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