app/src/main/java/net/ktnx/mobileledger/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;
  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.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.utils.MLDB;
  52
  53 import java.util.Date;
  54 import java.util.Objects;
  55
  56 /*
  57  * TODO: nicer progress while transaction is submitted
  58  * TODO: latest transactions, maybe with browsing further in the past?
  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(new View.OnFocusChangeListener() {
  85             @Override
  86             public void onFocusChange(View v, boolean hasFocus) {
  87                 if (hasFocus) pickTransactionDate(v);
  88             }
  89         });
  90         text_descr = findViewById(R.id.new_transaction_description);
  91         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
  92                 "description");
  93         hook_text_change_listener(text_descr);
  94
  95         progress = findViewById(R.id.save_transaction_progress);
  96
  97         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  98         table = findViewById(R.id.new_transaction_accounts_table);
  99         for (int i = 0; i < table.getChildCount(); i++) {
 100             TableRow row = (TableRow) table.getChildAt(i);
 101             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
 102             TextView amount_view = (TextView) row.getChildAt(1);
 103             hook_swipe_listener(row);
 104             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name");
 105             hook_text_change_listener(acc_name_view);
 106             hook_text_change_listener(amount_view);
 107 //            Log.d("swipe", "hooked to row "+i);
 108         }
 109     }
 110
 111     @Override
 112     protected void onStart() {
 113         super.onStart();
 114         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
 115     }
 116
 117     @Override
 118     public void finish() {
 119         super.finish();
 120         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 121     }
 122
 123     @Override
 124     public boolean onOptionsItemSelected(MenuItem item) {
 125         switch (item.getItemId()) {
 126             case android.R.id.home:
 127                 finish();
 128                 return true;
 129         }
 130         return super.onOptionsItemSelected(item);
 131     }
 132
 133     public void save_transaction() {
 134         if (mSave != null) mSave.setVisible(false);
 135         toggle_all_editing(false);
 136         progress.setVisibility(View.VISIBLE);
 137
 138         saver = new SaveTransactionTask(this);
 139
 140         saver.setPref(PreferenceManager.getDefaultSharedPreferences(this));
 141         String date = text_date.getText().toString();
 142         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
 143         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
 144
 145         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 146         for (int i = 0; i < table.getChildCount(); i++) {
 147             TableRow row = (TableRow) table.getChildAt(i);
 148             String acc = ((TextView) row.getChildAt(0)).getText().toString();
 149             String amt = ((TextView) row.getChildAt(1)).getText().toString();
 150             LedgerTransactionAccount item =
 151                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 152                                      : new LedgerTransactionAccount(acc);
 153
 154             tr.addAccount(item);
 155         }
 156         saver.execute(tr);
 157     }
 158
 159     private void toggle_all_editing(boolean enabled) {
 160         text_date.setEnabled(enabled);
 161         text_descr.setEnabled(enabled);
 162         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 163         for (int i = 0; i < table.getChildCount(); i++) {
 164             TableRow row = (TableRow) table.getChildAt(i);
 165             for (int j = 0; j < row.getChildCount(); j++) {
 166                 row.getChildAt(j).setEnabled(enabled);
 167             }
 168         }
 169     }
 170
 171     private void hook_swipe_listener(final TableRow row) {
 172         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 173             public void onSwipeLeft() {
 174 //                Log.d("swipe", "LEFT" + row.getId());
 175                 if (table.getChildCount() > 2) {
 176                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 177                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 178                     TextView prev_amt =
 179                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
 180                     TextView next_acc =
 181                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 182
 183                     if (next_acc == null) {
 184                         prev_amt.setNextFocusRightId(R.id.none);
 185                         prev_amt.setNextFocusForwardId(R.id.none);
 186                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 187                     }
 188                     else {
 189                         prev_amt.setNextFocusRightId(next_acc.getId());
 190                         prev_amt.setNextFocusForwardId(next_acc.getId());
 191                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 192                     }
 193
 194                     if (row.hasFocus()) {
 195                         if (next_acc != null) next_acc.requestFocus();
 196                         else prev_amt.requestFocus();
 197                     }
 198
 199                     table.removeView(row);
 200                     check_transaction_submittable();
 201 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 202                 }
 203                 else {
 204                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 205                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 206                 }
 207             }
 208             //            @Override
 209 //            public boolean performClick(View view, MotionEvent m) {
 210 //                return true;
 211 //            }
 212             public boolean onTouch(View view, MotionEvent m) {
 213                 return gestureDetector.onTouchEvent(m);
 214             }
 215         });
 216     }
 217
 218     private void hook_text_change_listener(final TextView view) {
 219         view.addTextChangedListener(new TextWatcher() {
 220             @Override
 221             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 222
 223             }
 224
 225             @Override
 226             public void onTextChanged(CharSequence s, int start, int before, int count) {
 227
 228             }
 229
 230             @Override
 231             public void afterTextChanged(Editable s) {
 232 //                Log.d("input", "text changed");
 233                 check_transaction_submittable();
 234             }
 235         });
 236
 237     }
 238
 239     public boolean onCreateOptionsMenu(Menu menu) {
 240         // Inflate the menu; this adds items to the action bar if it is present.
 241         getMenuInflater().inflate(R.menu.new_transaction, menu);
 242         mSave = menu.findItem(R.id.action_submit_transaction);
 243         if (mSave == null) throw new AssertionError();
 244
 245         check_transaction_submittable();
 246
 247         return true;
 248     }
 249
 250     public void pickTransactionDate(View view) {
 251         DialogFragment picker = new DatePickerFragment();
 252         picker.show(getSupportFragmentManager(), "datePicker");
 253     }
 254
 255     public int dp2px(float dp) {
 256         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 257                 getResources().getDisplayMetrics()));
 258     }
 259
 260     private void do_add_account_row(boolean focus) {
 261         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 262         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 263                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 264         acc.setHint(R.string.new_transaction_account_hint);
 265         acc.setWidth(0);
 266         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 267                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 268         acc.setSingleLine(true);
 269
 270         final EditText amt = new EditText(this);
 271         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 272                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 273         amt.setHint(R.string.new_transaction_amount_hint);
 274         amt.setWidth(0);
 275         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 276                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 277         amt.setMinWidth(dp2px(40));
 278         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 279         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 280
 281         // forward navigation support
 282         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 283         final TextView last_amt = (TextView) last_row.getChildAt(1);
 284         last_amt.setNextFocusForwardId(acc.getId());
 285         last_amt.setNextFocusRightId(acc.getId());
 286         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 287         acc.setNextFocusForwardId(amt.getId());
 288         acc.setNextFocusRightId(amt.getId());
 289
 290         final TableRow row = new TableRow(this);
 291         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 292                 TableRow.LayoutParams.MATCH_PARENT));
 293         row.setGravity(Gravity.BOTTOM);
 294         row.addView(acc);
 295         row.addView(amt);
 296         table.addView(row);
 297
 298         if (focus) acc.requestFocus();
 299
 300         hook_swipe_listener(row);
 301         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name");
 302         hook_text_change_listener(acc);
 303         hook_text_change_listener(amt);
 304     }
 305
 306     public void addTransactionAccountFromMenu(MenuItem item) {
 307         do_add_account_row(true);
 308     }
 309
 310     public void resetTransactionFromMenu(MenuItem item) {
 311         reset_form();
 312     }
 313
 314     public void saveTransactionFromMenu(MenuItem item) {
 315         save_transaction();
 316     }
 317
 318     private boolean is_zero(float f) {
 319         return (f < 0.005) && (f > -0.005);
 320     }
 321
 322     // rules:
 323     // 1) at least two account names
 324     // 2) each amount must have account name
 325     // 3) amounts must balance to 0, or
 326     // 3a) there must be exactly one empty amount
 327     // 4) empty accounts with empty amounts are ignored
 328     // 5) a row with an empty account name or empty amount is guaranteed to exist
 329     @SuppressLint("DefaultLocale")
 330     private void check_transaction_submittable() {
 331         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 332         int accounts = 0;
 333         int accounts_with_values = 0;
 334         int amounts = 0;
 335         int amounts_with_accounts = 0;
 336         int empty_rows = 0;
 337         TextView empty_amount = null;
 338         boolean single_empty_amount = false;
 339         boolean single_empty_amount_has_account = false;
 340         float running_total = 0f;
 341         boolean have_description =
 342                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 343                         .isEmpty();
 344
 345         try {
 346             for (int i = 0; i < table.getChildCount(); i++) {
 347                 TableRow row = (TableRow) table.getChildAt(i);
 348
 349                 TextView acc_name_v = (TextView) row.getChildAt(0);
 350                 TextView amount_v = (TextView) row.getChildAt(1);
 351                 String amt = String.valueOf(amount_v.getText());
 352                 String acc_name = String.valueOf(acc_name_v.getText());
 353                 acc_name = acc_name.trim();
 354
 355                 if (!acc_name.isEmpty()) {
 356                     accounts++;
 357
 358                     if (!amt.isEmpty()) {
 359                         accounts_with_values++;
 360                     }
 361                 }
 362                 else empty_rows++;
 363
 364                 if (amt.isEmpty()) {
 365                     amount_v.setHint(String.format("%1.2f", 0f));
 366                     if (empty_amount == null) {
 367                         empty_amount = amount_v;
 368                         single_empty_amount = true;
 369                         single_empty_amount_has_account = !acc_name.isEmpty();
 370                     }
 371                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 372                 }
 373                 else {
 374                     amounts++;
 375                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 376                     running_total += Float.valueOf(amt);
 377                 }
 378             }
 379
 380             if ((empty_rows == 0) &&
 381                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 382             {
 383                 do_add_account_row(false);
 384             }
 385
 386             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 387                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 388                                                "single_empty_with_acc=%s", accounts,
 389                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 390                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 391
 392             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 393                 (amounts_with_accounts == amounts) &&
 394                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
 395             {
 396                 if (mSave != null) mSave.setVisible(true);
 397             }
 398             else if (mSave != null) mSave.setVisible(false);
 399
 400             if (single_empty_amount) {
 401                 empty_amount.setHint(String.format("%1.2f",
 402                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 403             }
 404
 405         }
 406         catch (NumberFormatException e) {
 407             if (mSave != null) mSave.setVisible(false);
 408         }
 409         catch (Exception e) {
 410             e.printStackTrace();
 411             if (mSave != null) mSave.setVisible(false);
 412         }
 413     }
 414
 415     @Override
 416     public void done(String error) {
 417         progress.setVisibility(View.INVISIBLE);
 418         Log.d("visuals", "hiding progress");
 419
 420         if (error == null) reset_form();
 421         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 422                 BaseTransientBottomBar.LENGTH_LONG).show();
 423
 424         toggle_all_editing(true);
 425         check_transaction_submittable();
 426     }
 427
 428     private void reset_form() {
 429         text_date.setText("");
 430         text_descr.setText("");
 431
 432         text_descr.requestFocus();
 433
 434         while (table.getChildCount() > 2) {
 435             table.removeViewAt(2);
 436         }
 437         for (int i = 0; i < 2; i++) {
 438             TableRow tr = (TableRow) table.getChildAt(i);
 439             if (tr == null) break;
 440
 441             ((TextView) tr.getChildAt(0)).setText("");
 442             ((TextView) tr.getChildAt(1)).setText("");
 443         }
 444     }
 445 }