app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionActivity.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.Bundle;
  22 import android.support.design.widget.BaseTransientBottomBar;
  23 import android.support.design.widget.FloatingActionButton;
  24 import android.support.design.widget.Snackbar;
  25 import android.support.v4.app.DialogFragment;
  26 import android.support.v7.app.AppCompatActivity;
  27 import android.support.v7.widget.Toolbar;
  28 import android.text.Editable;
  29 import android.text.InputType;
  30 import android.text.TextWatcher;
  31 import android.util.Log;
  32 import android.util.TypedValue;
  33 import android.view.Gravity;
  34 import android.view.Menu;
  35 import android.view.MenuItem;
  36 import android.view.MotionEvent;
  37 import android.view.View;
  38 import android.view.inputmethod.EditorInfo;
  39 import android.widget.AutoCompleteTextView;
  40 import android.widget.EditText;
  41 import android.widget.ProgressBar;
  42 import android.widget.TableLayout;
  43 import android.widget.TableRow;
  44 import android.widget.TextView;
  45 import android.widget.Toast;
  46
  47 import net.ktnx.mobileledger.R;
  48 import net.ktnx.mobileledger.async.SaveTransactionTask;
  49 import net.ktnx.mobileledger.async.TaskCallback;
  50 import net.ktnx.mobileledger.model.Data;
  51 import net.ktnx.mobileledger.model.LedgerTransaction;
  52 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  53 import net.ktnx.mobileledger.ui.DatePickerFragment;
  54 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  55 import net.ktnx.mobileledger.utils.Globals;
  56 import net.ktnx.mobileledger.utils.MLDB;
  57
  58 import java.text.ParseException;
  59 import java.util.Date;
  60 import java.util.Objects;
  61
  62 /*
  63  * TODO: nicer progress while transaction is submitted
  64  * TODO: reports
  65  * TODO: get rid of the custom session/cookie and auth code?
  66  *         (the last problem with the POST was the missing content-length header)
  67  * TODO: nicer swiping removal with visual feedback
  68  * TODO: setup wizard
  69  * TODO: update accounts/check settings upon change of backend settings
  70  *  */
  71
  72 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  73     private static SaveTransactionTask saver;
  74     private TableLayout table;
  75     private ProgressBar progress;
  76     private FloatingActionButton fab;
  77     private TextView tvDate;
  78     private AutoCompleteTextView tvDescription;
  79     private static boolean isZero(float f) {
  80         return (f < 0.005) && (f > -0.005);
  81     }
  82     @Override
  83     protected void onCreate(Bundle savedInstanceState) {
  84         super.onCreate(savedInstanceState);
  85         setContentView(R.layout.activity_new_transaction);
  86         Toolbar toolbar = findViewById(R.id.toolbar);
  87         setSupportActionBar(toolbar);
  88         toolbar.setSubtitle(Data.profile.get().getName());
  89
  90         tvDate = findViewById(R.id.new_transaction_date);
  91         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
  92             if (hasFocus) pickTransactionDate(v);
  93         });
  94         tvDescription = findViewById(R.id.new_transaction_description);
  95         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
  96                 "description", false, findViewById(R.id.new_transaction_acc_1));
  97         hookTextChangeListener(tvDescription);
  98
  99         progress = findViewById(R.id.save_transaction_progress);
 100         fab = findViewById(R.id.fab);
 101         fab.setOnClickListener(v -> saveTransaction());
 102
 103         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 104         table = findViewById(R.id.new_transaction_accounts_table);
 105         for (int i = 0; i < table.getChildCount(); i++) {
 106             TableRow row = (TableRow) table.getChildAt(i);
 107             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 108             TextView tvAmount = (TextView) row.getChildAt(1);
 109             hookSwipeListener(row);
 110             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 111                     tvAmount);
 112             hookTextChangeListener(tvAccountName);
 113             hookTextChangeListener(tvAmount);
 114 //            Log.d("swipe", "hooked to row "+i);
 115         }
 116     }
 117
 118     @Override
 119     public void finish() {
 120         super.finish();
 121         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 122     }
 123
 124     @Override
 125     public boolean onOptionsItemSelected(MenuItem item) {
 126         switch (item.getItemId()) {
 127             case android.R.id.home:
 128                 finish();
 129                 return true;
 130         }
 131         return super.onOptionsItemSelected(item);
 132     }
 133     @Override
 134     protected void onStart() {
 135         super.onStart();
 136         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 137     }
 138     public void saveTransaction() {
 139         if (fab != null) fab.setEnabled(false);
 140         toggleAllEditing(false);
 141         progress.setVisibility(View.VISIBLE);
 142         try {
 143
 144             saver = new SaveTransactionTask(this);
 145
 146             String dateString = tvDate.getText().toString();
 147             Date date;
 148             if (dateString.isEmpty()) date = new Date();
 149             else date = Globals.parseLedgerDate(dateString);
 150             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 151
 152             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 153             for (int i = 0; i < table.getChildCount(); i++) {
 154                 TableRow row = (TableRow) table.getChildAt(i);
 155                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 156                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 157                 LedgerTransactionAccount item =
 158                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 159                                          : new LedgerTransactionAccount(acc);
 160
 161                 tr.addAccount(item);
 162             }
 163             saver.execute(tr);
 164         }
 165         catch (ParseException e) {
 166             Log.d("new-transaction", "Parse error", e);
 167             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 168                     Toast.LENGTH_LONG).show();
 169             tvDate.requestFocus();
 170
 171             progress.setVisibility(View.GONE);
 172             toggleAllEditing(true);
 173             if (fab != null) fab.setEnabled(true);
 174         }
 175         catch (Exception e) {
 176             Log.d("new-transaction", "Unknown error", e);
 177
 178             progress.setVisibility(View.GONE);
 179             toggleAllEditing(true);
 180             if (fab != null) fab.setEnabled(true);
 181         }
 182     }
 183     private void toggleAllEditing(boolean enabled) {
 184         tvDate.setEnabled(enabled);
 185         tvDescription.setEnabled(enabled);
 186         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 187         for (int i = 0; i < table.getChildCount(); i++) {
 188             TableRow row = (TableRow) table.getChildAt(i);
 189             for (int j = 0; j < row.getChildCount(); j++) {
 190                 row.getChildAt(j).setEnabled(enabled);
 191             }
 192         }
 193     }
 194     private void hookSwipeListener(final TableRow row) {
 195         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 196             public void onSwipeLeft() {
 197 //                Log.d("swipe", "LEFT" + row.getId());
 198                 if (table.getChildCount() > 2) {
 199                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 200                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 201                     TextView prev_amt =
 202                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 203                     TextView next_acc =
 204                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 205
 206                     if (next_acc == null) {
 207                         prev_amt.setNextFocusRightId(R.id.none);
 208                         prev_amt.setNextFocusForwardId(R.id.none);
 209                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 210                     }
 211                     else {
 212                         prev_amt.setNextFocusRightId(next_acc.getId());
 213                         prev_amt.setNextFocusForwardId(next_acc.getId());
 214                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 215                     }
 216
 217                     if (row.hasFocus()) {
 218                         if (next_acc != null) next_acc.requestFocus();
 219                         else prev_amt.requestFocus();
 220                     }
 221
 222                     table.removeView(row);
 223                     check_transaction_submittable();
 224 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 225                 }
 226                 else {
 227                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 228                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 229                 }
 230             }
 231             //            @Override
 232 //            public boolean performClick(View view, MotionEvent m) {
 233 //                return true;
 234 //            }
 235             public boolean onTouch(View view, MotionEvent m) {
 236                 return gestureDetector.onTouchEvent(m);
 237             }
 238         });
 239     }
 240
 241     public boolean onCreateOptionsMenu(Menu menu) {
 242         // Inflate the menu; this adds items to the action bar if it is present.
 243         getMenuInflater().inflate(R.menu.new_transaction, menu);
 244
 245         check_transaction_submittable();
 246
 247         return true;
 248     }
 249
 250     public void pickTransactionDate(View view) {
 251         DialogFragment picker = new DatePickerFragment();
 252         picker.show(getSupportFragmentManager(), "datePicker");
 253     }
 254
 255     public int dp2px(float dp) {
 256         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 257                 getResources().getDisplayMetrics()));
 258     }
 259     private void hookTextChangeListener(final TextView view) {
 260         view.addTextChangedListener(new TextWatcher() {
 261             @Override
 262             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 263
 264             }
 265
 266             @Override
 267             public void onTextChanged(CharSequence s, int start, int before, int count) {
 268
 269             }
 270
 271             @Override
 272             public void afterTextChanged(Editable s) {
 273 //                Log.d("input", "text changed");
 274                 check_transaction_submittable();
 275             }
 276         });
 277
 278     }
 279     private void doAddAccountRow(boolean focus) {
 280         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 281         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 282                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 283         acc.setHint(R.string.new_transaction_account_hint);
 284         acc.setWidth(0);
 285         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 286                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 287         acc.setSingleLine(true);
 288
 289         final EditText amt = new EditText(this);
 290         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 291                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 292         amt.setHint(R.string.new_transaction_amount_hint);
 293         amt.setWidth(0);
 294         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 295                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 296         amt.setMinWidth(dp2px(40));
 297         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 298         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 299
 300         // forward navigation support
 301         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 302         final TextView last_amt = (TextView) last_row.getChildAt(1);
 303         last_amt.setNextFocusForwardId(acc.getId());
 304         last_amt.setNextFocusRightId(acc.getId());
 305         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 306         acc.setNextFocusForwardId(amt.getId());
 307         acc.setNextFocusRightId(amt.getId());
 308
 309         final TableRow row = new TableRow(this);
 310         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 311                 TableRow.LayoutParams.MATCH_PARENT));
 312         row.setGravity(Gravity.BOTTOM);
 313         row.addView(acc);
 314         row.addView(amt);
 315         table.addView(row);
 316
 317         if (focus) acc.requestFocus();
 318
 319         hookSwipeListener(row);
 320         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt);
 321         hookTextChangeListener(acc);
 322         hookTextChangeListener(amt);
 323     }
 324     public void addTransactionAccountFromMenu(MenuItem item) {
 325         doAddAccountRow(true);
 326     }
 327     public void resetTransactionFromMenu(MenuItem item) {
 328         resetForm();
 329     }
 330     public void saveTransactionFromMenu(MenuItem item) {
 331         saveTransaction();
 332     }
 333     // rules:
 334     // 1) at least two account names
 335     // 2) each amount must have account name
 336     // 3) amounts must balance to 0, or
 337     // 3a) there must be exactly one empty amount
 338     // 4) empty accounts with empty amounts are ignored
 339     // 5) a row with an empty account name or empty amount is guaranteed to exist
 340     @SuppressLint("DefaultLocale")
 341     private void check_transaction_submittable() {
 342         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 343         int accounts = 0;
 344         int accounts_with_values = 0;
 345         int amounts = 0;
 346         int amounts_with_accounts = 0;
 347         int empty_rows = 0;
 348         TextView empty_amount = null;
 349         boolean single_empty_amount = false;
 350         boolean single_empty_amount_has_account = false;
 351         float running_total = 0f;
 352         boolean have_description =
 353                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 354                         .isEmpty();
 355
 356         try {
 357             for (int i = 0; i < table.getChildCount(); i++) {
 358                 TableRow row = (TableRow) table.getChildAt(i);
 359
 360                 TextView acc_name_v = (TextView) row.getChildAt(0);
 361                 TextView amount_v = (TextView) row.getChildAt(1);
 362                 String amt = String.valueOf(amount_v.getText());
 363                 String acc_name = String.valueOf(acc_name_v.getText());
 364                 acc_name = acc_name.trim();
 365
 366                 if (!acc_name.isEmpty()) {
 367                     accounts++;
 368
 369                     if (!amt.isEmpty()) {
 370                         accounts_with_values++;
 371                     }
 372                 }
 373                 else empty_rows++;
 374
 375                 if (amt.isEmpty()) {
 376                     amount_v.setHint(String.format("%1.2f", 0f));
 377                     if (empty_amount == null) {
 378                         empty_amount = amount_v;
 379                         single_empty_amount = true;
 380                         single_empty_amount_has_account = !acc_name.isEmpty();
 381                     }
 382                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 383                 }
 384                 else {
 385                     amounts++;
 386                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 387                     running_total += Float.valueOf(amt);
 388                 }
 389             }
 390
 391             if ((empty_rows == 0) &&
 392                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 393             {
 394                 doAddAccountRow(false);
 395             }
 396
 397             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 398                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 399                                                "single_empty_with_acc=%s", accounts,
 400                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 401                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 402
 403             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 404                 (amounts_with_accounts == amounts) &&
 405                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 406             {
 407                 if (fab != null) {
 408                     fab.show();
 409                     fab.setEnabled(true);
 410                 }
 411             }
 412             else {
 413                 if (fab != null) fab.hide();
 414             }
 415
 416             if (single_empty_amount) {
 417                 empty_amount.setHint(String.format("%1.2f",
 418                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 419             }
 420
 421         }
 422         catch (NumberFormatException e) {
 423             if (fab != null) fab.hide();
 424         }
 425         catch (Exception e) {
 426             e.printStackTrace();
 427             if (fab != null) fab.hide();
 428         }
 429     }
 430
 431     @Override
 432     public void done(String error) {
 433         progress.setVisibility(View.INVISIBLE);
 434         Log.d("visuals", "hiding progress");
 435
 436         if (error == null) resetForm();
 437         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 438                 BaseTransientBottomBar.LENGTH_LONG).show();
 439
 440         toggleAllEditing(true);
 441         check_transaction_submittable();
 442     }
 443
 444     private void resetForm() {
 445         tvDate.setText("");
 446         tvDescription.setText("");
 447
 448         tvDescription.requestFocus();
 449
 450         while (table.getChildCount() > 2) {
 451             table.removeViewAt(2);
 452         }
 453         for (int i = 0; i < 2; i++) {
 454             TableRow tr = (TableRow) table.getChildAt(i);
 455             if (tr == null) break;
 456
 457             ((TextView) tr.getChildAt(0)).setText("");
 458             ((TextView) tr.getChildAt(1)).setText("");
 459         }
 460     }
 461 }