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

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of Mobile-Ledger.
   4  * Mobile-Ledger 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  * Mobile-Ledger 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 Mobile-Ledger. 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.Snackbar;
  24 import android.support.v4.app.DialogFragment;
  25 import android.support.v7.app.AppCompatActivity;
  26 import android.support.v7.widget.Toolbar;
  27 import android.text.Editable;
  28 import android.text.InputType;
  29 import android.text.TextWatcher;
  30 import android.util.Log;
  31 import android.util.TypedValue;
  32 import android.view.Gravity;
  33 import android.view.Menu;
  34 import android.view.MenuItem;
  35 import android.view.MotionEvent;
  36 import android.view.View;
  37 import android.view.inputmethod.EditorInfo;
  38 import android.widget.AutoCompleteTextView;
  39 import android.widget.EditText;
  40 import android.widget.ProgressBar;
  41 import android.widget.TableLayout;
  42 import android.widget.TableRow;
  43 import android.widget.TextView;
  44 import android.widget.Toast;
  45
  46 import net.ktnx.mobileledger.R;
  47 import net.ktnx.mobileledger.async.SaveTransactionTask;
  48 import net.ktnx.mobileledger.async.TaskCallback;
  49 import net.ktnx.mobileledger.model.LedgerTransaction;
  50 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  51 import net.ktnx.mobileledger.ui.DatePickerFragment;
  52 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  53 import net.ktnx.mobileledger.utils.Globals;
  54 import net.ktnx.mobileledger.utils.MLDB;
  55
  56 import java.text.ParseException;
  57 import java.util.Date;
  58 import java.util.Objects;
  59
  60 /*
  61  * TODO: nicer progress while transaction is submitted
  62  * TODO: reports
  63  * TODO: get rid of the custom session/cookie and auth code?
  64  *         (the last problem with the POST was the missing content-length header)
  65  * TODO: app icon
  66  * TODO: nicer swiping removal with visual feedback
  67  * TODO: setup wizard
  68  * TODO: update accounts/check settings upon change of backend settings
  69  *  */
  70
  71 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  72     private static SaveTransactionTask saver;
  73     private TableLayout table;
  74     private ProgressBar progress;
  75     private TextView tvDate;
  76     private AutoCompleteTextView tvDescription;
  77     private MenuItem mSave;
  78     private static boolean isZero(float f) {
  79         return (f < 0.005) && (f > -0.005);
  80     }
  81     @Override
  82     protected void onCreate(Bundle savedInstanceState) {
  83         super.onCreate(savedInstanceState);
  84         setContentView(R.layout.activity_new_transaction);
  85         Toolbar toolbar = findViewById(R.id.toolbar);
  86         setSupportActionBar(toolbar);
  87
  88         tvDate = findViewById(R.id.new_transaction_date);
  89         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
  90             if (hasFocus) pickTransactionDate(v);
  91         });
  92         tvDescription = findViewById(R.id.new_transaction_description);
  93         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
  94                 "description", false, findViewById(R.id.new_transaction_acc_1));
  95         hookTextChangeListener(tvDescription);
  96
  97         progress = findViewById(R.id.save_transaction_progress);
  98
  99         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 100         table = findViewById(R.id.new_transaction_accounts_table);
 101         for (int i = 0; i < table.getChildCount(); i++) {
 102             TableRow row = (TableRow) table.getChildAt(i);
 103             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 104             TextView tvAmount = (TextView) row.getChildAt(1);
 105             hookSwipeListener(row);
 106             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 107                     tvAmount);
 108             hookTextChangeListener(tvAccountName);
 109             hookTextChangeListener(tvAmount);
 110 //            Log.d("swipe", "hooked to row "+i);
 111         }
 112     }
 113
 114     @Override
 115     public void finish() {
 116         super.finish();
 117         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 118     }
 119
 120     @Override
 121     public boolean onOptionsItemSelected(MenuItem item) {
 122         switch (item.getItemId()) {
 123             case android.R.id.home:
 124                 finish();
 125                 return true;
 126         }
 127         return super.onOptionsItemSelected(item);
 128     }
 129     @Override
 130     protected void onStart() {
 131         super.onStart();
 132         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 133     }
 134     public void saveTransaction() {
 135         if (mSave != null) mSave.setVisible(false);
 136         toggleAllEditing(false);
 137         progress.setVisibility(View.VISIBLE);
 138         try {
 139
 140             saver = new SaveTransactionTask(this);
 141
 142             String dateString = tvDate.getText().toString();
 143             Date date;
 144             if (dateString.isEmpty()) date = new Date();
 145             else date = Globals.parseLedgerDate(dateString);
 146             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 147
 148             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 149             for (int i = 0; i < table.getChildCount(); i++) {
 150                 TableRow row = (TableRow) table.getChildAt(i);
 151                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 152                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 153                 LedgerTransactionAccount item =
 154                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 155                                          : new LedgerTransactionAccount(acc);
 156
 157                 tr.addAccount(item);
 158             }
 159             saver.execute(tr);
 160         }
 161         catch (ParseException e) {
 162             Log.d("new-transaction", "Parse error", e);
 163             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 164                     Toast.LENGTH_LONG).show();
 165             tvDate.requestFocus();
 166
 167             progress.setVisibility(View.GONE);
 168             toggleAllEditing(true);
 169             if (mSave != null) mSave.setVisible(true);
 170         }
 171         catch (Exception e) {
 172             Log.d("new-transaction", "Unknown error", e);
 173
 174             progress.setVisibility(View.GONE);
 175             toggleAllEditing(true);
 176             if (mSave != null) mSave.setVisible(true);
 177         }
 178     }
 179     private void toggleAllEditing(boolean enabled) {
 180         tvDate.setEnabled(enabled);
 181         tvDescription.setEnabled(enabled);
 182         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 183         for (int i = 0; i < table.getChildCount(); i++) {
 184             TableRow row = (TableRow) table.getChildAt(i);
 185             for (int j = 0; j < row.getChildCount(); j++) {
 186                 row.getChildAt(j).setEnabled(enabled);
 187             }
 188         }
 189     }
 190     private void hookSwipeListener(final TableRow row) {
 191         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 192             public void onSwipeLeft() {
 193 //                Log.d("swipe", "LEFT" + row.getId());
 194                 if (table.getChildCount() > 2) {
 195                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 196                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 197                     TextView prev_amt =
 198                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 199                     TextView next_acc =
 200                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 201
 202                     if (next_acc == null) {
 203                         prev_amt.setNextFocusRightId(R.id.none);
 204                         prev_amt.setNextFocusForwardId(R.id.none);
 205                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 206                     }
 207                     else {
 208                         prev_amt.setNextFocusRightId(next_acc.getId());
 209                         prev_amt.setNextFocusForwardId(next_acc.getId());
 210                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 211                     }
 212
 213                     if (row.hasFocus()) {
 214                         if (next_acc != null) next_acc.requestFocus();
 215                         else prev_amt.requestFocus();
 216                     }
 217
 218                     table.removeView(row);
 219                     check_transaction_submittable();
 220 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 221                 }
 222                 else {
 223                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 224                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 225                 }
 226             }
 227             //            @Override
 228 //            public boolean performClick(View view, MotionEvent m) {
 229 //                return true;
 230 //            }
 231             public boolean onTouch(View view, MotionEvent m) {
 232                 return gestureDetector.onTouchEvent(m);
 233             }
 234         });
 235     }
 236
 237     public boolean onCreateOptionsMenu(Menu menu) {
 238         // Inflate the menu; this adds items to the action bar if it is present.
 239         getMenuInflater().inflate(R.menu.new_transaction, menu);
 240         mSave = menu.findItem(R.id.action_submit_transaction);
 241         if (mSave == null) throw new AssertionError();
 242
 243         check_transaction_submittable();
 244
 245         return true;
 246     }
 247
 248     public void pickTransactionDate(View view) {
 249         DialogFragment picker = new DatePickerFragment();
 250         picker.show(getSupportFragmentManager(), "datePicker");
 251     }
 252
 253     public int dp2px(float dp) {
 254         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 255                 getResources().getDisplayMetrics()));
 256     }
 257     private void hookTextChangeListener(final TextView view) {
 258         view.addTextChangedListener(new TextWatcher() {
 259             @Override
 260             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 261
 262             }
 263
 264             @Override
 265             public void onTextChanged(CharSequence s, int start, int before, int count) {
 266
 267             }
 268
 269             @Override
 270             public void afterTextChanged(Editable s) {
 271 //                Log.d("input", "text changed");
 272                 check_transaction_submittable();
 273             }
 274         });
 275
 276     }
 277     private void doAddAccountRow(boolean focus) {
 278         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 279         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 280                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 281         acc.setHint(R.string.new_transaction_account_hint);
 282         acc.setWidth(0);
 283         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 284                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 285         acc.setSingleLine(true);
 286
 287         final EditText amt = new EditText(this);
 288         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 289                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 290         amt.setHint(R.string.new_transaction_amount_hint);
 291         amt.setWidth(0);
 292         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 293                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 294         amt.setMinWidth(dp2px(40));
 295         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 296         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 297
 298         // forward navigation support
 299         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 300         final TextView last_amt = (TextView) last_row.getChildAt(1);
 301         last_amt.setNextFocusForwardId(acc.getId());
 302         last_amt.setNextFocusRightId(acc.getId());
 303         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 304         acc.setNextFocusForwardId(amt.getId());
 305         acc.setNextFocusRightId(amt.getId());
 306
 307         final TableRow row = new TableRow(this);
 308         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 309                 TableRow.LayoutParams.MATCH_PARENT));
 310         row.setGravity(Gravity.BOTTOM);
 311         row.addView(acc);
 312         row.addView(amt);
 313         table.addView(row);
 314
 315         if (focus) acc.requestFocus();
 316
 317         hookSwipeListener(row);
 318         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt);
 319         hookTextChangeListener(acc);
 320         hookTextChangeListener(amt);
 321     }
 322     public void addTransactionAccountFromMenu(MenuItem item) {
 323         doAddAccountRow(true);
 324     }
 325     public void resetTransactionFromMenu(MenuItem item) {
 326         resetForm();
 327     }
 328     public void saveTransactionFromMenu(MenuItem item) {
 329         saveTransaction();
 330     }
 331     // rules:
 332     // 1) at least two account names
 333     // 2) each amount must have account name
 334     // 3) amounts must balance to 0, or
 335     // 3a) there must be exactly one empty amount
 336     // 4) empty accounts with empty amounts are ignored
 337     // 5) a row with an empty account name or empty amount is guaranteed to exist
 338     @SuppressLint("DefaultLocale")
 339     private void check_transaction_submittable() {
 340         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 341         int accounts = 0;
 342         int accounts_with_values = 0;
 343         int amounts = 0;
 344         int amounts_with_accounts = 0;
 345         int empty_rows = 0;
 346         TextView empty_amount = null;
 347         boolean single_empty_amount = false;
 348         boolean single_empty_amount_has_account = false;
 349         float running_total = 0f;
 350         boolean have_description =
 351                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 352                         .isEmpty();
 353
 354         try {
 355             for (int i = 0; i < table.getChildCount(); i++) {
 356                 TableRow row = (TableRow) table.getChildAt(i);
 357
 358                 TextView acc_name_v = (TextView) row.getChildAt(0);
 359                 TextView amount_v = (TextView) row.getChildAt(1);
 360                 String amt = String.valueOf(amount_v.getText());
 361                 String acc_name = String.valueOf(acc_name_v.getText());
 362                 acc_name = acc_name.trim();
 363
 364                 if (!acc_name.isEmpty()) {
 365                     accounts++;
 366
 367                     if (!amt.isEmpty()) {
 368                         accounts_with_values++;
 369                     }
 370                 }
 371                 else empty_rows++;
 372
 373                 if (amt.isEmpty()) {
 374                     amount_v.setHint(String.format("%1.2f", 0f));
 375                     if (empty_amount == null) {
 376                         empty_amount = amount_v;
 377                         single_empty_amount = true;
 378                         single_empty_amount_has_account = !acc_name.isEmpty();
 379                     }
 380                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 381                 }
 382                 else {
 383                     amounts++;
 384                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 385                     running_total += Float.valueOf(amt);
 386                 }
 387             }
 388
 389             if ((empty_rows == 0) &&
 390                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 391             {
 392                 doAddAccountRow(false);
 393             }
 394
 395             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 396                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 397                                                "single_empty_with_acc=%s", accounts,
 398                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 399                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 400
 401             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 402                 (amounts_with_accounts == amounts) &&
 403                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 404             {
 405                 if (mSave != null) mSave.setVisible(true);
 406             }
 407             else if (mSave != null) mSave.setVisible(false);
 408
 409             if (single_empty_amount) {
 410                 empty_amount.setHint(String.format("%1.2f",
 411                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 412             }
 413
 414         }
 415         catch (NumberFormatException e) {
 416             if (mSave != null) mSave.setVisible(false);
 417         }
 418         catch (Exception e) {
 419             e.printStackTrace();
 420             if (mSave != null) mSave.setVisible(false);
 421         }
 422     }
 423
 424     @Override
 425     public void done(String error) {
 426         progress.setVisibility(View.INVISIBLE);
 427         Log.d("visuals", "hiding progress");
 428
 429         if (error == null) resetForm();
 430         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 431                 BaseTransientBottomBar.LENGTH_LONG).show();
 432
 433         toggleAllEditing(true);
 434         check_transaction_submittable();
 435     }
 436
 437     private void resetForm() {
 438         tvDate.setText("");
 439         tvDescription.setText("");
 440
 441         tvDescription.requestFocus();
 442
 443         while (table.getChildCount() > 2) {
 444             table.removeViewAt(2);
 445         }
 446         for (int i = 0; i < 2; i++) {
 447             TableRow tr = (TableRow) table.getChildAt(i);
 448             if (tr == null) break;
 449
 450             ((TextView) tr.getChildAt(0)).setText("");
 451             ((TextView) tr.getChildAt(1)).setText("");
 452         }
 453     }
 454 }