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: reports
  60  * TODO: get rid of the custom session/cookie and auth code?
  61  *         (the last problem with the POST was the missing content-length header)
  62  * TODO: app icon
  63  * TODO: nicer swiping removal with visual feedback
  64  * TODO: setup wizard
  65  * TODO: update accounts/check settings upon change of backend settings
  66  *  */
  67
  68 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  69     private static SaveTransactionTask saver;
  70     private TableLayout table;
  71     private ProgressBar progress;
  72     private TextView text_date;
  73     private AutoCompleteTextView text_descr;
  74     private MenuItem mSave;
  75
  76     @Override
  77     protected void onCreate(Bundle savedInstanceState) {
  78         super.onCreate(savedInstanceState);
  79         setContentView(R.layout.activity_new_transaction);
  80         Toolbar toolbar = findViewById(R.id.toolbar);
  81         setSupportActionBar(toolbar);
  82
  83         text_date = findViewById(R.id.new_transaction_date);
  84         text_date.setOnFocusChangeListener((v, hasFocus) -> {
  85             if (hasFocus) pickTransactionDate(v);
  86         });
  87         text_descr = findViewById(R.id.new_transaction_description);
  88         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
  89                 "description", false, findViewById(R.id.new_transaction_acc_1));
  90         hook_text_change_listener(text_descr);
  91
  92         progress = findViewById(R.id.save_transaction_progress);
  93
  94         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  95         table = findViewById(R.id.new_transaction_accounts_table);
  96         for (int i = 0; i < table.getChildCount(); i++) {
  97             TableRow row = (TableRow) table.getChildAt(i);
  98             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
  99             TextView amount_view = (TextView) row.getChildAt(1);
 100             hook_swipe_listener(row);
 101             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name", true,
 102                     amount_view);
 103             hook_text_change_listener(acc_name_view);
 104             hook_text_change_listener(amount_view);
 105 //            Log.d("swipe", "hooked to row "+i);
 106         }
 107     }
 108
 109     @Override
 110     protected void onStart() {
 111         super.onStart();
 112         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
 113     }
 114
 115     @Override
 116     public void finish() {
 117         super.finish();
 118         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 119     }
 120
 121     @Override
 122     public boolean onOptionsItemSelected(MenuItem item) {
 123         switch (item.getItemId()) {
 124             case android.R.id.home:
 125                 finish();
 126                 return true;
 127         }
 128         return super.onOptionsItemSelected(item);
 129     }
 130
 131     public void save_transaction() {
 132         if (mSave != null) mSave.setVisible(false);
 133         toggle_all_editing(false);
 134         progress.setVisibility(View.VISIBLE);
 135
 136         saver = new SaveTransactionTask(this);
 137
 138         String date = text_date.getText().toString();
 139         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 140         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 141
 142         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 143         for (int i = 0; i < table.getChildCount(); i++) {
 144             TableRow row = (TableRow) table.getChildAt(i);
 145             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 146             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 147             LedgerTransactionAccount item =
 148                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 149                                      : new LedgerTransactionAccount(acc);
 150
 151             tr.addAccount(item);
 152         }
 153         saver.execute(tr);
 154     }
 155
 156     private void toggle_all_editing(boolean enabled) {
 157         text_date.setEnabled(enabled);
 158         text_descr.setEnabled(enabled);
 159         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 160         for (int i = 0; i < table.getChildCount(); i++) {
 161             TableRow row = (TableRow) table.getChildAt(i);
 162             for (int j = 0; j < row.getChildCount(); j++) {
 163                 row.getChildAt(j).setEnabled(enabled);
 164             }
 165         }
 166     }
 167
 168     private void hook_swipe_listener(final TableRow row) {
 169         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 170             public void onSwipeLeft() {
 171 //                Log.d("swipe", "LEFT" + row.getId());
 172                 if (table.getChildCount() > 2) {
 173                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 174                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 175                     TextView prev_amt =
 176                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 177                     TextView next_acc =
 178                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 179
 180                     if (next_acc == null) {
 181                         prev_amt.setNextFocusRightId(R.id.none);
 182                         prev_amt.setNextFocusForwardId(R.id.none);
 183                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 184                     }
 185                     else {
 186                         prev_amt.setNextFocusRightId(next_acc.getId());
 187                         prev_amt.setNextFocusForwardId(next_acc.getId());
 188                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 189                     }
 190
 191                     if (row.hasFocus()) {
 192                         if (next_acc != null) next_acc.requestFocus();
 193                         else prev_amt.requestFocus();
 194                     }
 195
 196                     table.removeView(row);
 197                     check_transaction_submittable();
 198 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 199                 }
 200                 else {
 201                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 202                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 203                 }
 204             }
 205             //            @Override
 206 //            public boolean performClick(View view, MotionEvent m) {
 207 //                return true;
 208 //            }
 209             public boolean onTouch(View view, MotionEvent m) {
 210                 return gestureDetector.onTouchEvent(m);
 211             }
 212         });
 213     }
 214
 215     private void hook_text_change_listener(final TextView view) {
 216         view.addTextChangedListener(new TextWatcher() {
 217             @Override
 218             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 219
 220             }
 221
 222             @Override
 223             public void onTextChanged(CharSequence s, int start, int before, int count) {
 224
 225             }
 226
 227             @Override
 228             public void afterTextChanged(Editable s) {
 229 //                Log.d("input", "text changed");
 230                 check_transaction_submittable();
 231             }
 232         });
 233
 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,
 254                 getResources().getDisplayMetrics()));
 255     }
 256
 257     private void do_add_account_row(boolean focus) {
 258         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 259         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 260                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 261         acc.setHint(R.string.new_transaction_account_hint);
 262         acc.setWidth(0);
 263         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 264                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 265         acc.setSingleLine(true);
 266
 267         final EditText amt = new EditText(this);
 268         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 269                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 270         amt.setHint(R.string.new_transaction_amount_hint);
 271         amt.setWidth(0);
 272         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 273                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 274         amt.setMinWidth(dp2px(40));
 275         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 276         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 277
 278         // forward navigation support
 279         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 280         final TextView last_amt = (TextView) last_row.getChildAt(1);
 281         last_amt.setNextFocusForwardId(acc.getId());
 282         last_amt.setNextFocusRightId(acc.getId());
 283         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 284         acc.setNextFocusForwardId(amt.getId());
 285         acc.setNextFocusRightId(amt.getId());
 286
 287         final TableRow row = new TableRow(this);
 288         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 289                 TableRow.LayoutParams.MATCH_PARENT));
 290         row.setGravity(Gravity.BOTTOM);
 291         row.addView(acc);
 292         row.addView(amt);
 293         table.addView(row);
 294
 295         if (focus) acc.requestFocus();
 296
 297         hook_swipe_listener(row);
 298         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt);
 299         hook_text_change_listener(acc);
 300         hook_text_change_listener(amt);
 301     }
 302
 303     public void addTransactionAccountFromMenu(MenuItem item) {
 304         do_add_account_row(true);
 305     }
 306
 307     public void resetTransactionFromMenu(MenuItem item) {
 308         reset_form();
 309     }
 310
 311     public void saveTransactionFromMenu(MenuItem item) {
 312         save_transaction();
 313     }
 314
 315     private boolean is_zero(float f) {
 316         return (f < 0.005) && (f > -0.005);
 317     }
 318
 319     // rules:
 320     // 1) at least two account names
 321     // 2) each amount must have account name
 322     // 3) amounts must balance to 0, or
 323     // 3a) there must be exactly one empty amount
 324     // 4) empty accounts with empty amounts are ignored
 325     // 5) a row with an empty account name or empty amount is guaranteed to exist
 326     @SuppressLint("DefaultLocale")
 327     private void check_transaction_submittable() {
 328         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 329         int accounts = 0;
 330         int accounts_with_values = 0;
 331         int amounts = 0;
 332         int amounts_with_accounts = 0;
 333         int empty_rows = 0;
 334         TextView empty_amount = null;
 335         boolean single_empty_amount = false;
 336         boolean single_empty_amount_has_account = false;
 337         float running_total = 0f;
 338         boolean have_description =
 339                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 340                         .isEmpty();
 341
 342         try {
 343             for (int i = 0; i < table.getChildCount(); i++) {
 344                 TableRow row = (TableRow) table.getChildAt(i);
 345
 346                 TextView acc_name_v = (TextView) row.getChildAt(0);
 347                 TextView amount_v = (TextView) row.getChildAt(1);
 348                 String amt = String.valueOf(amount_v.getText());
 349                 String acc_name = String.valueOf(acc_name_v.getText());
 350                 acc_name = acc_name.trim();
 351
 352                 if (!acc_name.isEmpty()) {
 353                     accounts++;
 354
 355                     if (!amt.isEmpty()) {
 356                         accounts_with_values++;
 357                     }
 358                 }
 359                 else empty_rows++;
 360
 361                 if (amt.isEmpty()) {
 362                     amount_v.setHint(String.format("%1.2f", 0f));
 363                     if (empty_amount == null) {
 364                         empty_amount = amount_v;
 365                         single_empty_amount = true;
 366                         single_empty_amount_has_account = !acc_name.isEmpty();
 367                     }
 368                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 369                 }
 370                 else {
 371                     amounts++;
 372                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 373                     running_total += Float.valueOf(amt);
 374                 }
 375             }
 376
 377             if ((empty_rows == 0) &&
 378                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 379             {
 380                 do_add_account_row(false);
 381             }
 382
 383             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 384                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 385                                                "single_empty_with_acc=%s", accounts,
 386                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 387                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 388
 389             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 390                 (amounts_with_accounts == amounts) &&
 391                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
 392             {
 393                 if (mSave != null) mSave.setVisible(true);
 394             }
 395             else if (mSave != null) mSave.setVisible(false);
 396
 397             if (single_empty_amount) {
 398                 empty_amount.setHint(String.format("%1.2f",
 399                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 400             }
 401
 402         }
 403         catch (NumberFormatException e) {
 404             if (mSave != null) mSave.setVisible(false);
 405         }
 406         catch (Exception e) {
 407             e.printStackTrace();
 408             if (mSave != null) mSave.setVisible(false);
 409         }
 410     }
 411
 412     @Override
 413     public void done(String error) {
 414         progress.setVisibility(View.INVISIBLE);
 415         Log.d("visuals", "hiding progress");
 416
 417         if (error == null) reset_form();
 418         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 419                 BaseTransientBottomBar.LENGTH_LONG).show();
 420
 421         toggle_all_editing(true);
 422         check_transaction_submittable();
 423     }
 424
 425     private void reset_form() {
 426         text_date.setText("");
 427         text_descr.setText("");
 428
 429         text_descr.requestFocus();
 430
 431         while (table.getChildCount() > 2) {
 432             table.removeViewAt(2);
 433         }
 434         for (int i = 0; i < 2; i++) {
 435             TableRow tr = (TableRow) table.getChildAt(i);
 436             if (tr == null) break;
 437
 438             ((TextView) tr.getChildAt(0)).setText("");
 439             ((TextView) tr.getChildAt(1)).setText("");
 440         }
 441     }
 442 }