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

   1 package net.ktnx.mobileledger;
   2
   3 import android.annotation.SuppressLint;
   4 import android.annotation.TargetApi;
   5 import android.database.Cursor;
   6 import android.database.MatrixCursor;
   7 import android.database.sqlite.SQLiteDatabase;
   8 import android.os.Build;
   9 import android.os.Bundle;
  10 import android.preference.PreferenceManager;
  11 import android.provider.FontsContract;
  12 import android.support.design.widget.BaseTransientBottomBar;
  13 import android.support.design.widget.Snackbar;
  14 import android.support.v4.app.DialogFragment;
  15 import android.support.v7.app.AppCompatActivity;
  16 import android.support.v7.widget.Toolbar;
  17 import android.text.Editable;
  18 import android.text.InputType;
  19 import android.text.TextWatcher;
  20 import android.util.Log;
  21 import android.util.TypedValue;
  22 import android.view.Gravity;
  23 import android.view.Menu;
  24 import android.view.MenuItem;
  25 import android.view.MotionEvent;
  26 import android.view.View;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.AutoCompleteTextView;
  29 import android.widget.EditText;
  30 import android.widget.FilterQueryProvider;
  31 import android.widget.ProgressBar;
  32 import android.widget.SimpleCursorAdapter;
  33 import android.widget.TableLayout;
  34 import android.widget.TableRow;
  35 import android.widget.TextView;
  36
  37 import java.util.Date;
  38 import java.util.Objects;
  39
  40 /*
  41  * TODO: auto-fill of transaction description
  42  *       if Android O's implementation won't work, add a custom one
  43  * TODO: nicer progress while transaction is submitted
  44  * TODO: latest transactions, maybe with browsing further in the past?
  45  * TODO: reports
  46  * TODO: get rid of the custom session/cookie and auth code?
  47  *         (the last problem with the POST was the missing content-length header)
  48  * TODO: app icon
  49  * TODO: nicer swiping removal with visual feedback
  50  * TODO: setup wizard
  51  * TODO: update accounts/check settings upon change of backend settings
  52  *  */
  53
  54 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  55     private TableLayout table;
  56     private ProgressBar progress;
  57     private TextView text_date;
  58     private AutoCompleteTextView text_descr;
  59     private static SaveTransactionTask saver;
  60     private MenuItem mSave;
  61
  62     @Override
  63     protected void onCreate(Bundle savedInstanceState) {
  64         super.onCreate(savedInstanceState);
  65         setContentView(R.layout.activity_new_transaction);
  66         Toolbar toolbar = findViewById(R.id.toolbar);
  67         setSupportActionBar(toolbar);
  68
  69         text_date = findViewById(R.id.new_transaction_date);
  70         text_date.setOnFocusChangeListener(new View.OnFocusChangeListener() {
  71             @Override
  72             public
  73             void onFocusChange(View v, boolean hasFocus) {
  74                 if (hasFocus) pickTransactionDate(v);
  75             }
  76         });
  77         text_descr = findViewById(R.id.new_transaction_description);
  78         hook_autocompletion_adapter(text_descr, MobileLedgerDB.DESCRIPTION_HISTORY_TABLE, "description");
  79         hook_text_change_listener(text_descr);
  80
  81         progress = findViewById(R.id.save_transaction_progress);
  82
  83         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  84         table = findViewById(R.id.new_transaction_accounts_table);
  85         for (int i = 0; i < table.getChildCount(); i++) {
  86             TableRow row = (TableRow) table.getChildAt(i);
  87             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
  88             TextView amount_view = (TextView) row.getChildAt(1);
  89             hook_swipe_listener(row);
  90             hook_autocompletion_adapter(acc_name_view, MobileLedgerDB.ACCOUNTS_TABLE, "name");
  91             hook_text_change_listener(acc_name_view);
  92             hook_text_change_listener(amount_view);
  93 //            Log.d("swipe", "hooked to row "+i);
  94         }
  95     }
  96
  97     @Override
  98     protected
  99     void onStart() {
 100         super.onStart();
 101         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
 102     }
 103
 104     @Override
 105     public void finish() {
 106         super.finish();
 107         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 108     }
 109
 110     @Override
 111     public boolean onOptionsItemSelected(MenuItem item) {
 112         switch (item.getItemId()) {
 113             case android.R.id.home:
 114                 finish();
 115                 return true;
 116         }
 117         return super.onOptionsItemSelected(item);
 118     }
 119
 120     public void save_transaction() {
 121         if (mSave != null) mSave.setVisible(false);
 122         toggle_all_editing(false);
 123         progress.setVisibility(View.VISIBLE);
 124
 125         saver = new SaveTransactionTask(this);
 126
 127         saver.setPref(PreferenceManager.getDefaultSharedPreferences(this));
 128         String date = text_date.getText().toString();
 129         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 130         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 131
 132         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 133         for ( int i = 0; i < table.getChildCount(); i++ ) {
 134             TableRow row = (TableRow) table.getChildAt(i);
 135             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 136             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 137             LedgerTransactionItem item =
 138                     amt.length() > 0
 139                     ? new LedgerTransactionItem( acc, Float.parseFloat(amt))
 140                     : new LedgerTransactionItem( acc );
 141
 142             tr.add_item(item);
 143         }
 144         saver.execute(tr);
 145     }
 146
 147     private void toggle_all_editing(boolean enabled) {
 148         text_date.setEnabled(enabled);
 149         text_descr.setEnabled(enabled);
 150         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 151         for (int i = 0; i < table.getChildCount(); i++) {
 152             TableRow row = (TableRow) table.getChildAt(i);
 153             for (int j = 0; j < row.getChildCount(); j++) {
 154                 row.getChildAt(j).setEnabled(enabled);
 155             }
 156         }
 157     }
 158
 159     private void hook_swipe_listener(final TableRow row) {
 160         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 161             public void onSwipeLeft() {
 162 //                Log.d("swipe", "LEFT" + row.getId());
 163                 if (table.getChildCount() > 2) {
 164                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 165                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 166                     TextView prev_amt =
 167                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 168                     TextView next_acc =
 169                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 170
 171                     if (next_acc == null) {
 172                         prev_amt.setNextFocusRightId(R.id.none);
 173                         prev_amt.setNextFocusForwardId(R.id.none);
 174                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 175                     }
 176                     else {
 177                         prev_amt.setNextFocusRightId(next_acc.getId());
 178                         prev_amt.setNextFocusForwardId(next_acc.getId());
 179                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 180                     }
 181
 182                     if (row.hasFocus()) {
 183                         if (next_acc != null) next_acc.requestFocus();
 184                         else prev_amt.requestFocus();
 185                     }
 186
 187                     table.removeView(row);
 188                     check_transaction_submittable();
 189 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 190                 }
 191                 else {
 192                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 193                             .setAction("Action", null).show();
 194                 }
 195             }
 196 //            @Override
 197 //            public boolean performClick(View view, MotionEvent m) {
 198 //                return true;
 199 //            }
 200             public boolean onTouch(View view, MotionEvent m) {
 201                 return gestureDetector.onTouchEvent(m);
 202             }
 203         });
 204     }
 205
 206     private void hook_text_change_listener(final TextView view) {
 207         view.addTextChangedListener(new TextWatcher() {
 208             @Override
 209             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 210
 211             }
 212
 213             @Override
 214             public void onTextChanged(CharSequence s, int start, int before, int count) {
 215
 216             }
 217
 218             @Override
 219             public void afterTextChanged(Editable s) {
 220 //                Log.d("input", "text changed");
 221                 check_transaction_submittable();
 222             }
 223         });
 224
 225     }
 226
 227     @TargetApi(Build.VERSION_CODES.N)
 228     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 229         String[] from = {field};
 230         int[] to = {android.R.id.text1};
 231         SQLiteDatabase db = MobileLedgerDB.db;
 232
 233         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 234         adapter.setStringConversionColumn(1);
 235
 236         FilterQueryProvider provider = new FilterQueryProvider() {
 237             @Override
 238             public Cursor runQuery(CharSequence constraint) {
 239                 if (constraint == null) return null;
 240
 241                 String str = constraint.toString().toUpperCase();
 242                 Log.d("autocompletion", "Looking for "+str);
 243                 String[] col_names = {FontsContract.Columns._ID, field};
 244                 MatrixCursor c = new MatrixCursor(col_names);
 245
 246                 Cursor matches = db.rawQuery(String.format(
 247                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 248                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 249                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 250                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 251                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 252                         new String[]{str, str, str, str});
 253
 254                 try {
 255                     int i = 0;
 256                     while (matches.moveToNext()) {
 257                         String match = matches.getString(0);
 258                         int order = matches.getInt(1);
 259                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 260                         c.newRow().add(i++).add(match);
 261                     }
 262                 }
 263                 finally {
 264                     matches.close();
 265                 }
 266
 267                 return c;
 268
 269             }
 270         };
 271
 272         adapter.setFilterQueryProvider(provider);
 273
 274         view.setAdapter(adapter);
 275     }
 276
 277     public boolean onCreateOptionsMenu(Menu menu) {
 278         // Inflate the menu; this adds items to the action bar if it is present.
 279         getMenuInflater().inflate(R.menu.new_transaction, menu);
 280         mSave = menu.findItem(R.id.action_submit_transaction);
 281         if (mSave == null) throw new AssertionError();
 282
 283         check_transaction_submittable();
 284
 285         return true;
 286     }
 287
 288     public void pickTransactionDate(View view) {
 289         DialogFragment picker = new DatePickerFragment();
 290         picker.show(getSupportFragmentManager(), "datePicker");
 291     }
 292
 293     public int dp2px(float dp) {
 294         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 295     }
 296
 297     private void do_add_account_row(boolean focus) {
 298         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 299         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 300         acc.setHint(R.string.new_transaction_account_hint);
 301         acc.setWidth(0);
 302         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 303
 304         final EditText amt = new EditText(this);
 305         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 306                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 307         amt.setHint(R.string.new_transaction_amount_hint);
 308         amt.setWidth(0);
 309         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL );
 310         amt.setMinWidth(dp2px(40));
 311         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 312         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 313
 314         // forward navigation support
 315         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 316         final TextView last_amt = (TextView) last_row.getChildAt(1);
 317         last_amt.setNextFocusForwardId(acc.getId());
 318         last_amt.setNextFocusRightId(acc.getId());
 319         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 320         acc.setNextFocusForwardId(amt.getId());
 321         acc.setNextFocusRightId(amt.getId());
 322
 323         final TableRow row = new TableRow(this);
 324         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT));
 325         row.setGravity(Gravity.BOTTOM);
 326         row.addView(acc);
 327         row.addView(amt);
 328         table.addView(row);
 329
 330         if (focus) acc.requestFocus();
 331
 332         hook_swipe_listener(row);
 333         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 334         hook_text_change_listener(acc);
 335         hook_text_change_listener(amt);
 336     }
 337
 338     public void addTransactionAccountFromMenu(MenuItem item) {
 339         do_add_account_row(true);
 340     }
 341
 342     public
 343     void resetTransactionFromMenu(MenuItem item) {
 344         reset_form();
 345     }
 346
 347     public void saveTransactionFromMenu(MenuItem item) {
 348         save_transaction();
 349     }
 350
 351     private
 352     boolean is_zero(float f) {
 353         return (f < 0.005) && (f > -0.005);
 354     }
 355
 356     // rules:
 357     // 1) at least two account names
 358     // 2) each amount must have account name
 359     // 3) amounts must balance to 0, or
 360     // 3a) there must be exactly one empty amount
 361     // 4) empty accounts with empty amounts are ignored
 362     // 5) a row with an empty account name or empty amount is guaranteed to exist
 363     @SuppressLint("DefaultLocale")
 364     private void check_transaction_submittable() {
 365         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 366         int accounts = 0;
 367         int accounts_with_values = 0;
 368         int amounts = 0;
 369         int amounts_with_accounts = 0;
 370         int empty_rows = 0;
 371         TextView empty_amount = null;
 372         boolean single_empty_amount = false;
 373         boolean single_empty_amount_has_account = false;
 374         float running_total = 0f;
 375         boolean have_description =
 376                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 377                         .isEmpty();
 378
 379         try {
 380             for (int i = 0; i < table.getChildCount(); i++) {
 381                 TableRow row = (TableRow) table.getChildAt(i);
 382
 383                 TextView acc_name_v = (TextView) row.getChildAt(0);
 384                 TextView amount_v = (TextView) row.getChildAt(1);
 385                 String amt = String.valueOf(amount_v.getText());
 386                 String acc_name = String.valueOf(acc_name_v.getText());
 387                 acc_name = acc_name.trim();
 388
 389                 if (!acc_name.isEmpty()) {
 390                     accounts++;
 391
 392                     if (!amt.isEmpty()) {
 393                         accounts_with_values++;
 394                     }
 395                 }
 396                 else empty_rows++;
 397
 398                 if (amt.isEmpty()) {
 399                     amount_v.setHint(String.format("%1.2f", 0f));
 400                     if (empty_amount == null) {
 401                         empty_amount = amount_v;
 402                         single_empty_amount = true;
 403                         single_empty_amount_has_account = !acc_name.isEmpty();
 404                     }
 405                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 406                 }
 407                 else {
 408                     amounts++;
 409                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 410                     running_total += Float.valueOf(amt);
 411                 }
 412             }
 413
 414             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 415                     == amounts)))
 416             {
 417                 do_add_account_row(false);
 418             }
 419
 420             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, "
 421                             + "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, "
 422                             + "single_empty_with_acc=%s", accounts, accounts_with_values,
 423                     amounts_with_accounts, amounts, running_total,
 424                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 425
 426             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 427                     amounts_with_accounts == amounts) && (
 428                     single_empty_amount && single_empty_amount_has_account || is_zero(
 429                             running_total)))
 430             {
 431                 if (mSave != null) mSave.setVisible(true);
 432             }
 433             else if (mSave != null) mSave.setVisible(false);
 434
 435             if (single_empty_amount) {
 436                 empty_amount
 437                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 438             }
 439
 440         }
 441         catch (NumberFormatException e) {
 442             if (mSave != null) mSave.setVisible(false);
 443         }
 444         catch (Exception e) {
 445             e.printStackTrace();
 446             if (mSave != null) mSave.setVisible(false);
 447         }
 448     }
 449
 450     @Override
 451     public
 452     void done(String error) {
 453         progress.setVisibility(View.INVISIBLE);
 454         Log.d("visuals", "hiding progress");
 455
 456         if (error == null) reset_form();
 457         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 458                 BaseTransientBottomBar.LENGTH_LONG).show();
 459
 460         toggle_all_editing(true);
 461         check_transaction_submittable();
 462     }
 463
 464     private void reset_form() {
 465         text_date.setText("");
 466         text_descr.setText("");
 467
 468         text_descr.requestFocus();
 469
 470         while(table.getChildCount() > 2) {
 471             table.removeViewAt(2);
 472         }
 473         for( int i = 0; i < 2; i++ ) {
 474             TableRow tr = (TableRow) table.getChildAt(i);
 475             if ( tr == null) break;
 476
 477             ((TextView)tr.getChildAt(0)).setText("");
 478             ((TextView)tr.getChildAt(1)).setText("");
 479         }
 480     }
 481 }