app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionActivity.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of Mobile-Ledger.
   4  * Mobile-Ledger is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * Mobile-Ledger is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.annotation.SuppressLint;
  21 import android.os.Bundle;
  22 import android.support.design.widget.BaseTransientBottomBar;
  23 import android.support.design.widget.Snackbar;
  24 import android.support.v4.app.DialogFragment;
  25 import android.support.v7.app.AppCompatActivity;
  26 import android.support.v7.widget.Toolbar;
  27 import android.text.Editable;
  28 import android.text.InputType;
  29 import android.text.TextWatcher;
  30 import android.util.Log;
  31 import android.util.TypedValue;
  32 import android.view.Gravity;
  33 import android.view.Menu;
  34 import android.view.MenuItem;
  35 import android.view.MotionEvent;
  36 import android.view.View;
  37 import android.view.inputmethod.EditorInfo;
  38 import android.widget.AutoCompleteTextView;
  39 import android.widget.EditText;
  40 import android.widget.ProgressBar;
  41 import android.widget.TableLayout;
  42 import android.widget.TableRow;
  43 import android.widget.TextView;
  44
  45 import net.ktnx.mobileledger.R;
  46 import net.ktnx.mobileledger.async.SaveTransactionTask;
  47 import net.ktnx.mobileledger.async.TaskCallback;
  48 import net.ktnx.mobileledger.model.LedgerTransaction;
  49 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  50 import net.ktnx.mobileledger.ui.DatePickerFragment;
  51 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  52 import net.ktnx.mobileledger.utils.MLDB;
  53
  54 import java.util.Date;
  55 import java.util.Objects;
  56
  57 /*
  58  * TODO: nicer progress while transaction is submitted
  59  * TODO: latest transactions, maybe with browsing further in the past?
  60  * TODO: reports
  61  * TODO: get rid of the custom session/cookie and auth code?
  62  *         (the last problem with the POST was the missing content-length header)
  63  * TODO: app icon
  64  * TODO: nicer swiping removal with visual feedback
  65  * TODO: setup wizard
  66  * TODO: update accounts/check settings upon change of backend settings
  67  *  */
  68
  69 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  70     private static SaveTransactionTask saver;
  71     private TableLayout table;
  72     private ProgressBar progress;
  73     private TextView text_date;
  74     private AutoCompleteTextView text_descr;
  75     private MenuItem mSave;
  76
  77     @Override
  78     protected void onCreate(Bundle savedInstanceState) {
  79         super.onCreate(savedInstanceState);
  80         setContentView(R.layout.activity_new_transaction);
  81         Toolbar toolbar = findViewById(R.id.toolbar);
  82         setSupportActionBar(toolbar);
  83
  84         text_date = findViewById(R.id.new_transaction_date);
  85         text_date.setOnFocusChangeListener(new View.OnFocusChangeListener() {
  86             @Override
  87             public void onFocusChange(View v, boolean hasFocus) {
  88                 if (hasFocus) pickTransactionDate(v);
  89             }
  90         });
  91         text_descr = findViewById(R.id.new_transaction_description);
  92         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
  93                 "description", false);
  94         hook_text_change_listener(text_descr);
  95
  96         progress = findViewById(R.id.save_transaction_progress);
  97
  98         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  99         table = findViewById(R.id.new_transaction_accounts_table);
 100         for (int i = 0; i < table.getChildCount(); i++) {
 101             TableRow row = (TableRow) table.getChildAt(i);
 102             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
 103             TextView amount_view = (TextView) row.getChildAt(1);
 104             hook_swipe_listener(row);
 105             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name",
 106                     true);
 107             hook_text_change_listener(acc_name_view);
 108             hook_text_change_listener(amount_view);
 109 //            Log.d("swipe", "hooked to row "+i);
 110         }
 111     }
 112
 113     @Override
 114     protected void onStart() {
 115         super.onStart();
 116         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
 117     }
 118
 119     @Override
 120     public void finish() {
 121         super.finish();
 122         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 123     }
 124
 125     @Override
 126     public boolean onOptionsItemSelected(MenuItem item) {
 127         switch (item.getItemId()) {
 128             case android.R.id.home:
 129                 finish();
 130                 return true;
 131         }
 132         return super.onOptionsItemSelected(item);
 133     }
 134
 135     public void save_transaction() {
 136         if (mSave != null) mSave.setVisible(false);
 137         toggle_all_editing(false);
 138         progress.setVisibility(View.VISIBLE);
 139
 140         saver = new SaveTransactionTask(this);
 141
 142         String date = text_date.getText().toString();
 143         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 144         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 145
 146         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 147         for (int i = 0; i < table.getChildCount(); i++) {
 148             TableRow row = (TableRow) table.getChildAt(i);
 149             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 150             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 151             LedgerTransactionAccount item =
 152                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 153                                      : new LedgerTransactionAccount(acc);
 154
 155             tr.addAccount(item);
 156         }
 157         saver.execute(tr);
 158     }
 159
 160     private void toggle_all_editing(boolean enabled) {
 161         text_date.setEnabled(enabled);
 162         text_descr.setEnabled(enabled);
 163         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 164         for (int i = 0; i < table.getChildCount(); i++) {
 165             TableRow row = (TableRow) table.getChildAt(i);
 166             for (int j = 0; j < row.getChildCount(); j++) {
 167                 row.getChildAt(j).setEnabled(enabled);
 168             }
 169         }
 170     }
 171
 172     private void hook_swipe_listener(final TableRow row) {
 173         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 174             public void onSwipeLeft() {
 175 //                Log.d("swipe", "LEFT" + row.getId());
 176                 if (table.getChildCount() > 2) {
 177                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 178                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 179                     TextView prev_amt =
 180                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 181                     TextView next_acc =
 182                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 183
 184                     if (next_acc == null) {
 185                         prev_amt.setNextFocusRightId(R.id.none);
 186                         prev_amt.setNextFocusForwardId(R.id.none);
 187                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 188                     }
 189                     else {
 190                         prev_amt.setNextFocusRightId(next_acc.getId());
 191                         prev_amt.setNextFocusForwardId(next_acc.getId());
 192                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 193                     }
 194
 195                     if (row.hasFocus()) {
 196                         if (next_acc != null) next_acc.requestFocus();
 197                         else prev_amt.requestFocus();
 198                     }
 199
 200                     table.removeView(row);
 201                     check_transaction_submittable();
 202 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 203                 }
 204                 else {
 205                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 206                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 207                 }
 208             }
 209             //            @Override
 210 //            public boolean performClick(View view, MotionEvent m) {
 211 //                return true;
 212 //            }
 213             public boolean onTouch(View view, MotionEvent m) {
 214                 return gestureDetector.onTouchEvent(m);
 215             }
 216         });
 217     }
 218
 219     private void hook_text_change_listener(final TextView view) {
 220         view.addTextChangedListener(new TextWatcher() {
 221             @Override
 222             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 223
 224             }
 225
 226             @Override
 227             public void onTextChanged(CharSequence s, int start, int before, int count) {
 228
 229             }
 230
 231             @Override
 232             public void afterTextChanged(Editable s) {
 233 //                Log.d("input", "text changed");
 234                 check_transaction_submittable();
 235             }
 236         });
 237
 238     }
 239
 240     public boolean onCreateOptionsMenu(Menu menu) {
 241         // Inflate the menu; this adds items to the action bar if it is present.
 242         getMenuInflater().inflate(R.menu.new_transaction, menu);
 243         mSave = menu.findItem(R.id.action_submit_transaction);
 244         if (mSave == null) throw new AssertionError();
 245
 246         check_transaction_submittable();
 247
 248         return true;
 249     }
 250
 251     public void pickTransactionDate(View view) {
 252         DialogFragment picker = new DatePickerFragment();
 253         picker.show(getSupportFragmentManager(), "datePicker");
 254     }
 255
 256     public int dp2px(float dp) {
 257         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 258                 getResources().getDisplayMetrics()));
 259     }
 260
 261     private void do_add_account_row(boolean focus) {
 262         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 263         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 264                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 265         acc.setHint(R.string.new_transaction_account_hint);
 266         acc.setWidth(0);
 267         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 268                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 269         acc.setSingleLine(true);
 270
 271         final EditText amt = new EditText(this);
 272         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 273                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 274         amt.setHint(R.string.new_transaction_amount_hint);
 275         amt.setWidth(0);
 276         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 277                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 278         amt.setMinWidth(dp2px(40));
 279         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 280         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 281
 282         // forward navigation support
 283         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 284         final TextView last_amt = (TextView) last_row.getChildAt(1);
 285         last_amt.setNextFocusForwardId(acc.getId());
 286         last_amt.setNextFocusRightId(acc.getId());
 287         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 288         acc.setNextFocusForwardId(amt.getId());
 289         acc.setNextFocusRightId(amt.getId());
 290
 291         final TableRow row = new TableRow(this);
 292         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 293                 TableRow.LayoutParams.MATCH_PARENT));
 294         row.setGravity(Gravity.BOTTOM);
 295         row.addView(acc);
 296         row.addView(amt);
 297         table.addView(row);
 298
 299         if (focus) acc.requestFocus();
 300
 301         hook_swipe_listener(row);
 302         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true);
 303         hook_text_change_listener(acc);
 304         hook_text_change_listener(amt);
 305     }
 306
 307     public void addTransactionAccountFromMenu(MenuItem item) {
 308         do_add_account_row(true);
 309     }
 310
 311     public void resetTransactionFromMenu(MenuItem item) {
 312         reset_form();
 313     }
 314
 315     public void saveTransactionFromMenu(MenuItem item) {
 316         save_transaction();
 317     }
 318
 319     private boolean is_zero(float f) {
 320         return (f < 0.005) && (f > -0.005);
 321     }
 322
 323     // rules:
 324     // 1) at least two account names
 325     // 2) each amount must have account name
 326     // 3) amounts must balance to 0, or
 327     // 3a) there must be exactly one empty amount
 328     // 4) empty accounts with empty amounts are ignored
 329     // 5) a row with an empty account name or empty amount is guaranteed to exist
 330     @SuppressLint("DefaultLocale")
 331     private void check_transaction_submittable() {
 332         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 333         int accounts = 0;
 334         int accounts_with_values = 0;
 335         int amounts = 0;
 336         int amounts_with_accounts = 0;
 337         int empty_rows = 0;
 338         TextView empty_amount = null;
 339         boolean single_empty_amount = false;
 340         boolean single_empty_amount_has_account = false;
 341         float running_total = 0f;
 342         boolean have_description =
 343                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 344                         .isEmpty();
 345
 346         try {
 347             for (int i = 0; i < table.getChildCount(); i++) {
 348                 TableRow row = (TableRow) table.getChildAt(i);
 349
 350                 TextView acc_name_v = (TextView) row.getChildAt(0);
 351                 TextView amount_v = (TextView) row.getChildAt(1);
 352                 String amt = String.valueOf(amount_v.getText());
 353                 String acc_name = String.valueOf(acc_name_v.getText());
 354                 acc_name = acc_name.trim();
 355
 356                 if (!acc_name.isEmpty()) {
 357                     accounts++;
 358
 359                     if (!amt.isEmpty()) {
 360                         accounts_with_values++;
 361                     }
 362                 }
 363                 else empty_rows++;
 364
 365                 if (amt.isEmpty()) {
 366                     amount_v.setHint(String.format("%1.2f", 0f));
 367                     if (empty_amount == null) {
 368                         empty_amount = amount_v;
 369                         single_empty_amount = true;
 370                         single_empty_amount_has_account = !acc_name.isEmpty();
 371                     }
 372                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 373                 }
 374                 else {
 375                     amounts++;
 376                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 377                     running_total += Float.valueOf(amt);
 378                 }
 379             }
 380
 381             if ((empty_rows == 0) &&
 382                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 383             {
 384                 do_add_account_row(false);
 385             }
 386
 387             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 388                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 389                                                "single_empty_with_acc=%s", accounts,
 390                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 391                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 392
 393             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 394                 (amounts_with_accounts == amounts) &&
 395                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
 396             {
 397                 if (mSave != null) mSave.setVisible(true);
 398             }
 399             else if (mSave != null) mSave.setVisible(false);
 400
 401             if (single_empty_amount) {
 402                 empty_amount.setHint(String.format("%1.2f",
 403                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 404             }
 405
 406         }
 407         catch (NumberFormatException e) {
 408             if (mSave != null) mSave.setVisible(false);
 409         }
 410         catch (Exception e) {
 411             e.printStackTrace();
 412             if (mSave != null) mSave.setVisible(false);
 413         }
 414     }
 415
 416     @Override
 417     public void done(String error) {
 418         progress.setVisibility(View.INVISIBLE);
 419         Log.d("visuals", "hiding progress");
 420
 421         if (error == null) reset_form();
 422         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 423                 BaseTransientBottomBar.LENGTH_LONG).show();
 424
 425         toggle_all_editing(true);
 426         check_transaction_submittable();
 427     }
 428
 429     private void reset_form() {
 430         text_date.setText("");
 431         text_descr.setText("");
 432
 433         text_descr.requestFocus();
 434
 435         while (table.getChildCount() > 2) {
 436             table.removeViewAt(2);
 437         }
 438         for (int i = 0; i < 2; i++) {
 439             TableRow tr = (TableRow) table.getChildAt(i);
 440             if (tr == null) break;
 441
 442             ((TextView) tr.getChildAt(0)).setText("");
 443             ((TextView) tr.getChildAt(1)).setText("");
 444         }
 445     }
 446 }