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

   1 /*
   2  * Copyright © 2020 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.Context;
  21 import android.content.res.Resources;
  22 import android.os.Bundle;
  23 import android.renderscript.RSInvalidStateException;
  24 import android.view.LayoutInflater;
  25 import android.view.Menu;
  26 import android.view.MenuInflater;
  27 import android.view.MenuItem;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.widget.ProgressBar;
  31
  32 import androidx.annotation.NonNull;
  33 import androidx.annotation.Nullable;
  34 import androidx.appcompat.app.AlertDialog;
  35 import androidx.fragment.app.Fragment;
  36 import androidx.fragment.app.FragmentActivity;
  37 import androidx.lifecycle.ViewModelProvider;
  38 import androidx.recyclerview.widget.LinearLayoutManager;
  39 import androidx.recyclerview.widget.RecyclerView;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42 import com.google.android.material.snackbar.Snackbar;
  43
  44 import net.ktnx.mobileledger.R;
  45 import net.ktnx.mobileledger.json.API;
  46 import net.ktnx.mobileledger.model.Data;
  47 import net.ktnx.mobileledger.model.LedgerTransaction;
  48 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.utils.Logger;
  51 import net.ktnx.mobileledger.utils.Misc;
  52 import net.ktnx.mobileledger.utils.SimpleDate;
  53
  54 import org.jetbrains.annotations.NotNull;
  55
  56 /**
  57  * A simple {@link Fragment} subclass.
  58  * Activities that contain this fragment must implement the
  59  * {@link OnNewTransactionFragmentInteractionListener} interface
  60  * to handle interaction events.
  61  */
  62
  63 // TODO: offer to undo account remove-on-swipe
  64
  65 public class NewTransactionFragment extends Fragment {
  66     private NewTransactionItemsAdapter listAdapter;
  67     private NewTransactionModel viewModel;
  68     private FloatingActionButton fab;
  69     private OnNewTransactionFragmentInteractionListener mListener;
  70     private MobileLedgerProfile mProfile;
  71     public NewTransactionFragment() {
  72         // Required empty public constructor
  73         setHasOptionsMenu(true);
  74     }
  75     @Override
  76     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  77         super.onCreateOptionsMenu(menu, inflater);
  78         final FragmentActivity activity = getActivity();
  79
  80         inflater.inflate(R.menu.new_transaction_fragment, menu);
  81         menu.findItem(R.id.action_reset_new_transaction_activity)
  82             .setOnMenuItemClickListener(item -> {
  83                 listAdapter.reset();
  84                 return true;
  85             });
  86
  87         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
  88         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
  89             viewModel.toggleCurrencyVisible();
  90             return true;
  91         });
  92         if (activity != null)
  93             viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
  94
  95         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
  96         toggleCommentsItem.setOnMenuItemClickListener(item -> {
  97             viewModel.toggleShowComments();
  98             return true;
  99         });
 100         if (activity != null)
 101             viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
 102     }
 103     @Override
 104     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 105                              Bundle savedInstanceState) {
 106         // Inflate the layout for this fragment
 107         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 108     }
 109
 110     @Override
 111     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 112         super.onViewCreated(view, savedInstanceState);
 113         FragmentActivity activity = getActivity();
 114         if (activity == null)
 115             throw new RSInvalidStateException(
 116                     "getActivity() returned null within onActivityCreated()");
 117
 118         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 119         viewModel.observeDataProfile(this);
 120         mProfile = Data.getProfile();
 121         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 122
 123         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 124         list.setAdapter(listAdapter);
 125         list.setLayoutManager(new LinearLayoutManager(activity));
 126
 127         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 128             mProfile = profile;
 129             listAdapter.setProfile(profile);
 130         });
 131         listAdapter.notifyDataSetChanged();
 132         viewModel.isSubmittable()
 133                  .observe(getViewLifecycleOwner(), isSubmittable -> {
 134                      if (isSubmittable) {
 135                          if (fab != null) {
 136                              fab.show();
 137                          }
 138                      }
 139                      else {
 140                          if (fab != null) {
 141                              fab.hide();
 142                          }
 143                      }
 144                  });
 145 //        viewModel.checkTransactionSubmittable(listAdapter);
 146
 147         fab = activity.findViewById(R.id.fab);
 148         fab.setOnClickListener(v -> onFabPressed());
 149
 150         boolean keep = false;
 151
 152         Bundle args = getArguments();
 153         if (args != null) {
 154             String error = args.getString("error");
 155             if (error != null) {
 156                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 157
 158                 Context context = getContext();
 159                 if (context != null) {
 160                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 161                     final Resources resources = context.getResources();
 162                     final StringBuilder message = new StringBuilder();
 163                     message.append(resources.getString(R.string.err_json_send_error_head));
 164                     message.append("\n\n");
 165                     message.append(error);
 166                     if (mProfile.getApiVersion()
 167                                 .equals(API.auto))
 168                         message.append(
 169                                 resources.getString(R.string.err_json_send_error_unsupported));
 170                     else {
 171                         message.append(resources.getString(R.string.err_json_send_error_tail));
 172                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 173                             Logger.debug("error", "will start profile editor");
 174                             MobileLedgerProfile.startEditProfileActivity(context, mProfile);
 175                         });
 176                     }
 177                     builder.setMessage(message);
 178                     builder.create()
 179                            .show();
 180                 }
 181                 else {
 182                     Snackbar.make(list, error, Snackbar.LENGTH_LONG)
 183                             .show();
 184                 }
 185                 keep = true;
 186             }
 187         }
 188
 189         int focused = 0;
 190         if (savedInstanceState != null) {
 191             keep |= savedInstanceState.getBoolean("keep", true);
 192             focused = savedInstanceState.getInt("focused", 0);
 193         }
 194
 195         if (!keep)
 196             viewModel.reset();
 197         else {
 198             viewModel.setFocusedItem(focused);
 199         }
 200
 201         ProgressBar p = activity.findViewById(R.id.progressBar);
 202         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 203             if (isBusy) {
 204 //                Handler h = new Handler();
 205 //                h.postDelayed(() -> {
 206 //                    if (viewModel.getBusyFlag())
 207 //                        p.setVisibility(View.VISIBLE);
 208 //
 209 //                }, 10);
 210                 p.setVisibility(View.VISIBLE);
 211             }
 212             else
 213                 p.setVisibility(View.INVISIBLE);
 214         });
 215     }
 216     @Override
 217     public void onSaveInstanceState(@NonNull Bundle outState) {
 218         super.onSaveInstanceState(outState);
 219         outState.putBoolean("keep", true);
 220         final int focusedItem = viewModel.getFocusedItem();
 221         outState.putInt("focused", focusedItem);
 222     }
 223     private void onFabPressed() {
 224         fab.hide();
 225         Misc.hideSoftKeyboard(this);
 226         if (mListener != null) {
 227             SimpleDate date = viewModel.getDate();
 228             LedgerTransaction tr =
 229                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 230
 231             tr.setComment(viewModel.getComment());
 232             LedgerTransactionAccount emptyAmountAccount = null;
 233             float emptyAmountAccountBalance = 0;
 234             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 235                 LedgerTransactionAccount acc =
 236                         new LedgerTransactionAccount(viewModel.getAccount(i));
 237                 if (acc.getAccountName()
 238                        .trim()
 239                        .isEmpty())
 240                     continue;
 241
 242                 if (acc.isAmountSet()) {
 243                     emptyAmountAccountBalance += acc.getAmount();
 244                 }
 245                 else {
 246                     emptyAmountAccount = acc;
 247                 }
 248
 249                 tr.addAccount(acc);
 250             }
 251
 252             if (emptyAmountAccount != null)
 253                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 254
 255             mListener.onTransactionSave(tr);
 256         }
 257     }
 258
 259     @Override
 260     public void onAttach(@NotNull Context context) {
 261         super.onAttach(context);
 262         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 263             mListener = (OnNewTransactionFragmentInteractionListener) context;
 264         }
 265         else {
 266             throw new RuntimeException(
 267                     context.toString() + " must implement OnFragmentInteractionListener");
 268         }
 269     }
 270
 271     @Override
 272     public void onDetach() {
 273         super.onDetach();
 274         mListener = null;
 275     }
 276
 277     /**
 278      * This interface must be implemented by activities that contain this
 279      * fragment to allow an interaction in this fragment to be communicated
 280      * to the activity and potentially other fragments contained in that
 281      * activity.
 282      * <p>
 283      * See the Android Training lesson <a href=
 284      * "http://developer.android.com/training/basics/fragments/communicating.html"
 285      * >Communicating with Other Fragments</a> for more information.
 286      */
 287     public interface OnNewTransactionFragmentInteractionListener {
 288         void onTransactionSave(LedgerTransaction tr);
 289     }
 290 }