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                     table.removeView(row);
 183                     check_transaction_submittable();
 184 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 185                 }
 186                 else {
 187                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 188                             .setAction("Action", null).show();
 189                 }
 190             }
 191 //            @Override
 192 //            public boolean performClick(View view, MotionEvent m) {
 193 //                return true;
 194 //            }
 195             public boolean onTouch(View view, MotionEvent m) {
 196                 return gestureDetector.onTouchEvent(m);
 197             }
 198         });
 199     }
 200
 201     private void hook_text_change_listener(final TextView view) {
 202         view.addTextChangedListener(new TextWatcher() {
 203             @Override
 204             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 205
 206             }
 207
 208             @Override
 209             public void onTextChanged(CharSequence s, int start, int before, int count) {
 210
 211             }
 212
 213             @Override
 214             public void afterTextChanged(Editable s) {
 215 //                Log.d("input", "text changed");
 216                 check_transaction_submittable();
 217             }
 218         });
 219
 220     }
 221
 222     @TargetApi(Build.VERSION_CODES.N)
 223     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 224         String[] from = {field};
 225         int[] to = {android.R.id.text1};
 226         SQLiteDatabase db = MobileLedgerDB.db;
 227
 228         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 229         adapter.setStringConversionColumn(1);
 230
 231         FilterQueryProvider provider = new FilterQueryProvider() {
 232             @Override
 233             public Cursor runQuery(CharSequence constraint) {
 234                 if (constraint == null) return null;
 235
 236                 String str = constraint.toString().toUpperCase();
 237                 Log.d("autocompletion", "Looking for "+str);
 238                 String[] col_names = {FontsContract.Columns._ID, field};
 239                 MatrixCursor c = new MatrixCursor(col_names);
 240
 241                 Cursor matches = db.rawQuery(String.format(
 242                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 243                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 244                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 245                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 246                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 247                         new String[]{str, str, str, str});
 248
 249                 try {
 250                     int i = 0;
 251                     while (matches.moveToNext()) {
 252                         String match = matches.getString(0);
 253                         int order = matches.getInt(1);
 254                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 255                         c.newRow().add(i++).add(match);
 256                     }
 257                 }
 258                 finally {
 259                     matches.close();
 260                 }
 261
 262                 return c;
 263
 264             }
 265         };
 266
 267         adapter.setFilterQueryProvider(provider);
 268
 269         view.setAdapter(adapter);
 270     }
 271
 272     public boolean onCreateOptionsMenu(Menu menu) {
 273         // Inflate the menu; this adds items to the action bar if it is present.
 274         getMenuInflater().inflate(R.menu.new_transaction, menu);
 275         mSave = menu.findItem(R.id.action_submit_transaction);
 276         if (mSave == null) throw new AssertionError();
 277
 278         check_transaction_submittable();
 279
 280         return true;
 281     }
 282
 283     public void pickTransactionDate(View view) {
 284         DialogFragment picker = new DatePickerFragment();
 285         picker.show(getSupportFragmentManager(), "datePicker");
 286     }
 287
 288     public int dp2px(float dp) {
 289         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 290     }
 291
 292     private void do_add_account_row(boolean focus) {
 293         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 294         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 295         acc.setHint(R.string.new_transaction_account_hint);
 296         acc.setWidth(0);
 297         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 298
 299         final EditText amt = new EditText(this);
 300         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 301                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 302         amt.setHint(R.string.new_transaction_amount_hint);
 303         amt.setWidth(0);
 304         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL );
 305         amt.setMinWidth(dp2px(40));
 306         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 307         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 308
 309         // forward navigation support
 310         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 311         final TextView last_amt = (TextView) last_row.getChildAt(1);
 312         last_amt.setNextFocusForwardId(acc.getId());
 313         last_amt.setNextFocusRightId(acc.getId());
 314         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 315         acc.setNextFocusForwardId(amt.getId());
 316         acc.setNextFocusRightId(amt.getId());
 317
 318         final TableRow row = new TableRow(this);
 319         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT));
 320         row.setGravity(Gravity.BOTTOM);
 321         row.addView(acc);
 322         row.addView(amt);
 323         table.addView(row);
 324
 325         if (focus) acc.requestFocus();
 326
 327         hook_swipe_listener(row);
 328         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 329         hook_text_change_listener(acc);
 330         hook_text_change_listener(amt);
 331     }
 332
 333     public void addTransactionAccountFromMenu(MenuItem item) {
 334         do_add_account_row(true);
 335     }
 336
 337     public
 338     void resetTransactionFromMenu(MenuItem item) {
 339         reset_form();
 340     }
 341
 342     public void saveTransactionFromMenu(MenuItem item) {
 343         save_transaction();
 344     }
 345
 346     // rules:
 347     // 1) at least two account names
 348     // 2) each amount must have account name
 349     // 3) amounts must balance to 0, or
 350     // 3a) there must be exactly one empty amount
 351     // 4) empty accounts with empty amounts are ignored
 352     // 5) a row with an empty account name or empty amount is guaranteed to exist
 353     @SuppressLint("DefaultLocale")
 354     private void check_transaction_submittable() {
 355         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 356         int accounts = 0;
 357         int accounts_with_values = 0;
 358         int amounts = 0;
 359         int amounts_with_accounts = 0;
 360         int empty_rows = 0;
 361         TextView empty_amount = null;
 362         boolean single_empty_amount = false;
 363         float running_total = 0f;
 364         boolean have_description =
 365                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 366                         .isEmpty();
 367
 368         try {
 369             for (int i = 0; i < table.getChildCount(); i++) {
 370                 TableRow row = (TableRow) table.getChildAt(i);
 371
 372                 TextView acc_name_v = (TextView) row.getChildAt(0);
 373                 TextView amount_v = (TextView) row.getChildAt(1);
 374                 String amt = String.valueOf(amount_v.getText());
 375                 String acc_name = String.valueOf(acc_name_v.getText());
 376                 acc_name = acc_name.trim();
 377
 378                 if (!acc_name.isEmpty()) {
 379                     accounts++;
 380
 381                     if (!amt.isEmpty()) {
 382                         accounts_with_values++;
 383                     }
 384                 }
 385                 else empty_rows++;
 386
 387                 if (amt.isEmpty()) {
 388                     amount_v.setHint(String.format("%1.2f", 0f));
 389                     if (empty_amount == null) {
 390                         empty_amount = amount_v;
 391                         single_empty_amount = true;
 392                     }
 393                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 394                 }
 395                 else {
 396                     amounts++;
 397                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 398                     running_total += Float.valueOf(amt);
 399                 }
 400             }
 401
 402             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 403                     == amounts)))
 404             {
 405                 do_add_account_row(false);
 406             }
 407
 408             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 409                     amounts_with_accounts == amounts))
 410             {
 411                 if (mSave != null) mSave.setVisible(true);
 412             }
 413             else if (mSave != null) mSave.setVisible(false);
 414
 415             if (single_empty_amount) {
 416                 empty_amount
 417                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 418             }
 419         }
 420         catch (NumberFormatException e) {
 421             if (mSave != null) mSave.setVisible(false);
 422         }
 423         catch (Exception e) {
 424             e.printStackTrace();
 425             if (mSave != null) mSave.setVisible(false);
 426         }
 427     }
 428
 429     @Override
 430     public
 431     void done(String error) {
 432         progress.setVisibility(View.INVISIBLE);
 433         Log.d("visuals", "hiding progress");
 434
 435         if (error == null) reset_form();
 436         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 437                 BaseTransientBottomBar.LENGTH_LONG).show();
 438
 439         toggle_all_editing(true);
 440         check_transaction_submittable();
 441     }
 442
 443     private void reset_form() {
 444         text_date.setText("");
 445         text_descr.setText("");
 446
 447         text_descr.requestFocus();
 448
 449         while(table.getChildCount() > 2) {
 450             table.removeViewAt(2);
 451         }
 452         for( int i = 0; i < 2; i++ ) {
 453             TableRow tr = (TableRow) table.getChildAt(i);
 454             if ( tr == null) break;
 455
 456             ((TextView)tr.getChildAt(0)).setText("");
 457             ((TextView)tr.getChildAt(1)).setText("");
 458         }
 459     }
 460 }