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