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

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe 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  * MoLe 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 MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Intent;
  21 import android.content.pm.PackageInfo;
  22 import android.content.res.ColorStateList;
  23 import android.graphics.Color;
  24 import android.os.AsyncTask;
  25 import android.os.Build;
  26 import android.os.Bundle;
  27 import android.util.Log;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.view.animation.Animation;
  31 import android.view.animation.AnimationUtils;
  32 import android.widget.LinearLayout;
  33 import android.widget.ProgressBar;
  34 import android.widget.TextView;
  35 import android.widget.Toast;
  36
  37 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  38
  39 import net.ktnx.mobileledger.R;
  40 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  41 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.LedgerAccount;
  44 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  45 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  46 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  47 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  48 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  49 import net.ktnx.mobileledger.utils.Colors;
  50 import net.ktnx.mobileledger.utils.MLDB;
  51
  52 import java.lang.ref.WeakReference;
  53 import java.text.DateFormat;
  54 import java.util.Date;
  55 import java.util.Observable;
  56 import java.util.Observer;
  57
  58 import androidx.appcompat.app.ActionBarDrawerToggle;
  59 import androidx.appcompat.widget.Toolbar;
  60 import androidx.core.view.GravityCompat;
  61 import androidx.drawerlayout.widget.DrawerLayout;
  62 import androidx.fragment.app.Fragment;
  63 import androidx.fragment.app.FragmentManager;
  64 import androidx.fragment.app.FragmentPagerAdapter;
  65 import androidx.recyclerview.widget.LinearLayoutManager;
  66 import androidx.recyclerview.widget.RecyclerView;
  67 import androidx.viewpager.widget.ViewPager;
  68
  69 public class MainActivity extends ProfileThemedActivity {
  70     private static final String STATE_CURRENT_PAGE = "current_page";
  71     private static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  72     DrawerLayout drawer;
  73     private LinearLayout profileListContainer;
  74     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  75     private LinearLayout profileListHeadMoreAndCancel;
  76     private FragmentManager fragmentManager;
  77     private TextView tvLastUpdate;
  78     private RetrieveTransactionsTask retrieveTransactionsTask;
  79     private View bTransactionListCancelDownload;
  80     private ProgressBar progressBar;
  81     private LinearLayout progressLayout;
  82     private SectionsPagerAdapter mSectionsPagerAdapter;
  83     private ViewPager mViewPager;
  84     private FloatingActionButton fab;
  85     private boolean profileModificationEnabled = false;
  86     private boolean profileListExpanded = false;
  87     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  88
  89     @Override
  90     protected void onStart() {
  91         super.onStart();
  92
  93         Data.lastUpdateDate.set(null);
  94         updateLastUpdateTextFromDB();
  95         Date lastUpdate = Data.lastUpdateDate.get();
  96
  97         long now = new Date().getTime();
  98         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
  99             if (lastUpdate == null) Log.d("db::", "WEB data never fetched. scheduling a fetch");
 100             else Log.d("db",
 101                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 102                             lastUpdate.getTime() / 1000f, now / 1000f));
 103
 104             scheduleTransactionListRetrieval();
 105         }
 106     }
 107     @Override
 108     protected void onSaveInstanceState(Bundle outState) {
 109         super.onSaveInstanceState(outState);
 110         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 111     }
 112     @Override
 113     protected void onCreate(Bundle savedInstanceState) {
 114         super.onCreate(savedInstanceState);
 115
 116         setContentView(R.layout.activity_main);
 117
 118         fab = findViewById(R.id.btn_add_transaction);
 119         profileListContainer = findViewById(R.id.nav_profile_list_container);
 120         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 121         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 122         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 123         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 124         drawer = findViewById(R.id.drawer_layout);
 125         tvLastUpdate = findViewById(R.id.transactions_last_update);
 126         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 127         progressBar = findViewById(R.id.transaction_list_progress_bar);
 128         progressLayout = findViewById(R.id.transaction_progress_layout);
 129         fragmentManager = getSupportFragmentManager();
 130         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 131         mViewPager = findViewById(R.id.root_frame);
 132
 133         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 134         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 135
 136
 137         Toolbar toolbar = findViewById(R.id.toolbar);
 138         setSupportActionBar(toolbar);
 139
 140         Data.profile.addObserver((o, arg) -> {
 141             MobileLedgerProfile profile = Data.profile.get();
 142             runOnUiThread(() -> {
 143                 if (profile == null) setTitle(R.string.app_name);
 144                 else setTitle(profile.getName());
 145                 updateLastUpdateTextFromDB();
 146                 if (profile.isPostingPermitted()) {
 147                     toolbar.setSubtitle(null);
 148                     fab.show();
 149                 }
 150                 else {
 151                     toolbar.setSubtitle(R.string.profile_subitlte_read_only);
 152                     fab.hide();
 153                 }
 154
 155                 int newProfileTheme = profile.getThemeId();
 156                 if (newProfileTheme != Colors.profileThemeId) {
 157                     Log.d("profiles", String.format("profile theme %d → %d", Colors.profileThemeId,
 158                             newProfileTheme));
 159                     profileThemeChanged();
 160                     Colors.profileThemeId = newProfileTheme;
 161                 }
 162             });
 163         });
 164
 165         ActionBarDrawerToggle toggle =
 166                 new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open,
 167                         R.string.navigation_drawer_close);
 168         drawer.addDrawerListener(toggle);
 169         toggle.syncState();
 170
 171         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 172
 173         try {
 174             PackageInfo pi =
 175                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 176             ver.setText(pi.versionName);
 177         }
 178         catch (Exception e) {
 179             e.printStackTrace();
 180         }
 181
 182         if (progressBar == null)
 183             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 184         if (progressLayout == null) throw new RuntimeException(
 185                 "Can't get hold on the transaction value progress bar layout");
 186
 187         markDrawerItemCurrent(R.id.nav_account_summary);
 188
 189         mViewPager.setAdapter(mSectionsPagerAdapter);
 190         mViewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
 191             @Override
 192             public void onPageSelected(int position) {
 193                 switch (position) {
 194                     case 0:
 195                         markDrawerItemCurrent(R.id.nav_account_summary);
 196                         break;
 197                     case 1:
 198                         markDrawerItemCurrent(R.id.nav_latest_transactions);
 199                         break;
 200                     default:
 201                         Log.e("MainActivity", String.format("Unexpected page index %d", position));
 202                 }
 203
 204                 super.onPageSelected(position);
 205             }
 206         });
 207
 208         if (savedInstanceState != null) {
 209             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 210             if (currentPage != -1) {
 211                 mViewPager.setCurrentItem(currentPage, false);
 212             }
 213         }
 214
 215         Data.lastUpdateDate.addObserver((o, arg) -> {
 216             Log.d("main", "lastUpdateDate changed");
 217             runOnUiThread(() -> {
 218                 Date date = Data.lastUpdateDate.get();
 219                 if (date == null) {
 220                     tvLastUpdate.setText(R.string.transaction_last_update_never);
 221                 }
 222                 else {
 223                     final String text = DateFormat.getDateTimeInstance().format(date);
 224                     tvLastUpdate.setText(text);
 225                     Log.d("despair", String.format("Date formatted: %s", text));
 226                 }
 227             });
 228         });
 229
 230         findViewById(R.id.btn_no_profiles_add)
 231                 .setOnClickListener(v -> startEditProfileActivity(null));
 232
 233         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 234
 235         findViewById(R.id.nav_new_profile_button)
 236                 .setOnClickListener(v -> startEditProfileActivity(null));
 237
 238         RecyclerView root = findViewById(R.id.nav_profile_list);
 239         if (root == null)
 240             throw new RuntimeException("Can't get hold on the transaction value view");
 241
 242         mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 243         root.setAdapter(mProfileListAdapter);
 244
 245         mProfileListAdapter.addEditingProfilesObserver(new Observer() {
 246             @Override
 247             public void update(Observable o, Object arg) {
 248                 if (mProfileListAdapter.isEditingProfiles()) {
 249                     profileListHeadArrow.clearAnimation();
 250                     profileListHeadArrow.setVisibility(View.GONE);
 251                     profileListHeadMore.setVisibility(View.GONE);
 252                     profileListHeadCancel.setVisibility(View.VISIBLE);
 253                 }
 254                 else {
 255                     profileListHeadArrow.setRotation(180f);
 256                     profileListHeadArrow.setVisibility(View.VISIBLE);
 257                     profileListHeadCancel.setVisibility(View.GONE);
 258                     profileListHeadMore.setVisibility(View.GONE);
 259                     profileListHeadMore
 260                             .setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 261                 }
 262             }
 263         });
 264
 265         LinearLayoutManager llm = new LinearLayoutManager(this);
 266
 267         llm.setOrientation(RecyclerView.VERTICAL);
 268         root.setLayoutManager(llm);
 269
 270         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 271         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 272         profileListHeadMoreAndCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 273
 274         drawer.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
 275             @Override
 276             public void onDrawerClosed(View drawerView) {
 277                 super.onDrawerClosed(drawerView);
 278                 collapseProfileList();
 279             }
 280         });
 281     }
 282     private void profileThemeChanged() {
 283         setupProfileColors();
 284
 285         Bundle bundle = new Bundle();
 286         onSaveInstanceState(bundle);
 287         // restart activity to reflect theme change
 288         finish();
 289         Intent intent = new Intent(this, this.getClass());
 290         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 291         startActivity(intent);
 292     }
 293     @Override
 294     protected void onResume() {
 295         super.onResume();
 296         setupProfile();
 297     }
 298     public void startEditProfileActivity(MobileLedgerProfile profile) {
 299         Intent intent = new Intent(this, ProfileDetailActivity.class);
 300         Bundle args = new Bundle();
 301         if (profile != null) {
 302             int index = Data.getProfileIndex(profile);
 303             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 304         }
 305         intent.putExtras(args);
 306         startActivity(intent, args);
 307     }
 308     private void setupProfile() {
 309         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 310         MobileLedgerProfile profile;
 311
 312         profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
 313
 314         if (Data.profiles.getList().isEmpty()) {
 315             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 316             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 317             return;
 318         }
 319
 320         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 321         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 322
 323         if (profile == null) profile = Data.profiles.get(0);
 324
 325         if (profile == null) throw new AssertionError("profile must have a value");
 326
 327         Data.setCurrentProfile(profile);
 328     }
 329     public void fabNewTransactionClicked(View view) {
 330         Intent intent = new Intent(this, NewTransactionActivity.class);
 331         startActivity(intent);
 332         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 333     }
 334     public void navSettingsClicked(View view) {
 335         Intent intent = new Intent(this, SettingsActivity.class);
 336         startActivity(intent);
 337         drawer.closeDrawers();
 338     }
 339     public void markDrawerItemCurrent(int id) {
 340         TextView item = drawer.findViewById(id);
 341         item.setBackgroundColor(Colors.tableRowDarkBG);
 342
 343         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 344         for (int i = 0; i < actions.getChildCount(); i++) {
 345             View view = actions.getChildAt(i);
 346             if (view.getId() != id) {
 347                 view.setBackgroundColor(Color.TRANSPARENT);
 348             }
 349         }
 350     }
 351     public void onAccountSummaryClicked(View view) {
 352         drawer.closeDrawers();
 353
 354         showAccountSummaryFragment();
 355     }
 356     private void showAccountSummaryFragment() {
 357         mViewPager.setCurrentItem(0, true);
 358         TransactionListFragment.accountFilter.set(null);
 359 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 360 //        accountSummaryFragment = new AccountSummaryFragment();
 361 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 362 //        ft.commit();
 363 //        currentFragment = accountSummaryFragment;
 364     }
 365     public void onLatestTransactionsClicked(View view) {
 366         drawer.closeDrawers();
 367
 368         showTransactionsFragment(null);
 369     }
 370     private void resetFragmentBackStack() {
 371 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 372     }
 373     private void showTransactionsFragment(LedgerAccount account) {
 374         if (account != null) TransactionListFragment.accountFilter.set(account.getName());
 375         mViewPager.setCurrentItem(1, true);
 376 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 377 //        if (transactionListFragment == null) {
 378 //            Log.d("flow", "MainActivity creating TransactionListFragment");
 379 //            transactionListFragment = new TransactionListFragment();
 380 //        }
 381 //        Bundle bundle = new Bundle();
 382 //        if (account != null) {
 383 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 384 //                    account.getName());
 385 //        }
 386 //        transactionListFragment.setArguments(bundle);
 387 //        ft.replace(R.id.root_frame, transactionListFragment);
 388 //        if (account != null)
 389 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 390 //        ft.commit();
 391 //
 392 //        currentFragment = transactionListFragment;
 393     }
 394     public void showAccountTransactions(LedgerAccount account) {
 395         showTransactionsFragment(account);
 396     }
 397     @Override
 398     public void onBackPressed() {
 399         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 400         if (drawer.isDrawerOpen(GravityCompat.START)) {
 401             drawer.closeDrawer(GravityCompat.START);
 402         }
 403         else {
 404             Log.d("fragments",
 405                     String.format("manager stack: %d", fragmentManager.getBackStackEntryCount()));
 406
 407             super.onBackPressed();
 408         }
 409     }
 410     public void updateLastUpdateTextFromDB() {
 411         {
 412             final MobileLedgerProfile profile = Data.profile.get();
 413             long last_update =
 414                     (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 415
 416             Log.d("transactions", String.format("Last update = %d", last_update));
 417             if (last_update == 0) {
 418                 Data.lastUpdateDate.set(null);
 419             }
 420             else {
 421                 Data.lastUpdateDate.set(new Date(last_update));
 422             }
 423         }
 424     }
 425     public void scheduleTransactionListRetrieval() {
 426         if (Data.profile.get() == null) return;
 427
 428         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 429
 430         retrieveTransactionsTask.execute();
 431     }
 432     public void onStopTransactionRefreshClick(View view) {
 433         Log.d("interactive", "Cancelling transactions refresh");
 434         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 435         bTransactionListCancelDownload.setEnabled(false);
 436     }
 437     public void onRetrieveDone(String error) {
 438         progressLayout.setVisibility(View.GONE);
 439
 440         if (error == null) {
 441             updateLastUpdateTextFromDB();
 442
 443             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 444         }
 445         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 446     }
 447     public void onRetrieveStart() {
 448         bTransactionListCancelDownload.setEnabled(true);
 449         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 450         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 451         progressBar.setIndeterminate(true);
 452         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 453         else progressBar.setProgress(0);
 454         progressLayout.setVisibility(View.VISIBLE);
 455     }
 456     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 457         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 458             (progress.getTotal() == 0))
 459         {
 460             progressBar.setIndeterminate(true);
 461         }
 462         else {
 463             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 464                 progressBar.setMin(0);
 465             }
 466             progressBar.setMax(progress.getTotal());
 467             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 468                 progressBar.setProgress(progress.getProgress(), true);
 469             }
 470             else progressBar.setProgress(progress.getProgress());
 471             progressBar.setIndeterminate(false);
 472         }
 473     }
 474     public void fabShouldShow() {
 475         MobileLedgerProfile profile = Data.profile.get();
 476         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 477     }
 478     public void navProfilesHeadClicked(View view) {
 479         if (profileListExpanded) {
 480             collapseProfileList();
 481         }
 482         else {
 483             expandProfileList();
 484         }
 485     }
 486     private void expandProfileList() {
 487         profileListExpanded = true;
 488
 489
 490         profileListContainer.setVisibility(View.VISIBLE);
 491         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 492         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 493         profileListHeadMore.setVisibility(View.VISIBLE);
 494         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 495     }
 496     private void collapseProfileList() {
 497         profileListExpanded = false;
 498
 499         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 500         animation.setAnimationListener(new Animation.AnimationListener() {
 501             @Override
 502             public void onAnimationStart(Animation animation) {
 503
 504             }
 505             @Override
 506             public void onAnimationEnd(Animation animation) {
 507                 profileListContainer.setVisibility(View.GONE);
 508             }
 509             @Override
 510             public void onAnimationRepeat(Animation animation) {
 511
 512             }
 513         });
 514         mProfileListAdapter.stopEditingProfiles();
 515
 516         profileListContainer.startAnimation(animation);
 517         profileListHeadArrow.setRotation(0f);
 518         profileListHeadArrow
 519                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 520         profileListHeadMore.setVisibility(View.GONE);
 521     }
 522     public void onProfileRowClicked(View v) {
 523         Data.setCurrentProfile((MobileLedgerProfile) v.getTag());
 524     }
 525     public void enableProfileModifications() {
 526         profileModificationEnabled = true;
 527         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 528         for (int i = 0; i < profileList.getChildCount(); i++) {
 529             View aRow = profileList.getChildAt(i);
 530             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.VISIBLE);
 531             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.VISIBLE);
 532         }
 533         // FIXME enable rearranging
 534
 535     }
 536     public void disableProfileModifications() {
 537         profileModificationEnabled = false;
 538         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 539         for (int i = 0; i < profileList.getChildCount(); i++) {
 540             View aRow = profileList.getChildAt(i);
 541             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.GONE);
 542             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.INVISIBLE);
 543         }
 544         // FIXME disable rearranging
 545
 546     }
 547
 548     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 549
 550         public SectionsPagerAdapter(FragmentManager fm) {
 551             super(fm);
 552         }
 553
 554         @Override
 555         public Fragment getItem(int position) {
 556             Log.d("main", String.format("Switching to fragment %d", position));
 557             switch (position) {
 558                 case 0:
 559                     return new AccountSummaryFragment();
 560                 case 1:
 561                     return new TransactionListFragment();
 562                 default:
 563                     throw new IllegalStateException(
 564                             String.format("Unexpected fragment index: " + "%d", position));
 565             }
 566         }
 567
 568         @Override
 569         public int getCount() {
 570             return 2;
 571         }
 572     }
 573
 574 }