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