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