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