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         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 118         viewModel.observeDataProfile(this);
 119         mProfile = Data.getProfile();
 120         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 121         list.setAdapter(listAdapter);
 122         list.setLayoutManager(new LinearLayoutManager(activity));
 123
 124         Data.observeProfile(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                          }
 135                      }
 136                      else {
 137                          if (fab != null) {
 138                              fab.hide();
 139                          }
 140                      }
 141                  });
 142 //        viewModel.checkTransactionSubmittable(listAdapter);
 143
 144         fab = activity.findViewById(R.id.fab);
 145         fab.setOnClickListener(v -> onFabPressed());
 146
 147         boolean keep = false;
 148
 149         Bundle args = getArguments();
 150         if (args != null) {
 151             String error = args.getString("error");
 152             if (error != null) {
 153                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 154                 Snackbar.make(list, error, Snackbar.LENGTH_LONG)
 155                         .show();
 156                 keep = true;
 157             }
 158         }
 159
 160         int focused = 0;
 161         if (savedInstanceState != null) {
 162             keep |= savedInstanceState.getBoolean("keep", true);
 163             focused = savedInstanceState.getInt("focused", 0);
 164         }
 165
 166         if (!keep)
 167             viewModel.reset();
 168         else {
 169             viewModel.setFocusedItem(focused);
 170         }
 171
 172         ProgressBar p = activity.findViewById(R.id.progressBar);
 173         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 174             if (isBusy) {
 175 //                Handler h = new Handler();
 176 //                h.postDelayed(() -> {
 177 //                    if (viewModel.getBusyFlag())
 178 //                        p.setVisibility(View.VISIBLE);
 179 //
 180 //                }, 10);
 181                 p.setVisibility(View.VISIBLE);
 182             }
 183             else
 184                 p.setVisibility(View.INVISIBLE);
 185         });
 186     }
 187     @Override
 188     public void onSaveInstanceState(@NonNull Bundle outState) {
 189         super.onSaveInstanceState(outState);
 190         outState.putBoolean("keep", true);
 191         final int focusedItem = viewModel.getFocusedItem();
 192         outState.putInt("focused", focusedItem);
 193     }
 194     private void onFabPressed() {
 195         fab.hide();
 196         Misc.hideSoftKeyboard(this);
 197         if (mListener != null) {
 198             SimpleDate date = viewModel.getDate();
 199             LedgerTransaction tr =
 200                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 201
 202             tr.setComment(viewModel.getComment());
 203             LedgerTransactionAccount emptyAmountAccount = null;
 204             float emptyAmountAccountBalance = 0;
 205             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 206                 LedgerTransactionAccount acc =
 207                         new LedgerTransactionAccount(viewModel.getAccount(i));
 208                 if (acc.getAccountName()
 209                        .trim()
 210                        .isEmpty())
 211                     continue;
 212
 213                 if (acc.isAmountSet()) {
 214                     emptyAmountAccountBalance += acc.getAmount();
 215                 }
 216                 else {
 217                     emptyAmountAccount = acc;
 218                 }
 219
 220                 tr.addAccount(acc);
 221             }
 222
 223             if (emptyAmountAccount != null)
 224                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 225
 226             mListener.onTransactionSave(tr);
 227         }
 228     }
 229
 230     @Override
 231     public void onAttach(@NotNull Context context) {
 232         super.onAttach(context);
 233         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 234             mListener = (OnNewTransactionFragmentInteractionListener) context;
 235         }
 236         else {
 237             throw new RuntimeException(
 238                     context.toString() + " must implement OnFragmentInteractionListener");
 239         }
 240     }
 241
 242     @Override
 243     public void onDetach() {
 244         super.onDetach();
 245         mListener = null;
 246     }
 247
 248     /**
 249      * This interface must be implemented by activities that contain this
 250      * fragment to allow an interaction in this fragment to be communicated
 251      * to the activity and potentially other fragments contained in that
 252      * activity.
 253      * <p>
 254      * See the Android Training lesson <a href=
 255      * "http://developer.android.com/training/basics/fragments/communicating.html"
 256      * >Communicating with Other Fragments</a> for more information.
 257      */
 258     public interface OnNewTransactionFragmentInteractionListener {
 259         void onTransactionSave(LedgerTransaction tr);
 260     }
 261 }