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((v, hasFocus) -> {
  86             if (hasFocus) pickTransactionDate(v);
  87         });
  88         text_descr = findViewById(R.id.new_transaction_description);
  89         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
  90                 "description", false, findViewById(R.id.new_transaction_acc_1));
  91         hook_text_change_listener(text_descr);
  92
  93         progress = findViewById(R.id.save_transaction_progress);
  94
  95         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  96         table = findViewById(R.id.new_transaction_accounts_table);
  97         for (int i = 0; i < table.getChildCount(); i++) {
  98             TableRow row = (TableRow) table.getChildAt(i);
  99             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
 100             TextView amount_view = (TextView) row.getChildAt(1);
 101             hook_swipe_listener(row);
 102             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name", true,
 103                     amount_view);
 104             hook_text_change_listener(acc_name_view);
 105             hook_text_change_listener(amount_view);
 106 //            Log.d("swipe", "hooked to row "+i);
 107         }
 108     }
 109
 110     @Override
 111     protected void onStart() {
 112         super.onStart();
 113         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
 114     }
 115
 116     @Override
 117     public void finish() {
 118         super.finish();
 119         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 120     }
 121
 122     @Override
 123     public boolean onOptionsItemSelected(MenuItem item) {
 124         switch (item.getItemId()) {
 125             case android.R.id.home:
 126                 finish();
 127                 return true;
 128         }
 129         return super.onOptionsItemSelected(item);
 130     }
 131
 132     public void save_transaction() {
 133         if (mSave != null) mSave.setVisible(false);
 134         toggle_all_editing(false);
 135         progress.setVisibility(View.VISIBLE);
 136
 137         saver = new SaveTransactionTask(this);
 138
 139         String date = text_date.getText().toString();
 140         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 141         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 142
 143         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 144         for (int i = 0; i < table.getChildCount(); i++) {
 145             TableRow row = (TableRow) table.getChildAt(i);
 146             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 147             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 148             LedgerTransactionAccount item =
 149                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 150                                      : new LedgerTransactionAccount(acc);
 151
 152             tr.addAccount(item);
 153         }
 154         saver.execute(tr);
 155     }
 156
 157     private void toggle_all_editing(boolean enabled) {
 158         text_date.setEnabled(enabled);
 159         text_descr.setEnabled(enabled);
 160         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 161         for (int i = 0; i < table.getChildCount(); i++) {
 162             TableRow row = (TableRow) table.getChildAt(i);
 163             for (int j = 0; j < row.getChildCount(); j++) {
 164                 row.getChildAt(j).setEnabled(enabled);
 165             }
 166         }
 167     }
 168
 169     private void hook_swipe_listener(final TableRow row) {
 170         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 171             public void onSwipeLeft() {
 172 //                Log.d("swipe", "LEFT" + row.getId());
 173                 if (table.getChildCount() > 2) {
 174                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 175                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 176                     TextView prev_amt =
 177                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 178                     TextView next_acc =
 179                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 180
 181                     if (next_acc == null) {
 182                         prev_amt.setNextFocusRightId(R.id.none);
 183                         prev_amt.setNextFocusForwardId(R.id.none);
 184                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 185                     }
 186                     else {
 187                         prev_amt.setNextFocusRightId(next_acc.getId());
 188                         prev_amt.setNextFocusForwardId(next_acc.getId());
 189                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 190                     }
 191
 192                     if (row.hasFocus()) {
 193                         if (next_acc != null) next_acc.requestFocus();
 194                         else prev_amt.requestFocus();
 195                     }
 196
 197                     table.removeView(row);
 198                     check_transaction_submittable();
 199 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 200                 }
 201                 else {
 202                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 203                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 204                 }
 205             }
 206             //            @Override
 207 //            public boolean performClick(View view, MotionEvent m) {
 208 //                return true;
 209 //            }
 210             public boolean onTouch(View view, MotionEvent m) {
 211                 return gestureDetector.onTouchEvent(m);
 212             }
 213         });
 214     }
 215
 216     private void hook_text_change_listener(final TextView view) {
 217         view.addTextChangedListener(new TextWatcher() {
 218             @Override
 219             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 220
 221             }
 222
 223             @Override
 224             public void onTextChanged(CharSequence s, int start, int before, int count) {
 225
 226             }
 227
 228             @Override
 229             public void afterTextChanged(Editable s) {
 230 //                Log.d("input", "text changed");
 231                 check_transaction_submittable();
 232             }
 233         });
 234
 235     }
 236
 237     public boolean onCreateOptionsMenu(Menu menu) {
 238         // Inflate the menu; this adds items to the action bar if it is present.
 239         getMenuInflater().inflate(R.menu.new_transaction, menu);
 240         mSave = menu.findItem(R.id.action_submit_transaction);
 241         if (mSave == null) throw new AssertionError();
 242
 243         check_transaction_submittable();
 244
 245         return true;
 246     }
 247
 248     public void pickTransactionDate(View view) {
 249         DialogFragment picker = new DatePickerFragment();
 250         picker.show(getSupportFragmentManager(), "datePicker");
 251     }
 252
 253     public int dp2px(float dp) {
 254         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 255                 getResources().getDisplayMetrics()));
 256     }
 257
 258     private void do_add_account_row(boolean focus) {
 259         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 260         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 261                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 262         acc.setHint(R.string.new_transaction_account_hint);
 263         acc.setWidth(0);
 264         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 265                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 266         acc.setSingleLine(true);
 267
 268         final EditText amt = new EditText(this);
 269         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 270                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 271         amt.setHint(R.string.new_transaction_amount_hint);
 272         amt.setWidth(0);
 273         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 274                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 275         amt.setMinWidth(dp2px(40));
 276         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 277         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 278
 279         // forward navigation support
 280         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 281         final TextView last_amt = (TextView) last_row.getChildAt(1);
 282         last_amt.setNextFocusForwardId(acc.getId());
 283         last_amt.setNextFocusRightId(acc.getId());
 284         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 285         acc.setNextFocusForwardId(amt.getId());
 286         acc.setNextFocusRightId(amt.getId());
 287
 288         final TableRow row = new TableRow(this);
 289         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 290                 TableRow.LayoutParams.MATCH_PARENT));
 291         row.setGravity(Gravity.BOTTOM);
 292         row.addView(acc);
 293         row.addView(amt);
 294         table.addView(row);
 295
 296         if (focus) acc.requestFocus();
 297
 298         hook_swipe_listener(row);
 299         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt);
 300         hook_text_change_listener(acc);
 301         hook_text_change_listener(amt);
 302     }
 303
 304     public void addTransactionAccountFromMenu(MenuItem item) {
 305         do_add_account_row(true);
 306     }
 307
 308     public void resetTransactionFromMenu(MenuItem item) {
 309         reset_form();
 310     }
 311
 312     public void saveTransactionFromMenu(MenuItem item) {
 313         save_transaction();
 314     }
 315
 316     private boolean is_zero(float f) {
 317         return (f < 0.005) && (f > -0.005);
 318     }
 319
 320     // rules:
 321     // 1) at least two account names
 322     // 2) each amount must have account name
 323     // 3) amounts must balance to 0, or
 324     // 3a) there must be exactly one empty amount
 325     // 4) empty accounts with empty amounts are ignored
 326     // 5) a row with an empty account name or empty amount is guaranteed to exist
 327     @SuppressLint("DefaultLocale")
 328     private void check_transaction_submittable() {
 329         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 330         int accounts = 0;
 331         int accounts_with_values = 0;
 332         int amounts = 0;
 333         int amounts_with_accounts = 0;
 334         int empty_rows = 0;
 335         TextView empty_amount = null;
 336         boolean single_empty_amount = false;
 337         boolean single_empty_amount_has_account = false;
 338         float running_total = 0f;
 339         boolean have_description =
 340                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 341                         .isEmpty();
 342
 343         try {
 344             for (int i = 0; i < table.getChildCount(); i++) {
 345                 TableRow row = (TableRow) table.getChildAt(i);
 346
 347                 TextView acc_name_v = (TextView) row.getChildAt(0);
 348                 TextView amount_v = (TextView) row.getChildAt(1);
 349                 String amt = String.valueOf(amount_v.getText());
 350                 String acc_name = String.valueOf(acc_name_v.getText());
 351                 acc_name = acc_name.trim();
 352
 353                 if (!acc_name.isEmpty()) {
 354                     accounts++;
 355
 356                     if (!amt.isEmpty()) {
 357                         accounts_with_values++;
 358                     }
 359                 }
 360                 else empty_rows++;
 361
 362                 if (amt.isEmpty()) {
 363                     amount_v.setHint(String.format("%1.2f", 0f));
 364                     if (empty_amount == null) {
 365                         empty_amount = amount_v;
 366                         single_empty_amount = true;
 367                         single_empty_amount_has_account = !acc_name.isEmpty();
 368                     }
 369                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 370                 }
 371                 else {
 372                     amounts++;
 373                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 374                     running_total += Float.valueOf(amt);
 375                 }
 376             }
 377
 378             if ((empty_rows == 0) &&
 379                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 380             {
 381                 do_add_account_row(false);
 382             }
 383
 384             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 385                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 386                                                "single_empty_with_acc=%s", accounts,
 387                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 388                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 389
 390             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 391                 (amounts_with_accounts == amounts) &&
 392                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
 393             {
 394                 if (mSave != null) mSave.setVisible(true);
 395             }
 396             else if (mSave != null) mSave.setVisible(false);
 397
 398             if (single_empty_amount) {
 399                 empty_amount.setHint(String.format("%1.2f",
 400                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 401             }
 402
 403         }
 404         catch (NumberFormatException e) {
 405             if (mSave != null) mSave.setVisible(false);
 406         }
 407         catch (Exception e) {
 408             e.printStackTrace();
 409             if (mSave != null) mSave.setVisible(false);
 410         }
 411     }
 412
 413     @Override
 414     public void done(String error) {
 415         progress.setVisibility(View.INVISIBLE);
 416         Log.d("visuals", "hiding progress");
 417
 418         if (error == null) reset_form();
 419         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 420                 BaseTransientBottomBar.LENGTH_LONG).show();
 421
 422         toggle_all_editing(true);
 423         check_transaction_submittable();
 424     }
 425
 426     private void reset_form() {
 427         text_date.setText("");
 428         text_descr.setText("");
 429
 430         text_descr.requestFocus();
 431
 432         while (table.getChildCount() > 2) {
 433             table.removeViewAt(2);
 434         }
 435         for (int i = 0; i < 2; i++) {
 436             TableRow tr = (TableRow) table.getChildAt(i);
 437             if (tr == null) break;
 438
 439             ((TextView) tr.getChildAt(0)).setText("");
 440             ((TextView) tr.getChildAt(1)).setText("");
 441         }
 442     }
 443 }