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

   1 /*
   2  * Copyright © 2018 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.preference.PreferenceManager;
  23 import android.support.design.widget.BaseTransientBottomBar;
  24 import android.support.design.widget.Snackbar;
  25 import android.support.v4.app.DialogFragment;
  26 import android.support.v7.app.AppCompatActivity;
  27 import android.support.v7.widget.Toolbar;
  28 import android.text.Editable;
  29 import android.text.InputType;
  30 import android.text.TextWatcher;
  31 import android.util.Log;
  32 import android.util.TypedValue;
  33 import android.view.Gravity;
  34 import android.view.Menu;
  35 import android.view.MenuItem;
  36 import android.view.MotionEvent;
  37 import android.view.View;
  38 import android.view.inputmethod.EditorInfo;
  39 import android.widget.AutoCompleteTextView;
  40 import android.widget.EditText;
  41 import android.widget.ProgressBar;
  42 import android.widget.TableLayout;
  43 import android.widget.TableRow;
  44 import android.widget.TextView;
  45
  46 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  47 import net.ktnx.mobileledger.R;
  48 import net.ktnx.mobileledger.async.SaveTransactionTask;
  49 import net.ktnx.mobileledger.async.TaskCallback;
  50 import net.ktnx.mobileledger.model.LedgerTransaction;
  51 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  52 import net.ktnx.mobileledger.ui.DatePickerFragment;
  53 import net.ktnx.mobileledger.utils.MLDB;
  54
  55 import java.util.Date;
  56 import java.util.Objects;
  57
  58 /*
  59  * TODO: nicer progress while transaction is submitted
  60  * TODO: latest transactions, maybe with browsing further in the past?
  61  * TODO: reports
  62  * TODO: get rid of the custom session/cookie and auth code?
  63  *         (the last problem with the POST was the missing content-length header)
  64  * TODO: app icon
  65  * TODO: nicer swiping removal with visual feedback
  66  * TODO: setup wizard
  67  * TODO: update accounts/check settings upon change of backend settings
  68  *  */
  69
  70 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
  71     private static SaveTransactionTask saver;
  72     private TableLayout table;
  73     private ProgressBar progress;
  74     private TextView text_date;
  75     private AutoCompleteTextView text_descr;
  76     private MenuItem mSave;
  77
  78     @Override
  79     protected void onCreate(Bundle savedInstanceState) {
  80         super.onCreate(savedInstanceState);
  81         setContentView(R.layout.activity_new_transaction);
  82         Toolbar toolbar = findViewById(R.id.toolbar);
  83         setSupportActionBar(toolbar);
  84
  85         text_date = findViewById(R.id.new_transaction_date);
  86         text_date.setOnFocusChangeListener(new View.OnFocusChangeListener() {
  87             @Override
  88             public void onFocusChange(View v, boolean hasFocus) {
  89                 if (hasFocus) pickTransactionDate(v);
  90             }
  91         });
  92         text_descr = findViewById(R.id.new_transaction_description);
  93         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
  94                 "description");
  95         hook_text_change_listener(text_descr);
  96
  97         progress = findViewById(R.id.save_transaction_progress);
  98
  99         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 100         table = findViewById(R.id.new_transaction_accounts_table);
 101         for (int i = 0; i < table.getChildCount(); i++) {
 102             TableRow row = (TableRow) table.getChildAt(i);
 103             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
 104             TextView amount_view = (TextView) row.getChildAt(1);
 105             hook_swipe_listener(row);
 106             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name");
 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         saver.setPref(PreferenceManager.getDefaultSharedPreferences(this));
 143         String date = text_date.getText().toString();
 144         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 145         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 146
 147         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 148         for (int i = 0; i < table.getChildCount(); i++) {
 149             TableRow row = (TableRow) table.getChildAt(i);
 150             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 151             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 152             LedgerTransactionAccount item =
 153                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 154                                      : new LedgerTransactionAccount(acc);
 155
 156             tr.addAccount(item);
 157         }
 158         saver.execute(tr);
 159     }
 160
 161     private void toggle_all_editing(boolean enabled) {
 162         text_date.setEnabled(enabled);
 163         text_descr.setEnabled(enabled);
 164         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 165         for (int i = 0; i < table.getChildCount(); i++) {
 166             TableRow row = (TableRow) table.getChildAt(i);
 167             for (int j = 0; j < row.getChildCount(); j++) {
 168                 row.getChildAt(j).setEnabled(enabled);
 169             }
 170         }
 171     }
 172
 173     private void hook_swipe_listener(final TableRow row) {
 174         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 175             public void onSwipeLeft() {
 176 //                Log.d("swipe", "LEFT" + row.getId());
 177                 if (table.getChildCount() > 2) {
 178                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 179                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 180                     TextView prev_amt =
 181                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 182                     TextView next_acc =
 183                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 184
 185                     if (next_acc == null) {
 186                         prev_amt.setNextFocusRightId(R.id.none);
 187                         prev_amt.setNextFocusForwardId(R.id.none);
 188                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 189                     }
 190                     else {
 191                         prev_amt.setNextFocusRightId(next_acc.getId());
 192                         prev_amt.setNextFocusForwardId(next_acc.getId());
 193                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 194                     }
 195
 196                     if (row.hasFocus()) {
 197                         if (next_acc != null) next_acc.requestFocus();
 198                         else prev_amt.requestFocus();
 199                     }
 200
 201                     table.removeView(row);
 202                     check_transaction_submittable();
 203 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 204                 }
 205                 else {
 206                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 207                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 208                 }
 209             }
 210             //            @Override
 211 //            public boolean performClick(View view, MotionEvent m) {
 212 //                return true;
 213 //            }
 214             public boolean onTouch(View view, MotionEvent m) {
 215                 return gestureDetector.onTouchEvent(m);
 216             }
 217         });
 218     }
 219
 220     private void hook_text_change_listener(final TextView view) {
 221         view.addTextChangedListener(new TextWatcher() {
 222             @Override
 223             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 224
 225             }
 226
 227             @Override
 228             public void onTextChanged(CharSequence s, int start, int before, int count) {
 229
 230             }
 231
 232             @Override
 233             public void afterTextChanged(Editable s) {
 234 //                Log.d("input", "text changed");
 235                 check_transaction_submittable();
 236             }
 237         });
 238
 239     }
 240
 241     public boolean onCreateOptionsMenu(Menu menu) {
 242         // Inflate the menu; this adds items to the action bar if it is present.
 243         getMenuInflater().inflate(R.menu.new_transaction, menu);
 244         mSave = menu.findItem(R.id.action_submit_transaction);
 245         if (mSave == null) throw new AssertionError();
 246
 247         check_transaction_submittable();
 248
 249         return true;
 250     }
 251
 252     public void pickTransactionDate(View view) {
 253         DialogFragment picker = new DatePickerFragment();
 254         picker.show(getSupportFragmentManager(), "datePicker");
 255     }
 256
 257     public int dp2px(float dp) {
 258         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 259                 getResources().getDisplayMetrics()));
 260     }
 261
 262     private void do_add_account_row(boolean focus) {
 263         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 264         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 265                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 266         acc.setHint(R.string.new_transaction_account_hint);
 267         acc.setWidth(0);
 268         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 269                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 270         acc.setSingleLine(true);
 271
 272         final EditText amt = new EditText(this);
 273         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 274                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 275         amt.setHint(R.string.new_transaction_amount_hint);
 276         amt.setWidth(0);
 277         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 278                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 279         amt.setMinWidth(dp2px(40));
 280         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 281         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 282
 283         // forward navigation support
 284         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 285         final TextView last_amt = (TextView) last_row.getChildAt(1);
 286         last_amt.setNextFocusForwardId(acc.getId());
 287         last_amt.setNextFocusRightId(acc.getId());
 288         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 289         acc.setNextFocusForwardId(amt.getId());
 290         acc.setNextFocusRightId(amt.getId());
 291
 292         final TableRow row = new TableRow(this);
 293         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 294                 TableRow.LayoutParams.MATCH_PARENT));
 295         row.setGravity(Gravity.BOTTOM);
 296         row.addView(acc);
 297         row.addView(amt);
 298         table.addView(row);
 299
 300         if (focus) acc.requestFocus();
 301
 302         hook_swipe_listener(row);
 303         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name");
 304         hook_text_change_listener(acc);
 305         hook_text_change_listener(amt);
 306     }
 307
 308     public void addTransactionAccountFromMenu(MenuItem item) {
 309         do_add_account_row(true);
 310     }
 311
 312     public void resetTransactionFromMenu(MenuItem item) {
 313         reset_form();
 314     }
 315
 316     public void saveTransactionFromMenu(MenuItem item) {
 317         save_transaction();
 318     }
 319
 320     private boolean is_zero(float f) {
 321         return (f < 0.005) && (f > -0.005);
 322     }
 323
 324     // rules:
 325     // 1) at least two account names
 326     // 2) each amount must have account name
 327     // 3) amounts must balance to 0, or
 328     // 3a) there must be exactly one empty amount
 329     // 4) empty accounts with empty amounts are ignored
 330     // 5) a row with an empty account name or empty amount is guaranteed to exist
 331     @SuppressLint("DefaultLocale")
 332     private void check_transaction_submittable() {
 333         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 334         int accounts = 0;
 335         int accounts_with_values = 0;
 336         int amounts = 0;
 337         int amounts_with_accounts = 0;
 338         int empty_rows = 0;
 339         TextView empty_amount = null;
 340         boolean single_empty_amount = false;
 341         boolean single_empty_amount_has_account = false;
 342         float running_total = 0f;
 343         boolean have_description =
 344                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 345                         .isEmpty();
 346
 347         try {
 348             for (int i = 0; i < table.getChildCount(); i++) {
 349                 TableRow row = (TableRow) table.getChildAt(i);
 350
 351                 TextView acc_name_v = (TextView) row.getChildAt(0);
 352                 TextView amount_v = (TextView) row.getChildAt(1);
 353                 String amt = String.valueOf(amount_v.getText());
 354                 String acc_name = String.valueOf(acc_name_v.getText());
 355                 acc_name = acc_name.trim();
 356
 357                 if (!acc_name.isEmpty()) {
 358                     accounts++;
 359
 360                     if (!amt.isEmpty()) {
 361                         accounts_with_values++;
 362                     }
 363                 }
 364                 else empty_rows++;
 365
 366                 if (amt.isEmpty()) {
 367                     amount_v.setHint(String.format("%1.2f", 0f));
 368                     if (empty_amount == null) {
 369                         empty_amount = amount_v;
 370                         single_empty_amount = true;
 371                         single_empty_amount_has_account = !acc_name.isEmpty();
 372                     }
 373                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 374                 }
 375                 else {
 376                     amounts++;
 377                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 378                     running_total += Float.valueOf(amt);
 379                 }
 380             }
 381
 382             if ((empty_rows == 0) &&
 383                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 384             {
 385                 do_add_account_row(false);
 386             }
 387
 388             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 389                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 390                                                "single_empty_with_acc=%s", accounts,
 391                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 392                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 393
 394             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 395                 (amounts_with_accounts == amounts) &&
 396                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
 397             {
 398                 if (mSave != null) mSave.setVisible(true);
 399             }
 400             else if (mSave != null) mSave.setVisible(false);
 401
 402             if (single_empty_amount) {
 403                 empty_amount.setHint(String.format("%1.2f",
 404                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 405             }
 406
 407         }
 408         catch (NumberFormatException e) {
 409             if (mSave != null) mSave.setVisible(false);
 410         }
 411         catch (Exception e) {
 412             e.printStackTrace();
 413             if (mSave != null) mSave.setVisible(false);
 414         }
 415     }
 416
 417     @Override
 418     public void done(String error) {
 419         progress.setVisibility(View.INVISIBLE);
 420         Log.d("visuals", "hiding progress");
 421
 422         if (error == null) reset_form();
 423         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 424                 BaseTransientBottomBar.LENGTH_LONG).show();
 425
 426         toggle_all_editing(true);
 427         check_transaction_submittable();
 428     }
 429
 430     private void reset_form() {
 431         text_date.setText("");
 432         text_descr.setText("");
 433
 434         text_descr.requestFocus();
 435
 436         while (table.getChildCount() > 2) {
 437             table.removeViewAt(2);
 438         }
 439         for (int i = 0; i < 2; i++) {
 440             TableRow tr = (TableRow) table.getChildAt(i);
 441             if (tr == null) break;
 442
 443             ((TextView) tr.getChildAt(0)).setText("");
 444             ((TextView) tr.getChildAt(1)).setText("");
 445         }
 446     }
 447 }