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                     check_transaction_submittable();
 175 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 176                 }
 177                 else {
 178                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 179                             .setAction("Action", null).show();
 180                 }
 181             }
 182 //            @Override
 183 //            public boolean performClick(View view, MotionEvent m) {
 184 //                return true;
 185 //            }
 186             public boolean onTouch(View view, MotionEvent m) {
 187                 return gestureDetector.onTouchEvent(m);
 188             }
 189         });
 190     }
 191
 192     private void hook_text_change_listener(final TextView view) {
 193         view.addTextChangedListener(new TextWatcher() {
 194             @Override
 195             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 196
 197             }
 198
 199             @Override
 200             public void onTextChanged(CharSequence s, int start, int before, int count) {
 201
 202             }
 203
 204             @Override
 205             public void afterTextChanged(Editable s) {
 206 //                Log.d("input", "text changed");
 207                 check_transaction_submittable();
 208             }
 209         });
 210
 211     }
 212
 213     @TargetApi(Build.VERSION_CODES.N)
 214     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 215         String[] from = {field};
 216         int[] to = {android.R.id.text1};
 217         SQLiteDatabase db = MobileLedgerDB.db;
 218
 219         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 220         adapter.setStringConversionColumn(1);
 221
 222         FilterQueryProvider provider = new FilterQueryProvider() {
 223             @Override
 224             public Cursor runQuery(CharSequence constraint) {
 225                 if (constraint == null) return null;
 226
 227                 String str = constraint.toString().toUpperCase();
 228                 Log.d("autocompletion", "Looking for "+str);
 229                 String[] col_names = {FontsContract.Columns._ID, field};
 230                 MatrixCursor c = new MatrixCursor(col_names);
 231
 232                 Cursor matches = db.rawQuery(String.format(
 233                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 234                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 235                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 236                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 237                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 238                         new String[]{str, str, str, str});
 239
 240                 try {
 241                     int i = 0;
 242                     while (matches.moveToNext()) {
 243                         String match = matches.getString(0);
 244                         int order = matches.getInt(1);
 245                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 246                         c.newRow().add(i++).add(match);
 247                     }
 248                 }
 249                 finally {
 250                     matches.close();
 251                 }
 252
 253                 return c;
 254
 255             }
 256         };
 257
 258         adapter.setFilterQueryProvider(provider);
 259
 260         view.setAdapter(adapter);
 261     }
 262
 263     public boolean onCreateOptionsMenu(Menu menu) {
 264         // Inflate the menu; this adds items to the action bar if it is present.
 265         getMenuInflater().inflate(R.menu.new_transaction, menu);
 266         mSave = menu.findItem(R.id.action_submit_transaction);
 267         if (mSave == null) throw new AssertionError();
 268
 269         check_transaction_submittable();
 270
 271         return true;
 272     }
 273
 274     public void pickTransactionDate(View view) {
 275         DialogFragment picker = new DatePickerFragment();
 276         picker.show(getSupportFragmentManager(), "datePicker");
 277     }
 278
 279     public int dp2px(float dp) {
 280         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 281     }
 282
 283     private void do_add_account_row(boolean focus) {
 284         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 285         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 286         acc.setHint(R.string.new_transaction_account_hint);
 287         acc.setWidth(0);
 288         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 289
 290         final EditText amt = new EditText(this);
 291         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 292                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 293         amt.setHint(R.string.new_transaction_amount_hint);
 294         amt.setWidth(0);
 295         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL );
 296         amt.setMinWidth(dp2px(40));
 297         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 298         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 299
 300         // forward navigation support
 301         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 302         final TextView last_amt = (TextView) last_row.getChildAt(1);
 303         last_amt.setNextFocusForwardId(acc.getId());
 304         last_amt.setNextFocusRightId(acc.getId());
 305         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 306         acc.setNextFocusForwardId(amt.getId());
 307         acc.setNextFocusRightId(amt.getId());
 308
 309         final TableRow row = new TableRow(this);
 310         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 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         hook_swipe_listener(row);
 319         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 320         hook_text_change_listener(acc);
 321         hook_text_change_listener(amt);
 322     }
 323
 324     public void addTransactionAccountFromMenu(MenuItem item) {
 325         do_add_account_row(true);
 326     }
 327
 328     public
 329     void resetTransactionFromMenu(MenuItem item) {
 330         reset_form();
 331     }
 332
 333     public void saveTransactionFromMenu(MenuItem item) {
 334         save_transaction();
 335     }
 336
 337     // rules:
 338     // 1) at least two account names
 339     // 2) each amount must have account name
 340     // 3) amounts must balance to 0, or
 341     // 3a) there must be exactly one empty amount
 342     // 4) empty accounts with empty amounts are ignored
 343     // 5) a row with an empty account name or empty amount is guaranteed to exist
 344     @SuppressLint("DefaultLocale")
 345     private void check_transaction_submittable() {
 346         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 347         int accounts = 0;
 348         int accounts_with_values = 0;
 349         int amounts = 0;
 350         int amounts_with_accounts = 0;
 351         int empty_rows = 0;
 352         TextView empty_amount = null;
 353         boolean single_empty_amount = false;
 354         float running_total = 0f;
 355         boolean have_description =
 356                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 357                         .isEmpty();
 358
 359         try {
 360             for (int i = 0; i < table.getChildCount(); i++) {
 361                 TableRow row = (TableRow) table.getChildAt(i);
 362
 363                 TextView acc_name_v = (TextView) row.getChildAt(0);
 364                 TextView amount_v = (TextView) row.getChildAt(1);
 365                 String amt = String.valueOf(amount_v.getText());
 366                 String acc_name = String.valueOf(acc_name_v.getText());
 367                 acc_name = acc_name.trim();
 368
 369                 if (!acc_name.isEmpty()) {
 370                     accounts++;
 371
 372                     if (!amt.isEmpty()) {
 373                         accounts_with_values++;
 374                     }
 375                 }
 376                 else empty_rows++;
 377
 378                 if (amt.isEmpty()) {
 379                     amount_v.setHint(String.format("%1.2f", 0f));
 380                     if (empty_amount == null) {
 381                         empty_amount = amount_v;
 382                         single_empty_amount = true;
 383                     }
 384                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 385                 }
 386                 else {
 387                     amounts++;
 388                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 389                     running_total += Float.valueOf(amt);
 390                 }
 391             }
 392
 393             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 394                     == amounts)))
 395             {
 396                 do_add_account_row(false);
 397             }
 398
 399             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 400                     amounts_with_accounts == amounts))
 401             {
 402                 if (mSave != null) mSave.setVisible(true);
 403             }
 404             else if (mSave != null) mSave.setVisible(false);
 405
 406             if (single_empty_amount) {
 407                 empty_amount
 408                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 409             }
 410         }
 411         catch (NumberFormatException e) {
 412             if (mSave != null) mSave.setVisible(false);
 413         }
 414         catch (Exception e) {
 415             e.printStackTrace();
 416             if (mSave != null) mSave.setVisible(false);
 417         }
 418     }
 419
 420     @Override
 421     public
 422     void done(String error) {
 423         progress.setVisibility(View.INVISIBLE);
 424         Log.d("visuals", "hiding progress");
 425
 426         if (error == null) reset_form();
 427         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 428                 BaseTransientBottomBar.LENGTH_LONG).show();
 429
 430         toggle_all_editing(true);
 431         check_transaction_submittable();
 432     }
 433
 434     private void reset_form() {
 435         text_date.setText("");
 436         text_descr.setText("");
 437
 438         text_descr.requestFocus();
 439
 440         while(table.getChildCount() > 2) {
 441             table.removeViewAt(2);
 442         }
 443         for( int i = 0; i < 2; i++ ) {
 444             TableRow tr = (TableRow) table.getChildAt(i);
 445             if ( tr == null) break;
 446
 447             ((TextView)tr.getChildAt(0)).setText("");
 448             ((TextView)tr.getChildAt(1)).setText("");
 449         }
 450     }
 451 }