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.Date;
  37 import java.util.Objects;
  38
  39 /*
  40  * TODO: auto-fill of transaction description
  41  *       if Android O's implementation won't work, add a custom one
  42  * TODO: nicer progress while transaction is submitted
  43  * TODO: latest transactions, maybe with browsing further in the past?
  44  * TODO: reports
  45  * TODO: get rid of the custom session/cookie and auth code?
  46  *         (the last problem with the POST was the missing content-length header)
  47  * TODO: app icon
  48  * TODO: nicer swiping removal with visual feedback
  49  * TODO: setup wizard
  50  * TODO: update accounts/check settings upon change of backend settings
  51  *  */
  52
  53 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  54     private TableLayout table;
  55     private ProgressBar progress;
  56     private TextView text_date;
  57     private AutoCompleteTextView text_descr;
  58     private static SaveTransactionTask saver;
  59     private MenuItem mSave;
  60
  61     @Override
  62     protected void onCreate(Bundle savedInstanceState) {
  63         super.onCreate(savedInstanceState);
  64         setContentView(R.layout.activity_new_transaction);
  65         Toolbar toolbar = findViewById(R.id.toolbar);
  66         setSupportActionBar(toolbar);
  67
  68         text_date = findViewById(R.id.new_transaction_date);
  69         text_date.setOnFocusChangeListener(new View.OnFocusChangeListener() {
  70             @Override
  71             public
  72             void onFocusChange(View v, boolean hasFocus) {
  73                 if (hasFocus) pickTransactionDate(v);
  74             }
  75         });
  76         text_descr = findViewById(R.id.new_transaction_description);
  77         hook_autocompletion_adapter(text_descr, MobileLedgerDB.DESCRIPTION_HISTORY_TABLE, "description");
  78         hook_text_change_listener(text_descr);
  79
  80         progress = findViewById(R.id.save_transaction_progress);
  81
  82         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  83         table = findViewById(R.id.new_transaction_accounts_table);
  84         table.removeAllViews();
  85         do_add_account_row(false);
  86         do_add_account_row(false);
  87     }
  88
  89     @Override
  90     public void finish() {
  91         super.finish();
  92         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
  93     }
  94
  95     @Override
  96     public boolean onOptionsItemSelected(MenuItem item) {
  97         switch (item.getItemId()) {
  98             case android.R.id.home:
  99                 finish();
 100                 return true;
 101         }
 102         return super.onOptionsItemSelected(item);
 103     }
 104
 105     public void save_transaction() {
 106         if (mSave != null) mSave.setVisible(false);
 107         toggle_all_editing(false);
 108         progress.setVisibility(View.VISIBLE);
 109
 110         saver = new SaveTransactionTask(this);
 111
 112         saver.setPref(PreferenceManager.getDefaultSharedPreferences(this));
 113         String date = text_date.getText().toString();
 114         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 115         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 116
 117         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 118         for ( int i = 0; i < table.getChildCount(); i++ ) {
 119             TableRow row = (TableRow) table.getChildAt(i);
 120             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 121             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 122             LedgerTransactionItem item =
 123                     amt.length() > 0
 124                     ? new LedgerTransactionItem( acc, Float.parseFloat(amt))
 125                     : new LedgerTransactionItem( acc );
 126
 127             tr.add_item(item);
 128         }
 129         saver.execute(tr);
 130     }
 131
 132     private void toggle_all_editing(boolean enabled) {
 133         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 134         for (int i = 0; i < table.getChildCount(); i++) {
 135             TableRow row = (TableRow) table.getChildAt(i);
 136             for (int j = 0; j < row.getChildCount(); j++) {
 137                 row.getChildAt(j).setEnabled(enabled);
 138             }
 139         }
 140     }
 141
 142     private void hook_swipe_listener(final TableRow row) {
 143         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 144             public void onSwipeLeft() {
 145 //                Log.d("swipe", "LEFT" + row.getId());
 146                 if (table.getChildCount() > 2) {
 147                     table.removeView(row);
 148 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 149                 }
 150                 else {
 151                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required, Snackbar.LENGTH_LONG)
 152                             .setAction("Action", null).show();
 153                 }
 154             }
 155 //            @Override
 156 //            public boolean performClick(View view, MotionEvent m) {
 157 //                return true;
 158 //            }
 159             public boolean onTouch(View view, MotionEvent m) {
 160                 return gestureDetector.onTouchEvent(m);
 161             }
 162         });
 163     }
 164
 165     private void hook_text_change_listener(final TextView view) {
 166         view.addTextChangedListener(new TextWatcher() {
 167             @Override
 168             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 169
 170             }
 171
 172             @Override
 173             public void onTextChanged(CharSequence s, int start, int before, int count) {
 174
 175             }
 176
 177             @Override
 178             public void afterTextChanged(Editable s) {
 179 //                Log.d("input", "text changed");
 180                 check_transaction_submittable();
 181             }
 182         });
 183
 184     }
 185
 186     @TargetApi(Build.VERSION_CODES.N)
 187     private void hook_autocompletion_adapter(final AutoCompleteTextView view, final String table, final String field) {
 188         String[] from = {field};
 189         int[] to = {android.R.id.text1};
 190         SQLiteDatabase db = MobileLedgerDB.db;
 191
 192         SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_dropdown_item_1line, null, from, to, 0);
 193         adapter.setStringConversionColumn(1);
 194
 195         FilterQueryProvider provider = new FilterQueryProvider() {
 196             @Override
 197             public Cursor runQuery(CharSequence constraint) {
 198                 if (constraint == null) return null;
 199
 200                 String str = constraint.toString().toUpperCase();
 201                 Log.d("autocompletion", "Looking for "+str);
 202                 String[] col_names = {FontsContract.Columns._ID, field};
 203                 MatrixCursor c = new MatrixCursor(col_names);
 204
 205                 Cursor matches = db.rawQuery(String.format(
 206                         "SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
 207                                 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
 208                                 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
 209                                 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
 210                                 "ORDER BY 2, 1;", field, field, field, field, table, field),
 211                         new String[]{str, str, str, str});
 212
 213                 try {
 214                     int i = 0;
 215                     while (matches.moveToNext()) {
 216                         String match = matches.getString(0);
 217                         int order = matches.getInt(1);
 218                         Log.d("autocompletion", String.format("match: %s |%d", match, order));
 219                         c.newRow().add(i++).add(match);
 220                     }
 221                 }
 222                 finally {
 223                     matches.close();
 224                 }
 225
 226                 return c;
 227
 228             }
 229         };
 230
 231         adapter.setFilterQueryProvider(provider);
 232
 233         view.setAdapter(adapter);
 234     }
 235
 236     public boolean onCreateOptionsMenu(Menu menu) {
 237         // Inflate the menu; this adds items to the action bar if it is present.
 238         getMenuInflater().inflate(R.menu.new_transaction, menu);
 239         mSave = menu.findItem(R.id.action_submit_transaction);
 240         if (mSave == null) throw new AssertionError();
 241
 242         check_transaction_submittable();
 243
 244         return true;
 245     }
 246
 247     public void pickTransactionDate(View view) {
 248         DialogFragment picker = new DatePickerFragment();
 249         picker.show(getSupportFragmentManager(), "datePicker");
 250     }
 251
 252     public int dp2px(float dp) {
 253         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics()));
 254     }
 255
 256     private void do_add_account_row(boolean focus) {
 257         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 258         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT, 9f));
 259         acc.setHint(R.string.new_transaction_account_hint);
 260         acc.setWidth(0);
 261
 262         final EditText amt = new EditText(this);
 263         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 264                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 265         amt.setHint(R.string.new_transaction_amount_hint);
 266         amt.setWidth(0);
 267         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL );
 268         amt.setMinWidth(dp2px(40));
 269         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 270
 271         final TableRow row = new TableRow(this);
 272         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT));
 273         row.setGravity(Gravity.BOTTOM);
 274         row.addView(acc);
 275         row.addView(amt);
 276         table.addView(row);
 277
 278         if (focus) acc.requestFocus();
 279
 280         hook_swipe_listener(row);
 281         hook_autocompletion_adapter(acc, MobileLedgerDB.ACCOUNTS_TABLE, "name");
 282         hook_text_change_listener(acc);
 283         hook_text_change_listener(amt);
 284     }
 285
 286     public void addTransactionAccountFromMenu(MenuItem item) {
 287         do_add_account_row(true);
 288     }
 289
 290     public
 291     void resetTransactionFromMenu(MenuItem item) {
 292         reset_form();
 293     }
 294
 295     public void saveTransactionFromMenu(MenuItem item) {
 296         save_transaction();
 297     }
 298
 299     // rules:
 300     // 1) at least two account names
 301     // 2) each amount must have account name
 302     // 3) amounts must balance to 0, or
 303     // 3a) there must be exactly one empty amount
 304     // 4) empty accounts with empty amounts are ignored
 305     // 5) a row with an empty account name or empty amount is guaranteed to exist
 306     @SuppressLint("DefaultLocale")
 307     private void check_transaction_submittable() {
 308         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 309         int accounts = 0;
 310         int accounts_with_values = 0;
 311         int amounts = 0;
 312         int amounts_with_accounts = 0;
 313         int empty_rows = 0;
 314         TextView empty_amount = null;
 315         boolean single_empty_amount = false;
 316         float running_total = 0f;
 317         boolean have_description =
 318                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 319                         .isEmpty();
 320
 321         try {
 322             for (int i = 0; i < table.getChildCount(); i++) {
 323                 TableRow row = (TableRow) table.getChildAt(i);
 324
 325                 TextView acc_name_v = (TextView) row.getChildAt(0);
 326                 TextView amount_v = (TextView) row.getChildAt(1);
 327                 String amt = String.valueOf(amount_v.getText());
 328                 String acc_name = String.valueOf(acc_name_v.getText());
 329                 acc_name = acc_name.trim();
 330
 331                 if (!acc_name.isEmpty()) {
 332                     accounts++;
 333
 334                     if (!amt.isEmpty()) {
 335                         accounts_with_values++;
 336                     }
 337                 }
 338                 else empty_rows++;
 339
 340                 if (amt.isEmpty()) {
 341                     amount_v.setHint(String.format("%1.2f", 0f));
 342                     if (empty_amount == null) {
 343                         empty_amount = amount_v;
 344                         single_empty_amount = true;
 345                     }
 346                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 347                 }
 348                 else {
 349                     amounts++;
 350                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 351                     running_total += Float.valueOf(amt);
 352                 }
 353             }
 354
 355             if ((empty_rows == 0) && ((table.getChildCount() == accounts) || (table.getChildCount()
 356                     == amounts)))
 357             {
 358                 do_add_account_row(false);
 359             }
 360
 361             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && (
 362                     amounts_with_accounts == amounts))
 363             {
 364                 if (mSave != null) mSave.setVisible(true);
 365             }
 366             else if (mSave != null) mSave.setVisible(false);
 367
 368             if (single_empty_amount) {
 369                 empty_amount
 370                         .setHint(String.format("%1.2f", (running_total > 0) ? -running_total : 0f));
 371             }
 372         }
 373         catch (NumberFormatException e) {
 374             if (mSave != null) mSave.setVisible(false);
 375         }
 376         catch (Exception e) {
 377             e.printStackTrace();
 378             if (mSave != null) mSave.setVisible(false);
 379         }
 380     }
 381
 382     @Override
 383     public
 384     void done(String error) {
 385         progress.setVisibility(View.INVISIBLE);
 386         Log.d("visuals", "hiding progress");
 387
 388         if (error == null) reset_form();
 389         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 390                 BaseTransientBottomBar.LENGTH_LONG).show();
 391
 392         toggle_all_editing(true);
 393         check_transaction_submittable();
 394     }
 395
 396     private void reset_form() {
 397         text_date.setText("");
 398         text_descr.setText("");
 399         while(table.getChildCount() > 2) {
 400             table.removeViewAt(2);
 401         }
 402         for( int i = 0; i < 2; i++ ) {
 403             TableRow tr = (TableRow) table.getChildAt(i);
 404             if ( tr == null) break;
 405
 406             ((TextView)tr.getChildAt(0)).setText("");
 407             ((TextView)tr.getChildAt(1)).setText("");
 408         }
 409
 410         text_descr.requestFocus();
 411     }
 412 }