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         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 149         for (int i = 0; i < table.getChildCount(); i++) {
 150             TableRow row = (TableRow) table.getChildAt(i);
 151             for (int j = 0; j < row.getChildCount(); j++) {
 152                 row.getChildAt(j).setEnabled(enabled);
 153             }
 154         }
 155     }
 156
 157     private void hook_swipe_listener(final TableRow row) {
 158         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 159             public void onSwipeLeft() {
 160 //                Log.d("swipe", "LEFT" + row.getId());
 161                 if (table.getChildCount() > 2) {
 162                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 163                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 164                     TextView prev_amt =
 165                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 166                     TextView next_acc =
 167                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 168
 169                     if (next_acc == null) {
 170                         prev_amt.setNextFocusRightId(R.id.none);
 171                         prev_amt.setNextFocusForwardId(R.id.none);
 172                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 173                     }
 174                     else {
 175                         prev_amt.setNextFocusRightId(next_acc.getId());
 176                         prev_amt.setNextFocusForwardId(next_acc.getId());
 177                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 178                     }
 179
 180                     table.removeView(row);
 181                     check_transaction_submittable();
 182 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 183                 }
 184                 else {
 185                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 186                             .setAction("Action", null).show();
 187                 }
 188             }
 189 //            @Override
 190 //            public boolean performClick(View view, MotionEvent m) {
 191 //                return true;
 192 //            }
 193             public boolean onTouch(View view, MotionEvent m) {
 194                 return gestureDetector.onTouchEvent(m);
 195             }
 196         });
 197     }
 198
 199     private void hook_text_change_listener(final TextView view) {
 200         view.addTextChangedListener(new TextWatcher() {
 201             @Override
 202             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 203
 204             }
 205
 206             @Override
 207             public void onTextChanged(CharSequence s, int start, int before, int count) {
 208
 209             }
 210
 211             @Override
 212             public void afterTextChanged(Editable s) {
 213 //                Log.d("input", "text changed");
 214                 check_transaction_submittable();
 215             }
 216         });
 217
 218     }
 219
 220     @TargetApi(Build.VERSION_CODES.N)
 221     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 222         String[] from = {field};
 223         int[] to = {android.R.id.text1};
 224         SQLiteDatabase db = MobileLedgerDB.db;
 225
 226         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 227         adapter.setStringConversionColumn(1);
 228
 229         FilterQueryProvider provider = new FilterQueryProvider() {
 230             @Override
 231             public Cursor runQuery(CharSequence constraint) {
 232                 if (constraint == null) return null;
 233
 234                 String str = constraint.toString().toUpperCase();
 235                 Log.d("autocompletion", "Looking for "+str);
 236                 String[] col_names = {FontsContract.Columns._ID, field};
 237                 MatrixCursor c = new MatrixCursor(col_names);
 238
 239                 Cursor matches = db.rawQuery(String.format(
 240                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 241                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 242                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 243                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 244                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 245                         new String[]{str, str, str, str});
 246
 247                 try {
 248                     int i = 0;
 249                     while (matches.moveToNext()) {
 250                         String match = matches.getString(0);
 251                         int order = matches.getInt(1);
 252                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 253                         c.newRow().add(i++).add(match);
 254                     }
 255                 }
 256                 finally {
 257                     matches.close();
 258                 }
 259
 260                 return c;
 261
 262             }
 263         };
 264
 265         adapter.setFilterQueryProvider(provider);
 266
 267         view.setAdapter(adapter);
 268     }
 269
 270     public boolean onCreateOptionsMenu(Menu menu) {
 271         // Inflate the menu; this adds items to the action bar if it is present.
 272         getMenuInflater().inflate(R.menu.new_transaction, menu);
 273         mSave = menu.findItem(R.id.action_submit_transaction);
 274         if (mSave == null) throw new AssertionError();
 275
 276         check_transaction_submittable();
 277
 278         return true;
 279     }
 280
 281     public void pickTransactionDate(View view) {
 282         DialogFragment picker = new DatePickerFragment();
 283         picker.show(getSupportFragmentManager(), "datePicker");
 284     }
 285
 286     public int dp2px(float dp) {
 287         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 288     }
 289
 290     private void do_add_account_row(boolean focus) {
 291         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 292         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 293         acc.setHint(R.string.new_transaction_account_hint);
 294         acc.setWidth(0);
 295         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 296
 297         final EditText amt = new EditText(this);
 298         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 299                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 300         amt.setHint(R.string.new_transaction_amount_hint);
 301         amt.setWidth(0);
 302         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL );
 303         amt.setMinWidth(dp2px(40));
 304         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 305         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 306
 307         // forward navigation support
 308         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 309         final TextView last_amt = (TextView) last_row.getChildAt(1);
 310         last_amt.setNextFocusForwardId(acc.getId());
 311         last_amt.setNextFocusRightId(acc.getId());
 312         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 313         acc.setNextFocusForwardId(amt.getId());
 314         acc.setNextFocusRightId(amt.getId());
 315
 316         final TableRow row = new TableRow(this);
 317         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT));
 318         row.setGravity(Gravity.BOTTOM);
 319         row.addView(acc);
 320         row.addView(amt);
 321         table.addView(row);
 322
 323         if (focus) acc.requestFocus();
 324
 325         hook_swipe_listener(row);
 326         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 327         hook_text_change_listener(acc);
 328         hook_text_change_listener(amt);
 329     }
 330
 331     public void addTransactionAccountFromMenu(MenuItem item) {
 332         do_add_account_row(true);
 333     }
 334
 335     public
 336     void resetTransactionFromMenu(MenuItem item) {
 337         reset_form();
 338     }
 339
 340     public void saveTransactionFromMenu(MenuItem item) {
 341         save_transaction();
 342     }
 343
 344     // rules:
 345     // 1) at least two account names
 346     // 2) each amount must have account name
 347     // 3) amounts must balance to 0, or
 348     // 3a) there must be exactly one empty amount
 349     // 4) empty accounts with empty amounts are ignored
 350     // 5) a row with an empty account name or empty amount is guaranteed to exist
 351     @SuppressLint("DefaultLocale")
 352     private void check_transaction_submittable() {
 353         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 354         int accounts = 0;
 355         int accounts_with_values = 0;
 356         int amounts = 0;
 357         int amounts_with_accounts = 0;
 358         int empty_rows = 0;
 359         TextView empty_amount = null;
 360         boolean single_empty_amount = false;
 361         float running_total = 0f;
 362         boolean have_description =
 363                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 364                         .isEmpty();
 365
 366         try {
 367             for (int i = 0; i < table.getChildCount(); i++) {
 368                 TableRow row = (TableRow) table.getChildAt(i);
 369
 370                 TextView acc_name_v = (TextView) row.getChildAt(0);
 371                 TextView amount_v = (TextView) row.getChildAt(1);
 372                 String amt = String.valueOf(amount_v.getText());
 373                 String acc_name = String.valueOf(acc_name_v.getText());
 374                 acc_name = acc_name.trim();
 375
 376                 if (!acc_name.isEmpty()) {
 377                     accounts++;
 378
 379                     if (!amt.isEmpty()) {
 380                         accounts_with_values++;
 381                     }
 382                 }
 383                 else empty_rows++;
 384
 385                 if (amt.isEmpty()) {
 386                     amount_v.setHint(String.format("%1.2f", 0f));
 387                     if (empty_amount == null) {
 388                         empty_amount = amount_v;
 389                         single_empty_amount = true;
 390                     }
 391                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 392                 }
 393                 else {
 394                     amounts++;
 395                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 396                     running_total += Float.valueOf(amt);
 397                 }
 398             }
 399
 400             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 401                     == amounts)))
 402             {
 403                 do_add_account_row(false);
 404             }
 405
 406             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 407                     amounts_with_accounts == amounts))
 408             {
 409                 if (mSave != null) mSave.setVisible(true);
 410             }
 411             else if (mSave != null) mSave.setVisible(false);
 412
 413             if (single_empty_amount) {
 414                 empty_amount
 415                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 416             }
 417         }
 418         catch (NumberFormatException e) {
 419             if (mSave != null) mSave.setVisible(false);
 420         }
 421         catch (Exception e) {
 422             e.printStackTrace();
 423             if (mSave != null) mSave.setVisible(false);
 424         }
 425     }
 426
 427     @Override
 428     public
 429     void done(String error) {
 430         progress.setVisibility(View.INVISIBLE);
 431         Log.d("visuals", "hiding progress");
 432
 433         if (error == null) reset_form();
 434         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 435                 BaseTransientBottomBar.LENGTH_LONG).show();
 436
 437         toggle_all_editing(true);
 438         check_transaction_submittable();
 439     }
 440
 441     private void reset_form() {
 442         text_date.setText("");
 443         text_descr.setText("");
 444
 445         text_descr.requestFocus();
 446
 447         while(table.getChildCount() > 2) {
 448             table.removeViewAt(2);
 449         }
 450         for( int i = 0; i < 2; i++ ) {
 451             TableRow tr = (TableRow) table.getChildAt(i);
 452             if ( tr == null) break;
 453
 454             ((TextView)tr.getChildAt(0)).setText("");
 455             ((TextView)tr.getChildAt(1)).setText("");
 456         }
 457     }
 458 }