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     public void finish() {
  99         super.finish();
 100         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 101     }
 102
 103     @Override
 104     public boolean onOptionsItemSelected(MenuItem item) {
 105         switch (item.getItemId()) {
 106             case android.R.id.home:
 107                 finish();
 108                 return true;
 109         }
 110         return super.onOptionsItemSelected(item);
 111     }
 112
 113     public void save_transaction() {
 114         if (mSave != null) mSave.setVisible(false);
 115         toggle_all_editing(false);
 116         progress.setVisibility(View.VISIBLE);
 117
 118         saver = new SaveTransactionTask(this);
 119
 120         saver.setPref(PreferenceManager.getDefaultSharedPreferences(this));
 121         String date = text_date.getText().toString();
 122         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 123         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 124
 125         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 126         for ( int i = 0; i < table.getChildCount(); i++ ) {
 127             TableRow row = (TableRow) table.getChildAt(i);
 128             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 129             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 130             LedgerTransactionItem item =
 131                     amt.length() > 0
 132                     ? new LedgerTransactionItem( acc, Float.parseFloat(amt))
 133                     : new LedgerTransactionItem( acc );
 134
 135             tr.add_item(item);
 136         }
 137         saver.execute(tr);
 138     }
 139
 140     private void toggle_all_editing(boolean enabled) {
 141         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 142         for (int i = 0; i < table.getChildCount(); i++) {
 143             TableRow row = (TableRow) table.getChildAt(i);
 144             for (int j = 0; j < row.getChildCount(); j++) {
 145                 row.getChildAt(j).setEnabled(enabled);
 146             }
 147         }
 148     }
 149
 150     private void hook_swipe_listener(final TableRow row) {
 151         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 152             public void onSwipeLeft() {
 153 //                Log.d("swipe", "LEFT" + row.getId());
 154                 if (table.getChildCount() > 2) {
 155                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 156                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 157                     TextView prev_amt =
 158                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 159                     TextView next_acc =
 160                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 161
 162                     if (next_acc == null) {
 163                         prev_amt.setNextFocusRightId(R.id.none);
 164                         prev_amt.setNextFocusForwardId(R.id.none);
 165                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 166                     }
 167                     else {
 168                         prev_amt.setNextFocusRightId(next_acc.getId());
 169                         prev_amt.setNextFocusForwardId(next_acc.getId());
 170                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 171                     }
 172
 173                     table.removeView(row);
 174 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 175                 }
 176                 else {
 177                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 178                             .setAction("Action", null).show();
 179                 }
 180             }
 181 //            @Override
 182 //            public boolean performClick(View view, MotionEvent m) {
 183 //                return true;
 184 //            }
 185             public boolean onTouch(View view, MotionEvent m) {
 186                 return gestureDetector.onTouchEvent(m);
 187             }
 188         });
 189     }
 190
 191     private void hook_text_change_listener(final TextView view) {
 192         view.addTextChangedListener(new TextWatcher() {
 193             @Override
 194             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 195
 196             }
 197
 198             @Override
 199             public void onTextChanged(CharSequence s, int start, int before, int count) {
 200
 201             }
 202
 203             @Override
 204             public void afterTextChanged(Editable s) {
 205 //                Log.d("input", "text changed");
 206                 check_transaction_submittable();
 207             }
 208         });
 209
 210     }
 211
 212     @TargetApi(Build.VERSION_CODES.N)
 213     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 214         String[] from = {field};
 215         int[] to = {android.R.id.text1};
 216         SQLiteDatabase db = MobileLedgerDB.db;
 217
 218         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 219         adapter.setStringConversionColumn(1);
 220
 221         FilterQueryProvider provider = new FilterQueryProvider() {
 222             @Override
 223             public Cursor runQuery(CharSequence constraint) {
 224                 if (constraint == null) return null;
 225
 226                 String str = constraint.toString().toUpperCase();
 227                 Log.d("autocompletion", "Looking for "+str);
 228                 String[] col_names = {FontsContract.Columns._ID, field};
 229                 MatrixCursor c = new MatrixCursor(col_names);
 230
 231                 Cursor matches = db.rawQuery(String.format(
 232                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 233                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 234                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 235                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 236                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 237                         new String[]{str, str, str, str});
 238
 239                 try {
 240                     int i = 0;
 241                     while (matches.moveToNext()) {
 242                         String match = matches.getString(0);
 243                         int order = matches.getInt(1);
 244                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 245                         c.newRow().add(i++).add(match);
 246                     }
 247                 }
 248                 finally {
 249                     matches.close();
 250                 }
 251
 252                 return c;
 253
 254             }
 255         };
 256
 257         adapter.setFilterQueryProvider(provider);
 258
 259         view.setAdapter(adapter);
 260     }
 261
 262     public boolean onCreateOptionsMenu(Menu menu) {
 263         // Inflate the menu; this adds items to the action bar if it is present.
 264         getMenuInflater().inflate(R.menu.new_transaction, menu);
 265         mSave = menu.findItem(R.id.action_submit_transaction);
 266         if (mSave == null) throw new AssertionError();
 267
 268         check_transaction_submittable();
 269
 270         return true;
 271     }
 272
 273     public void pickTransactionDate(View view) {
 274         DialogFragment picker = new DatePickerFragment();
 275         picker.show(getSupportFragmentManager(), "datePicker");
 276     }
 277
 278     public int dp2px(float dp) {
 279         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 280     }
 281
 282     private void do_add_account_row(boolean focus) {
 283         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 284         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 285         acc.setHint(R.string.new_transaction_account_hint);
 286         acc.setWidth(0);
 287         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 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 | 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, 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         hook_swipe_listener(row);
 318         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 319         hook_text_change_listener(acc);
 320         hook_text_change_listener(amt);
 321     }
 322
 323     public void addTransactionAccountFromMenu(MenuItem item) {
 324         do_add_account_row(true);
 325     }
 326
 327     public
 328     void resetTransactionFromMenu(MenuItem item) {
 329         reset_form();
 330     }
 331
 332     public void saveTransactionFromMenu(MenuItem item) {
 333         save_transaction();
 334     }
 335
 336     // rules:
 337     // 1) at least two account names
 338     // 2) each amount must have account name
 339     // 3) amounts must balance to 0, or
 340     // 3a) there must be exactly one empty amount
 341     // 4) empty accounts with empty amounts are ignored
 342     // 5) a row with an empty account name or empty amount is guaranteed to exist
 343     @SuppressLint("DefaultLocale")
 344     private void check_transaction_submittable() {
 345         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 346         int accounts = 0;
 347         int accounts_with_values = 0;
 348         int amounts = 0;
 349         int amounts_with_accounts = 0;
 350         int empty_rows = 0;
 351         TextView empty_amount = null;
 352         boolean single_empty_amount = false;
 353         float running_total = 0f;
 354         boolean have_description =
 355                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 356                         .isEmpty();
 357
 358         try {
 359             for (int i = 0; i < table.getChildCount(); i++) {
 360                 TableRow row = (TableRow) table.getChildAt(i);
 361
 362                 TextView acc_name_v = (TextView) row.getChildAt(0);
 363                 TextView amount_v = (TextView) row.getChildAt(1);
 364                 String amt = String.valueOf(amount_v.getText());
 365                 String acc_name = String.valueOf(acc_name_v.getText());
 366                 acc_name = acc_name.trim();
 367
 368                 if (!acc_name.isEmpty()) {
 369                     accounts++;
 370
 371                     if (!amt.isEmpty()) {
 372                         accounts_with_values++;
 373                     }
 374                 }
 375                 else empty_rows++;
 376
 377                 if (amt.isEmpty()) {
 378                     amount_v.setHint(String.format("%1.2f", 0f));
 379                     if (empty_amount == null) {
 380                         empty_amount = amount_v;
 381                         single_empty_amount = true;
 382                     }
 383                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 384                 }
 385                 else {
 386                     amounts++;
 387                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 388                     running_total += Float.valueOf(amt);
 389                 }
 390             }
 391
 392             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 393                     == amounts)))
 394             {
 395                 do_add_account_row(false);
 396             }
 397
 398             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 399                     amounts_with_accounts == amounts))
 400             {
 401                 if (mSave != null) mSave.setVisible(true);
 402             }
 403             else if (mSave != null) mSave.setVisible(false);
 404
 405             if (single_empty_amount) {
 406                 empty_amount
 407                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 408             }
 409         }
 410         catch (NumberFormatException e) {
 411             if (mSave != null) mSave.setVisible(false);
 412         }
 413         catch (Exception e) {
 414             e.printStackTrace();
 415             if (mSave != null) mSave.setVisible(false);
 416         }
 417     }
 418
 419     @Override
 420     public
 421     void done(String error) {
 422         progress.setVisibility(View.INVISIBLE);
 423         Log.d("visuals", "hiding progress");
 424
 425         if (error == null) reset_form();
 426         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 427                 BaseTransientBottomBar.LENGTH_LONG).show();
 428
 429         toggle_all_editing(true);
 430         check_transaction_submittable();
 431     }
 432
 433     private void reset_form() {
 434         text_date.setText("");
 435         text_descr.setText("");
 436
 437         text_descr.requestFocus();
 438
 439         while(table.getChildCount() > 2) {
 440             table.removeViewAt(2);
 441         }
 442         for( int i = 0; i < 2; i++ ) {
 443             TableRow tr = (TableRow) table.getChildAt(i);
 444             if ( tr == null) break;
 445
 446             ((TextView)tr.getChildAt(0)).setText("");
 447             ((TextView)tr.getChildAt(1)).setText("");
 448         }
 449     }
 450 }