237                                                                  .toString()
 238                                                                  .concat(item.getType() ==
 239                                                                          NewTransactionModel.ItemType.transactionRow
 240                                                                          ? String.format(Locale.US,
 241                                                                          "'%s'=%s",
 242                                                                          item.getAccount()
 243                                                                              .getAccountName(),
 244                                                                          item.getAccount()
 245                                                                              .isAmountSet()
 246                                                                          ? String.format(Locale.US,
 247                                                                                  "%.2f",
 248                                                                                  item.getAccount()
 249                                                                                      .getAmount())
 250                                                                          : "unset") : "")));
 251             if (adapterPosition == count)
 252                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 253             else
 254                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 255         };
 256     }
 257     private void setEditable(Boolean editable) {
 258         tvDate.setEnabled(editable);
 259         tvDescription.setEnabled(editable);
 260         tvAccount.setEnabled(editable);
 261         tvAmount.setEnabled(editable);
 262     }
 263     private void beginUpdates() {
 264         if (inUpdate)
 265             throw new RuntimeException("Already in update mode");
 266         inUpdate = true;
 267     }
 268     private void endUpdates() {
 269         if (!inUpdate)
 270             throw new RuntimeException("Not in update mode");
 271         inUpdate = false;
 272     }
 273     /**
 274      * syncData()
 275      * <p>
 276      * Stores the data from the UI elements into the model item
 277      */
 278     private void syncData() {
 279         if (item == null)
 280             return;
 281
 282         if (syncingData) {
 283             Logger.debug("new-trans", "skipping syncData() loop");
 284             return;
 285         }
 286
 287         syncingData = true;
 288
 289         try {
 290             switch (item.getType()) {
 291                 case generalData:
 292                     item.setDate(String.valueOf(tvDate.getText()));
 293                     item.setDescription(String.valueOf(tvDescription.getText()));
 294                     break;
 295                 case transactionRow:
 296                     item.getAccount()
 297                         .setAccountName(String.valueOf(tvAccount.getText()));
 298
 299                     // TODO: handle multiple amounts
 300                     String amount = String.valueOf(tvAmount.getText());
 301                     amount = amount.trim();
 302
 303                     if (!amount.isEmpty()) {
 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'",
 313                                     amount));
 314                             item.getAccount()
 315                                 .resetAmount();
 316                         }
 317                     }
 318                     else
 319                         item.getAccount()
 320                             .resetAmount();
 321
 322                     break;
 323                 case bottomFiller:
 324                     throw new RuntimeException("Should not happen");
 325             }
 326         }
 327         finally {
 328             syncingData = false;
 329         }
 330     }
 331     private void pickTransactionDate() {
 332         DatePickerFragment picker = new DatePickerFragment();
 333         picker.setOnDatePickedListener(this);
 334         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 335                 "datePicker");
 336     }
 337     /**
 338      * setData
 339      *
 340      * @param item updates the UI elements with the data from the model item
 341      */
 342     @SuppressLint("DefaultLocale")
 343     public void setData(NewTransactionModel.Item item) {
 344         beginUpdates();
 345         try {
 346             if (this.item != null && !this.item.equals(item)) {
 347                 this.item.stopObservingDate(dateObserver);
 348                 this.item.stopObservingDescription(descriptionObserver);
 349                 this.item.stopObservingAmountHint(hintObserver);
 350                 this.item.stopObservingEditableFlag(editableObserver);
 351                 this.item.getModel()
 352                          .stopObservingFocusedItem(focusedAccountObserver);
 353                 this.item.getModel()
 354                          .stopObservingAccountCount(accountCountObserver);
 355
 356                 this.item = null;
 357             }
 358
 359             switch (item.getType()) {
 360                 case generalData:
 361                     tvDate.setText(item.getFormattedDate());
 362                     tvDescription.setText(item.getDescription());
 363                     lHead.setVisibility(View.VISIBLE);
 364                     lAccount.setVisibility(View.GONE);
 365                     lPadding.setVisibility(View.GONE);
 366                     setEditable(true);
 367                     break;
 368                 case transactionRow:
 369                     LedgerTransactionAccount acc = item.getAccount();
 370                     tvAccount.setText(acc.getAccountName());
 371                     tvAmount.setText(
 372                             acc.isAmountSet() ? String.format("%1.2f", acc.getAmount()) : "");
 373                     lHead.setVisibility(View.GONE);
 374                     lAccount.setVisibility(View.VISIBLE);
 375                     lPadding.setVisibility(View.GONE);
 376                     setEditable(true);
 377                     break;
 378                 case bottomFiller:
 379                     lHead.setVisibility(View.GONE);
 380                     lAccount.setVisibility(View.GONE);
 381                     lPadding.setVisibility(View.VISIBLE);
 382                     setEditable(false);
 383                     break;
 384             }
 385
 386             if (this.item == null) { // was null or has changed
 387                 this.item = item;
 388                 final NewTransactionActivity activity =
 389                         (NewTransactionActivity) tvDescription.getContext();
 390                 item.observeDate(activity, dateObserver);
 391                 item.observeDescription(activity, descriptionObserver);
 392                 item.observeAmountHint(activity, hintObserver);
 393                 item.observeEditableFlag(activity, editableObserver);
 394                 item.getModel()
 395                     .observeFocusedItem(activity, focusedAccountObserver);
 396                 item.getModel()
 397                     .observeAccountCount(activity, accountCountObserver);
 398             }
 399         }
 400         finally {
 401             endUpdates();
 402         }
 403     }
 404     @Override
 405     public void onDatePicked(int year, int month, int day) {
 406         final Calendar c = GregorianCalendar.getInstance();
 407         c.set(year, month, day);
 408         item.setDate(c.getTime());
 409         boolean focused = tvDescription.requestFocus();
 410         if (focused)
 411             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 412
 413     }
 414     @Override
 415     public void descriptionSelected(String description) {
 416         tvAccount.setText(description);
 417         tvAmount.requestFocus(View.FOCUS_FORWARD);
 418     }
 419 }